摘要
【目的】对河南省焦作市域生态环境质量进行客观评价与分析,为生态环境的治理和保护提供参考依据。【方法】以河南焦作市域为研究对象,基于Landsat系列遥感影像,利用主成分分析的方法耦合绿度、湿度、热度和干度构建遥感生态指数(remote sensing ecological index,I_(RSE))模型,分析焦作市域20 a的生态环境质量时空分布特征,同时采用地理探测器模型,分析绿度、湿度、热度、干度、植被覆盖度、土地利用类型、人口数量、夜间灯光强度、降雨量和海拔这10个驱动因子对I_(RSE)的影响强度。【结果】1)2000、2010和2020年焦作市域遥感生态指数均值分别为0.452、0.545、0.562,生态环境质量水平呈现逐步上升的趋势;空间分布上表现为北部山地生态环境质量优良,中部主城区的生态环境质量也得到明显改善。2)研究期内,I_(RSE)的等级存在分级转化,前10 a跨等级间的转化较多,等级演变比较剧烈,后10 a跨等级间转化不多,等级演变相对较稳定,生态环境质量的动态变化以稳定和改善为主。【结论】本研究分析的20 a遥感生态因子中干度与湿度是焦作市域生态环境质量变化的主要驱动因子,自然社会因子中植被覆盖度和土地利用类型变化是关键性因子,而与城市化发展密切相关的夜间灯光强度的影响力上升趋势明显。
【Objective】An objective evaluation and analysis of the ecological environment quality in Jiaozuo area of Henan Province was conducted to provide a reference for the management and protection of the ecological environment.【Method】Taking Jiaozuo City in Henan Province as the research object,based on the Landsat series of remote sensing images,the remote sensing ecological index(I_(RSE))model was constructed by coupling greenness,humidity,heat and dryness by using the method of main component analysis to analyze the spatial and temporal distribution characteristics of ecological environment quality in Jiaozuo City in the past 20 years.Additionally,a geographical detector model is employed to analyze the impact intensity of ten driving factors on I_(RSE),including greenness,humidity,heat,dryness,vegetation coverage,land use type,population,night light intensity,precipitation and altitude.【Result】1)In 2000,2010 and 2020,the average I_(RSE) values of Jiaozuo City were 0.452,0.545 and 0.562,respectively,with the ecological quality exhibiting a progressive upward trend.Spatially,the northern mountainous areas maintain excellent ecological conditions,while the central urban district also witnessed significant improvements in environmental quality.2)During the study period,there had been a stratified transition in the I_(RSE) levels,with more inter-grade transformations occurring in the first decade,indicating a more pronounced evolution.In the subsequent decade,the inter-grade transitions were fewer,and the grade evolution was relatively more stable.The dynamic changes in ecological environment quality were mainly characterized by stability and improvement.【Conclusion】In the past 20 years,dryness and humidity are the main driving factors of ecological environment quality change in Jiaozuo City,vegetation coverage and land use change are the key factors among the natural and social factors,and the influence of night light intensity,which is closely related to urbanization development,has an obvious upward trend.
作者
杨慧敏
张宇飞
王德彩
YANG Huimin;ZHANG Yufei;WANG Decai(College of Forestry,Henan Agricultural University,Zhengzhou 450046,China)
出处
《河南农业大学学报》
北大核心
2025年第4期686-697,共12页
Journal of Henan Agricultural University
基金
国家自然科学基金面上项目(42171058)。
关键词
生态环境质量
遥感生态指数
地理探测器模型
驱动因子
ecological environment quality
remote sensing ecological index
geographical detector model
driving factors
