生态学报2025，Vol.45Issue(24)：12324-12336,13.DOI:10.20103/j.stxb.202503060487
基于InVEST模型的黄河流域水源涵养时空演变及其影响因素
Spatiotemporal evolution and driving factors of water conservation in the Yellow River Basin using the InVEST Model
摘要
Abstract
As a vital national ecological security barrier,the Yellow River Basin's water conservation function demonstrated significant spatiotemporal evolution patterns.Analyzing these patterns provided crucial theoretical and practical insights for understanding regional variations in water retention capacity,rationally allocation ecological restoration resources,and maintaining both ecosystem health and sustainable water utilization across the basin.However,existing studies primarily focused on single-year or short-term analyses,lacking long-term annual sequential examinations.This limitation hindered a comprehensive revelation of the dynamic characteristics of water conservation functions and their driving mechanisms.To address this scientific gap,this study utilized multi-source data(land use,soil characteristics,topography,and saturated hydraulic conductivity)from 2000 to 2023 in the Yellow River Basin.We applied the InVEST model's water yield module with a water conservation correction formula to construct an annual water conservation dataset.The analysis systematically revealed interannual dynamics and spatial heterogeneity of water conservation across the basin,while employing geographic detectors and Pearson correlation coefficients to identify driving factors and their spatial variation patterns.The research results showed that:(1)The spatial distribution of water conservation in the Yellow River Basin exhibited significant spatial heterogeneity,characterized by low values in the northwest and high values in the southwest,southeast,and central-eastern regions of the basin.At the sub-basin scale,this pattern remained consistent,with the greatest water conservation depth observed in the sub-basin from Hekou Town to Longmen,while the lowest values were found in the sub-basin extending from Lanzhou to Hekou Town.(2)Over the study period,the depth of water conservation in the Yellow River Basin showed a statistically non-significant upward trend at a rate of 0.15 mm per year,reflecting an overall pattern of slight growth.Interannual fluctuations in water conservation depth were considerable and exhibited marked variability throughout the study period.In 2003,the water conservation depth reached its peak,measuring 25.04 mm.At the sub-basin scale,with the exception of the Sanmenxia to Huayuankou sub-basin,which exhibited a decreasing trend,the other seven sub-basins exhibited varying degrees of increase.(3)The factor analysis revealed that annual precipitation was the primary driver of interannual water conservation variations in the Yellow River Basin,followed by vegetation coverage.Slope had the weakest influence on water conservation among all analysed factors.Among dual-factor interactions,the combination of annual precipitation and elevation demonstrated the highest explanatory power.These findings provided a robust scientific basis for ecological conservation and water resource management in the Yellow River Basin.关键词
黄河流域/InVEST模型/水源涵养/影响因素Key words
The Yellow River Basin/InVEST model/water conservation/influencing factors引用本文复制引用
ZHANG Xiuxia,WANG Zhongyang,DU Heng,LI Wangping,WU Xiaodong,WEI Wenbo,WANG Niu,WAN Rongqi,BIAN Yanjun,DOU Aixia..基于InVEST模型的黄河流域水源涵养时空演变及其影响因素[J].生态学报,2025,45(24):12324-12336,13.基金项目
国家自然科学基金项目(U23A2062) （U23A2062）
国家重点研发计划项目(2023YFC3206300) （2023YFC3206300）
甘肃省自然科学基金(24JRRA176) （24JRRA176）
甘肃省科技专员专项(24CXGA063) （24CXGA063）
