Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.13751 |
Plant litter chemistry alters the content and composition of organic carbon associated with soil mineral and aggregate fractions in invaded ecosystems | |
Tamura, Mioko1; Suseela, Vidya1; Simpson, Myrna2; Powell, Brian3; Tharayil, Nishanth1 | |
2017-10-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY |
ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2017 |
卷号 | 23期号:10 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Canada |
英文摘要 | Through the input of disproportionate quantities of chemically distinct litter, invasive plants may potentially influence the fate of organic matter associated with soil mineral and aggregate fractions in some of the ecosystems they invade. Although context dependent, these native ecosystems subjected to prolonged invasion by exotic plants may be instrumental in distinguishing the role of plant-microbe-mineral interactions from the broader edaphic and climatic influences on the formation of soil organic matter (SOM). We hypothesized that the soils subjected to prolonged invasion by an exotic plant that input recalcitrant litter (Japanese knotweed, Polygonum cuspidatum) would have a greater proportion of plant-derived carbon (C) in the aggregate fractions, as compared with that in adjacent soil inhabited by native vegetation that input labile litter, whereas the soils under an invader that input labile litter (kudzu, Pueraria lobata) would have a greater proportion of microbial-derived C in the silt-clay fraction, as compared with that in adjacent soils that receive recalcitrant litter. At the knotweed site, the higher C content in soils under P. cuspidatum, compared with noninvaded soils inhabited by grasses and forbs, was limited to the macroaggregate fraction, which was abundant in plant biomarkers. The noninvaded soils at this site had a higher abundance of lignins in mineral and microaggregate fractions and suberin in the macroaggregate fraction, partly because of the greater root density of the native species, which might have had an overriding influence on the chemistry of the above-ground litter input. At the kudzu site, soils under P. lobata had lower C content across all size fractions at a 0-5 cm soil depth despite receiving similar amounts of Pinus litter. Contrary to our prediction, the noninvaded soils receiving recalcitrant Pinus litter had a similar abundance of plant biomarkers across both mineral and aggregate fractions, potentially because of the higher surface area of soil minerals at this site. The plant biomarkers were lower in the aggregate fractions of the P. lobata-invaded soils, compared with noninvaded pine stands, potentially suggesting a microbial co-metabolism of pinederived compounds. These results highlight the complex interactions among litter chemistry, soil biota, and minerals in mediating soil C storage in unmanaged ecosystems; these interactions are particularly important under global changes that may alter plant species composition and hence the quantity and chemistry of litter inputs in terrestrial ecosystems. |
英文关键词 | mineral-associated carbon plant invasion Polygonum cuspidatum Pueraria lobata soil aggregates soil organic matter |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000410642100005 |
WOS关键词 | INVASIVE ALIEN PLANTS ; FT-IR SPECTROSCOPY ; STABILIZATION MECHANISMS ; POLYGONUM-CUSPIDATUM ; MYCORRHIZAL FUNGI ; NMR-SPECTROSCOPY ; TEMPERATE SOILS ; SIZE FRACTIONS ; GRASS INVASION ; USE EFFICIENCY |
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/17219 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Clemson Univ, Dept Plant & Environm Sci, Clemson, SC 29634 USA; 2.Univ Toronto, Dept Phys & Environm Sci, Toronto, ON, Canada; 3.Clemson Univ, Dept Environm Engn & Earth Sci, Clemson, SC USA |
推荐引用方式 GB/T 7714 | Tamura, Mioko,Suseela, Vidya,Simpson, Myrna,et al. Plant litter chemistry alters the content and composition of organic carbon associated with soil mineral and aggregate fractions in invaded ecosystems[J]. GLOBAL CHANGE BIOLOGY,2017,23(10). |
APA | Tamura, Mioko,Suseela, Vidya,Simpson, Myrna,Powell, Brian,&Tharayil, Nishanth.(2017).Plant litter chemistry alters the content and composition of organic carbon associated with soil mineral and aggregate fractions in invaded ecosystems.GLOBAL CHANGE BIOLOGY,23(10). |
MLA | Tamura, Mioko,et al."Plant litter chemistry alters the content and composition of organic carbon associated with soil mineral and aggregate fractions in invaded ecosystems".GLOBAL CHANGE BIOLOGY 23.10(2017). |
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