Knowledge Resource Center for Ecological Environment in Arid Area
| DOI | 10.5194/bg-18-831-2021 |
| Patterns of plant rehydration and growth following pulses of soil moisture availability | |
| Feldman, Andrew F.; Gianotti, Daniel J. Short; Konings, Alexandra G.; Gentine, Pierre; Entekhabi, Dara | |
| 通讯作者 | Feldman, AF (corresponding author), MIT, Dept Civil & Environm Engn, 15 Vassar St, Cambridge, MA 02139 USA. |
| 来源期刊 | BIOGEOSCIENCES
 |
| ISSN | 1726-4170 |
| EISSN | 1726-4189 |
| 出版年 | 2021 |
| 卷号 | 18期号:3页码:831-847 |
| 英文摘要 | Plant hydraulic and photosynthetic responses to individual rain pulses are not well understood because field experiments of pulse behavior are sparse. Understanding individual pulse responses would inform how rainfall intermittency impacts terrestrial biogeochemical cycles, especially in drylands, which play a large role in interannual global atmospheric carbon uptake variability. Using satellite-based estimates of predawn plant and soil water content from the Soil Moisture Active Passive (SMAP) satellite, we quantify the timescales of plant water content increases following rainfall pulses, which we expect bear the signature of whole-plant mechanisms. In wetter regions, we find that plant water content increases rapidly and dries along with soil moisture, which we attribute to predawn soil-plant water potential equilibrium. Global drylands, by contrast, show multiday plant water content increases after rain pulses. Shorter increases are more common following dry initial soil conditions. These are attributed to slow plant rehydration due to high plant resistances using a plant hydraulic model. Longer multi-day dryland plant water content increases are attributed to pulse-driven growth, following larger rain pulses and wetter initial soil conditions. These dryland responses reflect widespread drought recovery rehydration responses and individual pulse-driven growth responses, as supported by previous isolated field experiments. The response dependence on moisture pulse characteristics, especially in drylands, also shows ecosystem sensitivity to intra-annual rainfall intensity and frequency, which are shifting with climate change. |
| 类型 | Article |
| 语种 | 英语 |
| 开放获取类型 | Green Submitted, gold |
| 收录类别 | SCI-E |
| WOS记录号 | WOS:000618241600001 |
| WOS关键词 | VEGETATION OPTICAL DEPTH ; WATER STORAGE ; TIME-SERIES ; PRECIPITATION PULSES ; SEMIARID ECOSYSTEMS ; MICROWAVE EMISSION ; AGAVE DESERTI ; LOBLOLLY-PINE ; GAS-EXCHANGE ; HYDRAULICS |
| WOS类目 | Ecology ; Geosciences, Multidisciplinary |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology |
| 资源类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/349691 |
| 作者单位 | [Feldman, Andrew F.; Gianotti, Daniel J. Short; Entekhabi, Dara] MIT, Dept Civil & Environm Engn, 15 Vassar St, Cambridge, MA 02139 USA; [Konings, Alexandra G.] Stanford Univ, Dept Earth Syst Sci, Stanford, CA 94305 USA; [Gentine, Pierre] Columbia Univ, Dept Earth & Environm Engn, New York, NY USA |
| 推荐引用方式 GB/T 7714 | Feldman, Andrew F.,Gianotti, Daniel J. Short,Konings, Alexandra G.,et al. Patterns of plant rehydration and growth following pulses of soil moisture availability[J],2021,18(3):831-847. |
| APA | Feldman, Andrew F.,Gianotti, Daniel J. Short,Konings, Alexandra G.,Gentine, Pierre,&Entekhabi, Dara.(2021).Patterns of plant rehydration and growth following pulses of soil moisture availability.BIOGEOSCIENCES,18(3),831-847. |
| MLA | Feldman, Andrew F.,et al."Patterns of plant rehydration and growth following pulses of soil moisture availability".BIOGEOSCIENCES 18.3(2021):831-847. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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