关键词: 水资源评价, 协调分析, 协调程度, 协调系数, 汉中盆地

Abstract: regional water resources system is structured by three parts: nature, society and the relationship of water supply and demand between nature and human society. Similarly, surplus or shortage of regional water resources depends on following three factors corresponding to the three parts: water supply and demand, and the coordination degree between water supply and demand. Clearly, the appraisal system of regional water resources should reflect the three factors impartially. However, in the existing appraisal system, the two factors, water supply and demand, are attached with great improtance, while the third factor, the coordination degree between water supply and demand, is neglected at all. It inevitably intensifies the contradiction between water supply and demand, aggravates the problem of water shortage. In order to get an objective reflection of coordination degree between water supply and demand in the appraisal system of regional water resources, in this paper, a new concept, Coordination Coefficient (C₀), is put forward. Its calculation method is introduced, and a case study is also carried out. C ₀ is an indispensable complement for the existing appraisal system of regional water resources. Additionally, its introduction is certainly favorable to the further development of water resources research.

Key words: water resources appraisal, coordination analysis, coordination degree, coordination coefficient, Hanzhong Basin