摘要
Restoring degraded grassland ecosystems is of great significance for the sustainable development of grassland ecological service functions and the sustainable and healthy development of regional economies and societies. Returning grazing land to grassland technology（RGLGT） is an important strategic technology for restoring degraded grassland ecosystems and achieving the sustainable development of the society and economy of pastoral areas in China. Researching the comprehensive evaluation system of the effects of RGLGT has an important significance for evaluating and adjusting national ecological policy. Based on collecting sample surveys from 221 farmers in 16 villages of 4 towns of Yanchi County, Ningxia Hui Autonomous Region in 2017, a model for evaluating the effects of implementing RGLGT was developed. The model included the characteristics of the technology, the ecological and social benefits of the technology, and the sustainability and economic benefits of the technology, it was used to complete a comprehensive effects evaluation of implementing RGLGT in Yanchi County that was based on use of the Analytic Hierarchy Process（AHP） method. The results showed that the comprehensive effect of implementing RGLGT is good overall and had a score of 0.5946. In terms of specific effects ranked from high to low, these were the ecological and social benefits of the technology, the economic benefits, the sustainability and the characteristics themselves. The implementation of RGLGT has resulted in good ecological and social benefits and economic benefits, but sustainability and characteristics of the technology are weak.
退化草地生态系统的修复对于草地生态服务功能的持续发挥、区域经济社会持续健康发展具有重要意义。退牧还草技术是国家为修复草地退化生态系统、促进牧区社会经济持续发展而实施的重大技术,退牧还草技术综合效益评价体系研究对技术实施的绩效评价及国家生态政策调整具有重要意义。本文基于2017年赴宁夏盐池县4乡镇16村获取的221份调研数据,运用层次分析法,构建包括技术自身特点、技术的生态社会效益、技术的可持续性及技术的经济效益四个方面的草地生态系统退化修复技术实施效果的综合评价模型,对宁夏盐池县退牧还草技术的实施效果进行了综合评价。评价结果表明:从总体看,退牧还草技术实施的综合效果良好,技术实施效果的综合评价得分为0.5946;从技术实施具体效果的评价结果来看,评价结果由高到低的排序为技术的生态社会效益、经济效益、技术的可持续性、技术自身特性;技术的实施取得了良好的生态社会效益及经济效益,但技术的可持续性及技术的自身特性评价较低。
基金
National Key Research and Development Program of Chian(2016YFC0503703)
West Projects of National Social Science Foundation(15XJY010)
Humanities and Social Sciences Research and Planning Fund Projects of Education Ministry in 2013(13YJA630141)
General Social Science Fund Project of Shaanxi Province in 2014(2014P21)
