中国草原生态功能评价指标体系

草原生态系统是我国陆地上最重要的生态系统类型之一,其生态功能价值是巨大的.对草原生态功能指标体系评价的意义、指标筛选原则和方法等进行了总结,并在现行草原生态功能评估方法研究的基础上,进行了方法研究的新探索-将频度分析法、专家咨询法、层次分析法 (AHP)3种方法有机结合共同运用到评估工作中去,从而提出了一套较为科学的、公平的和可操作的评价指标体系.这一体系由8项元素组成,按权重由大到小依次为水土保持、涵养水源、固碳吐氧、维持生物多样性、净化空气、生态旅游、废弃物处理、营养物质循环.

Construction of evaluation indicator system of China grassland ecological function

The grassland ecosystem, one of the most important terrestrial ecosystems in China, has enormous ecological values. This article reviewed the significance and selection principles and methods of the current grassland ecological function evaluation indicator system. Based on the existing research results, new evaluation methods were explored. A more scientific, fair and operational evaluation indicator system is proposed by incorporation of Frequency Aanlysis, Expert Advice Method and Analytical Hierarchy Process into the evaluation process. This system consists of eight evaluation factors, including in order of significance, water and soil conservation, water holding, carbon fixation and oxygen release, biological diversity maintaining, air cleaning, eco-tourism, waste degradation, and nutrient recycling.