Spatial-temporal Evolution of Ecological Environmental Quality and Driving Factors in Shenmu City of Shaanxi Province from 2010 to 2020

Sun Weijie; He Lu; Yu Qiang; Miao Yulin; Zhao Jikai; Liu Wei

doi:10.13961/j.cnki.stbctb.2024.01.028

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Spatial-temporal Evolution of Ecological Environmental Quality and Driving Factors in Shenmu City of Shaanxi Province from 2010 to 2020

- Spatial-temporal Evolution of Ecological Environmental Quality and Driving Factors in Shenmu City of Shaanxi Province from 2010 to 2020
- Bulletin of Soiland Water Conservation Vol. 44, Issue 1, Pages: 284-292(2024)
- 作者机构：
  
  北京林业大学精准林业北京市重点实验室,北京,100083
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2024.01.028
  CLC： {P964};X821
- Published：2024
- 稿件说明：
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Sun Weijie, He Lu, Yu Qiang, et al. Spatial-temporal Evolution of Ecological Environmental Quality and Driving Factors in Shenmu City of Shaanxi Province from 2010 to 2020[J]. Bulletin of Soiland Water Conservation, 2024, 44(1): 284-292.
DOI：

Sun Weijie, He Lu, Yu Qiang, et al. Spatial-temporal Evolution of Ecological Environmental Quality and Driving Factors in Shenmu City of Shaanxi Province from 2010 to 2020[J]. Bulletin of Soiland Water Conservation, 2024, 44(1): 284-292. DOI： 10.13961/j.cnki.stbctb.2024.01.028.

摘要

[目的] 陕西省神木市是黄河流域生态保护建设的重要地区。分析该地区生态环境质量变化

为资源型城市神木市的生态环境治理、修复及绿色发展提供科学依据。[方法] 选取2010

2015与2020年共3期Landsat遥感影像

利用主成分分析方法构建遥感生态指数(RSEI)作为生态环境评价指标

分析神木市生态环境质量时空演变格局

并通过地理探测器探究该地区生态环境驱动机制。[结果] ①神木市生态环境质量持续恶化

RSEI指数下降幅度达到12.47 %

在2010-2015年间下降最快;神木市生态环境质量很差与较差的面积增加幅度达到15.29 %。②神木市生态环境质量恶化以西北部的风沙区率先增强

随后转向地势较低的东南部和东北部。同时

神木市生态环境质量以较差和一般为主

两者总和占据神木市总面积的67.09 %。③植被覆盖度与绿度、湿度、干度及热度4个指标因素均表现出显著的驱动性

其中植被覆盖度解释力最高(达到62.4 %)

是神木市生态环境质量的主要驱动力;多因子交互也均表示出协同增强的作用

夜间灯光、人口密度、热度与植被覆盖度交互作用最强。[结论] 神木市生态环境质量总体仍在进一步恶化

尽管前期退化得到遏制

但恶化区域在逐渐扩大

提高植被覆盖度可以有效增强神木市生态环境质量。为此应进一步落实植被绿化等生态保护措施

提升神木市高品质生态环境质量。

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

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