2 Global Distribution , Diversity and Human Alterations of Wetland Resources
نویسنده
چکیده
This chapter outlines the distribution and diversity of wetland resources and examines the types of human activities that have resulted in widespread alteration. The term 'wetland' has a variety of meanings, and examples are given of the terminology used to describe different types of wetlands. The processes responsible for the formation and persistence of wetlands are indicated and consideration is given to human perceptions of these ecosystems and threats to them from both natural and anthropogenic activities.
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