%0 Journal Article %A AN Linli %A HUANG Jianping %A REN Yu %A ZHANG Guolong %T Characteristic and cause analysis of terrestrial water storage change in drylands of northern China %D 2022 %R 10.11755/j.issn.1006-7639(2022)-02-0169 %J Journal of Arid Meteorology %P 169-178 %V 40 %N 2 %X

Based on GRACE (Gravity Recovery and Climate Experiment) satellite products, the TWS changes were calculated in drylands of northern China during the past two decades. And on this basis, the characteristics and causes of TWS changes were explored by using multi-source observations and model simulations. The results show that TWS in drylands of northern China decreased with a rate of 17.80±1.72 Gt per year during 2002-2020, which was also accompanied by various degrees of reduction in groundwater, root zone soil moisture and surface soil moisture. In drylands of northern China, the effects, such as climate warming and human water consumption, caused a substantial increase of evapotranspiration. The negative contributions of evapotranspiration overpassed the concurrently positive contributions of precipitation, and thus led to the decrease in TWS and increase in regional water stress.

%U http://www.ghqx.org.cn/EN/10.11755/j.issn.1006-7639(2022)-02-0169