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基于遥感生态指数的焦作市生态环境动态监测与评价
张娟, 文广超, 王恩营, 谢洪波, 刘正疆
河南理工大学 资源环境学院, 河南 焦作 454000
摘要:
[目的] 探究河南省焦作市其近20 a来生态环境质量演化特征,可为该市及其他资源枯竭型城市生态建设提供科学参考。[方法] 选取2000,2006,2009,2014和2019年5期Landsat影像数据,耦合绿度、湿度、温度及干度4个指标,通过主成分分析法建立遥感生态指数(RSEI)评价模型,对焦作市生态环境质量进行定量评价。[结果] ①2000-2014年,焦作市生态环境质量为倒"U"形曲线,2014-2019年生态环境质量好转;②城镇人口占比增幅变缓及产业结构由第二产业向第三产业转变改善了焦作市生态环境质量;③回归分析中所选4个指标中对焦作市生态环境变化影响的重要程度表现为:干度 > 湿度 > 绿度 > 热度。[结论] 遥感生态指数对资源枯竭型城市生态环境质量可进行有效监测与评价。
关键词:  生态环境质量  遥感生态指数  人类活动胁迫  资源枯竭型城市  河南省焦作市
DOI:10.13961/j.cnki.stbctb.2020.06.016
分类号:X821
基金项目:旱区地下水文与生态效应教育部重点实验室开放基金项目“面向生态的旱区区域地下水资源评价研究”(2014G1502022);河南理工大学博士基金项目“巴音河流域下游溢出带变迁的动力学机制及其生态效应”(B2020-54)
Dynamic Monitoring and Evaluation of Ecological Environment at Jiaozuo City Based on Remote Sensing Ecological Index
Zhang Juan, Wen Guangchao, Wang Enying, Xie Hongbo, Liu Zhengjiang
Institute of Resource and Environment, He'nan Polytechnic University, Jiaozuo, He'nan 454000, China
Abstract:
[Objective] The evolution of ecological environment at Jiaozuo City, He'nan Province in the past 20 years was studied in order to provide reference for the transformation of other resource exhausted cities.[Methods] The data of five Landsat image data are selected, which included images in 2000,2006,2009,2014 and 2019. The index system including four indicators of green degree, humidity, temperature and dryness, and a evaluation model of remote sensing ecological index (RSEI) was established by principal component analysis, which could evaluate quantitatively the ecological environment quality of Jiaozuo City.[Results] ① From 2000 to 2014, the ecological environment of Jiaozuo City can be presented by shape of an inverted "U", and the quality of ecological environment rose in the next five years. ② The slow urbanization process and the transformation of industrial structure from the secondary industry to the tertiary industry have improved the ecological environment quality of Jiaozuo City. ③ In the regression analysis, the importance of the four selected indicators on the ecological environment in Jiaozuo City was:dryness > humidity > greenness > heat.[Conclusion] Remote sensing ecological index can effectively monitor and evaluate the ecological environment quality of resource exhausted cities.
Key words:  ecological environment quality  remote sensing ecological index  human activity stress  resource exhausted city  Jiaozuo City of He'nan Province