|Table of Contents|

Spatial-temporal Variation Characteristics of Ecological Environment Quality and Their Driving Forces in Guanzhong Plain Urban Agglomeration, China(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2023年第06期
Page:
1316-1329
Research Field:
环境与可持续发展
Publishing date:

Info

Title:
Spatial-temporal Variation Characteristics of Ecological Environment Quality and Their Driving Forces in Guanzhong Plain Urban Agglomeration, China
Author(s):
LUO Yi-zhen;  HUANG Yuan-cheng*;  WANG Tao
(College of Geomatics, Xi'an University of Science and Technology, Xi'an 710054, Shaanxi, China)
Keywords:
ecological environment;  RESI;  geodetector;  geographic weighted regression;  Google Earth Engine platform;  remote sensing image;  driving factor;  Guanzhong Plain
PACS:
X821
DOI:
10.19814/j.jese.2023.03035
Abstract:
In order to find the spatial-temporal variation and development trends of ecological environment quality in Guanzhong Plain urban agglomeration from 2000 to 2020, the Google Earth Engine(GEE)platform was used to optimize the reconstruction of MODIS images of Guanzhong Plain from June to September during 2000-2020, and remote sensing ecological index(RSEI)was constructed with greenness, humidity, temperature and dryness; the spatial-temporal variation of ecological environmental quality in the region were analyzed; a geodetector model was used to quantify the effects of ten environmental and human factors on the changes of RSEI, and a regression model was constructed by geographic weighted regression(GWR)to analyze the spatial differences of driving factors. The results show that ① from 2000 to 2020, the ecological environmental quality in Guanzhong Plain urban agglomeration improves year by year; the average RSEI increases from 0.448 to 0.565, with a high distribution in the south and a low distribution in the north. ② The improved area of ecological environmental quality in Guanzhong Plain urban agglomeration accounts for 70.8%, and the degraded area accounts for 22.9%; the improved area remarkably distributes in Qingyang city, Pingliang city and Tianshui city, and the degraded area mainly distributs in Xi'an city and its surrounding areas. ③ The vegetation type has the greatest impact on the ecological and environmental quality of Guanzhong Plain, with an impact power of up to 0.46. During the study period, the overall ecological environmental quality in Guanzhong Plain urban agglomeration improves with local deterioration in cities with intensive human activities and their surrounding areas.

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Last Update: 2023-12-01