Satellite imagery and data are widely used in public health surveillance to provide early warning of disease outbreaks and for averting pandemics. Convergence of these technologies began in the 1970s and has gained wide acceptance in the 21st Century. Environmental Tracking for Public Health Surveillance focuses on the expanding use of satellite sensor imagery and long-term spectral measurements for assessing and modelling Earth's environments in context of public health surveillance. It addresses vector-borne, air-borne, water-borne, and zoonotic diseases, and explores analytical methods for forecasting environmental conditions and their potential for consequent disease outbreaks. Infectious and contagious diseases are of particular interest in this volume because once parasite-vector-human host pathways are triggered by favourable biological circumstances, pandemic diseases can spread to global scale in a matter of hours. The chapters advance readers through three sets of material. Part I reviews the 1970-2012 history of satellite Earth-science surveillance technology that led to linking natural environments to human diseases, and more generally to public health applications. Part II describes specific infectious and contagious diseases and the threat of emerging and re-emerging diseases. Part III explores the kinds of satellite data, modelling, and electronic information systems being developed to expedite health intercessions and responses at local to regional and global scales of reference. Equally important are the extensive reference sections for chapters in Parts II and III. For readers interested in tracking the development of Earth-science technology, these constitute a thorough entree to both the health and environmental literature. The chapters are written jointly by experts in both the health and Earth-science technologies. Each chapter is accompanied by an extensive list of citations to provide background and validation of the current state-of-the-art for a variety of high-interest human diseases and associated health and well-being issues. The importance of day-to-day weather patterns, the impacts of severe weather events and longer-term climate cycles form the basis for developing information systems that meet goals and expectations of national and international health monitoring bodies. Environmental Tracking for Public Health Surveillance provides a state-of-the-art overview on how environmental tracking data from satellite, airborne, and ground-based sensors are being integrated into appropriate geophysical and spatial information system models to enhance public health surveillance and decision-making from local to global levels, and is intended primarily for a cross-disciplinary professional audience consisting of public health decision-makers, spatial data analysts, modelers, Earth observation specialists, and medical researchers.

Scientists and consultants need to estimate and map properties of the terrestrial environment. These include plant nutrients and parasites in soil, gaseous emissions from soil, pollutant metals and xenobiotics in waste and contaminated land, salt in groundwater and species abundances above ground. The scale varies from small experimental plots to catchments, and the land may be enclosed in fields or be open grassland, forest or desert. Those who sample the variables to obtain the necessary data need guidance on the design and analysis of sampling methods for their conclusions and recommendations to be valid.

This book provides that guidance, backed by sound rationale and statistical theory. It concentrates on design-based sampling for estimates of mean values of environmental properties, emphasizing replication and randomization. It starts with simple random sampling and then progresses to more efficient designs, such as spatially stratified random sampling, stratification by classes and cluster sampling. It includes a section on purposive sampling in classical soil survey, which is relevant to other environmental properties such as vegetation. It also describes the effects of bulking on errors and the use of ancillary information and regression to improve estimates. The authors draw the important distinction between design-based sampling for estimating means and model-based methods (geostatistics) for local spatial prediction and mapping, and focus on the latter. They describe designs suitable for computing variograms and prediction by kriging, as well as a staged approach, so that sampling is neither inadequate nor excessive, and designs adapt as knowledge is accumulated. Including numerous worked case studies of sampling in agriculture, ecology and environmental science, the book will be of immediate practical value.

The fate of much of the world's terrestrial biodiversity depends upon our ability to improve the management of forest ecosystems that have already been substantially modified by humans. Monitoring is an essential ingredient in meeting this challenge, allowing us to measure the impact of different human activities on biodiversity and identify more responsible ways of managing the environment. Nevertheless many biodiversity monitoring programs are criticised as being little more than 'tick the box' compliance exercises that waste precious resources and erode the credibility of science in the eyes of decision makers and conservation investors. The purpose of this book is to examine the factors that make biodiversity monitoring programs fail or succeed. The first two sections lay out the context and importance of biodiversity monitoring, and shed light on some of the key challenges that have confounded many efforts to date. The third and main section presents an operational framework for developing monitoring programs that have the potential to make a meaningful contribution to forest management. Discussion covers the scoping, design and implementation stages of a forest biodiversity monitoring program, including defining the purpose, goals and objectives of monitoring, indicator selection, and the process of data collection, analysis and interpretation. Underpinning the book is the belief that biodiversity monitoring should be viewed not as a stand-alone exercise in surveillance but rather as an explicit mechanism for learning about how to improve opportunities for conservation. To be successful in this task, monitoring needs to be grounded in clear goals and objectives, effective in generating reliable assessments of changes in biodiversity and realistic in light of real-world financial, logistical and social constraints.

WATER RESOURCES AND ENVIRONMENT provides a detailed introduction to the full range of advanced, multidisciplinary techniques used in the study of water resources from understanding individual aquifers to the protection and management of water in a sustainable way, compatible with the preservation of the environment. Based on a masters course from UNESCO's International Hydrological Program, this textbook is accompanied by color figures and graphics, illustrating clearly the content of the text and showing real examples from the field. Each chapter also contains a list of exercises and practical activities as well as case studies.

This book provides hands-on conceptual, theoretical, and case study discussions on vulnerability and resilience in the global south. This book covers the core of adaptation strategies in developing countries context in an easy-to-follow theoretical and empirical examples. This book shares contemporary approaches on vulnerability, adaptation strategies, and resilience, which aim to assist its targeted audience (academics, policymakers, and practitioners) to understand and make informed decisions in a wide variety of real-world resilience situations.

Under the best of circumstances, preparing an environmental impact assessment (EIA) can be a complex and challenging task. Experience indicates that the scope and quality of such analyses varies widely throughout the U.S. as well as internationally. Written to help practitioners and decision-makers apply best professional practices in the development of EIAs, Environmental Impact Assessment: A Guide to Best Professional Practices provides an in depth, yet practical direction for developing a defensible analysis that meets best professional practices. The book describes preparation of five distinct types of assessments: Cumulative Impact Assessment (CIA) Preparing Greenhouse Emission Assessments Preparing Risk Assessments and Accident Analyses Social Impact Assessment (SIA) and Environmental Justice The International Environmental Impact Assessment Process Guiding Principles To date, there is significant variation and disagreement about how such analyses should be prepared. The author introduces best professional practices (BPP) for preparing such EIAs that is intended to meet decision-making and regulatory expectations. He supplies a comprehensive and balanced skill set of tools, techniques, concepts, principles, and practices for preparing these assessments. He also includes directions for developing a comprehensive Environmental Management Systems which can be used to monitor and implement final decisions for such analyses. While the book references the U.S. National Environmental Policy Act (NEPA), most of this guidance is generally applicable to any international EIA process consistent with NEPA. With thorough coverage of all aspects of assessments, the book presents a theoretical introduction to the subject as well as practical guidance. It delivers state-of-the-art tools, techniques, and approaches for resolving EIA problems.

This book addresses the improvement and dissemination of knowledge on methods, policies and technologies for increasing the sustainability of development by de-coupling growth from natural resources and replacing them with knowledge-based economy, taking into account its economic, environmental and social pillars, as well as methods for assessing and measuring sustainability of development, regarding water and environment. This book gathers scholar and experts in related fields. All attendees from a vast range of companies, universities and government institutions acquire advanced technical knowledge and are introduced to new fields through discussions that focus on their own specialties as well as a variety of interdisciplinary areas. The authors hope most of scholars can find what they really need in this book.

The fate of much of the world's terrestrial biodiversity depends upon our ability to improve the management of forest ecosystems that have already been substantially modified by humans. Monitoring is an essential ingredient in meeting this challenge, allowing us to measure the impact of different human activities on biodiversity and identify more responsible ways of managing the environment. Nevertheless many biodiversity monitoring programs are criticised as being little more than 'tick the box' compliance exercises that waste precious resources and erode the credibility of science in the eyes of decision makers and conservation investors. The purpose of this book is to examine the factors that make biodiversity monitoring programs fail or succeed. The first two sections lay out the context and importance of biodiversity monitoring, and shed light on some of the key challenges that have confounded many efforts to date. The third and main section presents an operational framework for developing monitoring programs that have the potential to make a meaningful contribution to forest management. Discussion covers the scoping, design and implementation stages of a forest biodiversity monitoring program, including defining the purpose, goals and objectives of monitoring, indicator selection, and the process of data collection, analysis and interpretation. Underpinning the book is the belief that biodiversity monitoring should be viewed not as a stand-alone exercise in surveillance but rather as an explicit mechanism for learning about how to improve opportunities for conservation. To be successful in this task, monitoring needs to be grounded in clear goals and objectives, effective in generating reliable assessments of changes in biodiversity and realistic in light of real-world financial, logistical and social constraints.

This book explains to governments, decision makers and disaster professionals the potential uses of recent technologies for disaster monitoring and risk reduction based on the knowledge and experience of prominent experts/researchers in the relevant fields. It discusses the application of recent technological developments for emerging disaster risks in today's societies and deliberates on the various aspects of disaster risk reduction strategies, especially through sustainable community resilience and responses. This book consists of selected invited papers on disaster management, which focus on community resilience and responses towards disaster risk reduction based on experiences, and closely examines the coordinated research activities involving all stakeholders, especially the communities at risk. Many regions of the world and aspects of disaster risk and its management are covered. It is described how recent technologies will support better understanding and action to reduce the number and impact of disasters in future. The principal audience for this book is researchers, urban planners, policy makers, as well as students.

A digital elevation model (DEM) is a digital representation of ground surface topography or terrain. It is also widely known as a digital terrain model (DTM). A DEM can be represented as a raster (a grid of squares) or as a vector based triangular irregular network (TIN). DEMs are commonly built using remote sensing techniques, but they may also be built from land surveying. DEMs are used often in geographic information systems, and are the most common basis for digitally-produced relief maps. The terrain surface can be described as compromising of two different elements; random and systematic. The random (stochastic) elements are the continuous surfaces with continuously varying relief. It would take an endless number of points to describe exactly the random terrain shapes, but these can be described in practice with a network of point. It is usual to use a network that creates sloping triangles or regular quadrants. This book examines how the methods and data sources used to generate DEMs and calculate land surface parameters have changed over the past 25 years. The primary goal is to describe the state-of-the-art for a typical digital terrain modeling workflow that starts with data capture, continues with data preprocessing and DEM generation, and concludes with the calculation of one or more primary and secondary land surface parameters. Taken as a whole, this book covers the basic theory behind the methods, the instrumentation, analysis and interpretation that are embedded in the modern digital terrain modeling workflow, the strengths and weaknesses of the various methods that the terrain analyst must choose among, typical applications of the results emanating from these terrain modeling workflows, and future directions. This book is intended for researchers and practitioners who wish to use DEMs, land surface parameters, land surface objects and landforms in environmental projects. The book will also be valuable as a reference text for environmental scientists who are specialists in related fields and wish to integrate these kinds of digital terrain workflows and outputs into their own specialized work environments.

The book reviews the current state of knowledge on the chemical and physical processes occurring in the environmental media (i) the atmosphere, (ii) the aqueous phase and (iii) soil and identifies the strengths and weaknesses of the chemical mechanisms (both explicit and condensed) currently available to simulate the multimedia environmental chemistry of volatile organic compounds (VOCs) and particulate matter in these media. Contributions examine how well this knowledge has been incorporated into different types of CT models and appraise the current status and significant issues in the development and usage of the models. Model simulations of some real world chemical perturbations to the Earth system are presented which appraise the performance of the models in relation to "real world" observations. Serious caveats in our understanding of chemical processes and their simulation in the various compartments of the Earth system are highlighted and areas are identified that need urgent improvement, in particular with respect to environmental security.

This title meets a great demand for training in spatial analysis tools accessible to a wide audience. Landscape ecology continues to grow as an exciting discipline with much to offer for solving pressing and emerging problems in environmental science. Much of the strength of landscape ecology lies in its ability to address challenges over large areas, over spatial and temporal scales at which decision-making often occurs. As the world tackles issues related to sustainability and global change, the need for this broad perspective has only increased. Furthermore, spatial data and spatial analysis (core methods in landscape ecology) are critical for analyzing land-cover changes world-wide. While spatial dynamics have long been fundamental to terrestrial conservation strategies, land management and reserve design, mapping and spatial themes are increasingly recognized as important for ecosystem management in aquatic, coastal and marine systems. This second edition is purposefully more applied and international in its examples, approaches, perspectives and contributors. It includes new advances in quantifying landscape structure and connectivity (such as graph theory), as well as labs that incorporate the latest scientific understanding of ecosystem services, resilience, social-ecological landscapes, and even seascapes. Of course, as before, the exercises emphasize easy-to-use, widely available software. http://sarahgergel.net/lel/learning-landscape-ecology/

This book proposes the concept of urban multiple habitats and then analyzes its corresponding classification, function and potential supply capability. It provides an analysis framework for studying the relationship between urban biodiversity and built environment, and for considering the loss of urban habitats caused by high-density development. It argues that urban biodiversity is a key indicator for assessing urban ecosystem services. On this basis, the book then presents a case study mainly focusing on wild birds in Shanghai, as urban wild birds and their species could be viewed as an essential indicator for evaluating healthy ecosystem of contemporary cities. Based on the empirical findings, the book proposes an assessment model for urban biodiversity performance and a range of principles, strategies and key indicators regarding the optimization of urban planning and design practice to enhance urban biodiversity performance.

There is evidence that the world has been witnessing more intense tropical cyclones. Accompanying these tropical cyclones are heightened levels of devastation that witness the loss of human life and wildlife, destruction of natural resources and property and the disruption of major economic and social activities. To this end, there is a growing demand for publications focusing on tropical cyclones at various levels that include regional, national and local levels, especially from Africa. One sub-region that has been witnessing the harsh realities of the increasing intensity of tropical cyclones in southern Africa. However, within this region, countries are usually impacted at varying degrees of damage. Among the countries that usually encounter the harshness of these tropical cyclones are the Comoros, Botswana, Madagascar, Mauritius, Malawi, Mozambique, Reunion, the Seychelles, South Africa and Zimbabwe. From the history books, the following tropical cyclones made landfall and hit southern Africa: Eline (2000), Favio (2007), Dineo (2017), Idai (2019), Kenneth (2019), Eliose (2021), and Chalane (2020). Although all these tropical cyclones had negative impacts, it is undoubtedly Tropical Cyclone Idai that shocked the world with its devastation mainly in Mozambique, Malawi and Zimbabwe in March 2019. Key infrastructure was destroyed, livelihoods were lost, and the environment was degraded. Thousands of people died, many more were injured, many remain unaccounted for and others remained homeless as of the time of finalising this book in February 2021. This book, therefore focuses on the devastating impacts of Tropical Cyclone Idai in Zimbabwe. The book interfaces Tropical Cyclone Idai's impacts with the 2030 Agenda for Sustainable Development and some of the 17 Sustainable Development Goals (SDGs). This linkage was deliberate given that there is still time remaining until 2030, and the world has generally agreed to move into the future along the pathways of sustainable development and sustainability. The book adds to the first comprehensive profiling of the impacts of tropical cyclones on southern African economies, particularly that of Zimbabwe. It also comes up as the first in a three-volume series. The other volumes to look out for are Cyclones in Southern Africa Vol 2: Foundational and Fundamental Topics; and Cyclones in Southern Africa Vol 3: Implications for the Sustainable Development Goals. To this end, this book is suitable as a read for several professionals and disciplines such as tourism and hospitality studies, economics, sustainable development, development studies, environmental sciences, arts, geography, life sciences, politics, planning and public health.

Water pollution is a matter of concern for both developing and developed parts of the world. This book presents an overview on water pollution and its sustainable management. The book discusses the fundamental aspects of water pollution as well as advanced sustainable technologies for abating water pollution. It is a comprehensive collection of information related with water pollutants which are extremely harmful to man, other living organisms and to the ecosystems. It is all-inclusive coverage of technical, socio-political, scientific as well as social issues revolving around water pollution and management. The book brings out innovative ideas promoting sustainable technologies and extensively covers the diversity of modern technologies related to prevention of water pollution. Book also covers social aspects of water related issues. It is an essential reading for upper level graduates and undergraduates pursuing environmental studies and researchers in the field of waste water management

The book introduces two domains namely Remote Sensing and Digital Image Processing. It discusses remote sensing, texture, classifiers, and procedures for performing the texture-based segmentation and land cover classification. The first chapter discusses the important terminologies in remote sensing, basics of land cover classification, types of remotely sensed images and their characteristics. The second chapter introduces the texture and a detailed literature survey citing papers related to texture analysis and image processing. The third chapter describes basic texture models for gray level images and multivariate texture models for color or remotely sensed images with relevant Matlab source codes. The fourth chapter focuses on texture-based classification and texture-based segmentation. The Matlab source codes for performing supervised texture based segmentation using basic texture models and minimum distance classifier are listed. The fifth chapter describes supervised and unsupervised classifiers. The experimental results obtained using a basic texture model (Uniform Local Binary Pattern) with the classifiers described earlier are discussed through the relevant Matlab source codes. The sixth chapter describes land cover classification procedure using multivariate (statistical and spectral) texture models and minimum distance classifier with Matlab source codes. A few performance metrics are also explained. The seventh chapter explains how texture based segmentation and land cover classification are performed using the hidden Markov model with relevant Matlab source codes. The eighth chapter gives an overview of spatial data analysis and other existing land cover classification methods. The ninth chapter addresses the research issues and challenges associated with land cover classification using textural approaches. This book is useful for undergraduates in Computer Science and Civil Engineering and postgraduates who plan to do research or project work in digital image processing. The book can serve as a guide to those who narrow down their research to processing remotely sensed images. It addresses a wide range of texture models and classifiers. The book not only guides but aids the reader in implementing the concepts through the Matlab source codes listed. In short, the book will be a valuable resource for growing academicians to gain expertise in their area of specialization and students who aim at gaining in-depth knowledge through practical implementations. The exercises given under texture based segmentation (excluding land cover classification exercises) can serve as lab exercises for the undergraduate students who learn texture based image processing.

Indicators are more and more applied to describe and analyze complex systems. Typical examples: Innovation potential of nations, child-well being, Environmental health, poverty, chemical pollution, corruption of nations. The task is: How can a system of indicators be defined in order to fulfill the above expectations. One possibility is the application of the mathematical theory of partial order, especially when the indicator system shall be used for ranking purposes.

Evaluating traditional and recent analytical methods according to speed, sensitivity, and cost-efficiency, this reference supports specialists in the selection of effective analytical techniques and equipment for the study of soils, soil contaminants, and environmental samples. Updated and revised, this Third Edition illustrates the advantages, limitations, range, and challenges of the major analytical approaches utilized in modern research laboratories. It includes new chapters and expanded discussions of the measurement of organic pollutants in the environment and gas fluxes between the land surface and atmosphere, and an extensive range of environmental materials.

This book employs a suite of remotely sensed products and advanced technologies to provide the first comprehensive space-based sensing of Lake Victoria, the world's second largest freshwater lake that supports a livelihood of more than 42 million people, modulates regional climate, but faces myriads of challenges. Proper understanding of the lake and changes in its physical dynamics (e.g., water level, shorelines and areal dynamics) resulting from the impacts of climate variation and climate change as well as anthropogenic (e.g., hydropower and irrigation) is important for its management as well as for strategic development before, during and after climate extremes (e.g., floods and droughts) in order to inform policy formulations, planning and mitigation measures. Owing to its sheer size, and lack of research resources commitment by regional governments that hamper its observations, however, it is a daunting task to undertake studies on Lake Victoria relying solely on in-situ "boots on the ground" measurements, which are sparse, missing in most cases, inconsistent or restricted by governmental red tapes. To unlock the potentials of Lake Victoria, this book argues for the removal of obsolete Nile treaties signed between Britain, Egypt and Sudan in the 1920s and 1950s, which prohibits its utilization by the upstream countries. The book is useful to those in water resources management and policy formulations, hydrologists, environmentalists, engineers and researchers. In a unique cross-disciplinary approach, the Book articulates the various climatic impacts and explanations from natural and anthropogenic origins, which affected Lake Victoria and its vicinity, including the drastic increase and depletion of water level in the Lake and dams, floods and droughts, water quality/security, crop health, food security, and economic implications. With no exception as in his many publications, Joseph L. Awange used data analysis methodologies including filtering, adjustment theory, and robust statistics, to quantify the hydrologic and other parameters, and their estimated uncertainties. The Book is recommended for readers from a diverse disciplines, including physical and social sciences, policy, law, engineering, and disaster management. Professor C.K. Shum, Ohio State University.

This book introduces readers to the press release work carried out by Ministry of Ecology and Environment of the People's Republic of China in 2018. It is divided into 3 parts, and each part is arranged in chronological order. The first part contains the records of Li Ganjie, Minister of the Ministry of Ecology and Environment, who attended the press conference of the two conferences and the "Ministerial Channel". The second part contains the record of Special Representative of China's Climate Change Affairs, Xie Zhenhua, who attended the "China's Policies and Actions on Climate Change 2018 Annual Report" press conference, and Zhao Yingmin, Deputy Minister of the Ministry of Ecology and Environment, who attended the "Three-year Action Plan to Win the Blue Sky Defense War" policy briefing. The third part contains the records of 12 regular press conferences of the Ministry of Ecology and Environment throughout the year.

This book introduces the press release work carried out by Ministry of Ecology and Environment of the People's Republic of China in 2019. It is divided into four parts, each arranged chronologically. The first part contains the records of Li Ganjie, Minister of the Ministry of Ecology and Environment, who attended the press conference on "Promoting Ecological Civilization and Building a Beautiful China". The second part contains the records of Minister Li Ganjie's attendance at the press conference of the National People's Congress and the Chinese Political Consultative Conference as well as the "Minister channel". The third part contains the records of four press conferences on ecological and environmental protection held by the State Council Information Office of the People's Republic of China. The fourth part contains the records of 12 regular press conferences held by the Ministry of Ecology and Environment.

The book is a collection of the lectures delivered during the 7th International Summer School on Atmospheric and Oceanic Sciences (ISSAOS) titled "Integrated Ground-Based Observing Systems Applications for Climate, Meteorology, and Civil Protection". Its aim is to contribute to the scientific understanding of basic concepts and applications of integrated ground-based observing systems. The first part describes the most common instrumentations showing their strengths and limitations. Furthermore, strategic plans for the deployment of an observation site are discussed along with an overview of techniques for integrating heterogeneous data. The second part introduces cutting-edge applications, including assimilation in numerical weather prediction, climate benchmarking, air quality monitoring and meteo/hydrological warnings.

This book explores how integrated management of environmental resources via a nexus approach can help in achieving the respective Sustainable Development Goals (SDGs). It provides conceptual considerations but mainly practical examples on how to implement a nexus approach in cities and multifunctional land-use systems to increase resource use efficiency and develop a low carbon economy. After sketching out the background and conceptual outline, contributions to the book explore key aspects of the nexus implementation. Specifically, they * Demonstrate how to sustainably use organic waste and wastewater for agriculture, * Explore examples on how to manage multifunctional land-use systems including multipurpose reservoirs, * Highlight the importance of economic incentives for successful nexus implementation, and * Provide a comprehensive perspective on challenges and opportunities of implementation, considering peer-to-peer learning, indigenous knowledge, and stakeholder participation. The chapters in this book shed a new light on key aspects of the interrelation between SDGs and the nexus approach in resilient cities and multifunctional land-use systems, and provide specific examples on how to advance sustainable resources management.

Determination of metals is a major part of the work of environmental testing laboratories. EPA and DEP methodology releases provide information only for selected areas of metals sampling and analysis, and their language makes them unsuitable for teaching and training purposes. Environmental Sampling and Analysis for Metals is a comprehensive and easy-to-read text for laboratory technicians and analytical chemists who need a guide for analyzing metals in environmental samples and a reference for analytical and quality control procedures.

The book provides both theoretical and practical applications in metals analysis of environmental samples and incorporates the latest in analytical techniques, instrumentation, and regulations. Topics include sample collection, preservation, step-by-step analytical procedures, complete QA/QC requirements, data validation, and more. It also provides an overview of the occurrence, source, and fate of metallic substances in the environment, as well as their control by regulations and standards. Furthermore, the authors provide guidelines to help you prepare and understand reports. The analytical methods presented in Environmental Sampling and Analysis for Metals will be useful to anyone who produces, uses, or evaluates analytical data, and will be a valuable tool in environmental education and training programs.

With the increasing concern over rural livelihoods and the food security of poor communities in developing countries, it is vital that land quality is maintained. Yet, land degradation is widespread and is lowering the productive capacity of the land in these countries. This practical handbook presents simple, non-technical indicators for assessing land degradation in the field. Based on the perspective of the farmer, the methods selected lend meaning to real farming situations, helping the field professional to understand not only the impact of degradation but also the benefits to be gained from reversing it. The handbook shows how to calculate indicators such as those of soil loss, explains the interpretation of results and in particular how combinations of different indicators can give conclusive evidence of the severity of land degradation. The focus of the book is firmly on understanding the farmer's interaction with the land, and how environmental protection, food security and the well-being of rural land users may be assured. With detailed figures, photographs, worked examples and sample forms based on assessment techniques validated by field professionals in Africa, Asia and Latin America, this will be an essential training manual will be invaluable for field-workers in NGOs and in governmental and educational institutions. It will also be of interest to researchers and academics in development, environment and agriculture.