气候变化领域集成服务门户(CCPortal): Snow as an Important Natural Reservoir for Runoff and Soil Moisture in Northeast China

CCPortal

DOI	10.1029/2020JD033086
	Snow as an Important Natural Reservoir for Runoff and Soil Moisture in Northeast China
	Qi W.; Feng L.; Liu J.; Yang H.
发表日期	2020
ISSN	2169897X
卷号	125 期号:22
英文摘要	As one of the major agricultural regions in the world, water scarcity problems in Northeast China have drawn much attention recently. Because of cold and long winter period, snow is an important component in the hydrological system. Yet few studies have been conducted to systematically assess its role. This study quantified the effects of snow on runoff and soil moisture in the entire region in a 30-year time period (1982–2011) for the first time. A water and energy budget-based distributed biosphere hydrological model with improved snow physics after calibration and validation is employed. A Standardized Snow depth Index (SSdI) is also proposed to quantify snow variations. Result shows that snow contributes 11% to runoff annually on average and 66% and 33% in April and May (main months for crop planting). Soil moisture could decrease by at least 20% in March–May if there would be no snow, and the major agriculture area suffers more than other regions. We also found that SSdI is indicative of standardized soil moisture index and standardized runoff index in spring, particularly useful for supporting water management in agriculture. These results indicate that snow performs like an important reservoir: redistribute water resources among months. This study provides unique insights into the importance of snow in the entire region. The results improve the awareness of the importance of snow to water resources management and indicate that it is worth paying attention to snow in water resources management in this region. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Liao River; Northeast China; reservoir; snow; Songhua River; water resources
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185630
作者单位	School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, China; Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, Shenzhen, China; State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, Shenzhen, China; Eawag, Swiss Federal Institute of Aquatic Science and Technology, Duebendorf, Switzerland; Department of Environmental Science, MGU, University of Basel, Basel, Switzerland
推荐引用方式 GB/T 7714	Qi W.,Feng L.,Liu J.,et al. Snow as an Important Natural Reservoir for Runoff and Soil Moisture in Northeast China[J],2020,125(22).
APA	Qi W.,Feng L.,Liu J.,&Yang H..(2020).Snow as an Important Natural Reservoir for Runoff and Soil Moisture in Northeast China.Journal of Geophysical Research: Atmospheres,125(22).
MLA	Qi W.,et al."Snow as an Important Natural Reservoir for Runoff and Soil Moisture in Northeast China".Journal of Geophysical Research: Atmospheres 125.22(2020).