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。
[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]①The 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 2020.②The 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.③In 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.
作者
丁雪
冯婧文
黄园园
施骏骋
王金亮
Ding Xue;Feng Jingwen;Huang Yuanyuan;Shi Juncheng;Wang Jinliang(Faculty of Geography,Yunnan Normal University,Kunming,Yunan 650500,China;Key Laboratory of Resources and Environmental Remote Sensing for Universities in Yunnan,Kunming,Yunan 650500,China;Center for Geospatial Information Engineering and Technology of Yunnan Province,Kunming,Yunan 650500,China;School of Information Science and Technology,Yunnan Normal University,Kunming,Yunan 650500,China)
出处
《水土保持通报》
CSCD
北大核心
2023年第3期96-104,128,共10页
Bulletin of Soil and Water Conservation
基金
国家重点研发计划政府间国际科技创新合作重点专项“利用地理空间技术监测和评估土地利用/土地覆被变化对区域生态安全的影响”(2018YFE0184300)
云南省自然科学基金项目(202101AT070052)
云南省教育厅项目(2022J0139)
云南师范大学博士研究生创新基金重点项目(YJSJJ21-A08)。
