水土流失对农村贫困的影响  

Impact of Soil Erosion on Rural Poverty

作　　者：卢江勇[1,2] 陈功[1] 

机构地区：[1]北京大学人口研究所,北京100871 [2]琼州学院,海南三亚572022

出　　处：《安徽农业科学》2012年第32期15935-15938,共4页Journal of Anhui Agricultural Sciences

摘　　要：概述了我国农村贫困的总体状况及地区差异,指出水土流失较为严重的中西部地区农村的贫困状况表现尤甚。结合前人研究,以农业GDP为因变量,以耕地面积、农业劳动力、农业资本存量、灌溉面积、化肥用量等为自变量,建立了反映水土流失对农村贫困影响的C-D生产函数进行回归分析。结果表明,耕地、劳动力、资本、灌溉、化肥等生产要素对农业GDP有正效应,水土流失对农业生产有显著的负效应;我国西部的全要素生产力最低,水土流失也最为严重。为走出水土流失与农村贫困的双重困境,必须改变粗放的农业发展方式,保护生态环境,走农业生态集约发展之路。This article gives an overview of the general situation and regional differences of rural poverty in China,and points out that in the rural areas of central and western regions with serious soil erosion,the poverty is particularly prominent.Based on previous studies,we take agricultural GDP as the dependent variable,farmland area,agricultural labor,agricultural capital stock,irrigation area,and consumption of chemical fertilizer as the independent variables,to establish the CD production function reflecting impact of soil erosion on rural poverty for regression analysis.The results show that farmland,labor,capital,irrigation,chemical fertilizer and other production factors have a positive effect on agricultural GDP;soil erosion has a significant negative effect on agricultural production;in western China,the total factor productivity is the lowest and soil erosion is the most serious.In order to resolve the dilemma of soil erosion and rural poverty,it is necessary to change the extensive mode of agricultural development,protect the ecological environment,and take the road of intensive development of agroecology.

关 键 词：水土流失 农村 贫困发生率 C-D生产函数 

分 类 号：S157.1[农业科学—土壤学]