Depth-dependent drivers of soil microbial necromass carbon across Tibetan alpine grasslands | |
He, Mei; Fang, Kai4; Chen, Leiyi; Feng, Xuehui4; Qin, Shuqi4; Kou, Dan1; He, Hongbo2; Liang, Chao2; Yang, Yuanhe4 | |
刊名 | GLOBAL CHANGE BIOLOGY |
2022 | |
卷号 | 28期号:3页码:936-949 |
关键词 | carbon cycle carbon-climate feedback deep soil microbial residue mineral protection plant carbon input |
ISSN号 | 1354-1013 |
DOI | 10.1111/gcb.15969 |
文献子类 | Article |
英文摘要 | Microbial necromass carbon (C) has been considered an important contributor to persistent soil C pool. However, there still lacks large-scale systematic observations on microbial necromass C in different soil layers, particularly for alpine ecosystems. Besides, it is still unclear whether the relative importance of biotic and abiotic variables such as plant C input and mineral properties in regulating microbial necromass C would change with soil depth. Based on the combination of large-scale sampling along a similar to 2200 km transect across Tibetan alpine grasslands and biomarker analysis, together with a global data synthesis across grassland ecosystems, we observed a relatively low proportion of microbial-derived C in Tibetan alpine grasslands compared to global grasslands (topsoil: 45.4% vs. 58.1%; subsoil: 41.7% vs. 53.7%). We also found that major determinants of microbial necromass C depended on soil depth. In topsoil, both plant C input and mineral protection exerted dominant effects on microbial necromass C. However, in subsoil, the physico-chemical protection provided by soil clay particles, iron-aluminum oxides, and exchangeable calcium dominantly facilitated the preservation of microbial necromass C. The differential drivers over microbial necromass C between soil depths should be considered in Earth system models for accurately forecasting soil C dynamics and its potential feedback to global warming. |
学科主题 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
电子版国际标准刊号 | 1365-2486 |
出版地 | HOBOKEN |
WOS关键词 | ORGANIC-MATTER ; AMINO-SUGARS ; LITTER DECOMPOSITION ; ROOT DISTRIBUTIONS ; MURAMIC ACID ; PLANT INPUTS ; STABILIZATION ; COMMUNITIES ; TURNOVER ; PATTERNS |
WOS研究方向 | Science Citation Index Expanded (SCI-EXPANDED) |
语种 | 英语 |
出版者 | WILEY |
WOS记录号 | WOS:000719061300001 |
资助机构 | National Natural Science Foundation of China [31825006, 31988102, 91837312] ; Second Tibetan Plateau Scientific Expedition and Research (STEP) [2019QZKK0106] ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences [QYZDB-SSW--SMC049] |
内容类型 | 期刊论文 |
源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/28692] |
专题 | 植被与环境变化国家重点实验室 |
作者单位 | 1.Univ Chinese Acad Sci, Beijing, Peoples R China 2.Univ Eastern Finland, Dept Environm & Biol Sci, Kuopio, Finland 3.Chinese Acad Sci, Inst Appl Ecol, Shenyang, Peoples R China 4.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China |
推荐引用方式 GB/T 7714 | He, Mei,Fang, Kai,Chen, Leiyi,et al. Depth-dependent drivers of soil microbial necromass carbon across Tibetan alpine grasslands[J]. GLOBAL CHANGE BIOLOGY,2022,28(3):936-949. |
APA | He, Mei.,Fang, Kai.,Chen, Leiyi.,Feng, Xuehui.,Qin, Shuqi.,...&Yang, Yuanhe.(2022).Depth-dependent drivers of soil microbial necromass carbon across Tibetan alpine grasslands.GLOBAL CHANGE BIOLOGY,28(3),936-949. |
MLA | He, Mei,et al."Depth-dependent drivers of soil microbial necromass carbon across Tibetan alpine grasslands".GLOBAL CHANGE BIOLOGY 28.3(2022):936-949. |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论