熵权法在草原生态安全评价研究中的应用——以甘肃牧区为例

The Application of Entropy-right Method to the Study of Ecological Security Evaluation of Grassland——A Case Study at the Ecological Security Evaluation of Grassland to Pastoral Area of Gansu

本文在生态安全评价状态-压力-响应概念框架模型的指导下,以甘肃牧区草原生态安全评价为例,将熵权法与综合评价法有机结合进行了甘肃牧区草原生态安全评价指标权重确定及评价结果计算,在一定程度上丰富和发展了区域生态安全评价方法。研究结果表明,采用该方法得到的评价结果与区域实际情况相吻合,说明其具有科学性和可行性。研究中采用熵权法确定评价指标权重减少了评价过程中的人为主观性的干扰,能够更客观地反映各评价指标对区域整体生态安全状况的贡献率,为区域生态安全定量化评价提供了新的研究手段和方法,在定量化评价研究领域具有一定的实用价值和推广意义。

This research applied Entropy -right Method and a comprehensive appraisal model to confirm every weight of indexes and calculate the result of evaluation, and taking the pastoral area of Gansu as an example under the guidance of model of ecological security evaluation, namely, State - Pressure - Response. The result indicated that conclusion of evaluation was identical with the regional actual situations, which proved this method was scientific and applicable in this field. The Entropy - right method was used to confirm the weight of indexes, which resolved the problem of many indexes had not uniform standard, and reduced the disturbance of subjectivity in the course of appraising while studying, and could reflect more objectively the contribution of every index to regional ecological security. The method offered a new research means and idea to evaluate regional ecological security quantificationally and had certain practical value and popularized meaning in the correlative field.