Stoichiometric shifts in surface soils over broad geographical scales: evidence from China's grasslands
文献类型：期刊论文
| 作者 | Yang, Yuanhe1,2 ; Fang, Jingyun1,2; Ji, Chengjun1,2; Datta, Arindam3; Li, Pin1,2; Ma, Wenhong4; Mohammat, Anwar5; Shen, Haihua; Hu, Huifeng; Knapp, Benjamin O.
|
| 刊名 | GLOBAL ECOLOGY AND BIOGEOGRAPHY
 |
| 出版日期 | 2014 |
| 卷号 | 23期号:8页码:947-955 |
| 关键词 | Carbon-nitrogen-phosphorus interactions carbon:nitrogen:phosphorus ratio ecological stoichiometry grassland ecosystems soil inventory stoichiometric flexibility |
| ISSN号 | 1466-822X |
| DOI | 10.1111/geb.12175 |
| 文献子类 | Article |
| 英文摘要 | Aim The identification of stoichiometric flexibility is crucial for understanding carbon-nitrogen-phosphorus (C-N-P) interactions and ecosystem dynamics under a changing environment. However, current evidence of stoichiometric flexibility mainly comes from manipulation experiments, with little evidence from large-scale observations. Location Alpine and temperate grasslands across northern China. Methods Using soil profiles derived from a historical national soil inventory and a contemporary regional soil survey across China's grasslands, we examined temporal changes in topsoil C:N:P ratios over recent decades. Results Topsoil C: N ratios of five major grassland types exhibited some flexibility but did not show significant changes over the sampling interval. Non-significant changes in topsoil C: N ratios were observed both in alpine grasslands on the Tibetan Plateau and in temperate grasslands on the Inner Mongolian Plateau. Consistent with the relatively stable C: N ratios, the slope of the soil C-N stoichiometric relationship did not differ significantly between the two sampling periods. Soil N: P ratios in the surface layer increased significantly over the sampling interval, however, with an overall increase of 0.60 (95% confidence interval 0.58-0.62). A larger increase in soil N: P ratio was found in temperate grasslands on the Inner Mongolian Plateau than in alpine grasslands on the Tibetan Plateau. Moreover, the slope of the soil N-P stoichiometric relationship in these grassland ecosystems became steeper over the sampling interval. Main conclusions These results demonstrate the stability of topsoil C: N stoichiometry but variability in N: P stoichiometry over broad geographical scales, highlighting that soil C and N are tightly coupled, but N and P tend to be decoupled under a changing environment. |
| 学科主题 | Ecology ; Geography, Physical |
| 出版地 | HOBOKEN |
| 电子版国际标准刊号 | 1466-8238 |
| WOS关键词 | ELEVATED CO2 ; NITROGEN DEPOSITION ; INORGANIC CARBON ; PHOSPHORUS ; ECOSYSTEMS ; LIMITATION ; DECOMPOSITION ; PATTERNS ; TOPSOIL ; WATER |
| WOS研究方向 | Environmental Sciences & Ecology ; Physical Geography |
| 语种 | 英语 |
| WOS记录号 | WOS:000339110400012 |
| 出版者 | WILEY |
| 资助机构 | National Basic Research Program of China on Global Change [2014CB954001, 2010CB950600] ; National Natural Science Foundation of China [31322011, 41371213, 31021001] ; Thousand Young Talents Program |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/27302]  |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Vegetat & Environm Change, Inst Bot, Beijing 100093, Peoples R China 2.Peking Univ, Dept Ecol, Beijing 100871, Peoples R China 3.Peking Univ, Key Lab Earth Surface Proc, Minist Educ, Beijing 100871, Peoples R China 4.Univ Aberdeen, Inst Biol & Environm Sci, Aberdeen AB24 3UU, Scotland 5.Inner Mongolia Univ, Coll Life Sci, Hohhot 010021, Peoples R China 6.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Urumqi 830011, Peoples R China 7.Knapp, Benjamin O.] Univ Missouri, Dept Forestry, Columbia, MO 65211 USA |
| 推荐引用方式 GB/T 7714 | Yang, Yuanhe,Fang, Jingyun,Ji, Chengjun,et al. Stoichiometric shifts in surface soils over broad geographical scales: evidence from China's grasslands[J]. GLOBAL ECOLOGY AND BIOGEOGRAPHY,2014,23(8):947-955. |
| APA | Yang, Yuanhe.,Fang, Jingyun.,Ji, Chengjun.,Datta, Arindam.,Li, Pin.,...&Smith, Pete.(2014).Stoichiometric shifts in surface soils over broad geographical scales: evidence from China's grasslands.GLOBAL ECOLOGY AND BIOGEOGRAPHY,23(8),947-955. |
| MLA | Yang, Yuanhe,et al."Stoichiometric shifts in surface soils over broad geographical scales: evidence from China's grasslands".GLOBAL ECOLOGY AND BIOGEOGRAPHY 23.8(2014):947-955. |
入库方式： OAI收割
来源：植物研究所
浏览0
下载0
收藏0
其他版本
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。