Numerical Simulation of Effect of Sand Thickness on Soil Evaporation

doi:10.46488/NEPT.2021.V20I01.047

	Numerical Simulation of Effect of Sand Thickness on Soil Evaporation
	Zhao, Wenju1 ; Hu, Junhong 1; Li, Zongli 2; Yu, Ping 1; Zhou, Changquan 1
	2021-03-01
发表期刊	Nature Environment and Pollution Technology
ISSN	0972-6268
卷号	20 期号:1 页码:397-403
摘要	Evaporation from the soil is an important component of evapotranspiration, and mulching greatly affects soil evaporation. We conducted numerical simulations to study the effect of the thickness of sand mulch on soil evaporation. We tested nine treatments: Mulching with sand thicknesses of 1, 3, 5, 6, 8, 10, 15 and 20 cm plus an unmulched control (CK). Accumulated evaporation was significantly lower, and the resistance to evaporation was significantly higher, for the mulched treatments than CK. The volumetric soil water content (SWC) was significantly higher for the mulched treatments than CK, but SWC varied little for thicknesses >5 cm. Heating was slower and more uniform for the mulched treatments than for CK. With the increase of the thickness of sand, the temperature transmission was slowed down. The change of soil temperature was not obvious at thicknesses >15 cm. A thickness of 5 cm was the most effective for storing water and preserving heat. Our results provide a theoretical basis and technical guidance for the effective use and management of soil water in farmland in arid regions. © 2021 Technoscience Publications. All rights reserved.
关键词	Evaporation Numerical models Sand Soil moisture Soil evaporations Soil temperature Soil water Soil water content Technical guidances
DOI	10.46488/NEPT.2021.V20I01.047
收录类别	EI
语种	英语
出版者	Technoscience Publications
EI入藏号	20211310150389
EI主题词	Evapotranspiration
EI分类号	483.1 Soils and Soil Mechanics ; 802.3 Chemical Operations ; 921 Mathematics
引用统计	无
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/148398
专题	能源与动力工程学院
作者单位	1.College of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.General Institute for Water Resources and Hydropower Planning and Design, Ministry of Water Resources, Beijing; 100120, China
第一作者单位	能源与动力工程学院
第一作者的第一单位	能源与动力工程学院
推荐引用方式 GB/T 7714	Zhao, Wenju,Hu, Junhong,Li, Zongli,et al. Numerical Simulation of Effect of Sand Thickness on Soil Evaporation[J]. Nature Environment and Pollution Technology,2021,20(1):397-403.
APA	Zhao, Wenju,Hu, Junhong,Li, Zongli,Yu, Ping,&Zhou, Changquan.(2021).Numerical Simulation of Effect of Sand Thickness on Soil Evaporation.Nature Environment and Pollution Technology,20(1),397-403.
MLA	Zhao, Wenju,et al."Numerical Simulation of Effect of Sand Thickness on Soil Evaporation".Nature Environment and Pollution Technology 20.1(2021):397-403.