Opposite patterns of soil organic and inorganic carbon along a climate gradient in the alpine steppe of northern Tibetan Plateau
文献类型：期刊论文
| 作者 | Du Chenjun; Gao Yongheng |
| 刊名 | CATENA
 |
| 出版日期 | 2020 |
| 卷号 | 186页码:104366 |
| 关键词 | Arid regions Climate change Vertical distribution Soil carbon content C dynamics |
| ISSN号 | 0341-8162 |
| DOI | 10.1016/j.catena.2019.104366 |
| 产权排序 | 1 |
| 通讯作者 | Gao, Yongheng(gaoyh@cib.cas.cn) |
| 文献子类 | Article |
| 英文摘要 | Both soil organic carbon (SOC) and inorganic carbon (SIC) are important components of soil carbon storage. However, few studies have attempted to estimate the magnitude and patterns of SIC in arid areas. We measured the concentrations of SOC and SIC in alpine steppe grasslands along a climate gradient in the Tibetan Plateau. At all sites, an opposing trend was found in the distribution of SOC compared with SIC. SOC increased with increasing precipitation, while SIC decreased. Within sites, SOC decreased with soil depth, while SIC increased. Among the variables considered, soil total nitrogen (TN) and soil water content explained the most variability in SOC (r(2) = 0.95 for TN, r(2) = 0.93 for soil water content), and soil pH had the highest correlation with SIC (r(2) = 0.90). This finding indicates that SOC is closely related to biological processes, such as biomass input and litter accumulation, while SIC is determined by abiotic factors such as chemical and physical processes of soil formation. SOC and SIC densities showed that the SOC pool comprised 91% of total carbon (TC) storage in these alpine steppe soils. A decrease in SOC density occurred with depth, but this pattern was the opposite for SIC density in all soil profiles. These findings help to characterize the C cycle in the alpine steppe of the Tibetan Plateau. |
| 电子版国际标准刊号 | 1872-6887 |
| WOS关键词 | BELOW-GROUND BIOMASS ; PRECIPITATION GRADIENT ; GRAZING EXCLUSION ; CHINA GRASSLANDS ; NITROGEN ; DYNAMICS ; STORAGE ; TOPSOIL ; MANAGEMENT ; ECOSYSTEM |
| 资助项目 | National Key Research and Development Program of China[2016YFC0501802] ; National Science Foundation of China[41271276] ; Science and Technology Program of Qinghai Province of China[2019-HZ-807] ; Science and Technology Program of Qinghai Province of China[2019-ZJ-910] ; Key Research and Development Program of Sichuan Province of China[2018NZ0048] |
| WOS研究方向 | Geology ; Agriculture ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000509817000006 |
| 出版者 | ELSEVIER |
| 资助机构 | National Key Research and Development Program of China ; National Science Foundation of China ; Science and Technology Program of Qinghai Province of China ; Key Research and Development Program of Sichuan Province of China |
| 源URL | [http://ir.imde.ac.cn/handle/131551/33867]  |
| 专题 | 中国科学院水利部成都山地灾害与环境研究所 |
| 通讯作者 | Gao Yongheng |
| 作者单位 | CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China |
| 推荐引用方式 GB/T 7714 | Du Chenjun,Gao Yongheng. Opposite patterns of soil organic and inorganic carbon along a climate gradient in the alpine steppe of northern Tibetan Plateau[J]. CATENA,2020,186:104366. |
| APA | Du Chenjun,&Gao Yongheng.(2020).Opposite patterns of soil organic and inorganic carbon along a climate gradient in the alpine steppe of northern Tibetan Plateau.CATENA,186,104366. |
| MLA | Du Chenjun,et al."Opposite patterns of soil organic and inorganic carbon along a climate gradient in the alpine steppe of northern Tibetan Plateau".CATENA 186(2020):104366. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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