Wet-dry cycles on sandy and loessial Negev soils: Implications for biocrust establishment and growth?
文献类型：期刊论文
| 作者 | Kidron, Giora J.1; Kronenfeld, Rafael3; Xiao, Bo2; Starinsky, Abraham1 |
| 刊名 | ECOHYDROLOGY
 |
| 出版日期 | 2021-11-13 |
| 页码 | 12 |
| 关键词 | capillarity dew distillation relative humidity temperature-induced vapor flux |
| ISSN号 | 1936-0584 |
| DOI | 10.1002/eco.2379 |
| 通讯作者 | Kidron, Giora J.(kidron@mail.huji.ac.il) |
| 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. |
| WOS关键词 | MOSS-DOMINATED BIOCRUSTS ; DAILY TEMPERATURE WAVE ; MICROBIOTIC CRUSTS ; DEW DEPOSITION ; WATER TRANSPORT ; DESERT ; DUNES ; MOISTURE ; EVAPORATION ; INFILTRABILITY |
| WOS研究方向 | Environmental Sciences & Ecology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000718002600001 |
| 出版者 | WILEY |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/167914]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Kidron, Giora J. |
| 作者单位 | 1.Hebrew Univ Jerusalem, Inst Earth Sci, IL-91904 Jerusalem, Israel 2.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Shaanxi, Peoples R China 3.Israel Meteorol Serv, Meteorol Unit, Kibbutz Sede Boqer, Israel |
| 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]. ECOHYDROLOGY,2021:12. |
| 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,12. |
| MLA | Kidron, Giora J.,et al."Wet-dry cycles on sandy and loessial Negev soils: Implications for biocrust establishment and growth?".ECOHYDROLOGY (2021):12. |
入库方式： OAI收割
来源：地理科学与资源研究所
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