干旱区研究2011，Vol.28Issue(4)：586-591,6.
半干旱黄土区沟间地浅沟分布特征
Study on Distribution of Ephemeral Gullies in Semiarid Loess Area
摘要
Abstract
Ephemeral gully（EG） erosion is one of the important ways of soil erosion in semiarid loess area.Extraction of ephemeral gullies from small watersheds was based on the SPOT image of Wuqi County in 2004,and the correlations between land use,slope and distribution of ephemeral gullies above shoulder line of valleys were analyzed based on the investigated date of land use in 35 small watersheds in Wuqi County,north Shaanxi Province.The results reveal that the EG density was in an order of hilly dry land woodland grassland;the EG density is significantly different from different land use types.Correlation analysis reveals that there was a positive correlation between the average slope and EG density in the same land use types,and ephemeral gullies are mainly distributed in a slope range from 25° to 35°.The study results can be referred in regenerating the ecology and conserving water and soil.关键词
浅沟密度/坡度/土地利用/土壤侵蚀/黄土丘陵区/吴起县/陕北Key words
density of ephemeral gully/slope/land use/soil erosion/Loess hilly-gully region/Wuqi County/north Shaanxi Province分类
农业科技引用本文复制引用
赵维军,许智超,张岩,朱岩,朱清科..半干旱黄土区沟间地浅沟分布特征[J].干旱区研究,2011,28(4):586-591,6.基金项目
十一五科技支撑课题"困难立地工程造林关键技术研究"(2006BAD03A0302) （2006BAD03A0302）
交叉学科北京市重点学科建设项目资助 （）
