干旱区生态环境知识资源中心(Arid): Understanding the Role of Shallow Groundwater in Improving Field Water Productivity in Arid Areas

Arid

DOI	10.3390/w12123519
	Understanding the Role of Shallow Groundwater in Improving Field Water Productivity in Arid Areas
	Gao, Xiaoyu; Qu, Zhongyi; Huo, Zailin; Tang, Pengcheng; Qiao, Shuaishuai
通讯作者	Qu, ZY (corresponding author), Inner Mongolia Agr Univ, Water Conservancy & Civil Engn Coll, Hohhot 010018, Peoples R China.
来源期刊	WATER
EISSN	2073-4441
出版年	2020
卷号	12 期号:12
英文摘要	Soil water and salt transport in soil profiles and capillary rise from shallow groundwater are significant seasonal responses that help determine irrigation schedules and agricultural development in arid areas. In this study the Agricultural Water Productivity Model for Shallow Groundwater (AWPM-SG) was modified by adding a soil salinity simulation to precisely describe the soil water and salt cycle, calculating capillary fluxes from shallow groundwater using readily available data, and simulating the effect of soil salinity on crop growth. The model combines an analytical solution of upward flux from groundwater using the Environmental Policy Integrated Climate (EPIC) crop growth model. The modified AWPM-SG was calibrated and validated with a maize field experiment run in 2016 in which predicted soil moisture, soil salinity, groundwater depth, and leaf area index were in agreement with the observations. To investigate the response of the model, various scenarios with varying groundwater depth and groundwater salinity were run. The inhibition of groundwater salinity on crop yield was slightly less than that on crop water use, while the water consumption of maize with a groundwater depth of 1 m is 3% less than that of 2 m, and the yield of maize with groundwater depth of 1 m is only 1% less than that of 2 m, under the groundwater salinity of 2.0 g/L. At the same groundwater depth, the higher the salinity, the greater the corn water productivity, and the smaller the corn irrigation water productivity. Consequently, using modified AWPM-SG in irrigation scheduling will be beneficial to save more water in areas with shallow groundwater.
英文关键词	modified AWPM-SG shallow groundwater soil water and salt balance crop growth water productivity maize
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000602962500001
WOS关键词	DEFICIT IRRIGATION ; TABLE ; MODEL ; RECHARGE ; WHEAT ; REQUIREMENTS ; SIMULATION ; SALINITY ; BALANCE ; FLUXES
WOS类目	Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
来源机构	中国农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/349222
作者单位	[Gao, Xiaoyu; Qu, Zhongyi; Qiao, Shuaishuai] Inner Mongolia Agr Univ, Water Conservancy & Civil Engn Coll, Hohhot 010018, Peoples R China; [Gao, Xiaoyu; Huo, Zailin] China Agr Univ, Ctr Agr Water Res China, Beijing 100083, Peoples R China; [Tang, Pengcheng] China Inst Water Resources & Hydropower Res, Inst Water Resources Pastoral Area, Hohhot 010020, Peoples R China
推荐引用方式 GB/T 7714	Gao, Xiaoyu,Qu, Zhongyi,Huo, Zailin,et al. Understanding the Role of Shallow Groundwater in Improving Field Water Productivity in Arid Areas[J]. 中国农业大学,2020,12(12).
APA	Gao, Xiaoyu,Qu, Zhongyi,Huo, Zailin,Tang, Pengcheng,&Qiao, Shuaishuai.(2020).Understanding the Role of Shallow Groundwater in Improving Field Water Productivity in Arid Areas.WATER,12(12).
MLA	Gao, Xiaoyu,et al."Understanding the Role of Shallow Groundwater in Improving Field Water Productivity in Arid Areas".WATER 12.12(2020).