IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Alternative TitleThe Impacts and Evaluations of Catchment Scales on Forest Hydrology
沙玉坤; 程根伟; 李卫朋
Corresponding Author沙玉坤
Source Publication山地学报
Other AbstractThe influence of forest vegetation cover to terrestrial hydrological processes varies with the watershed size. But the accurate recognition and quantitative assessment to the scale effect are very difficult. In the paper the cause of scale effect of watershed to hydrological features is discussed, its impact mechanism and variation features are analyzed as well. The watershed size and forest distribution will change energy balance, potential evaporation, runoff components, flow’s velocity and channel storage capacity of a basin. These factors vary with forest area and watershed size. With the increasing of watershed size, the forest’s impact to hydrological processes gets lower and river channel’s effect becomes higher. The watershed scale will turn runways of runoff as well. The ratios of groundwater will increase and surface runoff decrease with the size increasing of watershed. This change in runoff composition may influent the flood hydrographs and low-flow discharges. The optimal forest coverage and suggested ratio have been suggested based on benefit maximum rule of ecological engineering. These results will help to identify the different effects between forest characteristics and watershed’s size, and can be applied to improve the estimation of forest-hydrology effects.
Keyword森林水文 流域尺度 影响机制 效应评价
Indexed ByCSCD
Funding Organization国家自然科学基金(31070405)
Citation statistics
Cited Times:1[CSCD]   [CSCD Record]
Document Type期刊论文
Recommended Citation
GB/T 7714
沙玉坤,程根伟,李卫朋. 森林水文作用的流域尺度效应及其评价[J]. 山地学报,2013,31(5):513-518.
APA 沙玉坤,程根伟,&李卫朋.(2013).森林水文作用的流域尺度效应及其评价.山地学报,31(5),513-518.
MLA 沙玉坤,et al."森林水文作用的流域尺度效应及其评价".山地学报 31.5(2013):513-518.
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