Evapotranspiration and Soil Moisture Balance for Vegetative Restoration in a Gully Catchment on the Loess Plateau, ChinaEnglish Full Text

HUANG Yi-Long1,2,3, CHEN Li-Ding3, FU Bo-Jie3, ZHANG Li-Ping1 and WANG Yan-Lin1,2 1Shenzhen Graduate School, Peking University, Shenzhen 51805S (China). 2 Department of Urban and Environment Sciences, Peking University, Beijing 100871 (China) 3Key Laboratory of Systems Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085 (China)

Abstract: Evapotranspiration, soil moisture balance and the dynamics in a gully catchment of the Loess Plateau in China were determined with 6 land use treatments including natural grassland, shrubs （Caragana microphylla）, two woodlands （Prunus armeniaca var. ansu and Pmus tabulaeformis）, cultivated fallow, and farmland （Triticum aestivum L.） in order to obtain a better understanding of soil moisture balance principles and to improve vegetation restoration efficiency for ecological rebuilding on the plateau. Average runoff from cultivated fallow was very high, reaching 10.3% of the seasonal rainfall. Evapotranspiration under T. aestivum was not significantly different from natural grasslands. Compared with natural grass, evapotranspiration was significantly greater （P ＜ 0.05） in 2002 and there was an increase in soil moisture depleted in the 1-3 m soil under P. armeniaca, P. tabulaeformis and C. microphylla. During the two years of the study the average soil moisture （0-100 cm soil profile） of T. aestivum was generally the highest, with P. armeniaca, P. tabulaeformis and C. microphylla usually the lowest. Thus, according to the soil moisture balance principle for this area the planned reforestation project was not ecologically reasonable. Reducing human disturbance and restoration with grass could be more effective.

Keywords：

ecological restoration; evapotranspiration; gully; Loess Plateau; soil moisture balance;

Series：
(D) Agriculture
Subject：
Agronomy; Fundamental Science of Agriculture
Classification Code：
S152.7

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