基于遥感生态指数的桂林市生态环境质量评价

doi:10.16088/j.issn.1001-6600.2021101004

Abstract

Abstract: The assessment and monitoring of ecological environment quality is an important part of SDG15, and also an important indicator for the construction and performance evaluation of innovation demonstration zone of national sustainable development agenda. Based on the Landsat TM/OLI remote sensing image data of Guilin in 2001, 2006, 2015 and 2019, the improved remote sensing ecological index (RSEI) constructed by NDVI, WET, NDBSI and LST was calculated by principal component analysis. The ecological environment quality of Guilin from 2001 to 2019 was evaluated and monitored. The results showed that: RSEI could indicate the eco-environmental quality of Guilin city better. Among the single index factors, NDBSI has the greatest influence on eco-environmental quality, and LST was the least. From 2001 to 2019, the mean value of RSEI in Guilin increased from 0.51 to 0.65, with an increase of 27.45%. The regional ecological environment quality of 60.10% was getting better, and the improvement was mainly in one grade. The ecological environment of all districts and counties was improved, and the improvement was most prominent in Quanzhou County and Guanyang County. The mean value of RSEI of Quanzhou and Guanyang Counties increased by 0.184 and 0.182, respectively, and the proportion of the area with excellent and good ecological environment quality of the two counties increased by 38.42% and 35.27%, respectively. The spatial distribution pattern of eco-environmental quality in Guilin had an important relationship with the land use types and the regulation of spatial function zoning. The distribution of the worst and poor eco-environmental quality occupies the eco-spatial function area of Yangshuo County, and the eco-environmental monitoring and protection efforts need to be strengthened.

Key words: remote sensing based ecological index(RSEI), ecological environment quality, principal component analysis, Guilin, China

CLC Number:

X826

XIN Wenjie, MA Jiangming, WANG Yongqi. Evaluation of Ecological Environment Quality in Guilin City Based on RSEI[J].Journal of Guangxi Normal University(Natural Science Edition), 2023, 41(1): 200-212.

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Evaluation of Ecological Environment Quality in Guilin City Based on RSEI

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