Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.13887 |
The origin of soil organic matter controls its composition and bioreactivity across a mesic boreal forest latitudinal gradient | |
Kohl, Lukas1,3; Philben, Michael1,4; Edwards, Kate A.2,5; Podrebarac, Frances A.1,6; Warren, Jamie1; Ziegler, Susan E.1 | |
2018-02-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY |
ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2018 |
卷号 | 24期号:2页码:E458-E473 |
文章类型 | Article |
语种 | 英语 |
国家 | Canada; USA |
英文摘要 | Warmer climates have been associated with reduced bioreactivity of soil organic matter (SOM) typically attributed to increased diagenesis; the combined biological and physiochemical transformation of SOM. In addition, cross-site studies have indicated that ecosystem regime shifts, associated with long-term climate warming, can affect SOM properties through changes in vegetation and plant litter production thereby altering the composition of soil inputs. The relative importance of these two controls, diagenesis and inputs, on SOM properties as ecosystems experience climate warming, however, remains poorly understood. To address this issue we characterized the elemental, chemical (nuclear magnetic resonance spectroscopy and total hydrolysable amino acids analysis), and isotopic composition of plant litter and SOM across a well-constrained mesic boreal forest latitudinal transect in Atlantic Canada. Results across forest sites within each of three climate regions indicated that (1) climate history and diagenesis affect distinct parameters of SOM chemistry, (2) increases in SOM bioreactivity with latitude were associated with elevated proportions of carbohydrates relative to plant waxes and lignin, and (3) despite the common forest type across regions, differences in SOM chemistry by climate region were associated with chemically distinct litter inputs and not different degrees of diagenesis. The observed climate effects on vascular plant litter chemistry, however, explained only part of the regional differences in SOM chemistry, most notably the higher protein content of SOM from warmer regions. Greater proportions of lignin and aliphatic compounds and smaller proportions of carbohydrates in warmer sites' soils were explained by the higher proportion of vascular plant relative to moss litter in the warmer relative to cooler forests. These results indicate that climate change induced decreases in the proportion of moss inputs not only impacts SOM chemistry but also increases the resistance of SOM to decomposition, thus significantly altering SOM cycling in these boreal forest soils. |
英文关键词 | bioreactivity Boreal forest climate change moss nuclear magnetic resonance Soil organic matter total hydrolysable amino acids vegetation |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000423994700008 |
WOS关键词 | NET PRIMARY PRODUCTION ; TEMPERATURE SENSITIVITY ; ANTIBACTERIAL ACTIVITY ; LITTER DECOMPOSITION ; CARBON DISTRIBUTION ; NITROGEN DYNAMICS ; AMINO-ACIDS ; BULK SOILS ; JACK PINE ; C-13 NMR |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/17053 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Mem Univ, Dept Earth Sci, St John, NF, Canada; 2.Nat Resources Canada, Canadian Forest Serv, Atlantic Forestry Ctr, Corner Brook, NF, Canada; 3.Univ Toronto, Dept Chem Engn, Toronto, ON, Canada; 4.Oak Ridge Natl Lab, Div Environm Sci, POB 2008, Oak Ridge, TN 37831 USA; 5.Nat Resources Canada, Sci Policy Integrat Branch, Canadian Forest Serv, Ottawa, ON, Canada; 6.Nat Resource Conservat Serv, USDA, Columbus, IN USA |
推荐引用方式 GB/T 7714 | Kohl, Lukas,Philben, Michael,Edwards, Kate A.,et al. The origin of soil organic matter controls its composition and bioreactivity across a mesic boreal forest latitudinal gradient[J]. GLOBAL CHANGE BIOLOGY,2018,24(2):E458-E473. |
APA | Kohl, Lukas,Philben, Michael,Edwards, Kate A.,Podrebarac, Frances A.,Warren, Jamie,&Ziegler, Susan E..(2018).The origin of soil organic matter controls its composition and bioreactivity across a mesic boreal forest latitudinal gradient.GLOBAL CHANGE BIOLOGY,24(2),E458-E473. |
MLA | Kohl, Lukas,et al."The origin of soil organic matter controls its composition and bioreactivity across a mesic boreal forest latitudinal gradient".GLOBAL CHANGE BIOLOGY 24.2(2018):E458-E473. |
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