[1]钟欣呈,许泉立.基于RSEI模型的玉溪市生态环境变化监测与评价[J].水土保持研究,2021,28(04):350-357.
　ZHONG Xincheng,XU Quanli.Monitoring and Evaluation of Ecological Environment Changes in Yuxi City Based on RSEI Model[J].Research of Soil and Water Conservation,2021,28(04):350-357.
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基于RSEI模型的玉溪市生态环境变化监测与评价

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 28 期数: 2021年04期 页码: 350-357 栏目: 出版日期: 2021-08-10
Title:
Monitoring and Evaluation of Ecological Environment Changes in Yuxi City Based on RSEI Model
文章编号:
1005-3409(2021)04-0350-08
作者:
钟欣呈1,2,3,4, 许泉立1,2,3,4
(1.云南师范大学 地理学部, 昆明 650500; 2.云南师范大学 西部资源环境GIS技术教育部工程研究中心, 昆明 650500; 3.云南省地理空间信息技术工程技术研究中心, 昆明 650500; 4.云南省高校资源与环境遥感重点实验室, 昆明 650500)
Author(s):
ZHONG Xincheng1,2,3,4, XU Quanli1,2,3,4
(1.Faculty of Geography, Yunnan Normal University, Kunming 650500, China; 2.GIS Technology Engineering Research Centre for West-China Resources and Environment, Ministry of Education, Yunnan Normal University, Kunming 650500, China; 3.Geospatial Information Technology Engineering Research Center of Yunnan Province, Kunming 650500, China; 4.Key Laboratory of Remote Sensing of Resources and Environment of Yunnan Province, Kunming 650500, China)
关键词:
生态环境质量;  遥感生态指数;  主成分分析;  变化监测;  玉溪市
Keywords:
ecological environment quality;  remote sensing ecological index;  principal component analysis;  change monitoring;  Yuxi City
分类号:
X826
文献标志码:
A
摘要:
城市化进程的不断推进引起了生态环境的改变,如何全方位、多尺度、长时间序列对城市生态环境质量动态监测是目前研究的一个重要方向。利用2005—2020年玉溪市的Lansat-5/TM和Lansat-8/OLI遥感影像为研究数据,计算绿度(NDVI)、湿度(WET)、干度(NDBSI)、热度(LST)4个生态指数,基于主成分分析法构建RSEI模型,对玉溪市16年来的生态环境质量进行监测与评价。结果表明:(1)2005—2020年玉溪市生态环境质量呈“S”型波动,RSEI均值从0.605下降到0.568,玉溪市生态环境有所下降,但总体处于中等水平。(2)生态环境质量差和较差的区域面积共增加了1 014.05 km2,而优和良的区域面积共减少了1 306.43 km2,其中生态环境质量较差的区域主要分布在元江干热河谷,生态环境质量较好的区域除元江干热河谷及建城区外均有分布,但最好区域位于哀牢山。(3)生态环境质量变差的面积为6 255.35 km2,占总面积的42.51%,而生态环境质量变好的面积仅2 514.26 km2,占总面积的17.08%,改善的区域主要集中在玉溪市中部和西南部,但西北部东部生态环境质量均出现退化。
Abstract:
The continuous progress of urbanization has caused changes of the ecological environment. How to monitor the dynamic quality of urban ecological environment in a comprehensive, multi-scale, and long-term sequence is an important direction of current research. Using the Landsat TM and OLI remote sensing images of Yuxi City from 2005 to 2020 as the research data, we constructed a model of Remote Sensing Ecological Index(RSEI)with four indicators(vegetation index, wetness index, normalize difference build-up and soil index and land surface temperature), and used principal component analysis to monitor and evaluate the ecological environment quality of Yuxi City during 16 years. The results show that:(1)the ecological environment quality of Yuxi City fluctuates as the S-shaped pattern in the period from 2005 to 2020, and the average RSEI decreased from 0.605 to 0.568; the ecological environment of Yuxi City has declined, but the overall level is at a moderate level;(2)ecological environment quality is poorer, and the poor area has increased by 1 014.05 km2, and the total area of the excellent and good grades of this region has decreased by 1 306.43 km2, of which the poorer areas with ecological environment quality mainly distribute in Yuanjiang dry-hot valleys, areas with good ecological environment quality distribute across Yuxi except Yuanjiang dry-hot valleys and Jiancheng District, but area with the best ecological environment quality is located in the Ailao Mountain;(3)the area where the ecological environment quality becomes worse is 6 255.35 km2, accounting for 42.51% of the total area, while the area where the ecological environment quality becomes better is only 2 514.26 km2, accounting for 17.08% of the total area; the improved areas with improved ecological environment quality are mainly in the central and southwestern parts of Yuxi City, but the ecological environment quality in the northwest and eastern parts of the city is degraded.

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备注/Memo

收稿日期:2020-07-27 修回日期:2020-08-21
助项目:国家自然科学基金(41461038,41561086,41661082)
第一作者:钟欣呈(1996—),男,云南玉溪人,硕士研究生,研究方向:遥感生态环境监测。E-mail:981438505@qq.com
通信作者:许泉立(1975—),男,湖北武汉人,博士,副教授,研究方向:地理信息系统与智能体建模。E-mail:go2happiness@163.com

更新日期/Last Update: 2021-08-20