相对生态价值的等值换算方法

Equivalent Conversion Method on Relative Ecological Value

为了克服以往在生态系统功能评价中不同研究对象,尤其是不同研究区域之间套用功能系数或打分评价的缺陷,提出了一种生态功能价值的等值换算方法,并以甘肃省靖远县永新乡退耕还林和荒山封育功能评价为例进行了实际运用。结果表明,当地退耕还林的林地生态价值大于农作物生态价值加农业产值的总价值。该方法不仅克服了上述缺陷,而且实现了在生态功能评价中不同生态功能与农作物产值的可比性。

In order to overcome the deficiencies of different subjects,especially applied function coefficient between different research areas or evaluation by scoring in assessment of ecosystem function in the past. A method of equivalent conversion of ecological function value was proposed,and made practical use by an example of the evaluation function of farmland to forest and barren enclosure in Xinxiang forever of Jingyuan County of Gansu Province. Results showed that,ecological value of woodland by conversion of cropland to forest was greater than the total value with ecological value of crops and agricultural output in the locality. The method not only overcome the shortcomings of described above,but also achieve comparability of different ecological functions and crop production value in the ecological function evaluation. This method could be used to evaluate ecological value different ecological measures,especially for the value assessment of returning farmland to forest and public welfare.