基于遥感生态指数的绵阳市区生态环境变化分析.doc

基于遥感生态指数的绵阳市区生态环境变化分析


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　　摘 要：基于1996、2009和2018年LandsatTM/OLI遥感影像，采用RSEI指数对绵阳市区的生态环境及变化状况进行分析。结果显示，1996-2009年绵阳市区生态质量呈下降趋势，;2009-2018年生态质量有所改善，;各年份的评价指标标准差与PC1荷载值的绝对值呈正相关。定量分析绵阳市1996-2018年快速发展对城市生态环境的影响，得出结论：1996-2018年间，涪城区和游仙区环境质量改善明显，环境质量下降的区域多分布于涪江沿岸;与指标相关的地物种类越多、面积占比越大，对环境影响越强;随着绵阳市区的发展，对环境影响最大的指标由1996年的绿度变为2018年的干度。提升城市环境，需合理配置城市建设用地，多种类多面积进行城市绿色生态建设。
　　关键词：Landsat影像;遥感生态指数;生态环境质量
　　DOI：10. 11907/rjdk. 192195
　　中图分类号： 文献标识码：A 文章编号：1672-7800（2020）003-0230-04
　　Analysis of Ecological Change in Mianyang Using Remote Sensing
　　Based Ecological Index
　　CHEN Meng1，2，WEN Xing-ping1，2，ZHANG Hao-nan1，2，XU Jun-long1，2，LI Qian1，2
　　（1. Faculty of Land Resource Engineering， Kunming University of Science and Technology;
　　2. Mineral Resource Prediction and Evaluation Engineering Laboratory of Yunnan Province， Kunming 650093，China）
　　Abstract： Quantitative analysis of the impact of development of Mianyang urban on ecological from 1996 to 2018 was made based on Landsat TM/OLI remote sensing images in 1996， 2009 and 2018， RSEI was used to measure the urban ecology of Mianyang. The results showed that the ecological quality decreasing trend from 1996 to 2009， with the average value of RSEI decreased from to . From 2009 to 2018， the average value of RSEI rose slightly from to . At the same time， it was found that the index standard deviation was positively correlated with the absolute value of PC1. From 1996 to 2018， the quality of old urban areas of Fucheng and Youxian improved significantly， and most of the regions with reduced environmental quality were located along the Fujiang river， indicating that the more kinds of objects related to the index and the larger proportion of the area， the stronger the impact on the environment.