基于地理探测器的洮河流域生态环境质量时空演变及驱动力分析

朱兴林; 司建华; 王军德; 雒天峰; 程玉菲; 周冬蒙; 杨杨; 伊丽娜

doi:10.13928/j.cnki.wrahe.2025.01.007

水利水电技术（中英文） ›› 2025, Vol. 56 ›› Issue (1) : 74 -84. DOI: 10.13928/j.cnki.wrahe.2025.01.007

生态水文机理与流域管理策略专栏

基于地理探测器的洮河流域生态环境质量时空演变及驱动力分析

朱兴林 ¹^,²^,³ ,
司建华 ¹^,² ,
王军德 ⁴ ,
雒天峰 ⁵ ,
程玉菲 ⁴ ,
周冬蒙 ¹^,²^,³ ,
杨杨 ⁶ ,
伊丽娜 ⁶

作者信息 +

Analysis of spatial and temporal evolution of ecological environment quality and driving force in Taohe River Basin

Xinglin ZHU ¹^,²^,³ ,
Jianhua SI ¹^,² ,
Junde WANG ⁴ ,
Tianfeng LUO ⁵ ,
Yufei CHENG ⁴ ,
Dongmeng ZHOU ¹^,²^,³ ,
Yang YANG ⁶ ,
Lina YI ⁶

Author information +

文章历史 +

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摘要

【目的】准确分析流域生态环境质量的时空演变及其驱动因素，可为流域的综合治理和高质量发展提供科学依据。【方法】以洮河流域为例，通过耦合绿度、湿度、热度和干度指数构建了流域生态环境质量评价的遥感生态指数(RSEI),并对1990—2020年洮河流域生态环境质量时空演变特征进行了分析。引入地理探测器和结构方程模型探索了流域生态环境质量对自然和人为因素直接和间接影响的响应。【结果】结果表明，研究区RSEI均值呈先降低后上升趋势；流域内生态环境质量等级由大面积的差和较差转化为大面积的中等和良好。气候和地形对RSEI分布有正向影响，城市化对RSEI分布有负向影响，土地利用类型对RSEI为先负向后正向。气候的正向影响逐渐减弱，城镇化的负向影响逐渐增强。【结论】洮河流域生态环境质量总体呈现逐渐改善的趋势，其空间格局的变化及相应的驱动因素分析结果可为流域综合治理提供相应的科学依据和实践指导。

Abstract

[Objective] The accurate analysis of the spatiotemporal evolution of watershed ecological environmental quality and its driving factors can provide scientific support for the comprehensive management and high-quality development of the watershed. [Methods] Using the Tao River Basin as an example, a Remote Sensing Ecological Index(RSEI) was constructed by coupling indices of greenness, humidity, temperature, and dryness to evaluate the ecological environmental quality of the basin. The spatiotemporal evolution characteristics of the ecological environmental quality in the Tao River Basin from 1990 to 2020 were then analyzed. On this basis, geographic detectors and structural equation models were introduced to explore the direct and indirect responses of the basin's ecological environmental quality to natural and human factors. [Results] The results show that the average RSEI in the study area first decreased and then increased over time. The ecological environmental quality levels in the watershed transitioned from large areas of poor and very poor to large areas of medium and good. Climate and terrain have a positive influence on the distribution of RSEI, while urbanization has a negative influence. The impact of land use types on RSEI first showed a negative and then positive relationship. The positive impact of climate gradually weakened, while the negative impact of urbanization gradually intensified. [Conclusion] The ecological environmental quality of the Tao River Basin has generally improved over time. The analysis of spatial pattern changes and driving factors can provide scientific support and practical guidance for comprehensive watershed management.