基于TOPSIS法的西部矿区水资源承载力综合评价

Evaluation on Water Resources Carrying Capacity in Western Mining Areas Based on TOPSIS Method

水资源短缺严重制约我国西部矿区煤炭资源的开发。基于我国西部矿区煤炭和水资源之间的供需现状,分别从水资源状况、生态环境以及社会经济3方面选取指标构建评价指标体系,通过熵权法计算指标权重,并采用改进的TOPSIS评价方法对矿区水资源承载力进行定量评价,为相关部门制定合理的水资源管控措施提供参考依据。为保证评价结果的准确性、客观性以及时效性,从权重计算到评价模型建立都充分利用了原始数据。利用该模型对西部某矿区近10a的水资源承载力进行评价,结果表明该矿区水资源承载力有所提升,从参与的评价指标来看,此现象得益于该矿区不断兴建水库。但是截止到2018年水资源承载力仍然处于临界超载状态,距离可载状态仍有较大差距,说明该矿区水资源短缺问题依然严峻,相关部门应该加大管理力度,合理调控以维持水资源供需平衡。

The shortage of water resources severely restricts the development of coal resource in the western mining areas of China.Based on the current status of supply and demand between coal and water resources in the western mining areas of China,water resource conditions,ecological environment and social economy were selected to form an evaluation index system.Through calculation of index weight by entropy weight method,the water resources carrying capacity was quantitatively evaluated by improved TOPSIS evaluation method.It provided a reference for relevant departments to develop reasonable water management and control measures.In order to ensure the accuracy,objectivity and timeliness of the evaluation results,the weight calculation and evaluation model establishment made full use of the original data.This model was used to evaluate the water resources carrying capacity of a mining area in the past 10 years.The results show that the water resources carrying capacity of the mining area has been improved.Judging from the participating evaluation indicators,this phenomenon is benefited from the continuous construction of reservoirs.However,by 2018 year,the water resources carrying capacity was still in a critical overload state,and there was still a big gap from the loadable state.It shows that the shortage of water resources in the mining area is still very serious.Relevant departments should strengthen management and rationally control to maintain the balance between supply and demand of water resources.