Arid Zone Research ›› 2021, Vol. 38 ›› Issue (6): 1570-1578.doi: 10.13866/j.azr.2021.06.09

• Water Resources and Utilization • Previous Articles     Next Articles

Evaluation and combination analysis of runoff in Hotan River, Xinjiang

HUANG Xing1(),CHEN Fulong1(),ZHAO Qi2,HE Chaofei1,LONG Aihua1,3   

  1. 1. College of Water Conservancy & Architectural Engineering, Shihezi University, Shihezi 832000, Xinjiang, China
    2. Hydrology Bureau of Xinjiang Uygur Autonomous Region, Urumqi 830000, Xinjiang, China
    3. State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, China
  • Received:2020-12-21 Revised:2021-08-03 Online:2021-11-15 Published:2021-11-29
  • Contact: Fulong CHEN E-mail:22091364@qq.com;cfl103@shzu.edu.cn

Abstract:

Studies on the different contributions of the runoff of the Hotan River in different time periods and synchronous-asynchronous encounter probability can provide a reference for the balance of industrial water, potable water, and water ecological environment and the improvement of water resource utilization efficiency in the Hotan River Basin. Mean standard deviation and fuzzy set pair analysis methods are applied to evaluate the runoff wetness-dryness of the Yulong Kashi River and the Karakashi River. The possibility of inter-runoff water transfer and synchronous-asynchronous encounter probability is analyzed on the basis of fuzzy set pair method and copula function. The fuzzy set pair method reveals that the Yulong Kashi River had 10 and 26 wet and dry years, respectively. By comparison, the mean standard deviation method shows that the Yulong Kashi River had 15 and 20 wet and dry years, respectively. The Karakash River had 9 wet years. Furthermore, 18 and 26 times in dry years were observed. In the fuzzy set pair method, the contribution of annual runoff and the influence of time history distribution are considered. Thus, evaluation results are more objective, and the difference in the probability of abundance and dryness obtained by the statistical method and the copula function is the same as the data scale is related to the way of dividing the abundance and dryness. The results of the two methods demonstrate that the probability of asynchronous abundance and dryness is greater than that of synchronous abundance and dryness, and the two tributaries have good complementarity. They can more clearly describe the high and low runoff status and the characteristics of high and low runoff in the Hotan River. They can also provide a basis for making decisions on water resource dispatch in the Hotan River Basin.

Key words: fuzzy set pair method, Copula function, mean standard deviation method, synchronous-asynchronous combined, Hotan River, Xinjiang