The catchment space for water, used as an expedient to apply water space theory at catchment scale, is one kind of space that encompasses river and its branches, linked lakes, wetlands and other kinds of water bodies, floodplains and partial slops that directly affected by flood, as well as the corresponding aquifer systems within these areas.Modification of catchment areas by human activity has led to dramatic changes in the flow of water.The overuse of land has destroyed lateral and vertical pathways taken by water draining to a stream, and disturbed runoff process and redistribution of rainfall, which has lowered water readjustment ability of lands within the catchment areas.As a result of human impact, hydrological function of water storage, water detention and groundwater recharge through lands within catchment area have been decreased, but meanwhile flood and drought disasters have been increased.These problems have been paid much more attention by hydrologists and ecologists recently.How to restore and protect hydrological functions of lands along river has become one of important aims in catchment management.Space for water, provided as one of solutions to achieve sustainable water resource use, puts emphasis on these spaces like wetlands, forests, lakes and floodplains and their important hydrological role of water cycle and their influence on sustainable utility of water resource.Through these analyses, the concept of the catchment space for water is provided, based on the concept of space for water, and the connotation, classification, boundary, measurement, structure and characteristics of catchment space for water are discussed.Framework of the study is then proposed, aiming at setting up theory frame of catchment space for water and providing theoretical instruction and technical support for integrated water and land management at catchment scale.
YANG Bo, DENG Wei
. Primary Study on Catchment Space for Water[J]. SCIENTIA GEOGRAPHICA SINICA, 2006
, 26(3)
: 316
-320
.
DOI: 10.13249/j.cnki.sgs.2006.03.316
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