%0 Journal Article
%T Crop cover factor estimating for soil loss prediction<br>黄土高原土壤侵蚀作物覆盖因子计算
%A ZHANG Yan
%A <br>张岩
%J 生态学报
%D 2001
%I 
%X Land use and crop characteristics influence soil loss obviously,so that a quantitative evaluation of the effect of different crops on soil loss(crop factor)is essential to land use and soil conservation planning.The effect of a given crop on soil erosion varies a great deal within the period from seeding to harvest because crop characteristics and canopy cover varies greatly in different seasons.Moreover,the distribution of the erosive rainfall within a year differs for different localities.Therefore,crop f...
%K soil loss prediction
%K crop cover factor
%K crop stage period
%K soil loss ratio<br>土壤侵蚀预报
%K 作物覆盖因子
%K 农作期
%K 土壤流失比率
%K 黄土高原
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=FE163E5DB2274E5937319DE98913EC37&aid=D56CE4BD8D71C9B5&yid=14E7EF987E4155E6&vid=659D3B06EBF534A7&iid=DF92D298D3FF1E6E&sid=208AC7DC28BD1EC6&eid=0C7160AA184DEC96&journal_id=1000-0933&journal_name=生态学报&referenced_num=25&reference_num=14