Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.3389/fpls.2018.00248 |
Mini-Review: Stemflow as a Resource Limitation to Near-Stem Soils | |
Van Stan, John T.; Gordon, Dennis A. | |
通讯作者 | Van Stan, John T. |
来源期刊 | FRONTIERS IN PLANT SCIENCE
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ISSN | 1664-462X |
出版年 | 2018 |
卷号 | 9 |
英文摘要 | Stemflow, a precipitation and solute supply to soils near tree stems, can play a wide array of roles in ecosystem functioning. However, stemflow’s ecohydrological functions have been primarily studied in forests with voluminous stemflow because resource subsidy is currently considered stemflow’s only impact on near-stem soils. This common assumption ignores controls that stemflow generation may exert via resource limitation (when stemflow < open rainfall and near-stem throughfall is negligible). We reviewed selected literature across numerous forests to evaluate the predominance of stemflow as a potential resource limitation to near-stem soils and characterized the concentrated, but meager, solute flux from low stemflow generators. Global observations of stemflow were highly skewed (skewness = 4.6) and leptokurtic (kurtosis = 28.8), where 69% of observations were <= 2% of rainfall. Stemflow <= 2% of rainfall is 10-100 times more chemically enriched than open rainfall, yet low volumes result in negligible solute fluxes (under 1 g m(-2) y(-1)). Reduced stemflow may be the global and regional norm, creating persistently dry near-stem soils that receive infrequent, salty, and paltry precipitation flux if throughfall is also low. Ignoring stemflow because it results in scarcity likely limits our understanding of ecosystem functioning as resource limitations alter the fate of soil nutrients, energy flows, and spatial patterning of biogeochemical processes. |
英文关键词 | ecohydrology stemflow forest ecology plant-soil interactions arid environment |
类型 | Review |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000426171500001 |
WOS关键词 | SPRUCE PICEA-ABIES ; SPATIAL-PATTERNS ; NUTRIENT FLUXES ; ATMOSPHERIC DEPOSITION ; DESICCATION-TOLERANCE ; SOLUTION CHEMISTRY ; PREFERENTIAL FLOW ; INTERCEPTION LOSS ; ORGANIC-MATTER ; DESERT SHRUBS |
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/2XILL650/209465 |
作者单位 | Georgia Southern Univ, Geol & Geog, Statesboro, GA 30460 USA |
推荐引用方式 GB/T 7714 | Van Stan, John T.,Gordon, Dennis A.. Mini-Review: Stemflow as a Resource Limitation to Near-Stem Soils[J],2018,9. |
APA | Van Stan, John T.,&Gordon, Dennis A..(2018).Mini-Review: Stemflow as a Resource Limitation to Near-Stem Soils.FRONTIERS IN PLANT SCIENCE,9. |
MLA | Van Stan, John T.,et al."Mini-Review: Stemflow as a Resource Limitation to Near-Stem Soils".FRONTIERS IN PLANT SCIENCE 9(2018). |
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