Dynamic monitoring of ecological environment quality in Jinan based on remote sensing ecological index
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.
remote sensing ecological indexecological environment qualityprincipal component analysisJinan City
万方数据
维普
