摘要
为掌握中国西南地区近一年内的水资源变化情况,采用GRACE-FO重力卫星数据及GLDAS水文模型数据研究了该区域内陆地水、地表水及地下水储量的时空变化,并结合降水数据进行了分析。结果表明:①陆地水和地表水均呈现出明显的季节性变化,其中在夏季及秋季呈现上升的趋势,而在春季和冬季呈现出下降的趋势;②西南地区的陆地水和地下水在2018年6月至2019年9月期间整体呈现出下降的趋势,二者的年变化趋势分别为(-1.87±0.82)cm/a和(-2.15±0.96)cm/a;③降水是陆地水和地表水季节性变化的主要原因,且是2019年云南干旱的主要原因。
In order to monitor the changes of water resources in Southwest China in the past year,the GRACE--FO gravity satellite data and GLDAS hydrological model data were used to study the spatial and temporal changes of land water,surface water and groundwater reserves in the region,in combination with precipitation data.The results indicate that①land water and surface water show obvious seasonal changes,which appear as upward trend in summer and autumn but downward trend in spring and winter;②the land water and groundwater in Southwest China declined from June 2018 to September 2019,and their annual trends are(-1.87±0.82)cm/a and(-2.15±0.96)cm/a,respectively;③precipitation is the main reason of seasonal change of land water and surface water,and also the main cause of Yunnan drought in 2019.
作者
易琳
王柯
钱金菊
王冠
洪丹仪
YI Lin;WANG Ke;QIAN Jin-ju;WANG Guan;HONG Dan-yi(Electric Power Research Institute of Guangdong Power Grid Corporation,Guangzhou 510062,China)
出处
《世界地质》
CAS
2020年第3期700-705,共6页
World Geology
基金
南方电网重点科技项目(GDKJXM20173016)。
