Five-year warming does not change soil organic carbon stock but alters its chemical composition in an alpine peatland
文献类型：期刊论文
| 作者 | Qiu, Jingcong1; Song, Minghua2; Wang, Chunmei1; Dou, Xiaomin1; Liu, Fangfang1; Wang, Jiaxin1; Zhu, Chenying1; Wang, Shiqi1 |
| 刊名 | PEDOSPHERE
 |
| 出版日期 | 2023-10-01 |
| 卷号 | 33期号:5页码:776-787 |
| ISSN号 | 1002-0160 |
| 关键词 | functional gene nuclear magnetic resonance simulated global warming soil carbon components soil enzymes soil microbial diversity |
| DOI | 10.1016/j.pedsph.2023.03.021 |
| 通讯作者 | Wang, Chunmei(wangcm@bjfu.edu.cn) |
| 英文摘要 | Climate warming may promote soil organic carbon (SOC) decomposition and alter SOC stocks in terrestrial ecosystems, which would in tur n affect climate warming. We manipulated a warming experiment using open-top chambers to investigate the effect of warming on SOC stock and chemical composition in an alpine peatland in Zoige on the easter n Tibetan Plateau, China. Results showed that 5 years of warming soil temperatures enhanced ecosystem respiration during the growing season, promoted above-and belowground plant biomass, but did not alter the SOC stock. However, labile O-alkyl C and relatively recalcitrant aromatic C contents decreased, and alkyl C content increased. Warming also increased the amount of SOC stored in the silt-clay fraction (< 0.053 mm), but this was offset by warming-induced decreases in the SOC stored within micro-and macroaggregates (0.053-0.25 and > 0.25 mm, respectively). These changes in labile and recalcitrant C were largely associated with war ming-induced increases in soil microbial biomass C, fungal diversity, enzyme activity, and functional gene abundance related to the decomposition of labile and recalcitrant C compounds. The war ming-induced accumulation of SOC stored in the silt-clay fraction could increase SOC persistence in alpine peatland ecosystems. Our findings suggest that mechanisms mediated by soil microbes account for the changes in SOC chemical composition and SOC in different aggregate size fractions, which is of great significance when evaluating SOC stability under climate warming conditions. |
| WOS关键词 | ECOSYSTEM RESPIRATION ; DECOMPOSITION ; COMMUNITY ; FOREST ; SEQUESTRATION ; TEMPERATURE ; RESPONSES ; TURNOVER ; TUNDRA |
| 资助项目 | National Natural Sci-ence Foundation of China[41971024] ; National Natural Sci-ence Foundation of China[41373069] |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| 出版者 | SCIENCE PRESS |
| WOS记录号 | WOS:001141202300001 |
| 资助机构 | National Natural Sci-ence Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/201900]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Wang, Chunmei |
| 作者单位 | 1.Beijing Forestry Univ, Coll Environm Sci & Engn, Beijing 100083, Peoples R China 2.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qiu, Jingcong,Song, Minghua,Wang, Chunmei,et al. Five-year warming does not change soil organic carbon stock but alters its chemical composition in an alpine peatland[J]. PEDOSPHERE,2023,33(5):776-787. |
| APA | Qiu, Jingcong.,Song, Minghua.,Wang, Chunmei.,Dou, Xiaomin.,Liu, Fangfang.,...&Wang, Shiqi.(2023).Five-year warming does not change soil organic carbon stock but alters its chemical composition in an alpine peatland.PEDOSPHERE,33(5),776-787. |
| MLA | Qiu, Jingcong,et al."Five-year warming does not change soil organic carbon stock but alters its chemical composition in an alpine peatland".PEDOSPHERE 33.5(2023):776-787. |
入库方式： OAI收割
来源：地理科学与资源研究所
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