祁连山自然保护区旅游景点整改前后的生态变化  

Ecological changes before and after the reform of tourism development zone in Qilian Mountains National Nature Reserve

作　　者：李宗省 王旭峰 冯起 张百娟 桂娟 赵越 薛健 李玉辰 段然 LI Zong-xing;WANG Xu-feng;FENG Qi;ZHANG Bai-juan;GUI Juan;ZHAO Yue;XUE Jian;LI Yu-cheng;DUAN Ran(Key Laboratory of Ecohydrology of Inland River Basin/Gansu Province Qilian Mountains Eco-environmental Research Center,Northwest Institute of Eco-environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China)

机构地区：[1]中国科学院西北生态环境资源研究院,内陆河流域生态水文重点实验室/甘肃省祁连山生态环境研究中心,甘肃兰州730000

出　　处：《环境生态学》2021年第11期1-8,14,共9页Environmental Ecology

基　　金：国家重点研发计划项目(SQ2019YFC050024-01);第二次青藏高原综合科学考察研究项目“生态安全屏障功能与优化体系”(2019QZKK0405);甘肃省创新群体项目(2021274);陇原青年创新创业团队项目(2021012);国家“万人计划”青年拔尖人才项目资助。

摘　　要：基于MODIS数据和像元二分模型,对祁连山自然保护区内旅游景点不同时期的增强型植被指数EVI和植被覆盖度进行对比分析。结果表明:1)在2010—2015年,仅有1/3的旅游景点植被EVI值增加,其他大部分旅游景点EVI均有所降低。2015—2019年,84%的整改旅游景点植被EVI值均有增加,但增幅各异。2)2019年相较2010年,旅游景点的高、中、低植被覆盖度面积的转化量分别为8%、4%和-12%。3)相比2010—2015年,2015—2019年植被退化类型和稳定类型面积分别减少了28%和36%,植被改善类型增加了64%,反映出在系统修复治理下祁连山自然保护区旅游景点的植被恢复成效明显,未来亟待构建可持续发展模式以促进生态屏障功能的持续提升。Based on the MODIS data and dimidiate pixel model,the Enhanced Vegetation Index(EVI)and vegetation coverage in tourism development zones of Gansu Qilian Mountains National Nature Reserve were compared and analyzed.Results showed that:(1)From 2010 to 2015,EVI value of vegetation increased in only one third of the tourist areas,while EVI value of most of the tourist areas decreased.In 2015—2019,the EVI value of vegetation in 84% of the modified tourist areas increased,but the increase rate was different.(2)Compared with 2010,the transformation of vegetation coverage of high,medium and low vegetation in the whole tourist area was 8%,4% and-12%,respectively,in 2019.(3)In 2015—2019,the types of vegetation degradation and stability in the study area reduced by 28% and 36%,respectively,than in 2010—2015,the type of vegetation improvement increased by 64%,and the vegetation coverage was mainly improved.The above studies showed that vegetation is gradually recovering in tourism development zones of Gansu Qilian Mountains National Nature Reserve.

关 键 词：祁连山自然保护区 EVI 植被覆盖度 旅游开发区 

分 类 号：Q948[生物学—植物学] X36[环境科学与工程—环境工程]