区域水土流失的社会经济分析——以湖南省为例

水土流失的社会动力是经济环境条件下市场调节失灵造成的成本外摊和收益外泄.以货币化形式综合评价区域水土流失的经济学影响,是完善生态环境恶化的预警机制和生态风险评估体系的根本趋势.文章在土壤侵蚀实物型损失估算基础上估算出湖南省土壤侵蚀的货币型经济损失,并分省、市(州)、县三个层次对其进行了社会经济分析.结果显示,全省水土流失的经济损失巨大,其中土壤侵蚀造成的养分流失经济损失最大;水土流失的经济损失地区差异明显,造成其地区差异的原因中,自然条件起决定作用,社会经济因素起放大作用;各县水土流失经济损失值的社会经济因子相关性排序为人均农业产值＞人均GDP＞农村人均纯收入＞人口密度＞人均耕地.

SOCIO-ECONOMIC ANALYSIS ON SOIL EROSION IN HUNAN PROVINCE

The social power of erosion occurring is the cost outside and the income release caused by the market regulation malfunction under the economic environment condition. To synthetic evaluate region erosion's economic influence by money is the basic tendency to perfect the early warning mechanism and the ecology risk assessment system for the ecological environment worsens. In the paper, the economical currency estimate of erosion lose in Hunan Provinceis obtained based on material object estimate of it, the s...