首页 | 本学科首页   官方微博 | 高级检索  
     检索      

宁南山区退耕还林还草效益评估研究
引用本文:米文宝,樊新刚,谢应忠.宁南山区退耕还林还草效益评估研究[J].干旱地区农业研究,2008,26(1):118-124.
作者姓名:米文宝  樊新刚  谢应忠
作者单位:1. 宁夏大学草业科学研究所,宁夏,银川,750021;宁夏大学资源环境学院,宁夏,银川,750021
2. 宁夏大学科学技术处,宁夏,银川,750021
3. 宁夏大学草业科学研究所,宁夏,银川,750021
基金项目:教育部科学技术重点项目(03140)
摘    要:从生态发展与区域自然、社会、经济复合协调的系统角度出发,建立分层评价指标体系,借鉴相关专家的研究成果推算直接测量比较困难的部分数据,并在总结目前生态效益评价定量方法的基础上,利用主成分分析法计算了近5年来宁南山区退耕还林还草产生的效益。结果表明,宁南山区退耕还林还草工程2004年发挥的效益是2000年的近2.2倍,各年的平均增长率都达到50%左右,生态效益逐步发挥,从时间序列上呈积累式增加趋势。

关 键 词:宁南山区  退耕还林还草  效益评估
文章编号:1000-7601(2008)01-0118-07
收稿时间:2006-07-05
修稿时间:2006年7月5日

Assessi ng benefits of the conversion of cropland to forest and grassland project i n the mountai n area of southern Ni ngxia
MI Wen-bao,FAN Xin-gang,XIE Ying-zhong.Assessi ng benefits of the conversion of cropland to forest and grassland project i n the mountai n area of southern Ni ngxia[J].Agricultural Research in the Arid Areas,2008,26(1):118-124.
Authors:MI Wen-bao  FAN Xin-gang  XIE Ying-zhong
Abstract:The paper sets up the index systems from the theory of social,economic and ecological complex system,and calculates the segmental data which are difficult to measure using relevant experts' research results for reference.Based on the method of quantitatively describing the ecological benefit,the paper uses the principal component analysis(PCA) to calculate the project of the Converting Slope Farmland into Forestland and Grassland during the last five years.The result shows that the ecological benefit of the project of Converting Slope Farmland into Forestland and Grassland in mountain area of southern Ningxia in 2004 is 2.2 times to 2002.The increase has average out at 50% every year.The ecological benefit is shown gradually and accumulating.
Keywords:mountain area of southern Ningxia  conversion of cropland to forest and grassland  assessing benefit
本文献已被 CNKI 维普 万方数据 等数据库收录!
点击此处可从《干旱地区农业研究》浏览原始摘要信息
点击此处可从《干旱地区农业研究》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号