Grazing intensity impacts soil carbon and nitrogen storage of continental steppe
文献类型：期刊论文
| 作者 | He, N. P.1,2; Zhang, Y. H.2,3; Yu, Q.2 ; Chen, Q. S.2; Pan, Q. M.2; Zhang, G. M.2; Han, X. G.2
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| 刊名 | ECOSPHERE
 |
| 出版日期 | 2011 |
| 卷号 | 2期号:1 |
| 关键词 | Carbon Carbon Sequestration Carbon Storage Grassland Grazing Nitrogen Soil Fraction |
| 文献子类 | Article |
| 英文摘要 | Recent studies have underscored the importance of grasslands as potential carbon (C) sinks. We performed a grazing experiment with seven stocking rates (SR0, SR1.5, SR3.0, SR4.5, SR6.0, SR7.5, and SR9.0 for 0, 1.5, 3.0, 4.5, 6.0, 7.5, and 9.0 sheep ha(-1), respectively) to investigate the effect of increasing grazing pressure on soil C and nitrogen (N) storage in the temperate grasslands of northern China. The results revealed that C and N storage in both 0-10 cm and 10-30 cm soil layers decreased linearly with increasing stocking rates. Carbon storage in the 0-10 cm soil layer was significantly higher in lightly grazed grasslands than in heavily grazed grasslands after a 5-yr grazing treatment. Our findings suggest an underlying transformation from soil C sequestration under light grazing to C loss under heavy grazing, and that the threshold for this transformation is 4.5 sheep ha(-1) (grazing period from June to September). Results confirmed that grasslands used for grazing in northern China have the capacity to sequester C in the soil under appropriate grazing pressure, but that they lose C under heavy grazing. Therefore, appropriate grazer densities will promote soil C sequestration in the grasslands of northern China. |
| 语种 | 英语 |
| WOS记录号 | WOS:000208836100007 |
| 出版者 | ECOLOGICAL SOC AMER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/68143]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | He, N. P. |
| 作者单位 | 1.Chinese Acad Sci, Synth Res Ctr Chinese Ecosyst Res Network, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Chinese Acad Sci, State Key Lab Vegetat & Environm Change, Inst Bot, Beijing 100093, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | He, N. P.,Zhang, Y. H.,Yu, Q.,et al. Grazing intensity impacts soil carbon and nitrogen storage of continental steppe[J]. ECOSPHERE,2011,2(1). |
| APA | He, N. P..,Zhang, Y. H..,Yu, Q..,Chen, Q. S..,Pan, Q. M..,...&Han, X. G..(2011).Grazing intensity impacts soil carbon and nitrogen storage of continental steppe.ECOSPHERE,2(1). |
| MLA | He, N. P.,et al."Grazing intensity impacts soil carbon and nitrogen storage of continental steppe".ECOSPHERE 2.1(2011). |
入库方式： OAI收割
来源：地理科学与资源研究所
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