测绘通报 ›› 2023, Vol. 0 ›› Issue (8): 14-18,66.doi: 10.13474/j.cnki.11-2246.2023.0224

• 生态环境动态监测 • 上一篇    下一篇

天津市生态环境质量评价与时空演变分析天津市生态环境质量评价与时空演变分析

范雪山, 郑礼全, 陈志刚, 龚智伟   

  1. 安徽理工大学空间信息与测绘工程学院, 安徽 淮南 232001
  • 收稿日期:2023-03-13 发布日期:2023-09-01
  • 通讯作者: 陈志刚。E-mail:chenzhigang81@163.com
  • 作者简介:范雪山(1998-),男,硕士,主要研究方向为环境遥感与生态质量评价。E-mail:fanxueshan6@163.com
  • 基金资助:
    国家自然科学基金(41501544)

Evaluation and spatial-temporal evolution analysis of ecological environment quality in Tianjin

FAN Xueshan, ZHENG Liquan, CHEN Zhigang, GONG Zhiwei   

  1. School of Space Information and Surveying Engineering, Anhui University of Science and Technology, Huainan 232001, China
  • Received:2023-03-13 Published:2023-09-01

摘要: 生态环境质量是衡量一个区域宜居水平的关键指标,动态监测区域的生态环境质量变化,可为保护生态环境提供科学依据和决策支持。为探究天津市近年来生态质量变化,利用天津市2014、2017和2020年的遥感影像,在遥感生态指数(RSEI)指标的基础上,加入人口密度(PD)、气溶胶光学厚度(AOD)两种指标,利用主成分分析法构建改进型遥感生态指数(MRSEI),对天津市的生态环境质量变化进行分析。结果表明: ① MRSEI有一定合理性,可更加全面地评价生态环境质量。② 绿度(NDVI)和湿度(WET)与MRSEI呈正相关,而热度(LST)、干度(NDBSI)、PD、AOD与MRSEI呈负相关。③ 天津市2014、2017和2020年的MRSEI分别为0.59、0.54和0.67。④ 天津市生态质量向南扩展。南部生态环境偏差,北部生态环境偏好,但差距正逐渐缩小。⑤ 林地的MRSEI均值为0.75,灌木为0.73,耕地为0.68,草地为0.57,不透水面为0.43,荒地为0.28。综上,本文基于改进型遥感生态指数更加全面地评价了天津市2014-2020年的生态环境质量,为区域的生态治理提供了参考依据。

关键词: 生态环境质量, 动态监测, 天津市, RSEI, 主成分分析

Abstract: Ecological environment quality is a key index to measure the livable level of a region. Dynamic monitoring of regional ecological environment quality changes can provide scientific basis and decision support for ecological environment protection. To study the ecological quality changes in Tianjin in recent years, a modified remote sensing ecological index (MRSEI) was constructed by adding two indicators, population density (PD) and aerosol optical depth (AOD), based on the remote sensing ecological index (RSEI) index using principal component analysis. The change of eco-environmental quality in Tianjin was analyzed. The results showed that: ① MRSEI is reasonable and can be used to evaluate eco-environmental quality more comprehensively. ② Greenness (NDVI) and humidity (WET) were positively correlated with MRSEI value, while heat (LST), dryness (NDBSI), PD and AOD were negatively correlated with MRSEI value. ③ The MRSEI values in Tianjin in 2014, 2017 and 2020 were 0.59, 0.54 and 0.67, respectively. ④ The ecological quality of Tianjin expanded to the south, the ecological environment deviation in the south and the ecological environment preference in the north, but the gap was gradually narrowing. ⑤ The mean value of MRSEI of forest land is 0.75, shrub is 0.73, cultivated land is 0.68, grassland is 0.57, opaque water is 0.43, and wasteland is 0.28. In conclusion, based on the improved remote sensing ecological index, this paper evaluated the ecological environment quality of Tianjin from 2014 to 2020 in a more comprehensive way, providing reference for regional ecological governance.

Key words: ecological environment quality, dynamic monitoring, Tianjin city, RSEI, principal component analysis

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