The Influence of Plant Species and Pretreatment on the 14 C Age of Carex -Dominated Peat Plants of a Peat Core From Jinchuan Mire, Ne China
Bibliographic Data
| ID | 9245756 |
|---|---|
| Authors | Satabdi Misra, Sneha Kashyap, Chun-Yen Chou (0000-0001-6226-0391), Tingyi Chang, Hong-Chun Li (0000-0001-9614-7119), Xiaoyan Ning (0009-0008-9798-1189), Jing-Jing Sun, Jie Wang (0000-0003-3564-6808), Meixun Zhao (0000-0001-9450-6448) |
| Year | 2024 |
| Volume | 66 |
| Issue | 5 |
| Pages | 937-957 |
| Publication date | 2024-10-01 |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Radiocarbon (JOURNAL) |
| Journal identifiers | ISSN: 0033-8222 • E-ISSN: 1945-5755 |
| Publisher | Cambridge University Press (CUP) (PUBLISHER) |
| DOI | 10.1017/rdc.2023.112 |
| OpenAlex | W4390298799 |
| Language | EN |
| Citations received | 1 |
| References cited | 66 |
The comparisons among 126 14 C dates of Carex samples including separated leaf and root parts with acid (A)-treatment and acid-base-acid (ABA)-treatment, and 48 published 14 C dates of bulk peat plants on a 92-cm core from Jinchuan Mire in NE China, indicate old carbon influence (OCI) on the 14 C dates. The OCI varies with plant species, pretreatment and peat depth. In vascular peat plants such as Carex , humin fractions (remains after ABA treatment) and humic acids are representative of the original plant precursor, while fulvic acids are regarded as the secondary mobile product which should be removed for 14 C dating. ABA- treatment removes both fulvic acids and humic acids, whereas A-treatment gets rid of only fulvic acids. Carex roots uptake more dissolved CO 2 in peat water. Carex leaves may use more CO 2 (involving degassing CO 2 ) above the peat surface. By removing humic acids throughout ABA treatment, the OCI may vary differently over depth (time). ABA treatment cannot eliminate the fixed OCI in humin fractions of vascular peat plants, instead, this treatment may enhance OCI by removing humic acid which may represent the true age of the plants. In addition, Bacon model results on this core could not show rapid changes in accumulation rate
Biology · Botany · Carbon fibers · Carex · Fulvic acid · Humic acid · Humin · Mire · Peat · Sphagnum · Chemistry · Coastal wetland ecosystem dynamics · Geology and Paleoclimatology Research · Peatlands and Wetlands Ecology · Ecology · Environmental Chemistry · Organic Chemistry
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| Citations per year | 0.5 |
|---|---|
| Citation span | 2024 - 2024 (1) |
| Highly cited | No |