水资源量的概念分析与并行计算——以贵阳市城区为例

A Concept Analysis and Parallel Calculation of Water Resources for Guiyang City

针对水资源核算方法的复杂性,结合城镇用水需求设计取水量、流域多年平均径流量等指标,笔者分析了水资源量概念的内在逻辑关系,并提出采用并行算法核算水资源量的观点。把贵阳城区作为水资源的需求主体,其取水半径在继续向外延伸;目前城区的用水需求量已达到5.8 m3.s-1,约占所在南明河径流量(12 m3.s-1)及猫跳河上游径流量(30 m3.s-1)的1/7。依据可供对比的城区用水需求量、流域产汇流量的并行计算结果,能够直观地反映贵阳城区水资源量相对短缺程度的基本概况。

Due to the complex of calculation methods about water resources, the authors analyzed the logical concept of water resource quantity, and put forward a new viewpoint on parallel calculation method based on main indexes, including water demand design and average runoff of drainage basin in the present work. Taking as a main body of water resource demand, Guiyang city, a provincial city zone in the southwest of China, gradually spreads its waterfetching radius to farther water area. The water demand of Guiyang is approximately 5.8 m^3·s^-1, which is nearly 1/7 of the water flux from the updreams of Maotiaohe river （30 m^3·s^-1） and Nanming river （ 12 m^3·s^-1）. Contradistinctive method of parallel arithmetic with water demand and drainage runoff, therefore, may reflect the severe situation of water resource.