水土保持研究2011，Vol.18Issue(5)：119-123,5.
黄土高塬沟壑区典型小流域水土保持措施蓄水保土效益分析
Benefit Analysis of Soil and Water Conservation Measures in Controlling Soil and Water Loss in Small Watershed of the Loess Plateau Gully Region
摘要
Abstract
This paper chose Yangjiagou（manmade） and Dongzhuanggou small watershed（natural） which are two different kinds of small watersheds in gully area of Loess Plateau as research sites,by determining their indices,including soil bulk density,porosity,fertility,particle,runoff and sediment,contrasted effectiveness of soil and water conservation measures in different watersheds,theories supporting can be provided for soil and water conservation management.The results showed that,the averages of soil bulk density in 0-20 cm on upper slope,middle slope,and lower slope of Yangjiagou small watershed are equal to Dongzhuanggou＇s 89%,87%,96%.In certain runoff,the average for many years of Yangjiagou＇s sediment transport coefficient were 1 045 t/km2,then Dongzhuanggou＇s was 4 333.1 t/km2,Yangjiagou＇s sediment transport coefficient was about Dongzhuanggou＇s 40%,the average of available phosphorus in soil of Yangjiagou small watershed was 2.05 mg/kg,Dongzhuanggou＇s was 1.25 mg/kg,in the shallow soil（0-20 cm）,available potassium of Yangjiagou small watershed was 399.6 mg/kg,Dongzhuanggou＇s was just 303.2 mg/kg,equivalent to Yangjiagou＇s 68%,other index of soil in Dongzhuanggou small watershed,such as total nitrogen,organic matter amounted to Yangjiagou＇s 62%,85%.关键词
黄土高塬沟壑区/小流域/水土保持/效益分析Key words
Loess Plateau gully region/small watershed/soil and water conservation/benefit analysis分类
农业科技引用本文复制引用
朱悦,姜丽华,毕华兴,吴智洋,云雷,高路博,雷娜,许华森,鲍彪..黄土高塬沟壑区典型小流域水土保持措施蓄水保土效益分析[J].水土保持研究,2011,18(5):119-123,5.基金项目
国家重点基础研究发展计划＂水土流失综合调控原理与治理范式 （）
