干旱区生态环境知识资源中心(Arid): Wet-dry cycles on sandy and loessial Negev soils: Implications for biocrust establishment and growth?

Arid

DOI	10.1002/eco.2379
	Wet-dry cycles on sandy and loessial Negev soils: Implications for biocrust establishment and growth?
	Kidron, Giora J.; Kronenfeld, Rafael; Xiao, Bo; Starinsky, Abraham
通讯作者	Kidron, GJ (corresponding author), Hebrew Univ Jerusalem, Inst Earth Sci, IL-91904 Jerusalem, Israel.
来源期刊	ECOHYDROLOGY
ISSN	1936-0584
EISSN	1936-0592
出版年	2021-11
英文摘要	Long-term field campaigns in the Negev observed wet-dry cycles (WDCs) following rain events, principally on sand. Aiming to assess the relevant mechanism (whether dewfall, water capillarity or distillation derived by temperature-induced vapor flux [TIVF] which stems from the soil), a set of outdoor experiments was conducted on sand and loess. They included nonrainfall water (NRW) and temperature measurements during the rainless dry seasons (summer, fall) and during the winter, which was divided to a wet (following rain) and dry periods. Dew measurements were conducted on cloths, whether directly attached to the soil or located at 0.5 cm above ground, aiming to eliminate capillarity and assessing the possible contribution of dewfall and TIVF-induced distillation. Our findings show that (a) WDCs were only observed following rainstorms, particularly on sand, (b) WDCs could not have been explained by capillarity (they continued at the presence of an air gap), (c) significantly lower minimum surface temperatures (averaging 0.8 degrees C) characterized the sand, which following rainstorms resulted in higher NRW due to TIVF, that is, visibly noted WDCs. With sand being characterized by a lush cover of biocrusts in the Negev dunefields, while being largely absent from the loessial playas scattered within the dunefield, it is suggested that WDCs may play an important role in the establishment and growth of biocrusts over sand dunes of the Negev and possibly in other arid dunes.
英文关键词	capillarity dew distillation relative humidity temperature-induced vapor flux
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000718002600001
WOS关键词	MOSS-DOMINATED BIOCRUSTS ; DAILY TEMPERATURE WAVE ; MICROBIOTIC CRUSTS ; DEW DEPOSITION ; WATER TRANSPORT ; DESERT ; DUNES ; MOISTURE ; EVAPORATION ; INFILTRABILITY
WOS类目	Ecology ; Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
来源机构	西北农林科技大学 ; Hebrew University of Jerusalem
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/367663
作者单位	[Kidron, Giora J.; Starinsky, Abraham] Hebrew Univ Jerusalem, Inst Earth Sci, IL-91904 Jerusalem, Israel; [Kronenfeld, Rafael] Israel Meteorol Serv, Meteorol Unit, Kibbutz Sede Boqer, Israel; [Xiao, Bo] Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Kidron, Giora J.,Kronenfeld, Rafael,Xiao, Bo,et al. Wet-dry cycles on sandy and loessial Negev soils: Implications for biocrust establishment and growth?[J]. 西北农林科技大学, Hebrew University of Jerusalem,2021.
APA	Kidron, Giora J.,Kronenfeld, Rafael,Xiao, Bo,&Starinsky, Abraham.(2021).Wet-dry cycles on sandy and loessial Negev soils: Implications for biocrust establishment and growth?.ECOHYDROLOGY.
MLA	Kidron, Giora J.,et al."Wet-dry cycles on sandy and loessial Negev soils: Implications for biocrust establishment and growth?".ECOHYDROLOGY (2021).