丹东市水资源时空分布研究

Study on temporal and spatial distribution of water resources in Dandong City

水资源是环境承载力的基础,也是区域可持续发展的限制因素之一。本文利用丹东市1955—2016年水文相关资料,采用线性回归、小波分析方法解析水资源量时间变化规律,通过GIS空间插值方法描述其空间分布特征。结果表明:近年来,丹东市降水量、地下水资源量与水资源总量均呈现减少的趋势,倾向斜率分别为-3.762mm/a、-0.276亿m^3/a、-0.098亿m^3/a,但并不显著(P>0.05);该市水资源空间分布不均衡,降水量呈由南向北增加分布,径流深度呈由北向南增加。

Water resources are the foundation of environmental carrying capacity and one of the limiting factors for regional sustainable development.Based on the hydrological data of Dandong City from 1955 to 2016,this paper uses linear regression and wavelet analysis to analyze the temporal variation of water resources,and uses GIS spatial interpolation method to describe its spatial distribution characteristics.The results show that in recent years,the precipitation,groundwater resources and total water resources in Dandong City all show a decreasing trend,with a slope of-3.762mm/a,-27.6 million m 3/a,-09.8 million m 3/a,but not significant(P>0.05).The spatial distribution of water resources in the city is unbalanced,with precipitation increasing from south to north and runoff depth increasing from north to south.