摘要
城市的快速发展往往会引起生态环境质量的变化,为了促使区域社会经济稳健可持续发展对其生态环境质量评估是非常必要的。以济南市作为研究对象,利用2002—2021年Landsat遥感影像数据,通过计算WET、NDVI、LST、NDBSI,运用主成分分析法对各个分量指标进行分析进而构建RSEI模型。结果表明:(1)2002—2021年济南市RSEI均值分别为0.529、0.502、0.565、0.591,呈先下降后上升趋势,总体处于中等水平;(2)生态环境改善地区主要分布在济南市西北部,生态环境退化地区主要分布在中部、北部、东南部;(3)济南市生态环境变化与NDBSI关系最密切,4年平均相关度为0.715,为进一步分析NDBSI指标对环境质量的影响,对其分量指标IBI和SI指标进行数值分析以及空间分析,IBI指标和SI指标4年平均值为0.565、0.356,通过空间分析IBI指标值较高区域范围与RSEI指标较低区域范围具有高度的吻合度,在NDBSI指标中IBI指标是对济南市生态环境质量产生负面影响的主要因素,表明城镇化的快速发展对生态环境造成一定程度的破坏。
The rapid development of city often causes the change of ecological environment quality.The NDVI index,WET index,LST index and NDBSI index were calculated by principal component analysis,using 2002-2021 Landsat remote sensing data.The RSEI model was constructed to monitor and evaluate the urban Eco-environmental quality of Jinan city in the past 19 years.The calculations showed that:(1)During the period of 2002-2021,the mean RSEI of Jinan City was 0.529,0.502,0.565 and 0.591,respectively.(2)The ecological environment improvement areas were mainly distributed in the northwest of Jinan,while the ecological environment degradation areas were mainly distributed in the central,northern and southeastern parts.(3)The change of ecological environment in Jinan was most closely related to NDBSI,with an average correlation of 0.715 in four years.In order to further analyze the impact of NDBSI index on environmental quality,the mean value statistics and spatial analysis of its component indexes IBI and SI index were carried out.The four-year average values of IBI index and Si index were 0.565 and 0.356.Through spatial analysis,the regional range with higher IBI index value was highly consistent with the regional range with lower RSEI index.Among the NDBSI indicator,IBI indicator was the main factor that had a negative impact on the quality of ecological environment in Jinan,indicating that the rapid development of urbanization had caused a certain degree of damage to the ecological environment.
作者
郑彩之
边振
桑国庆
ZHENG Caizhi;BIAN Zhen;SANG Guoqing(College of Water Conservancy and Environment,University of Jinan,Jinan 250022,China)
出处
《生态科学》
CSCD
北大核心
2024年第5期175-182,共8页
Ecological Science
基金
国家自然科学基金项目(31400619)
山东省水土保持学会重点领域创新项目(sdsbxh-2019-01
sdsbxh-2018-04)。
关键词
遥感生态指数
生态环境质量
主成分分析
济南市
remote sensing ecological index
ecological environment quality
principal component analysis
Jinan City
