Temperature sensitivity of decomposition of soil organic matter fractions increases with their turnover time
文献类型：期刊论文
| 作者 | Jia, Yufu4; Kuzyakov, Yakov2,5,6,7; Wang, Guoan; Tan, Wenbing8; Zhu, Biao1; Feng, Xiaojuan4
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| 刊名 | LAND DEGRADATION & DEVELOPMENT
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| 出版日期 | 2020 |
| 卷号 | 31期号:5页码:632-645 |
| 关键词 | C-14 isotope global warming SOC decomposition soil quality temperature sensitivity (Q(10)) |
| ISSN号 | 1085-3278 |
| DOI | 10.1002/ldr.3477 |
| 文献子类 | Article |
| 英文摘要 | Soil organic carbon (SOC) is an indicator of soil fertility. Global warming accelerates SOC decomposition, consequently, resulting in land degradation. Characterization of the response of SOC decomposition to temperature is important for predicting land development. A simulation model based on temperature sensitivity (Q(10)) of SOC decomposition has been used to predict SOC response to climate warming. However, uncertain Q(10) leads to substantial uncertainties in the predictions. A major uncertainty comes from the interference of rainfall. To minimize this interference, we sampled surface (0-5 cm) soils along an isohyet across a temperature gradient in the Qinghai-Tibetan Plateau. The Q(10) of bulk soil and the four soil fractions, such as light fraction (LightF), particulate organic matter (POM), hydrolyzable fraction (HydrolysF), and recalcitrant fraction (RecalcitF), were studied by C-14 dating. Turnover time follows the order: LightF < POM < bulk soil < HydrolysF < RecalcitF. The Q(10) follows the order: LightF (1.0) = POM (1.0) < HydrolysF (3.63) < bulk soil (5.93) < RecalcitF (7.46). This indicates that stable fractions are much more sensitive to temperature than labile fractions. We also suggest that protection mechanisms rather than molecular composition regulate SOC turnover. A new concept 'protection sensitivity' of SOC decomposition was proposed. Protection sensitivity relates to protection type and primarily controls Q(10) variation. A simulation model based on the Q(10) of individual fractions predicted SOC change and land development in the Qinghai-Tibetan Plateau in the next 100 years much effectively as compared to simulations based on one-pool model (Q(10) = 2) or bulk soil (Q(10) = 5.93). |
| 学科主题 | Environmental Sciences ; Soil Science |
| 出版地 | HOBOKEN |
| 电子版国际标准刊号 | 1099-145X |
| WOS关键词 | CARBON DECOMPOSITION ; PERMAFROST CARBON ; RADIOCARBON ; CLIMATE ; STABILIZATION ; RESPIRATION ; INCUBATION ; LABILE ; POOLS ; MECHANISMS |
| WOS研究方向 | Environmental Sciences & Ecology ; Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:000505586100001 |
| 出版者 | WILEY |
| 资助机构 | National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41772171] ; RUDN University program 5-100 ; Government Program of Competitive Growth of Kazan Federal University |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/21959]  |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.Chinese Res Inst Environm Sci, State Key Lab Environm Criteria & Risk Assessment, Beijing 100012, Peoples R China 2.Kazan Fed Univ, Inst Environm Sci, Kazan 420049, Russia 3.Peking Univ, Coll Urban & Environm Sci, Dept Ecol, Beijing 100871, Peoples R China 4.China Agr Univ, Coll Resources & Environm Sci, Dept Environm Sci & Engn, Beijing Key Lab Farmland Soil Pollut Prevent & Re, Beijing 100193, Peoples R China 5.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100193, Peoples R China 6.Univ Gottingen, Dept Soil Sci Temperate Ecosyst, D-37077 Gottingen, Germany 7.Univ Gottingen, Dept Agr Soil Sci, D-37077 Gottingen, Germany 8.RUDN Univ, Agrotechnol Inst, Moscow 117198, Russia |
| 推荐引用方式 GB/T 7714 | Jia, Yufu,Kuzyakov, Yakov,Wang, Guoan,et al. Temperature sensitivity of decomposition of soil organic matter fractions increases with their turnover time[J]. LAND DEGRADATION & DEVELOPMENT,2020,31(5):632-645. |
| APA | Jia, Yufu,Kuzyakov, Yakov,Wang, Guoan,Tan, Wenbing,Zhu, Biao,&Feng, Xiaojuan.(2020).Temperature sensitivity of decomposition of soil organic matter fractions increases with their turnover time.LAND DEGRADATION & DEVELOPMENT,31(5),632-645. |
| MLA | Jia, Yufu,et al."Temperature sensitivity of decomposition of soil organic matter fractions increases with their turnover time".LAND DEGRADATION & DEVELOPMENT 31.5(2020):632-645. |
入库方式： OAI收割
来源：植物研究所
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