草业科学2017，Vol.34Issue(1)：16-29,14.DOI:10.11829/j.issn.1001-0629.2016-0177
高寒牧区草地生态系统健康动态评价——以甘南地区为例
Dynamic assessment of alpine pasture grassland ecosystem health——A case study from the Gannan region
摘要
Abstract
The "Pressure-State-Response" (PSR) model considers the 3 ecosystem aspects of pressure,state,and response.Seventeen indicators were chosen to build a PSR indicator system for the assessment of alpine grassland ecosystem health in Gannan.Using the application of Analytic Hierarchy Process (AHP) and GIS/RS,alpine grassland ecosystem health was assessed from 2001 to 2013.Meanwhile,the spatial and temporal variation characteristics of ecosystem health assessment were analyzed.We found that grassland ecosystem health level can be graded as one of the following levels of health: very low,low,medium,high,and very high,which respectively amount to 3.82%,23.5%,0.82%,53.06%,and 18.81% of the total area.Grassland ecosystems of Zhuoni,Zhouqu,Diebu,Maqu,and Luqu were found to be very high in their level of health,while those of Hezuo,Lintan,and Xiahe were of low health.We also found that the Gannan alpine grassland ecosystem health showed an obviously declining trend over the past 13 years,with 68.01% of the total area deteriorating in health,27.75% staying the same,and only 4.18% improving.关键词
高寒牧区/草地生态系统/健康评价/GIS/RS/PSR模型/AHP分析Key words
alpine/grassland ecosystem/health evaluation/GIS/RS/PSR model/AHP method分类
农业科技引用本文复制引用
赵玉婷,李文龙,陈迪,余翠,赵新来,许静,郭旭临..高寒牧区草地生态系统健康动态评价——以甘南地区为例[J].草业科学,2017,34(1):16-29,14.基金项目
国家自然科学基金(31170430、41471450) （31170430、41471450）
国家社会科学基金(14CJY010) （14CJY010）
草地农业生态系统国家重点实验室开放基金(SKLGAE201406) （SKLGAE201406）
长江学者和教育部创新团队发展计划(IRT13019) （IRT13019）
中央高校基本科研业务费专项(lzujbky-2016-br05)和中央高校自由探索优秀研究生创新项目(2022016zr0185) （lzujbky-2016-br05）
