贵州省水土流失中土壤侵蚀经济损失估值

利用环境经济学的基本原理和方法 ,针对贵州省土壤侵蚀严重的现状 ,选择了土壤侵蚀造成的N、P、K及泥沙滞留、淤积 5种实物型损失作为衡量土壤侵蚀经济损失的指标 ,从场内损失与场外损失 2个方面估算出贵州省土壤侵蚀经济损失的货币化结果 ,并把土壤侵蚀经济损失的货币化值与经济建设的主要指标进行对比 ,以反映贵州省土壤侵蚀经济损失的程度 ,并阐明了一些过去尚未弄清的有关土壤侵蚀经济损失方面的概念。

Assessment of economic cost of soil erosion-a case study of Guizhou Province

Based on the present situation of the serious soil erosion, which is the consequence and a form of the comprehensive representation of ecological disturbance in Guizhou, and the basic principles and methodology of environmental economics, the amounts of N, P and K lost and amount of the soil detained and deposited as a result of soil erosion, were selected as the five major indexes for assessment of economic costs. Monetary values of the economic costs on-site and off-site were worked out. Comparison of the results with the main indexes of the economy construction in the province shows directly the extent of the economic costs resulting from the soil erosion there. The study has also clarified some concepts relevant to economic costs of soil erosion that were not fully understood before.