Decomposition of Organic Carbon in Fine Soil Particles Is Likely More Sensitive to Warming than in Coarse Particles: An Incubation Study with Temperate Grassland and Forest Soils in Northern China
文献类型：期刊论文
| 作者 | Ding, Fan1; Huang, Yao ; Sun, Wenjuan; Jiang, Guangfu1; Chen, Yue1
|
| 刊名 | PLOS ONE
 |
| 出版日期 | 2014 |
| 卷号 | 9期号:4 |
| ISSN号 | 1932-6203 |
| DOI | 10.1371/journal.pone.0095348 |
| 文献子类 | Article |
| 英文摘要 | It is widely recognized that global warming promotes soil organic carbon (SOC) decomposition, and soils thus emit more CO2 into the atmosphere because of the warming; however, the response of SOC decomposition to this warming in different soil textures is unclear. This lack of knowledge limits our projection of SOC turnover and CO2 emission from soils after future warming. To investigate the CO2 emission from soils with different textures, we conducted a 107-day incubation experiment. The soils were sampled from temperate forest and grassland in northern China. The incubation was conducted over three short-term cycles of changing temperature from 5 degrees C to 30 degrees C, with an interval of 5 degrees C. Our results indicated that CO2 emissions from sand (>50 mu m), silt (2-50 mu m), and clay (<2 mu m) particles increased exponentially with increasing temperature. The sand fractions emitted more CO2 (CO2-C per unit fraction-C) than the silt and clay fractions in both forest and grassland soils. The temperature sensitivity of the CO2 emission from soil particles, which is expressed as Q(10), decreased in the order clay>silt>sand. Our study also found that nitrogen availability in the soil facilitated the temperature dependence of SOC decomposition. A further analysis of the incubation data indicated a power-law decrease of Q(10) with increasing temperature. Our results suggested that the decomposition of organic carbon in fine-textured soils that are rich in clay or silt could be more sensitive to warming than those in coarse sandy soils and that SOC might be more vulnerable in boreal and temperate regions than in subtropical and tropical regions under future warming. |
| 学科主题 | Multidisciplinary Sciences |
| 出版地 | SAN FRANCISCO |
| WOS关键词 | LAND-USE ; MATTER DECOMPOSITION ; MICROBIAL BIOMASS ; SIZE FRACTIONS ; WATER-CONTENT ; RESPIRATION ; CLIMATE ; DEPENDENCE ; STABILIZATION ; TEXTURE |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000336922600172 |
| 出版者 | PUBLIC LIBRARY SCIENCE |
| 资助机构 | National Natural Science Foundation of China [41075108] ; Ministry of Science and Technology of China [2010CB950604] ; CAS Strategic Priority Research Program [XDA05050507] |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/27354]  |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ding, Fan,Huang, Yao,Sun, Wenjuan,et al. Decomposition of Organic Carbon in Fine Soil Particles Is Likely More Sensitive to Warming than in Coarse Particles: An Incubation Study with Temperate Grassland and Forest Soils in Northern China[J]. PLOS ONE,2014,9(4). |
| APA | Ding, Fan,Huang, Yao,Sun, Wenjuan,Jiang, Guangfu,&Chen, Yue.(2014).Decomposition of Organic Carbon in Fine Soil Particles Is Likely More Sensitive to Warming than in Coarse Particles: An Incubation Study with Temperate Grassland and Forest Soils in Northern China.PLOS ONE,9(4). |
| MLA | Ding, Fan,et al."Decomposition of Organic Carbon in Fine Soil Particles Is Likely More Sensitive to Warming than in Coarse Particles: An Incubation Study with Temperate Grassland and Forest Soils in Northern China".PLOS ONE 9.4(2014). |
入库方式： OAI收割
来源：植物研究所
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