摘要
以农作型小流域为研究对象,分析土地利用与拦蓄径流的关系,建立小流域拦蓄径流量与不同土地利用方式面积多元回归模型,分析不同类型土地的拦蓄径流量。结果表明:单位面积水田、梯田、坡耕地的拦蓄径流量分别为43.74万、1.81万、-28.00万m3.km-2,相对于水田和梯田而言,坡耕地对拦蓄径流具有抑制作用;单位面积有林地、灌木林地、疏幼林地、经果林地、草地的拦蓄径流量分别为-0.997万、105.50万、29.03万、1.05万、222.12万m3.km-2。
Taking the agro-type watershed as the research objective,the relationship between land use style and runoff intercept was studied according to the statistical data in the survey of the project ＂Water and Soil Conservation in Upper and Middle Reaches of the Yangtze River＂.Multiple regression model was constructed by using runoff interception as dependent variable,and by using area of different land use types as independent variable.The model was used to analyze the runoff interception of different land use types.The results showed that runoff interception reached 43.74×104 m3·km-2,1.81×104 m3·km-2,and-28.00×104 m3·km-2 at unit area paddy field,terrace,and hillside cultivated land respectively.The hillside cultivated land exerted inhibiting effect on runoff intercepting relative to paddy field and terrace.Runoff interception reached-0.997×104 m3·km-2,105.50×104 m3·km-2,9.03×104 m3·km-2,1.05×104 m3·km-2,and 222.12×104 m3·km-2 respectively at forest land,shrub land,thin young stand,economic fruit forest and grassland.
出处
《西北林学院学报》
CSCD
北大核心
2010年第3期50-53,共4页
Journal of Northwest Forestry University
基金
国家"973"项目专题"西南紫色土区水土流失综合调控原理与治理范式"(2007CB407207-01)
北京林业大学优秀青年教师科技创新计划(BLYX200927)
关键词
土地利用
拦蓄径流
紫色土区
land use
runoff interception
purple soil area
