干旱区生态环境知识资源中心(Arid): Partitioning evapotranspiration and its long-term evolution in a dry pine forest using measurement-based estimates of soil evaporation

Arid

DOI	10.1016/j.agrformet.2019.107831
	Partitioning evapotranspiration and its long-term evolution in a dry pine forest using measurement-based estimates of soil evaporation
	Qubaja, Rafat 1; Amer, Madi 1; Tatarinov, Fyodor 1; Rotenberg, Eyal 1; Preisler, Yakir 1; Sprintsin, Michael 2; Yakir, Dan 1
通讯作者	Yakir, Dan
来源期刊	AGRICULTURAL AND FOREST METEOROLOGY
ISSN	0168-1923
EISSN	1873-2240
出版年	2020
卷号	281
英文摘要	The future of forests and their productivity in dry environments will depend on both water availability through precipitation and ecosystem and plant water use characteristics. It is increasingly recognized that better understanding water use patterns and their response to change depends on our ability to partition evapotranspiration (ET). Here, we use chamber-based direct measurements of soil evaporation (Es) in a semi-arid Pinus halepensis forest to partition ET to Es and tree transpiration (Et), to assess the daily and seasonal changes and to compare annual-scale values with measurements carried out at the same site ten years earlier. The ecosystem is characterized by a high annual Es/ET ratio of 0.26, and an Et/ET of 0.63. Es diminished in the long dry season, but as much as 74 +/- 5% of the residual flux was due to the re-evaporation of nighttime moisture adsorption, which may provide critical protection from soil drying. Over the 10 years observation period concurrent increase in the transpiration ratio (TR=Et/ET; +29%) and in leaf area index (LAI; +44%) were observed, with the ratio of TR/LAI remaining constant at similar to 0.31, and with persistently closed hydrological balance (ET/P of 0.94-1.07). The observed Et/ET values are similar to the estimated global mean values, but are attained at a much higher aridity index (5.5) than the mean one, demonstrating the potential for expanding forestation into dry regions.
英文关键词	Soil evaporation and adsorption Semi-arid ecosystem Pine forest Evapotranspiration partitioning Canopy cover Soil chamber
类型	Article
语种	英语
国家	Israel
收录类别	SCI-E
WOS记录号	WOS:000525808600016
WOS关键词	WATER-VAPOR ADSORPTION ; USE EFFICIENCY ; NEGEV DESERT ; RAINFALL INTERCEPTION ; CARBON ; TRANSPIRATION ; BALANCE ; DEW ; DYNAMICS ; EXCHANGE
WOS类目	Agronomy ; Forestry ; Meteorology & Atmospheric Sciences
WOS研究方向	Agriculture ; Forestry ; Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/313917
作者单位	1.Weizmann Inst Sci, Dept Earth & Planetary Sci, IL-76100 Rehovot, Israel; 2.Keren Kayemet LeIsrael Jewish Natl Fund, Land Dev Author, Eshtaol, Israel
推荐引用方式 GB/T 7714	Qubaja, Rafat,Amer, Madi,Tatarinov, Fyodor,et al. Partitioning evapotranspiration and its long-term evolution in a dry pine forest using measurement-based estimates of soil evaporation[J],2020,281.
APA	Qubaja, Rafat.,Amer, Madi.,Tatarinov, Fyodor.,Rotenberg, Eyal.,Preisler, Yakir.,...&Yakir, Dan.(2020).Partitioning evapotranspiration and its long-term evolution in a dry pine forest using measurement-based estimates of soil evaporation.AGRICULTURAL AND FOREST METEOROLOGY,281.
MLA	Qubaja, Rafat,et al."Partitioning evapotranspiration and its long-term evolution in a dry pine forest using measurement-based estimates of soil evaporation".AGRICULTURAL AND FOREST METEOROLOGY 281(2020).