Author(s): Bojun Liu; Linqi You; Yawei Zhao
Linked Author(s): Bojun Liu
Keywords: Water level evolution climatic change response semi-arid area Lake Daihai
Abstract: Lakes, as an important type of water bodies, play indispensable roles in water regulation and storage, water ecological environmental protection and regional climate regulation. Many countries in the world are still faced with severe challenges of environmental sustainability in lake management, water resources use, and eco-environmental protection. Especially for semi-arid lakes, they are vulnerable to climate change. The Lake Daihai in the typical semi-arid area, is selected as an example. The Mann-Kendall Test, Hurst Coefficient Method and T-Test based on Ordered Clustering Method were used to analyze the evolution trend of water level in the lake, and the Partial Mantel Test was employed to study the response of lake level to climate factors. The results show that: A significant downward trend from 1959 to 2018 is displayed in water level of Lake Daihai, and the abrupt changes occurred in 1982 and 2005, respectively; It is predicted that the water level will continue to decrease in the future. Under the condition of climate change, the water level of Daihai Lake is the most sensitive to temperature, and the second is sunshine. Due to the complex mechanism of precipitation, runoff and infiltration in the Daihai Lake Basin, the water level of Daihai Lake responds with a lag to precipitation change.
Year: 2025