Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1111/nph.13003 |
The unseen iceberg: plant roots in arctic tundra | |
Iversen, Colleen M.1,2; Sloan, Victoria L.1,2; Sullivan, Patrick F.3; Euskirchen, Eugenie S.4; McGuire, A. David5; Norby, Richard J.1,2; Walker, Anthony P.1,2; Warren, Jeffrey M.1,2; Wullschleger, Stan D.1,2 | |
通讯作者 | Iversen, Colleen M. |
来源期刊 | NEW PHYTOLOGIST |
ISSN | 0028-646X |
EISSN | 1469-8137 |
出版年 | 2015 |
卷号 | 205期号:1页码:34-58 |
英文摘要 | Plant roots play a critical role in ecosystem function in arctic tundra, but root dynamics in these ecosystems are poorly understood. To address this knowledge gap, we synthesized available literature on tundra roots, including their distribution, dynamics and contribution to ecosystem carbon and nutrient fluxes, and highlighted key aspects of their representation in terrestrial biosphere models. Across all tundra ecosystems, belowground plant biomass exceeded aboveground biomass, with the exception of polar desert tundra. Roots were shallowly distributed in the thin layer of soil that thaws annually, and were often found in surface organic soil horizons. Root traits - including distribution, chemistry, anatomy and resource partitioning - play an important role in controlling plant species competition, and therefore ecosystem carbon and nutrient fluxes, under changing climatic conditions, but have only been quantified for a small fraction of tundra plants. Further, the annual production and mortality of fine roots are key components of ecosystem processes in tundra, but extant data are sparse. Tundra root traits and dynamics should be the focus of future research efforts. Better representation of the dynamics and characteristics of tundra roots will improve the utility of models for the evaluation of the responses of tundra ecosystems to changing environmental conditions. |
英文关键词 | arctic fine roots model plant-soil root biomass root production root turnover tundra |
类型 | Review |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000345596700010 |
WOS关键词 | LITTER DECOMPOSITION RATES ; ECOSYSTEM CARBON STORAGE ; LONG-TERM FERTILIZATION ; SOIL ORGANIC-CARBON ; ERIOPHORUM-VAGINATUM ; VASCULAR PLANTS ; PHOSPHATE ABSORPTION ; MYCORRHIZAL FUNGI ; METHANE EMISSIONS ; ALASKAN TUNDRA |
WOS类目 | Plant Sciences |
WOS研究方向 | Plant Sciences |
来源机构 | United States Geological Survey |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/189362 |
作者单位 | 1.Oak Ridge Natl Lab, Climate Change Sci Inst, Oak Ridge, TN 37831 USA; 2.Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA; 3.Univ Alaska Anchorage, Environm & Nat Resources Inst, Anchorage, AK 99508 USA; 4.Univ Alaska, Inst Arctic Biol, Fairbanks, AK 99775 USA; 5.Univ Alaska, US Geol Survey, Alaska Cooperat Fish & Wildlife Res, Fairbanks, AK 99775 USA |
推荐引用方式 GB/T 7714 | Iversen, Colleen M.,Sloan, Victoria L.,Sullivan, Patrick F.,et al. The unseen iceberg: plant roots in arctic tundra[J]. United States Geological Survey,2015,205(1):34-58. |
APA | Iversen, Colleen M..,Sloan, Victoria L..,Sullivan, Patrick F..,Euskirchen, Eugenie S..,McGuire, A. David.,...&Wullschleger, Stan D..(2015).The unseen iceberg: plant roots in arctic tundra.NEW PHYTOLOGIST,205(1),34-58. |
MLA | Iversen, Colleen M.,et al."The unseen iceberg: plant roots in arctic tundra".NEW PHYTOLOGIST 205.1(2015):34-58. |
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