基于景观格局和遥感生态指数的马鞍山市生态质量分析

Ecological quality analysis of Maanshan City based on landscape pattern and remote sensing ecological index

为了揭示城市发展与生态环境质量之间的关系,选取马鞍山市2000、2010、2020年遥感影像数据,分析了其景观格局指数,同时借助遥感生态指数(RSEI),对马鞍山市生态环境进行监测和评价。结果表明:(1)由于建设用地增长,导致景观类型格局指数发生改变,其中斑块面积增长率为1.8%,增长速度与其他景观类型相比较快;(2)研究区2000、2010和2020年RSEI均值分别为0.573、0.781和0.648,总体呈先上升后下降趋势,反映植被覆盖度和人造地表的绿度指标和湿度指标对马鞍山市生态环境质量的贡献最大;(3)景观格局与生态环境质量变化在空间上基本吻合,能反映生态质量变化,研究可为马鞍山市生态文明建设和城市国土空间优化提供科学依据。

In order to reveal the relationship between urban development and ecological quality,this paper selects remote sensing data from 2000 to 2020 to analyze the landscape pattern index,and uses RSEI index to monitor and evaluate the ecological environment of Maanshan City.The results show that:(1)The increase of construction land has led to the change of landscape pattern index,and the growth rate of patch area is 1.8%,which is faster than other landscape types;(2)The average values of RESI in 2000,2010 and 2020 are 0.573,0.781 and 0.648,respectively,and the overall trend increases first and then decreases,reflecting that the vegetation coverage and artificial land surface greenness and dryness index contributes the most to the ecological environment quality in Maanshan City;(3)The changes of landscape pattern and ecological environment quality are basically consistent in space.The research can provide scientific basis for the optimization of urban land spatial pattern,the improvement of urban ecological environment and the construction of ecological civilization city in Maanshan.