水土保持通报2024，Vol.44Issue(1)：284-292,9.DOI:10.13961/j.cnki.stbctb.2024.01.028
2010-2020年陕西省神木市生态环境质量时空演变及其驱动因素
Spatial-temporal Evolution of Ecological Environmental Quality and Driving Factors in Shenmu City of Shaanxi Province from 2010 to 2020
摘要
Abstract
[Objective]The changes of ecological environmental quality were analyzed at Shenmu City of Shaanxi Province,an important area for ecological protection and construction in the Yellow River basin,in order to provide a scientific basis for ecological environmental management,restoration,and green development in this resource-based city.[Methods]Landsat remote sensing images in 2010,2015,and 2020 were selected,and the remote sensing ecological index(RSEI)was constructed as an ecological environmental evaluation index by using the principal component analysis method to analyze the spatial and temporal evolution pattern of ecological environmental quality in Shenmu City.The ecological environmental driving mechanism in the area was determined by Geodetector.[Results]① The ecological environmental quality of Shenmu City deteriorated over time,with the decline in RSEI reaching 12.47％,decreasing the fastest from 2010 to 2015.The area with poor ecological environmental quality in Shenmu City increased by 15.29％.② The ecological environmental quality in Shenmu City deteriorated first in the sandy area in the northwest(enhanced by wind),and then shifted to the southeast and northeast where the elevation was lower.Meanwhile,the dominant ecological environmental quality in Shenmu City was categorized as poor and fair.The area of those two categories occupied 67.09％of the total area of Shenmu City.③ The four indicator factors of vegetation cover and greenness,humidity,dryness,and heat were identified as significant drivers of ecological environmental quality in Shenmu City.Vegetation cover was the main driver of ecological environmental quality,accounting for 62.40％of the variation in ecological environmental quality.The multi-factor interactions also all indicated synergistic enhancement,and the interaction between night light,population density,heat,and vegetation coverage was the strongest.[Conclusion]The overall ecological environmental quality in Shenmu City has been deteriorating over time.Although the previous degradation has been contained,the area of deteriorating ecological environmental quality is gradually expanding.Increasing vegetation cover can effectively enhance the ecological environmental quality in Shenmu City.Therefore,ecological protection measures such as vegetation greening should be further implemented to improve the ecological environmental quality in Shenmu City.关键词
神木市/生态环境质量/遥感生态指数/时空格局/地理探测器Key words
Shenmu City/ecological environmental quality/remote sensing ecological index/spatio-temporal pattern/Geodetector分类
天文与地球科学引用本文复制引用
孙维婕,何璐,于强,苗禹琳,赵际剀,刘维..2010-2020年陕西省神木市生态环境质量时空演变及其驱动因素[J].水土保持通报,2024,44(1):284-292,9.基金项目
国家自然科学基金项目"基于生态安全格局的荒漠绿洲区生态保护红线划定方法研究"(42071237) （42071237）
