Effects of vegetation and slope aspect on water budget in the hill and gully region of the Loess Plateau of China
作者： Li Wang , Sanping Wei , Robert Horton , Ming'an Shao
DOI: 10.1016/J.CATENA.2011.05.010
关键词: Vegetation 、 Hydrology 、 Stemflow 、 Soil water 、 Water balance 、 Environmental science 、 Throughfall 、 Vegetation and slope stability 、 Soil science 、 Surface runoff 、 Interception
摘要: Precipitation, throughfall, stemflow and soil water content were measured, interception, transpiration, evaporation, runoff, deep percolation recharge estimated in the natural Liaotung Oak (Quercus liaotungensis) regrown Black Locust (Robinia pseudoacacia) forestlands hill gully region of China Loess Plateau. Four stands (south- north-facing slopes) two forests studied between May 27, 2006 October 31, 2007. Hydrological fluxes calculated using a coupled heat flow model called CoupModel. Throughfall, used to calibrate model. The simulations indicated that, vegetation transpiration evaporation main components consumption 4 stands, accounting for about 90% precipitation. simulated interception south-facing slope (154 327 mm forestland 173 338 forestland) lower than those (219 344 203 342 forestland). Soil (416 373 was larger that (325 330 same stands. This mainly due greater density slope. For forestlands, under (90 mm) (76 mm), had largest (104 mm). results species aspects significantly influenced balance budget soil-vegetation-atmosphere system. differences among indicate care is required properly selecting tree-species. conservation measures must be applied scientifically when converting farmland forest Plateau China, especially on slopes. (C) 2011 Elsevier B.V. All rights reserved.
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