IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Root-soil air gap and resistance to water flow at the soil-root interface of Robinia pseudoacacia
Liu, X. P.1; Zhang, W. J.1; Wang, X. Y.1; Cai, Y. J.2; Chang, J. G.3
Corresponding AuthorZhang, W. J.
2015-12-01
Source PublicationTREE PHYSIOLOGY
ISSN0829-318X
Volume35Issue:12Pages:1343-1355
SubtypeArticle
AbstractDuring periods of water deficit, growing roots may shrink, retaining only partial contact with the soil. In this study, known mathematical models were used to calculate the root-soil air gap and water flow resistance at the soil-root interface, respectively, of Robinia pseudoacacia L. under different water conditions. Using a digital camera, the root-soil air gap of R. pseudoacacia was investigated in a root growth chamber; this root-soil air gap and the model-inferred water flow resistance at the soil-root interface were compared with predictions based on a separate outdoor experiment. The results indicated progressively greater root shrinkage and loss of root-soil contact with decreasing soil water potential. The average widths of the root-soil air gap for R. pseudoacacia in open fields and in the root growth chamber were 0.24 and 0.39 mm, respectively. The resistance to water flow at the soil-root interface in both environments increased with decreasing soil water potential. Stepwise regression analysis demonstrated that soil water potential and soil temperature were the best predictors of variation in the root-soil air gap. A combination of soil water potential, soil temperature, root-air water potential difference and soil-root water potential difference best predicted the resistance to water flow at the soil-root interface.
KeywordRobinia Pseudoacacia Root-soil Air Gap Soil-root Interface WAter Flow Resistance At The Soil-root Interface
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1093/treephys/tpv075
WOS Subject ExtendedForestry
Indexed BySCI
WOS KeywordTHIN-SECTION TECHNIQUE ; HYDRAULIC CONDUCTIVITY ; TAIHANG MOUNTAIN ; PLANT-ROOTS ; COMPUTED-TOMOGRAPHY ; TRANSPIRING PLANTS ; AGAVE DESERTI ; UPTAKE MODEL ; DRYING SOIL ; NORTH CHINA
Language英语
Quartile1区
TOP
WOS SubjectForestry
WOS IDWOS:000368440100007
Funding OrganizationNational Natural Science Foundation of China(31000251) ; 'Strategic Priority Research Program' of the Chinese Academy of Sciences(XDA05060600) ; Youth Innovation Promotion Association, CAS(2014083) ; Special Fund for Forest Scientific Research in the Public Welfare(201404214)
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Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/14174
Collection山地表生过程与生态调控重点实验室
Affiliation1.Chinese Acad Sci, Taihangshan Dongpo Forest Ecosyst Res Stn,Inst Ge, State Forestry Adm,Key Lab Agr Water Resources, Hebei Key Lab Agr Water Saving,Ctr Agr Resources, Shijiazhuang 050021, Peoples R China
2.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Peoples R China
3.Shanxi Acad Forestry Sci, Taiyuan 030012, Peoples R China
Recommended Citation
GB/T 7714
Liu, X. P.,Zhang, W. J.,Wang, X. Y.,et al. Root-soil air gap and resistance to water flow at the soil-root interface of Robinia pseudoacacia[J]. TREE PHYSIOLOGY,2015,35(12):1343-1355.
APA Liu, X. P.,Zhang, W. J.,Wang, X. Y.,Cai, Y. J.,&Chang, J. G..(2015).Root-soil air gap and resistance to water flow at the soil-root interface of Robinia pseudoacacia.TREE PHYSIOLOGY,35(12),1343-1355.
MLA Liu, X. P.,et al."Root-soil air gap and resistance to water flow at the soil-root interface of Robinia pseudoacacia".TREE PHYSIOLOGY 35.12(2015):1343-1355.
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