滇东北山区坡耕地水土流失直接经济损失评估

THE DIRECT ECONOMIC LOSS OF SOIL EROSION OF SLOPING CULTIVATED LAND IN THE NORTHEAST MOUNTAIN REGION OF YUNNAN PROVINCE

应用新兴的环境经济评价理论和方法，定量测算了滇东北山区坡耕地水土流失的直接经济损失，包括养分流失损失、水分流失损失和泥沙流失损失３方面内容。

Using the new theory and techique of the economic valuation of environment(including market value techigue,shadow engineering techigue,etc.),the author in this paper calculated quantitatively the direct economic loss of soil erosion of the sloping cultivated land in the northeast mountain region of Yunnan province,which includes three parts,i.e. readily available nutrient loss,water loss and sediment loss.According to the price in 1990,the annual average direct economic loss of soil erosion of the sloping cultivated land in this region arrived at 17919 75×10 4yuan(Renminbi),and in it,the losses of readily available nutrient,water and sediment were respectively 5372 09×10 4yuan,760 30×10 4yuan and 11787 36×10 4yuan.