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| Effect of grazing exclusion on the temperature sensitivity of soil net nitrogen mineralization in the Inner Mongolian grasslands | |
| Liu, Yuan1; Wang, Changhui2; Xu, Li; He, Nianpeng1,3 | |
| 2020 | |
| Source Publication | EUROPEAN JOURNAL OF SOIL BIOLOGY
 |
| ISSN | 1164-5563 |
| Volume | 97 |
| Abstract | Grazing exclusion (GE) is an efficient management practice that prevents grassland degradation. The temperature sensitivity (Q(10)) of soil net nitrogen (N) mineralization (N-min) is an important parameter of N cycles, and it directly influences the feedback between the primary productivity of grassland ecosystems and climate warming. However, information remains limited about how GE affects the Q(10) of N-min in N-limited grasslands. In this study, we conducted a laboratory incubation experiment at six temperatures (-10, 0, 5, 15, 25, and 35 degrees C) and three soil moisture contents (15%, 25%, and 35%) for 35 days by using intact soil cores from three different GE periods grassland (0, 4 and 24 years). The results showed that long-term GE decreased the Q(10) of Nmin, which was highest in GE0 (2.62), followed by GE4 (2.36) and GE24 (2.42). In addition, Q(10) declined in 15% soil moisture content under all three GE treatments. Furthermore, activation energy (E-a) was negatively correlated with the substrate quality index (Q) in all three GE grasslands. These results support the carbon quality-temperature (CQT) hypothesis, showing that is can be applied to soil N mineralization in grasslands after long-term GE. This study demonstrated that GE potentially reduces the sensitivity of N-min to increasing temperature under global warming scenarios, which might help prevent N losses in these N-limited grasslands. |
| Keyword | Grazing exclusion Soil net N mineralization Temperature sensitivity Activation energy CQT hypothesis |
| Subject Area | Ecology ; Soil Science |
| DOI | 10.1016/j.ejsobi.2020.103171 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | ORGANIC-MATTER DECOMPOSITION ; CARBON MINERALIZATION ; ALTITUDINAL GRADIENT ; LITTER QUALITY ; ALPINE MEADOW ; LOESS PLATEAU ; STEPPE ; LAND ; PATTERNS ; STORAGE |
| WOS Research Area | Environmental Sciences & Ecology ; Agriculture |
| WOS ID | WOS:000528019700007 |
| Publisher | ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER |
| Subtype | Article |
| Publication Place | ISSY-LES-MOULINEAUX |
| EISSN | 1778-3615 |
| Funding Organization | National Key Research and Development Program of China [2017YFC0503904] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31870437, 31872690, 41573063] |
| Corresponding Author Email | xuli@igsnrr.ac.cn |
| OA | hybrid |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ibcas.ac.cn/handle/2S10CLM1/21795 |
| Collection | 植被与环境变化国家重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 4.Northeast Normal Univ, Key Lab Vegetat Ecol, Minist Educ, Changchun 130024, Peoples R China |
| Recommended Citation GB/T 7714 | Liu, Yuan,Wang, Changhui,Xu, Li,et al. Effect of grazing exclusion on the temperature sensitivity of soil net nitrogen mineralization in the Inner Mongolian grasslands[J]. EUROPEAN JOURNAL OF SOIL BIOLOGY,2020,97. |
| APA | Liu, Yuan,Wang, Changhui,Xu, Li,&He, Nianpeng.(2020).Effect of grazing exclusion on the temperature sensitivity of soil net nitrogen mineralization in the Inner Mongolian grasslands.EUROPEAN JOURNAL OF SOIL BIOLOGY,97. |
| MLA | Liu, Yuan,et al."Effect of grazing exclusion on the temperature sensitivity of soil net nitrogen mineralization in the Inner Mongolian grasslands".EUROPEAN JOURNAL OF SOIL BIOLOGY 97(2020). |
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| File Name/Size | DocType | Version | Access | License | ||
| 1-s2.0-S116455631930（873KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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