Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.agrformet.2018.05.015 |
Dew deposition suppresses transpiration and carbon uptake in leaves | |
Gerlein-Safdi, Cynthia1; Koohafkan, Michael C.2,3; Chung, Michaella3; Rockwell, Fulton E.4; Thompson, Sally3; Caylor, Kelly K.1,5,6 | |
通讯作者 | Gerlein-Safdi, Cynthia |
来源期刊 | AGRICULTURAL AND FOREST METEOROLOGY
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ISSN | 0168-1923 |
EISSN | 1873-2240 |
出版年 | 2018 |
卷号 | 259页码:305-316 |
英文摘要 | Dew deposition occurs in ecosystems worldwide, even in the driest deserts and in times of drought. Although some species absorb dew water directly via foliar uptake, a ubiquitous effect of dew on plant water balance is the interference of dew droplets with the leaf energy balance, which increases leaf albedo and emissivity and decreases leaf temperature through dew evaporation. Dew deposition frequency and amount are expected to be affected by changing environmental conditions, with unknown consequences for plant water stress and ecosystem carbon, water and energy fluxes. Here we present a simple leaf energy balance that characterizes the effect of deposition and the evaporation of dew on leaf energy balance, transpiration, and carbon uptake. The model is driven by five common meteorological variables and shows very good agreement with leaf wetness sensor data from the Blue Oak Ranch Reserve in California. We explore the tradeoffs between energy, water, and carbon balances for leaves of different sizes across a range of relative humidity, wind speed, and air temperature conditions. Our results show significant water savings from transpiration suppression up to 25% for leaf characteristic lengths of 50 cm. CO2 assimilation is decreased by up to 12% by the presence of dew, except for bigger leaves in windspeed conditions below 1 m s(-1) when an increase in assimilation is expected. |
英文关键词 | Carbon assimilation Dew Fog Leaf energy balance Leaf wetness Transpiration suppression |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000437064400028 |
WOS关键词 | LEAF WETNESS DURATION ; ENERGY-BALANCE MODEL ; TROPICAL RAIN-FOREST ; MONTANE CLOUD FOREST ; DRY DECIDUOUS FOREST ; STOMATAL CONDUCTANCE ; DOWNY MILDEW ; NEGEV DESERT ; WATER-BUDGET ; ANGLE |
WOS类目 | Agronomy ; Forestry ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Agriculture ; Forestry ; Meteorology & Atmospheric Sciences |
来源机构 | University of California, Davis ; University of California, Berkeley |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/207323 |
作者单位 | 1.Princeton Univ, Dept Civil & Environm Engn, Princeton, NJ 08544 USA; 2.Univ Calif Davis, Hydrol Sci Grad Grp, Davis, CA 95616 USA; 3.Univ Calif Berkeley, Dept Civil & Environm Engn, Berkeley, CA 94720 USA; 4.Harvard Univ, Dept Organism & Evolutionary Biol, Cambridge, MA 02138 USA; 5.Univ Calif Santa Barbara, Dept Geog, Santa Barbara, CA 93106 USA; 6.UC Santa Barbara, Bren Sch Environm Sci & Managemen4, Santa Barbara, CA 93106 USA |
推荐引用方式 GB/T 7714 | Gerlein-Safdi, Cynthia,Koohafkan, Michael C.,Chung, Michaella,et al. Dew deposition suppresses transpiration and carbon uptake in leaves[J]. University of California, Davis, University of California, Berkeley,2018,259:305-316. |
APA | Gerlein-Safdi, Cynthia,Koohafkan, Michael C.,Chung, Michaella,Rockwell, Fulton E.,Thompson, Sally,&Caylor, Kelly K..(2018).Dew deposition suppresses transpiration and carbon uptake in leaves.AGRICULTURAL AND FOREST METEOROLOGY,259,305-316. |
MLA | Gerlein-Safdi, Cynthia,et al."Dew deposition suppresses transpiration and carbon uptake in leaves".AGRICULTURAL AND FOREST METEOROLOGY 259(2018):305-316. |
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