紫色土丘陵区不同土地利用类型土壤抗蚀性特征研究  

Study on Soil Anti-erodibility of Different Land Utilization Types in Purple Soil Hilly Region

作　　者：史晓梅[1] 史东梅[1] 文卓立[1] 

机构地区：[1]西南大学资源环境学院,重庆北碚400716

出　　处：《水土保持学报》2007年第4期63-66,共4页Journal of Soil and Water Conservation

基　　金：国家"十五"科技攻关计划(2004BA604A05)资助

摘　　要：对紫色土丘陵区4种典型土地利用类型的土壤抗蚀性进行了研究,结果表明:(1)通过主成分分析,>0.25mm和>0.5 mm水稳性团聚体含量、结构体破坏率能较好地衡量紫色土不同土地利用类型的土壤抗蚀性能;(2)>0.25 mm和>0.5 mm水稳性团聚体含量均为竹林地>园地>传统农耕地>农林混作型耕地,结构体破坏率则表现为竹林地<园地<传统农耕地<农林混作型耕地;(3)不同土地利用类型水稳性指数差别明显,其中竹林地为0.868,其次是园地、农林混作型耕地,分别为0.704,0.627,传统农耕地为0.469。Based on the research of purple soil anti-erodibility under four land utilization types in purple soil hilly region,results show that:(1)With principal component analysis,>0.25mm & >0.5mm water stable aggregate composition and rate of structure deterioration could be used to indicate the purple soil anti-erodibility of different land utilization types;(2) >0.25 mm & >0.5 mm water stable aggregate composition were bamboo forest land > orchard> traditional farmland >tree-crop intercropping land,rate of structure deterioration were bamboo forest land < orchard <traditional farmland< tree-crop intercropping land;(3)The difference of water stable index based on different land utilization is obvious,bamboo forest land is 0.868,orchard(0.704) and tree-crop intercropping land(0.627)are secondary,traditional farmland is 0.469.

关 键 词：土壤抗蚀性 紫色土 不同土地利用类型 

分 类 号：S157.1[农业科学—土壤学]