论文部分内容阅读
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 shortcomings of applying functional coefficient or scoring evaluation to different research objects, especially different research areas, in the past, this paper put forward a method of equivalent value conversion of ecological function value. Taking Jingyuan County of Gansu Province as an example, Xinxiang, returning farmland to forests and barren hills enclosure function as an example for practical application. The results show that the ecological value of forestland converted from farmland to forestland is greater than the total value of crop ecological value and agricultural output value. The method not only overcomes the above shortcomings, but also realizes the comparability of different ecological functions and crop output in the evaluation of ecological functions.