气候变化领域集成服务门户(CCPortal): Rapid Urbanization and Agricultural Intensification Increase Regional Evaporative Water Consumption of the Loess Plateau

CCPortal

DOI	10.1029/2020JD033380
	Rapid Urbanization and Agricultural Intensification Increase Regional Evaporative Water Consumption of the Loess Plateau
	Liang W.; Zhang W.; Jin Z.; Yan J.; Yihe L.ü.; Li S.; Yu Q.
发表日期	2020
ISSN	2169897X
卷号	125 期号:23
英文摘要	Changing evapotranspiration (ET) will impact freshwater availability, knowledge of which is a critical prerequisite for policy development related to water resources management in an evolving climate, especially for water-limited regions. However, the socio-economic effects are not considered due to the lack of detailed information about this. Here we used a well-validated remote sensing model and multiple socio-economic factors to investigate the driving factors of ET changes over the Loess Plateau during 1982–2012. Results showed that the modeled annual ET significantly increased by ~2 mm yr−2 during this period (p < 0.001), caused by increased transpiration (2.16 mm yr−2) and interception (0.27 mm yr−2), which was partly offset by decreased soil evaporation (−0.47 mm yr−2). Meanwhile, although the average ET of the forest was larger (480.4 ± 14.8 mm yr−1), it was found that the change in total ET of the region was dominated by that in grassland and cropland (1.1 km3 yr−2, 90% altogether). Factorial simulations indicated that the intensifying ET over 79.4% and 9.1% of the study area can be explained by vegetation greening and climate change, respectively. Further analysis suggested that the vegetation greening and the increased ET were primarily associated with the rapid urbanization and agricultural intensification. Our findings highlight the potential unfavorable effects of socio-economic activities on water resources management on this coupled natural-human system that is already facing water scarcity issues. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	climate change; evapotranspiration; Loess Plateau; urbanization and agricultural intensification; vegetation greening
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/185621
作者单位	School of Geography and Tourism, Shaanxi Normal University, Xi'an, China; National Demonstration Center for Experimental Geography Education, Shaanxi Normal University, Xi'an, China; Xi'an Gu Bo Electronic Intelligent Technology Co., Ltd, Xi'an, China; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, China; State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China
推荐引用方式 GB/T 7714	Liang W.,Zhang W.,Jin Z.,et al. Rapid Urbanization and Agricultural Intensification Increase Regional Evaporative Water Consumption of the Loess Plateau[J],2020,125(23).
APA	Liang W..,Zhang W..,Jin Z..,Yan J..,Yihe L.ü..,...&Yu Q..(2020).Rapid Urbanization and Agricultural Intensification Increase Regional Evaporative Water Consumption of the Loess Plateau.Journal of Geophysical Research: Atmospheres,125(23).
MLA	Liang W.,et al."Rapid Urbanization and Agricultural Intensification Increase Regional Evaporative Water Consumption of the Loess Plateau".Journal of Geophysical Research: Atmospheres 125.23(2020).