干旱区生态环境知识资源中心(Arid): Comparing phreatic evaporation at zero water table depth with water surface evaporation

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	Comparing phreatic evaporation at zero water table depth with water surface evaporation
	Hu Shunjun; Gan Yongde; Chen Yongbao
来源期刊	Journal of Arid Land
ISSN	1674-6767
出版年	2018
卷号	10 期号:6 页码:968-976
英文摘要	Salt-affected soils are mostly found in irrigated areas within arid and semi-arid regions where the groundwater table is shallow. Soils of this type have become an increasingly severe problem because they threaten both the environment and the sustainable development of irrigated agriculture. A tool to estimate phreatic evaporation is therefore urgently required to minimize the salinization potential of salt-affected areas. In this context, phreatic evaporation at zero water table depth (E0) is a key parameter for establishing a model for calculating phreatic evaporation. The aim of this study was to explore the law of phreatic evaporation and to develop structurally rational empirical models for calculating phreatic evaporation, based on E0 data of six types of soil (i.e., gravel, fine sand, sandy loam, light loam, medium loam, and heavy loam) observed using the non-weighing lysimeter and water surface evaporation (E601) data observed using a E601 evaporator of same evaporation area with a lysimeter-tube at the groundwater balance station of the Weigan River Management Office in Xinjiang Uygur Autonomous Region, China, during the non-freezing period (April to October) between 1990 and 1994. The relationship between E0 and E601 was analyzed, the relationship between the ratio of E0 to E601 and the mechanical compositions of different soils was presented, and the factors influencing E0 were discussed. The results of this study reveal that E0 is not equal to E601. In fact, only values of the former for fine sand are close to those of the latter. Data also show that E0 values are related to soil texture as well as to potential atmospheric evaporation, the ratio of E0 to E601 and the silt-clay particle content (grain diameter less than 0.02 mm) is negatively exponentially correlated, and that soil thermal capacity plays a key role in phreatic evaporation at E0. The results of this analysis therefore imply that the treatment of zero phreatic depth is an essential requirement when constructing groundwater balance stations to study the law of phreatic evaporation.
英文关键词	phreatic evaporation water table depth water surface evaporation soil texture soil thermal capacity
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	CSCD
WOS研究方向	Geology
CSCD记录号	CSCD:6384012
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/336042
作者单位	Hu Shunjun, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, State Key Laboratory of Desert and Oasis Ecology, Urumqi, Xinjiang 830011, China.; Gan Yongde, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences;;China Institute of Water Resources and Hydropower Research, State Key Laboratory of Desert and Oasis Ecology;;State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, Urumqi;;, ;;Beijing 830011;;100038.; Chen Yongbao, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences;;Central South Institute of Metallurgical Geology, State Key Laboratory of Desert and Oasis Ecology;;, Urumqi;;Yichang, ;; 830011;;443003.
推荐引用方式 GB/T 7714	Hu Shunjun,Gan Yongde,Chen Yongbao. Comparing phreatic evaporation at zero water table depth with water surface evaporation[J],2018,10(6):968-976.
APA	Hu Shunjun,Gan Yongde,&Chen Yongbao.(2018).Comparing phreatic evaporation at zero water table depth with water surface evaporation.Journal of Arid Land,10(6),968-976.
MLA	Hu Shunjun,et al."Comparing phreatic evaporation at zero water table depth with water surface evaporation".Journal of Arid Land 10.6(2018):968-976.