Arid
DOI10.1038/s41477-018-0304-9
Moisture pulse-reserve in the soil-plant continuum observed across biomes
Feldman, Andrew F.1; Gianotti, Daniel J. Short1; Konings, Alexandra G.2; McColl, Kaighin A.3,4; Akbar, Ruzbeh1; Salvucci, Guido D.5; Entekhabi, Dara1
通讯作者Feldman, Andrew F.
来源期刊NATURE PLANTS
ISSN2055-026X
EISSN2055-0278
出版年2018
卷号4期号:12页码:1026-1033
英文摘要

The degree to which individual pulses of available water drive plant activity across diverse biomes and climates is not well understood. It has previously only been investigated in a few dryland locations. Here, plant water uptake following pulses of surface soil moisture, an indicator for the pulse-reserve hypothesis, is investigated across South America, Africa and Australia with satellite-based estimates of surface soil and canopy water content. Our findings show that this behaviour is widespread: occurring over half of the vegetated landscapes. We estimate spatially varying soil moisture thresholds at which plant water uptake ceases, noting dependence on soil texture and proximity to the wilting point. The soil type and biome-dependent soil moisture threshold and the plant soil water uptake patterns at the scale of Earth system models allow a unique opportunity to test and improve model parameterization of vegetation function under water limitation.


类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000454576600012
WOS关键词VEGETATION OPTICAL DEPTH ; MICROWAVE EMISSION ; WATER ; PRECIPITATION ; ECOSYSTEMS ; RESPONSES ; RESOURCE ; DRY ; GRASSES ; DESERT
WOS类目Plant Sciences
WOS研究方向Plant Sciences
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/211815
作者单位1.MIT, Dept Civil & Environm Engn, 77 Massachusetts Ave, Cambridge, MA 02139 USA;
2.Stanford Univ, Dept Earth Syst Sci, Stanford, CA 94305 USA;
3.Harvard Univ, Dept Earth & Planetary Sci, 20 Oxford St, Cambridge, MA 02138 USA;
4.Harvard Univ, Harvard John A Paulson Sch Engn & Appl Sci, Cambridge, MA 02138 USA;
5.Boston Univ, Dept Earth & Environm, Boston, MA 02215 USA
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Feldman, Andrew F.,Gianotti, Daniel J. Short,Konings, Alexandra G.,et al. Moisture pulse-reserve in the soil-plant continuum observed across biomes[J],2018,4(12):1026-1033.
APA Feldman, Andrew F..,Gianotti, Daniel J. Short.,Konings, Alexandra G..,McColl, Kaighin A..,Akbar, Ruzbeh.,...&Entekhabi, Dara.(2018).Moisture pulse-reserve in the soil-plant continuum observed across biomes.NATURE PLANTS,4(12),1026-1033.
MLA Feldman, Andrew F.,et al."Moisture pulse-reserve in the soil-plant continuum observed across biomes".NATURE PLANTS 4.12(2018):1026-1033.
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