洞庭湖流域陆地水储量变化及其影响因素分析  

Analysis of Terrestrial Water Storage Changes and Influencing Factors in the Dongting Lake Basin

作　　者：湛紫微 刘娜 韦佳文 彭德静 Zhan Ziwei;Liu Na;Wei Jiaweng;Peng Dejing(College of Geography and Tourism,Hengyang Normal University,Hengyang 421002,Hunan,China)

机构地区：[1]衡阳师范学院地理与旅游学院,湖南衡阳421002

出　　处：《绿色科技》2025年第5期207-211,216,共6页Journal of Green Science and Technology

摘　　要：洞庭湖流域是著名的“鱼米之乡”,其农业的发展对地下水资源的依赖程度很高。了解洞庭湖流域的陆地水储量变化及其影响因素对流域内可持续发展具有重要意义。基于GRACE卫星产品分析了洞庭湖流域陆地水储量的时空变化特征和驱动因子。结果表明:(1)时间上,2003-2020年洞庭湖流域水储量整体呈上升趋势。(2)空间上,洞庭湖流域陆地水储量变化大致呈自东北向西南减少的趋势,四季水储量在空间分布具有明显差异。其中,流域内夏季的水储量全部盈余。(3)降水是影响流域水储量变化的主要因素,两者表现为显著正相关,并具有明显的季节性变化规律。流域水储量变化与气温变化呈负相关,温度升高时,水储量减少。流域水储量变化与增强型植被指数(EVI)之间也存在较强的正相关。Dongting Lake Basin is a famous"land of fish and rice",and its agricultural development is highly dependent on groundwater resources.It is of great significance to understand the changes of land water reserves in Dongting Lake Basin and its influencing factors for the sustainable development of the basin.The results show that:①temporally,from 2003 to 2020,the water reserves of Dongting Lake Basin showed a rising trend;②spatially,the variation of land water reserves in Dongting Lake Basin generally decreased from northeast to southwest,and the spatial distribution of water reserves in four seasons was significantly different.Among them,the summer water reserves in the basin are all surplus;③precipitation is the main factor affecting the change of water storage in the basin,and the two are significantly positively correlated with obvious seasonal changes.There is a negative correlation between the change of water storage and the change of air temperature.When the temperature rises,the water storage decreases.There is also a strong positive correlation between water storage change and enhanced vegetation index(EVI).

关 键 词：重力恢复与气候实验 陆地水储量变化 洞庭湖流域 时空变化 驱动力 

分 类 号：P333[天文地球—水文科学]