This book deals with voluntary approaches between farmers and water suppliers as an instrument to meet environmental standards, impacted by agricultural activities, more economically efficient and environmentally effective than by exclusive application of alternative instruments including command-and-control approaches. The book is based largely on the results of the research project 'Co-operative Agreements in Agriculture as an Instrument to Improve the Economic Efficiency and Economic Effectiveness of the European Water Policy', which was supplemented for specific issues by key experts. The research was partly funded by the European Commission under the Specific RTD Programme in the Field of Environment and Climate (Contract No. ENV4-CT98-0782) and partly by the Ministry of Agriculture, Nature Management and Fisheries in the Netherlands, the Environment Agency in England and Wales, the UK Ministry of Agriculture, Fisheries and Food, and the Government of the German Bundesland North Rhine Westphalia. Additional funds for preparing the book were obtained from the Ministry of Agriculture, Nature Management and Fisheries in the Netherlands. The financial and technical support received from the different organisations is gratefully acknowledged. The editors appreciate very much the efforts the authors have made in preparing their contributions for the book and for the secretarial assistance provided by Mrs. Tessa van Dongen from LEI who took responsibility for guiding the publication process and preparing the chapters of the book. We also appreciate the support given by Mrs. Henny Hoogervorst and Mrs. Gloria Verhey (Kluwer Academic Publishers)."

The patterns of land use that have evolved in Europe reflect the boundaries set by the natural environment and socio-economic responses to the needs of the population. Over the centuries man has been able to overcome increasingly the constraints placed on land use by the natural environment through the development of new technologies and innovations, driven by an increasing population and rising material expectations. However, activities are still ultimately constrained by natural limitations such as climatic characteristics and associated edaphic and vegetational features. A major problem for land management, in its broadest sense, can be a reluctance to foresee the consequent ecological changes. This means that mitigating strategies will not be implemented in time to prevent environmental degradation and social hardship, although in many parts of Europe, over some centuries, demands have been met in a sustainable way, by sound, prudent and temperate expectations that have dictated management regimes. The management of land in Europe has always been a complex challenge: land is the primary, though finite resource. DeciSions regarding the use of land and manipulation of ecosystem dynamics today may affect the long-term primary productivity of the resource. Decisions to change land use may be virtually irreversible; urbanization is an illustration of the influence of population density on the land resource.

In the mid 1980's - while a student at the department of econometrics at the Free University - I became an assistant at the Institute for Environmental Studies (IvM) of this university. My main task was assisting with the com- putational aspects of the project 'an integrated environmental model: a case study in the Markiezaat area'. A number of methodological problems were for- mulated during the operationalization phase of that project, such as the need to develop systematically an integrated model design and to look for means of handling different sources of information. Prof. Dr. P. Nijkamp of the Department of Regional Economics and Drs. L. Hordijk - at that time leader of the economic-technological research group at the IvM - therefore initiated a project proposal to be supported by the Netherlands Organisation for the Advancement of Pure Research (ZWO). Meanwhile I became an assistant to Prof. Dr. P. Nijkamp, surveying qualita- ti ve statistical developments in the field of regional inequa li ty analysis. This inventory has been shown to be a relevant basis for the preparation of this book. In spring 1982 I began working at IvM on the above project on integrated environmental modelling.

This book deals with voluntary approaches between farmers and water suppliers as an instrument to meet environmental standards, impacted by agricultural activities, more economically efficient and environmentally effective than by exclusive application of alternative instruments including command-and-control approaches. The book is based largely on the results of the research project 'Co-operative Agreements in Agriculture as an Instrument to Improve the Economic Efficiency and Economic Effectiveness of the European Water Policy', which was supplemented for specific issues by key experts. The research was partly funded by the European Commission under the Specific RTD Programme in the Field of Environment and Climate (Contract No. ENV4-CT98-0782) and partly by the Ministry of Agriculture, Nature Management and Fisheries in the Netherlands, the Environment Agency in England and Wales, the UK Ministry of Agriculture, Fisheries and Food, and the Government of the German Bundesland North Rhine Westphalia. Additional funds for preparing the book were obtained from the Ministry of Agriculture, Nature Management and Fisheries in the Netherlands. The financial and technical support received from the different organisations is gratefully acknowledged. The editors appreciate very much the efforts the authors have made in preparing their contributions for the book and for the secretarial assistance provided by Mrs. Tessa van Dongen from LEI who took responsibility for guiding the publication process and preparing the chapters of the book. We also appreciate the support given by Mrs. Henny Hoogervorst and Mrs. Gloria Verhey (Kluwer Academic Publishers)."