Dynamic Monitoring of Ecological Environmental Quality and Spatial Pattern Evolution of Urban Agglomeration in Central Yunnan from 2000 to 2020

Ding Xue; Feng Jingwen; Huang Yuanyuan; Shi Juncheng; Wang Jinliang

doi:10.13961/j.cnki.stbctb.2023.03.013

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Dynamic Monitoring of Ecological Environmental Quality and Spatial Pattern Evolution of Urban Agglomeration in Central Yunnan from 2000 to 2020

- Dynamic Monitoring of Ecological Environmental Quality and Spatial Pattern Evolution of Urban Agglomeration in Central Yunnan from 2000 to 2020
- Bulletin of Soiland Water Conservation Vol. 43, Issue 3, Pages: 96-104(2023)
- 作者机构：
  
  1. 云南师范大学地理学部,云南,昆明,650500
  2. 云南省高校资源与环境遥感重点实验室,云南,昆明,650500
  3. 地理空间信息工程技术研究中心, 云南,云南省,昆明,650500
  4. 云南师范大学信息学院,云南,昆明,650500
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2023.03.013
  CLC： X24;F301
- Published：2023
- 稿件说明：
移动端阅览
Ding Xue, Feng Jingwen, Huang Yuanyuan, et al. Dynamic Monitoring of Ecological Environmental Quality and Spatial Pattern Evolution of Urban Agglomeration in Central Yunnan from 2000 to 2020[J]. Bulletin of Soiland Water Conservation, 2023, 43(3): 96-104.
DOI：

Ding Xue, Feng Jingwen, Huang Yuanyuan, et al. Dynamic Monitoring of Ecological Environmental Quality and Spatial Pattern Evolution of Urban Agglomeration in Central Yunnan from 2000 to 2020[J]. Bulletin of Soiland Water Conservation, 2023, 43(3): 96-104. DOI： 10.13961/j.cnki.stbctb.2023.03.013.

摘要

[目的] 分析生态环境质量时空变化规律及其异质性，为政府及相关部门制定生态环境保护政策提供科学依据。[方法] 采用GEE(google earth engine)平台选取滇中地区2000—2020年Landsat影像，逐年提取遥感生态指数RSEI(remote sensing ecological index)，运用冷热点分析、标准差椭圆、生态环境重心转移等空间分析方法探索生态环境质量的时空演变规律。[结果] ①滇中城市群整体生态环境质量总体呈不断下降趋势，RSEI均值从2000年的0.51下降到2020年的0.46。②从空间分布上看，除个别年份外总体上滇中东部地区生态环境质量明显好于西部地区，生态环境质量较好的区域大多森林覆盖率较高。③近20 a来滇中城市群生态环境空间分布呈南—北方向，同时城市群生态环境质量整体呈现出一定的聚集性。[结论] 滇中城市群生态环境变差与城市群建成区高速扩展，气候异常，植被破坏，水土流失加剧等有着密切的关系，为此应加强生态建设，提升滇中城市群生态环境质量。

Abstract

[Objective] The temporal and spatial variation of ecological environmental quality and its heterogeneity were analyzed in order to provide a scientific basis for the government and relevant departments to formulate ecological environmental protection policies.[Methods] The google earth engine (GEE) platform was used to select Landsat images of central Yunnan Province from 2000 to 2020

and the remote sensing ecological index (RSEI) was extracted year by year. Spatial analysis methods such as hotspot analysis

standard deviation ellipse

and ecological environment gravity center shift were used to explore the temporal and spatial evolution of ecological environmental quality.[Results] ① The overall ecological environmental quality of the central Yunnan urban agglomeration showed a declining trend

and the average RSEI dropped from 0.51 in 2000 to 0.46 in 2020. ② The ecological environmental quality in Central and Eastern Yunnan Province was obviously better than in the western region

except for a few years. Most of the areas with better ecological environmental quality had greater forest coverage. ③ In the past 20 years

the spatial distribution of the ecological environment of the Central Yunnan urban agglomeration showed a north-south direction

and the overall ecological environmental quality of the urban agglomeration showed a certain degree of aggregation.[Conclusion] The deterioration of the ecological environment of the Central Yunnan urban agglomeration was closely related to the rapid expansion of the built-up areas of the urban agglomeration

climatic anomalies

vegetation destruction

and aggravation of soil erosion.

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