【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。更多还原

【Abstract】 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.更多还原