Compositional characteristics of fluvial particulate organic matter exported from the world’s largest alpine wetland
文献类型：期刊论文
| 作者 | Dai Guohua4; Zhu Erxiong1,4; Liu Zongguang1,4; Wang Yiyun1,4; Zhu Shanshan1,4; Wang Simin1,4; Ma Tian1,4 ; Jia Juan1,4; Wang Xin1,4; Hou Shengjie3
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| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
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| 出版日期 | 2019-09 |
| 卷号 | 124页码:2709-2727 |
| 关键词 | particulate organic matter composition source seasonal variation river Zoige wetland |
| ISSN号 | 2169-8953 |
| DOI | 10.1029/2019JG005231 |
| 英文摘要 | Wetlands are hot spots for particulate organic matter (POM) supply into rivers, which link the land‐ocean transfer in the global carbon cycle. However, the source, composition, and seasonal variability of POM carried by wetland‐draining rivers are poorly constrained. Here we combine bulk and source‐specific biomarker analyses to investigate the fluvial POM biogeochemistry of the Black and White Rivers draining from the Zoige wetland. We find that POM was dominated by terrestrial organic matter including high‐molecular‐weight (HMW) lipids, branched glycerol dialkyl glycerol tetraethers, and lignin phenols. However, fluvial POM was rich in HMW lipids and poor in lignin phenols compared to the catchment soils, possibly due to hydrodynamic sorting and dissolution processes. While lignin phenol concentrations were higher in the wet season, HMW lipid concentrations were lower. Additionally, lignin phenols increased with total suspended solids, while HMW lipids decrease. These contrasts imply an enhanced input of lignin‐rich particles from soil surface layers in the wet season, diluting HMW lipids.Compared with that in other rivers around the world with a higher forest coverage in the catchment, POM in the Black and White Rivers draining grass‐dominated wetlands had a much higher ratio of HMW fatty acids to lignin phenols. Our results represent a benchmark study highlighting compositional characteristics of fluvial POM exported from the Zoige wetland and the divergent behavior of molecular components during fluvial transfer. Such information is vital for assessing future changes in the Zoige wetland, given its high vulnerability to climatic and land use changes. |
| WOS关键词 | Environmental Sciences ; Geosciences, Multidisciplinary |
| WOS研究方向 | DIALKYL GLYCEROL TETRAETHERS ; TERRESTRIAL CARBON TRANSFER ; AMAZON-RIVER ; MULTIMOLECULAR TRACERS ; SEDIMENTARY CARBON ; WATER-COLUMN ; FATTY-ACIDS ; LIPIDS ; LIGNIN ; SOILS |
| 语种 | 英语 |
| WOS记录号 | WOS:000490596100001 |
| 源URL | [http://ir.yic.ac.cn/handle/133337/40051]  |
| 专题 | 个人在本单位外知识产出 |
| 通讯作者 | Feng Xiaojuan |
| 作者单位 | 1.College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China 2.Department of Earth Sciences, Utrecht University, Utrecht, Netherlands 3.State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China 4.State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing, China |
| 推荐引用方式 GB/T 7714 | Dai Guohua,Zhu Erxiong,Liu Zongguang,et al. Compositional characteristics of fluvial particulate organic matter exported from the world’s largest alpine wetland[J]. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,2019,124:2709-2727. |
| APA | Dai Guohua.,Zhu Erxiong.,Liu Zongguang.,Wang Yiyun.,Zhu Shanshan.,...&Feng Xiaojuan.(2019).Compositional characteristics of fluvial particulate organic matter exported from the world’s largest alpine wetland.JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,124,2709-2727. |
| MLA | Dai Guohua,et al."Compositional characteristics of fluvial particulate organic matter exported from the world’s largest alpine wetland".JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 124(2019):2709-2727. |
入库方式： OAI收割
来源：烟台海岸带研究所
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