摘要
[目的]探讨辽宁省水源涵养量时空变化特征及其影响因素,为水资源合理开发利用及水源涵养功能恢复提供可视化评估依据。[方法]基于InVEST模型产水量模块,评估辽宁省2001—2020年水源涵养量时空动态变化状况,采用相关分析和地理探测器探索水源涵养的主要影响因素。[结果] 2001—2020年辽宁省年均水源涵养量总体呈波动上升趋势,多年平均值为95.28 mm,增长速率为13.35 mm/(10 a);水源涵养量呈由东向西递减的空间分布特征,丹东市、抚顺市和本溪市水源涵养量较高,盘锦市、锦州市、阜新市和葫芦岛市水源涵养量较低。[结论]水源涵养量与降水量、地表水资源量、山区入渗量和林地比例呈显著正相关,与蒸散量、气温、地块破碎度、建设用地比例呈显著负相关。气候因子及土地利用因子是影响辽宁省水源涵养量空间分异的主导因素,单因子解释力0.6以上,多因子交互作用强于单因子作用,其中降水、蒸散与各因子的交互作用解释力达0.92。
[Objective]The temporal and spatial variation characteristics and influencing factors of water conservation in Liaoning Province were explored in order to provide a visual evaluation basis for the rational development and utilization of water resources and the restoration of water conservation function.[Methods]The spatial and temporal dynamics of water conservation in Liaoning Province from 2001 to 2020 were evaluated based on the water production module of the InVEST model.The main influencing factors were explored by using correlation analysis and Geodetector.[Results]During 2001—2020,the average annual water conservation in Liaoning Province fluctuated and increased,with an annual average value of 95.28 mm and a growth rate of 13.35 mm/(10 yr).The spatial distribution of water conservation decreased from east to west.Water conservation in Dandong,Fushun,and Benxi City was higher,while water conservation in Panjin,Jinzhou,Fuxin,and Huludao City was lower.[Conclusion]Water conservation was positively correlated with precipitation,surface water resources,mountain infiltration,and forest proportion,and negatively correlated with evapotranspiration,temperature,fragmentation degree,and construction land proportion.Climate factors and land use factors were the dominant factors affecting the spatial differentiation of water conservation in Liaoning Province.The explanatory power of a single factor was above 0.6,and the interaction of multiple factors was stronger than that of a single factor,among which the explanatory power of the interaction between precipitation,evapotranspiration,and each factor was 0.92.
作者
吕乐婷
李青
杨勇
LüLeting;Li Qing;Yang Yong(School of Geography Science,Liaoning Normal University,Dalian,Liaoning 116029,China)
出处
《水土保持通报》
CSCD
北大核心
2022年第1期290-296,共7页
Bulletin of Soil and Water Conservation
基金
国家自然科学基金项目“流域景观格局对非点源污染影响的定量评估:以辽宁省汤河流域为例”(41701208)。
