DOI: 10.1002/2014GL061439
论文题名: Global synthesis of vegetation control on evapotranspiration partitioning
作者: Wang L. ; Good S.P. ; Caylor K.K.
刊名: Geophysical Research Letters
ISSN: 0094-9741
EISSN: 1944-9472
出版年: 2014
卷: 41, 期: 19 起始页码: 6753
结束页码: 6757
语种: 英语
英文关键词: evaporation
; LAI
; partition
; soil texture
; transpiration
; VPD
Scopus关键词: Evaporation
; Partitions (building)
; Transpiration
; Vegetation
; Global synthesis
; Hydrological cycles
; LAI
; Leaf Area Index
; Non-linear relationships
; Soil textures
; Vegetation control
; VPD
; Evapotranspiration
; evapotranspiration
; global climate
; growth rate
; hydrological cycle
; leaf area
; nonlinearity
; vegetation cover
英文摘要: Evapotranspiration (ET) is an important component of the global hydrological cycle. However, to what extent transpiration ratios (T/ET) are controlled by vegetation and the mechanisms of global-scale T/ET variations are not clear. We synthesized all the published papers that measured at least two of the three components (E, T, and ET) and leaf area index (LAI) simultaneously. Nonlinear relationships between T/ET and LAI were identified for both the overall data set and agricultural or natural data subsets. Large variations in T/ET occurred across all LAI ranges with wider variability at lower LAI. For a given LAI, higher T/ET was observed during later vegetation growing stage within a season. We developed a function relating T/ET to the growing stage relative to the timing of peak LAI. LAI and growing stage collectively explained 43% of the variations in the global T/ET data set, providing a new way to interpret and model global T/ET variability. Key Points We reported the practical upper limit of vegetation control on T/ETFor a given leaf area, higher T/ET ratios occurred in the latter growing stage within a seasonGrowing stage and LAI explain 43% of the global T/ET variability ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84911443285&doi=10.1002%2f2014GL061439&partnerID=40&md5=fd0a59d71aeb9b110389c67a13bf1d49
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7005
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: Department of Earth Sciences, Indiana University-Purdue University Indianapolis, Indianapolis, IN, United States
Recommended Citation:
Wang L.,Good S.P.,Caylor K.K.. Global synthesis of vegetation control on evapotranspiration partitioning[J]. Geophysical Research Letters,2014-01-01,41(19).