辽河流域水资源可达性评价  

Assessment of Water Resources Accessibility in the Liaohe River Basin

作　　者：李治军[1,2] 庞博文 郝永刚 LI Zhi-jun;PANG Bo-wen;HAO Yong-gang(School of Water Resources and Hydropower Engineering,Heilongjiang University,Harbin 150080,China;Institute of Groundwater Research in Cold Regions,Heilongjiang University,Harbin 150050,China)

机构地区：[1]黑龙江大学水利水电学院,哈尔滨150080 [2]黑龙江大学寒区地下水研究所,哈尔滨150050

出　　处：《长江科学院院报》2025年第2期29-35,共7页Journal of Changjiang River Scientific Research Institute

摘　　要：水资源可达性是评价区域取用水难易程度的重要标准,能够反映一个地区或流域水资源的空间差异,受气候、生态环境、经济发展等因素的影响,因此选取坡度、相对高差、径流深、水质分布、土地利用类型这5个空间因子指标并耦合最小累计阻力(MCR)模型对辽河流域网格尺度水资源可达性进行评价,并对水资源可达性与空间需水量进行耦合协调度分析。研究区水资源可达性指数处于0.164~1.0之间,自北向南逐渐递增;研究区水资源可达性与空间需水量的耦合协调度在0.352~0.916之间,以区县为基本单位,流域内耦合协调度轻度失调(0.3~0.4)、濒临失调(0.4~0.5)、勉强协调(0.5~0.6)的区域分别占0.56%、0.46%、0.74%,良好协调(0.8~0.9)和高度协调(0.9~1.0)的区域分别占30.8%和0.9%。Water accessibility is a crucial criterion for assessing the difficulty of accessing water resources in a region as it reflects the spatial difference of water resources within a specific region or basin.Water accessibility is influenced by climate,ecological environment,economic development,and other factors.In this study,we selected five spatial factor indicators—including slope gradient,relative height difference,runoff depth,water quality distribution,and land use type—and integrated them into the Minimum Cumulative Resistance(MCR)model to evaluate water resource accessibility on a grid scale in the Liaohe River Basin.Additionally,we analyzed the degree of coupling coordination between water resource accessibility and spatial water demand.Results reveal that the water resource accessibility index in the study area ranges from 0.164 to 1.0,exhibiting a gradual increase from north to south.The degree of coupling coordination between water resource accessibility and spatial water demand varies from 0.352 to 0.916,with districts and counties as the basic units.Within the basin,slightly uncoordinated areas(with a degree of coupling coordination at 0.3-0.4),nearly uncoordinated(0.4-0.5),and intermediately coordinated(0.5-0.6)account for 0.56%,0.46%,and 0.74%,respectively.In contrast,areas with excellent coordination(0.6-0.8)and high-quality coordination(0.8-1.0)represent 30.8%and 0.9%,respectively.

关 键 词：水资源可达性 耦合协调度 MCR模型 辽河流域 

分 类 号：X37[环境科学与工程—环境工程]