文献类型：期刊文献

英文题名：Experimental investigation of subsurface soil water evaporation on soil heat flux plate measurement

作者：Lu, Sen[1,2] Ma, Changming[3] Meng, Ping[1,2] Zhang, Jinsong[1] Zhang, Xiao[4] Lu, Yili[5] Yin, Changjun[1]

第一作者：陆森;Lu, Sen

通信作者：Lu, S[1]

机构：[1]Chinese Acad Forestry, Res Inst Forestry, State Forestry Adm, Key Lab Tree Breeding & Cultivat, Beijing 100091, Peoples R China;[2]Nanjing Forestry Univ, Coinnovat Ctr Sustaintable Forestry Southern Chin, Nanjing, Jiangsu, Peoples R China;[3]Agr Univ Hebei, Coll Forestry, Baoding 071000, Peoples R China;[4]Chinese Acad Forestry, Inst Desertificat Studies, Beijing 100091, Peoples R China;[5]China Agr Univ, Dept Soil & Water Sci, Beijing 100193, Peoples R China

年份：2016

卷号：93

起止页码：433-437

外文期刊名：APPLIED THERMAL ENGINEERING

收录：;EI(收录号：20154401465318);Scopus(收录号：2-s2.0-84945304990);WOS:【SCI-EXPANDED(收录号:WOS:000367776700045)】；

基金：The authors gratefully thank the anonymous reviewers for helpful comments to improve the manuscript. This study was supported by the Natural Science Foundation of China (No. 41371240), the Basic Research Fund of RIF (No. RIF2014-09), and the Beijing Natural Science Foundation (No. 6133035).

语种：英文

外文关键词：Soil heat flux; Soil water evaporation; Soil heat flux plate; Heat pulse

摘要：Accurate measurement of soil heat flux is required to describe the heat and mass transfer in soil. In this study, results of soil heat flux derived through the single probe and three needle gradient methods were compared with those obtained via the plate method. Field test was conducted on a bare loamy sand at 1-cm depth and a bare loam at 10-cm depth. Results from the two gradient methods revealed good agreement on flux measurement The evaporation rate was relatively large on loamy sand, and the flux magnitude measured by the two gradient methods was 1.5 times higher than that of the plate method at 1-cm depth. However, the flux underestimation of the plate method was not observed at 10-cm depth of the bare loam in which the evaporation rate was negligible. Thus, the blockage of vapor transfer from the impervious plates primarily explained the heat flow divergence between the plate and gradient methods. Needle-type sensors exhibited a slight disturbance on the soil over the plate method, which may improve measurement accuracy. Heat flux plates must be placed relatively deep in the soil profile (e.g., 10 cm) to minimize measurement errors. (C) 2015 Elsevier Ltd. All rights reserved.