不同土地利用方式下紫色土坡地水土流失特征-以涪陵为例  

Soil Erosion Characteristics of Purple Soil Upland under the Different Land Use Types in Fuling District

作　　者：严风硕[1] 何丙辉[1] 刘立志[1] 

机构地区：[1]西南大学资源环境学院,重庆400716

出　　处：《亚热带水土保持》2009年第4期14-19,共6页Subtropical Soil and Water Conservation

基　　金：区域生态环境安全和生态经济系统重建关键技术研究与示范项目(2004BA604A05);涪陵区农发水土保持科研项目资助部分内容

摘　　要：通过对涪陵区水土保持监测分站径流小区2006年全年降雨、径流和泥沙流失观测资料进行分析,得出不同土地利用方式下径流泥沙流失规律。结果表明:在种植作物的小区,径流量、泥沙流失量均与降雨量呈正相关,相关系数最高达到了0.9763。6号弃土弃渣小区年径流量(7.99m3)与泥沙流失量(26.58kg/m3)均比其他小区大出许多。各小区径流量、泥沙流失量与降雨量或降雨强度间的关系可以用回归方程描述,经检验后均具有显著意义,能较好地表达拟合效果。The analysis was conducted on the observation materials of annual rainfall, runoff and sediment loss in Futing District of Soil and Water Conservation Monitoring Station in 2006. The results show that the in the crops plot, the runoff, sediment and rainfall both appear the positive correlation with the highest correlation coefficient of 0. 9763. While in the 6th waste soil and residue plot, the annual runoff of 7.99m^3 and the silt loss of 26.58kg/m^3 are much larger than that of in the other plots. The relations among runoff, silt loss, and rainfall or precipitation amount or intensity may be described by the regression equation. After the examination, they all have significant meaning to better express fitting effect.

关 键 词：紫色土 水土流失 径流量 泥沙流失量 坡耕地 

分 类 号：S157.1[农业科学—土壤学]