Spatial and temporal changes and its driving factors of ecological environment quality in Weihe River basin from 2000 to 2020

She Huan; Li Peng; Wang Xiaokang; Xiao Lie; Wang Zhou; Yang Xiuling; Ning Jing; Zhang Zeyu

doi:10.13961/j.cnki.stbctb.2025.01.033

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Spatial and temporal changes and its driving factors of ecological environment quality in Weihe River basin from 2000 to 2020

- Spatial and temporal changes and its driving factors of ecological environment quality in Weihe River basin from 2000 to 2020
- Bulletin of Soiland Water Conservation Vol. 45, Issue 1, Pages: 317-326(2025)
- 作者机构：
  
  1. 西安理工大学西北旱区生态水利国家重点实验室,陕西,西安,710048
  2. 旱区生态水文与灾害防治国家林业和草原局重点实验室,陕西,西安,710048
  3. 国家林业和草原局西北林业调查规划院,陕西,西安,710001
  4. 青海省林业和草原局,青海,西宁,810008
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2025.01.033
  CLC： S157.1
- Published：2025
- 稿件说明：
移动端阅览
She Huan, Li Peng, Wang Xiaokang, et al. Spatial and temporal changes and its driving factors of ecological environment quality in Weihe River basin from 2000 to 2020[J]. Bulletin of Soiland Water Conservation, 2025, 45(1): 317-326.
DOI：

She Huan, Li Peng, Wang Xiaokang, et al. Spatial and temporal changes and its driving factors of ecological environment quality in Weihe River basin from 2000 to 2020[J]. Bulletin of Soiland Water Conservation, 2025, 45(1): 317-326. DOI： 10.13961/j.cnki.stbctb.2025.01.033.

摘要

[目的

]

分析2000—2020年渭河流域生态环境质量时空特征及其驱动因素，为该流域实现可持续发展和生态文明建设提供理论参考。[方法

]

基于GEE平台构建遥感生态指数(RSEI)从而动态评估2000—2020年渭河流域生态环境质量的变化，并基于最优参数地理探测器模型探究气候、植被、地形、土壤和社会经济因子对于生态环境质量的影响。[结果

]

①2000—2020年渭河流域生态环境质量不断提升，区域内生态环境质量差异性加大；生态环境质量等级以差和较差为主，占总面积的60%以上。20 a间生态环境质量等级面积增加较多的为中、良和优。②生态环境质量等级呈“南高北低，东高西低”的空间分布格局，较差等级生态环境区面积最大，渭河流域73.43%的区域处于生态环境质量增加区，增加区面积达1.21×10

；研究期间生态环境质量增加的区域面积不断增大，减少的区域面积不断减少，研究区整体生态环境质量在往好的方向发展。优生态环境质量区域总体仍沿东南—西北方向倾斜分布。[结论

]

降雨量、高程、土壤有机碳含量是影响渭河流域生态环境质量的主要影响因素；在进行渭河流域生态环境质量提升的过程中，应充分考虑坡度的分布规律优化治理方案。

Abstract

[Objective] The spatial and temporal characteristics of ecological environment quality and its driving factors in the Weihe River basin from 2000 to 2020 was analyzed in order to provide theoretical reference for the sustainable development and ecological civilization construction in the basin. [Methods] The remote sensing ecological index (RSEI) was built based on Google Earth Engine platform to dynamically evaluate the change of ecological environment quality in the Weihe River basin from 2000 to 2020 and the impact of climate

vegetation

terrain

soil and social-economic factors on ecological environment quality was explored based on the optimal parameter geographic detector model. [Results] ① From 2000 to 2020

the quality of the Weihe River basin ecological environment continuously improved and the difference in ecological environment quality within the region increased. The ecological environment quality grade was mainly poor and relatively poor

accounting for more than 60% of the total area. In 20 years

the area of ecological environment quality grade increased for medium

good

and excellent. ② The quality grade of the ecological environment had a spatial distribution pattern of “higher in the south and lower in the north

higher and lower in the east and the west”. The area of poor grade ecological environment was the largest

and 73.43% of the Weihe River basin was in the area of ecological environment quality increase

with an increase area of 1.21×105 km2. During the study period

the area where the ecological environment quality increases was increasing and the reduced area was decreasing

and the overall ecological environment quality of the research area was positively developing. The area with excellent ecological environment quality distributed along the southeast-northwest direction. [Conclusion] Rainfall

elevation

and soil organic carbon content were the main factors affecting the ecological environment quality of the Weihe River Basin. In the process of improving the ecological environment quality of the Weihe River Basin

the distribution law of slope should be fully considered to optimize the governance scheme.

关键词

Keywords

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