Arid
DOI10.1016/j.jhydrol.2016.03.064
A method for estimating maximum static rainfall retention in pebble mulches used for soil moisture conservation
Peng, Hongtao1,2,3,4; Lei, Tingwu1,2,4; Jiang, Zhiyun5; Horton, Robert6
通讯作者Lei, Tingwu
来源期刊JOURNAL OF HYDROLOGY
ISSN0022-1694
EISSN1879-2707
出版年2016
卷号537页码:346-355
英文摘要

Mulching of agricultural fields and gardens with pebbles has long been practiced to conserve soil moisture in some semi-arid regions with low precipitation. Rainfall interception by the pebble mulch itself is an important part of the computation of the water balance for the pebble mulched fields and gardens. The mean equivalent diameter (MED) was used to characterize the pebble size. The maximum static rainfall retention in pebble mulch is based on the water penetrating into the pores of pebbles, the water adhering to the outside surfaces of pebbles and the water held between pebbles of the mulch. Equations describing the water penetrating into the pores of pebbles and the water adhering to the outside surface of pebbles are constructed based on the physical properties of water and the pebble characteristics. The model for the water between pebbles of the mulch is based on the basic equation to calculate the water bridge volume and the basic coordination number model. A method to calculate the maximum static rainfall retention in the pebble mulch is presented. Laboratory rain simulation experiments were performed to test the model with measured data. Paired sample t-tests showed no significant differences between the values calculated with the method and the measured data. The model is ready for testing on field mulches. (C) 2016 Elsevier B.V. All rights reserved.


英文关键词Pebble mulch Rainfall interception Moisture content Model
类型Article
语种英语
国家Peoples R China ; USA
收录类别SCI-E
WOS记录号WOS:000376212200032
WOS关键词PROFILE GRAVEL LAYERS ; SEMIARID REGION ; NORTHWEST CHINA ; SAND MULCHES ; WATER CONSERVATION ; EVAPORATION ; INTERCEPTION ; ACCUMULATION ; AGRICULTURE ; ECOLOGY
WOS类目Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向Engineering ; Geology ; Water Resources
来源机构北京师范大学 ; 西北农林科技大学 ; 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/2XILL650/194515
作者单位1.Chinese Acad Sci, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China;
2.Minist Water Resources, Yangling 712100, Shaanxi, Peoples R China;
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China;
4.China Agr Univ, Coll Water Resources & Civil Engn, Beijing 100083, Peoples R China;
5.Beijing Normal Univ, Beijing 100875, Peoples R China;
6.Iowa State Univ, Dept Agron, Ames, IA 50011 USA
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GB/T 7714
Peng, Hongtao,Lei, Tingwu,Jiang, Zhiyun,et al. A method for estimating maximum static rainfall retention in pebble mulches used for soil moisture conservation[J]. 北京师范大学, 西北农林科技大学, 中国农业大学,2016,537:346-355.
APA Peng, Hongtao,Lei, Tingwu,Jiang, Zhiyun,&Horton, Robert.(2016).A method for estimating maximum static rainfall retention in pebble mulches used for soil moisture conservation.JOURNAL OF HYDROLOGY,537,346-355.
MLA Peng, Hongtao,et al."A method for estimating maximum static rainfall retention in pebble mulches used for soil moisture conservation".JOURNAL OF HYDROLOGY 537(2016):346-355.
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