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Canopy interception of apple orchards should not be ignored when assessing evapotranspiration partitioning on the Loess Plateau in China
Wang, Di1,2; Wang, Li1,3
2019-01-30
Source PublicationHYDROLOGICAL PROCESSES
ISSN0885-6087
Volume33Issue:3Pages:372-382
Corresponding AuthorWang, Li(wangli5208@nwsuaf.edu.cn)
AbstractCanopy interception is one of the most important processes in an ecosystem, but it is still neglected when assessing evapotranspiration (ET) partitioning in apple orchards on the Loess Plateau in China. To explore the importance of canopy interception, we monitored two neighbouring apple orchards on the Loess Plateau in China, one 8-year-old and the other 18-years old at the start of the study, from May to September for four consecutive years (2013-2016). We measured parameters of canopy interception (I) including precipitation, throughfall, stemflow, leaf area index, transpiration (T), and soil evaporation (S) to quantify ET. The importance of canopy interception was then assessed by comparing the relationship between water supply (precipitation) and water demand (ET), calculated with and without considering canopy interception (T + S and T + S + I, respectively). Tree age clearly influenced canopy interception, as estimates of annual canopy interception during the study years in the younger and older orchards amounted to 22.2-29.4 mm and 26.8-39.9 mm, respectively. Daily incident rainfall and rainfall intensity in both orchards were significantly positively correlated with daily canopy interception in each year. The relationship between annual precipitation and annual ET (calculated with and without consideration of canopy interception) in the younger orchard differed during 2015 and 2016. Ignoring canopy interception would result in underestimation of annual ET in both apple orchards and hence incorrect evaluation of the relationship between water supply and water demand, particularly for the younger orchard during 2015 and 2016. Thus, for a complete understanding of water consumption in apple orchards in this and similar regions, canopy interception should not be ignored when assessing ET partitioning.
Keywordapple orchards canopy interception evapotranspiration precipitation
DOI10.1002/hyp.13330
WOS KeywordSAP FLOW ; WATER ; MODEL ; TREES ; THROUGHFALL ; REGION ; FOREST
Indexed BySCI
Language英语
Funding ProjectState Key Laboratory of Urban and Regional Ecology Open Foundation[SKLURE2016-2-4] ; National Key Research and Development Program of China[2016YFC0501604] ; National Natural Science Foundation of China[41530854] ; National Natural Science Foundation of China[41771545] ; National Natural Science Foundation of China[41741002]
Funding OrganizationState Key Laboratory of Urban and Regional Ecology Open Foundation ; National Key Research and Development Program of China ; National Natural Science Foundation of China
WOS Research AreaWater Resources
WOS SubjectWater Resources
WOS IDWOS:000456206300004
PublisherWILEY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/50642
Collection中国科学院地理科学与资源研究所
Corresponding AuthorWang, Li
Affiliation1.Northwest A&F Univ, Coll Resources & Environm, Yangling, Shaanxi, Peoples R China
2.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China
3.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Shaanxi, Peoples R China
Recommended Citation
GB/T 7714
Wang, Di,Wang, Li. Canopy interception of apple orchards should not be ignored when assessing evapotranspiration partitioning on the Loess Plateau in China[J]. HYDROLOGICAL PROCESSES,2019,33(3):372-382.
APA Wang, Di,&Wang, Li.(2019).Canopy interception of apple orchards should not be ignored when assessing evapotranspiration partitioning on the Loess Plateau in China.HYDROLOGICAL PROCESSES,33(3),372-382.
MLA Wang, Di,et al."Canopy interception of apple orchards should not be ignored when assessing evapotranspiration partitioning on the Loess Plateau in China".HYDROLOGICAL PROCESSES 33.3(2019):372-382.
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