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| Compositional Characteristics of Fluvial Particulate Organic Matter Exported From the World's Largest Alpine Wetland | |
Dai, Guohua; Zhu, Erxiong1; Liu, Zongguang1; Wang, Yiyun1; Zhu, Shanshan1; Wang, Simin1; Ma, Tian1; Jia, Juan1; Wang, Xin1; Hou, Shengjie2; Fu, Pingqing1,2; Peterse, Francien3; Feng, Xiaojuan1
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| 2019 | |
| Source Publication | JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
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| ISSN | 2169-8953 |
| Volume | 124Issue:9Pages:2709-2727 |
| Abstract | 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. |
| Keyword | particulate organic matter composition source seasonal variation river Zoige wetland |
| Subject Area | Environmental Sciences ; Geosciences, Multidisciplinary |
| DOI | 10.1029/2019JG005231 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | DIALKYL GLYCEROL TETRAETHERS ; TERRESTRIAL CARBON TRANSFER ; AMAZON-RIVER ; MULTIMOLECULAR TRACERS ; SEDIMENTARY CARBON ; WATER-COLUMN ; FATTY-ACIDS ; LIPIDS ; LIGNIN ; SOILS |
| WOS Research Area | Environmental Sciences & Ecology ; Geology |
| WOS ID | WOS:000490596100001 |
| Publisher | AMER GEOPHYSICAL UNION |
| Subtype | Article |
| Publication Place | WASHINGTON |
| EISSN | 2169-8961 |
| Funding Organization | Chinese National Key Development Program for Basic Research [2017YFC0503902, 2015CB954201] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41503073, 41422304, 41773067] ; International Partnership Program of Chinese Academy of Sciences [151111KYSB20160014] ; China Exchange Program of the Royal Netherlands Academy of Arts and Sciences (KNAW) [530-6CDP17] |
| Corresponding Author Email | xfeng@ibcas.ac.cn |
| OA | Green Published |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ibcas.ac.cn/handle/2S10CLM1/19463 |
| Collection | 植被与环境变化国家重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China 3.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Atmospher Boundary Layer Phys & Atm, Beijing, Peoples R China 4.Univ Utrecht, Dept Earth Sci, Utrecht, Netherlands |
| Recommended Citation 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(9):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(9),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 124.9(2019):2709-2727. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 2019JG005231.pdf（2087KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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