人为引起土壤退化的驱动力分析  

Driving force for human-induced soil degradation

作　　者：陈义群[1,2,3,4] 董元华[1,3] 陈德强[2] 

机构地区：[1]土壤与农业可持续发展国家重点实验室,中国科学院南京土壤研究所,南京210008 [2]河海大学环境科学与工程学院,南京210098 [3]中国科学院南京土壤研究所-香港浸会大学土壤与环境联合开放实验室,南京210008 [4]中国科学院研究生院,北京100049

出　　处：《农业工程学报》2008年第S2期114-118,共5页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家"十一五"科技支撑计划(2006BAD10B05);中国科学院知识创新工程方向项目(KZCX3-SW-435)和(KSCX2-YW-N-51-02)资助

摘　　要：该文以2000年FAO世界土壤资源报告的数据为基础,分析了全球范围内人为引起的土壤退化及其原因,尤其探讨了农业活动引起的土壤退化情况,并对人为引起的严重土壤退化面积与人口密度和人均GDP的关系进行了分析,同时对中国的土壤退化趋势进行了预测。结果表明全球有65%的土壤在人为活动影响下呈现不同程度的退化;不合理的农业活动是人为引起土壤退化的重要原因;较高的人口密度易导致更为严重的人为引起土壤退化;人均GDP的提高有利于降低人为引起的严重土壤退化面积;增加投入,改善土地经营方式是缓解人口-土地压力的有效措施。Based on World Soil Resources Report 2000,the severity and dominant cause of human-induced soil degradation,together with the serious soil degradation due to agricultural activities in the world were discussed.The correlation between degree of human-induced soil degradation and population density,per capita GDP was analyzed in this paper,while the trend of serious human-induced soil degradation was predicted in China.The results showed that 65 percent of the world soil was degraded with human activities at different extents;improper agricultural activities were one of the major factors of land degradation;higher population densities may cause more serious degradation,while higher per capita GDP is helpful to control soil degradation.Increasing investment and improving land use type are effective measure to moderate pressure of population on land.

关 键 词：土壤退化 驱动力 人口密度 人均GDP 

分 类 号：S158.1[农业科学—土壤学]