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Used by humans since ancient times, evergreen oak forests still
cover extensive mountain areas of the Mediterranean Basin. These
broadleaved evergreen forests occupy a transitional zone between
the cool-temperate deciduous forest biome and the drier
Mediterranean pine forests and shrublands. Slow growing and casting
a deep shade, the sclerophyllous holm oak ("Quercus ilex")
absolutely dominates the closed canopy of many Mediterranean
evergreen oak forests. This is a synthesis of 20 years of research
on the structure, function, and dynamics of holm oak forests in two
intensively studied experimental areas in Spain. By combining
observational measurements at the leaf, tree, plot, and catchment
scales with field experiments and modelling, the authors explore
how these forests cope with strong water limitation and repeated
disturbances.
Broadleaved evergreen forests where holm oak (Quercus ilex 1.) is
almost the only canopy tree are a distinctive ecosystem of the
Mediterranean Basin. Biogeographically, these forests lie between
cool-temperate deciduous forests to the north and drier shrublands
to the south. In a more general view, they are ecologically
intermediate between these deciduous forests and humid
warm-temperate evergreen forests, such as the laurisilva of the
Macarone- sian islands or the broadleaved evergreen forests of
eastern Asia. Holm oak forests are characterized by small-stature
trees (usually 5 to 12 m tall), which are slow growing, cast a deep
shade, and have small, evergreen, sclerophyl- lous leaves. Summer
drought is the major environmental constraint. Mediterranean
broadleaved evergreen forests have been underrepre- sented in the
open literature. For example, The Woodlands Data Set of the
International Biological Program (IBP) contained data from just one
holm oak forest plot, Le Rouquet in southern France (Reichle 1981).
Also, some models of European forests consider just two major
forest types, broad- leaved deciduous and evergreen conifers,
forgeting the extensive forests and woodlands of holm oak and cork
oak (Quercus suber 1.), which are the ma- jor evergreen oak tree
species in the Mediterranean Basin. The extensive lit- erature on
Mediterranean-type ecosystems has also largely neglected these
forests, being centred mostly on Mediterranean-type shrublands.
This book synthesizes knowledge from several fields that are crucial to sustainable rural development: the physical environment, biological and agricultural production, rural sociology and economics. It takes a systems perspective incorporating systems analysis, landscape analysis and soil, water, and land planning. Directed toward graduate students and professionals, it provides a source of information and concepts for those concerned with land and water policies and practice. It presents an integrated approach using practical and applicable models and methods and takes a middle position between an elementary conceptual approach to land and water management and a highly mathematically advanced treatise based exclusively on system modeling. The book is based on almost twenty years of experience in teaching a course on rural planning and the environment, the authors being specialists from universities, research institutions and companies in Europe and North America.
This book synthesizes knowledge from several fields that are
crucial to sustainable rural development: the physical environment,
biological and agricultural production, rural sociology and
economics. It takes a systems perspective incorporating systems
analysis, landscape analysis and soil, water, and land planning.
Directed toward graduate students and professionals, it provides a
source of information and concepts for those concerned with land
and water policies and practice. It presents an integrated approach
using practical and applicable models and methods and takes a
middle position between an elementary conceptual approach to land
and water management and a highly mathematically advanced treatise
based exclusively on system modeling. The book is based on almost
twenty years of experience in teaching a course on rural planning
and the environment, the authors being specialists from
universities, research institutions and companies in Europe and
North America.
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