Study on the change of water resources characteristics of Xingkai Lake based on satellite remote sensing
With the intensification of global climate change and human activities,the dynamic change of lake water resources has become a key research topic in the field of ecology.As an indispensable part of the earth's ter-restrial ecosystem,the changes in the hydrological characteristics of lakes directly affect the regional water cycle,ecological balance and human well-being.The study of lake dynamics can provide a reference for the influence mechanism of climate system and human activities.The purpose of this paper is to analyze the dynamic changes of water resources of the Xingkai Lake through multi-source satellite remote sensing data such as ICEsat-1/2,Land-sat and GRACE,and to explore the impact of climate change and human activities on the lake by combining meteor-ological data and land use data.The results show that:(1)The water level of Xingkai Lake monitored by ICEsat-1 presents periodic fluctuations from 2003 to 2009,and the interannual water level has an upward trend;The intera-nnual water level of the Xingkai Lake monitored by ICEsat-2 presents a downward trend from 2018 to 2022,and the multi-track data has a consistent trend in the water profile.(2)From 2003 to 2021,the area of the Xingkai Lake mainly increases,and the increase in the east and south is the most obvious.(3)The changes of water stor-age in the Xingkai Lake inverted by GRACE present an upward trend,and the biggest seasonal changes is in spring,followed by winter,summer and autumn.There is a high correlation between the change characteristics of lake water and precipitation.The results of this study can provide a theoretical basis for the comprehensive utiliza-tion of water resources and the formulation of ecological and environmental protection measures in the basin.
万方数据
维普
