| Interactive global change factors mitigate soil aggregation and carbon change in a semi-arid grassland | |
| Bai, Tongshuo1; Wang, Peng1; Hall, Steven J.2; Wang, Fuwei1; Ye, Chenglong1; Li, Zhen1; Li, Shijie1; Zhou, Luyao1; Qiu, Yunpeng1; Guo, Jiuxin1,3; Guo, Hui1; Wang, Yi4; Hu, Shuijin1,5 | |
| 通讯作者 | Wang, Yi(wangyi@ieecas.cn) ; Hu, Shuijin(shuijin_hu@hotmail.com) |
| 2020-07-07 | |
| 发表期刊 | GLOBAL CHANGE BIOLOGY
 |
| ISSN | 1354-1013 |
| 页码 | 13 |
| 摘要 | The ongoing global change is multi-faceted, but the interactive effects of multiple drivers on the persistence of soil carbon (C) are poorly understood. We examined the effects of warming, reactive nitrogen (N) inputs (12 g N m(-2) year(-1)) and altered precipitation (+ or - 30% ambient) on soil aggregates and mineral-associated C in a 4 year manipulation experiment with a semi-arid grassland on China's Loess Plateau. Our results showed that in the absence of N inputs, precipitation additions significantly enhanced soil aggregation and promoted the coupling between aggregation and both soil fungal biomass and exchangeable Mg2+. However, N inputs negated the promotional effects of increased precipitation, mainly through suppressing fungal growth and altering soil pH and clay-Mg2+-OC bridging. Warming increased C content in the mineral-associated fraction, likely by increasing inputs of root-derived C, and reducing turnover of existing mineral-associated C due to suppression of fungal growth and soil respiration. Together, our results provide new insights into the potential mechanisms through which multiple global change factors control soil C persistence in arid and semi-arid grasslands. These findings suggest that the interactive effects among global change factors should be incorporated to predict the soil C dynamics under future global change scenarios. |
| 关键词 | aggregate stability carbonate global change mineral-associated C N-induced acidification soil respiration |
| DOI | 10.1111/gcb.15220 |
| 关键词[WOS] | ARBUSCULAR MYCORRHIZAL FUNGI ; ORGANIC-MATTER ; NITROGEN DEPOSITION ; CLIMATE-CHANGE ; ELEVATED CO2 ; RESPIRATION ; RESPONSES ; WATER ; DECOMPOSITION ; IMPACTS |
| 收录类别 | SCI ; SCI |
| 语种 | 英语 |
| 资助项目 | National Key R&D Program of China[2017YFC0503902] ; National Natural Science Foundation of China[41671269] |
| WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
| 项目资助者 | National Key R&D Program of China ; National Natural Science Foundation of China |
| WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
| WOS记录号 | WOS:000545786100001 |
| 出版者 | WILEY |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ieecas.cn/handle/361006/15014 |
| 专题 | 生态环境研究室 |
| 通讯作者 | Wang, Yi; Hu, Shuijin |
| 作者单位 | 1.Nanjing Agr Univ, Coll Resources & Environm Sci, Ecosyst Ecol Lab, Nanjing 210095, Peoples R China 2.Iowa State Univ, Dept Ecol Evolut & Organismal Biol, Ames, IA USA 3.Fujian Agr & Forestry Univ, Coll Resources & Environm, Int Magnesium Inst, Fuzhou, Peoples R China 4.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China 5.North Carolina State Univ, Dept Entomol & Plant Pathol, Raleigh, NC USA |
| 推荐引用方式 GB/T 7714 | Bai, Tongshuo,Wang, Peng,Hall, Steven J.,et al. Interactive global change factors mitigate soil aggregation and carbon change in a semi-arid grassland[J]. GLOBAL CHANGE BIOLOGY,2020:13. |
| APA | Bai, Tongshuo.,Wang, Peng.,Hall, Steven J..,Wang, Fuwei.,Ye, Chenglong.,...&Hu, Shuijin.(2020).Interactive global change factors mitigate soil aggregation and carbon change in a semi-arid grassland.GLOBAL CHANGE BIOLOGY,13. |
| MLA | Bai, Tongshuo,et al."Interactive global change factors mitigate soil aggregation and carbon change in a semi-arid grassland".GLOBAL CHANGE BIOLOGY (2020):13. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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