三峡库区端坊溪小流域防护林土壤改良效应研究

Study on soil improvement of shelter-forest in Duanfangxi valley within the Three Gorges reservoir area

该文以土壤养分、容重、孔隙度、水分、下渗等指标为基础 ,采用时段对比法 ,全面分析了三峡库区端坊溪小流域防护林的土壤改良作用。结果表明 :随着林木的生长 ,防护林土壤改良作用明显 ;采用封山育林对改良防护林土壤结构效果显著。

Based on the soil index of nutrient,unit weight porosity,moisture and permeability,by the way of time contrast the affect on soil inprovement of shelter forest in Duanfangxi valley within the Three Goges reservoir area were all out analysed in this paper.The result showed that the effect of improvement of shelter forest were obvious with the growth of forest,the result of close hillsides to facilitate afforestation to improve soil structure of shelter forest were notable.