中文摘要：

分析了纸房沟流域不同植被类型的土壤养分效应，结果表明，不同类型植被的土壤有机质、全氮、水解氮、速效磷均向土壤表层富集，但对养分的影响不同，从剖面上看，0～20cm〉20～40cm〉40～60cm；从不同植被类型看（全磷除外），乔木〉灌丛〉草本。土壤全氮、水解氮与土壤有机质之间呈显著的线性关系，而土壤全磷与土壤有机质的线性关系不显著。植被恢复过程中，土壤全磷含量变化很小。

英文摘要：

Effects of soil nutrient in the watershed of Zhifanggou Gully were studied. The results showed that all components tested in the soils with different vegetations had a trend to concentrate in the soil surface,including soil organic matter, total and available nitrogen,and available phosphorus. Their influences on the soil nutrients however,were different. From the view of soil profile ,the contents of the components tesrted were in the order of 0-20 cm〉20-40 cm〉40-60 cm; from the view of vegetation types,the or- der was arbor〉 shrub community〉 herbaceous community, exept for the total phosphours. Organic matter and total and available nitrogen were ingood linear relationship,which was not significant between organic matter and total phosphorus. The content of total phosphorus varied little in the process of vegetation restoration.