Effects of land use patterns on slope soil water in the semiarid Loess Plateau,China  

作　　者：JIAO Lei YANG Wenhui JIA Tian MAIERDANG Keyimu CHEN Weiliang GAO Guangyao WANG Shuai LIU Jianbo WANG Cong 

机构地区：[1]School of Geography and Tourism,Shaanxi Normal University,Xi'an 710119,China [2]State Key Laboratory of Urban and Regional Ecology,Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China [3]National Observation and Research Station of Earth Critical Zone on the Loess Plateau in Shaanxi,Beijing 100875,China [4]Faculty of Geographical Science,Beijing Normal University,Tianjin 300387,China [5]Tianjin Key Laboratory of Water Resources and Environment,Tianjin Normal University,Xi'an 710061,China

出　　处：《Journal of Geographical Sciences》2022年第4期701-716,共16页地理学报（英文版）

基　　金：National Key Research and Development Program of China,No.2017YFC0504701,No.2016YFC0501602;Natural Science Basic Research Plan in Shaanxi Province of China,No.2019JQ-767;Doctoral Foundation of Tianjin Normal University,No.52XB1910。

摘　　要：Land use patterns(LUPs)are the form in which various land use types are combined spatially,evidently impacting soil water.However,the influence mechanism by which LUPs form remains unclear.In this study,the soil water content(SWC)in the 0–160-cm soil depth was observed in shrubland(SL),mature forestland(MF),grassland(GL)and young forestland(YF)sites on four slopes with different LUPs in the Yangjuangou catchment of the Chinese Loess Plateau.The SWC in SL-YF-SL(13.28%)was significantly greater than that in YF-MF(9.93%),MF-GL-YF(10.38%)and SL-MF(10.83%)and was temporally stable during the study period.The spatial distribution of SWC along the slope differed among the four LUPs.Vegetation characteristics and soil texture mainly determined the spatial variations in SWC in the shallow soil layers(0–40 cm),while topographic factors were the determinants in the deep soil layers(60–160 cm)as well as in the entire soil profile(0–160 cm).The significance of SWC differences among the various land use patterns increased with decreasing precipitation during the growing seasons.YF-MF(77.8 mm)and SL-YF-GL(73.9 mm)required more rainwater than SL-MF(68.2 mm)and MF-GL-MF(67.5 mm)to compensate for the loss of soil water on the monthly scale during the rainy season.Therefore,vegetation restoration should consider land use patterns on hillslopes for soil water conservation.

关 键 词：land use patterns land management soil water resource vegetation restoration HILLSLOPE 

分 类 号：S152.7[农业科学—土壤学]