Carbon, nitrogen, and phosphorus storage in alpine grassland ecosystems of Tibet: effects of grazing exclusion
文献类型：期刊论文
| 作者 | Lu, Xuyang1,2 ; Yan, Yan1; Sun, Jian3; Zhang, Xiaoke1; Chen, Youchao1; Wang, Xiaodan1,2; Cheng, Genwei1
|
| 刊名 | ECOLOGY AND EVOLUTION
 |
| 出版日期 | 2015-10-01 |
| 卷号 | 5期号:19页码:4492-4504 |
| 关键词 | Alpine meadow alpine steppe fencing soil organic carbon Tibetan Plateau |
| ISSN号 | 2045-7758 |
| 通讯作者 | Yan, Yan |
| 英文摘要 | In recent decades, alpine grasslands have been seriously degraded on the Tibetan Plateau and grazing exclusion by fencing has been widely adopted to restore degraded grasslands since 2004. To elucidate how alpine grasslands carbon (C), nitrogen (N), and phosphorus (P) storage responds to this management strategy, three types of alpine grassland in nine counties in Tibet were selected to investigate C, N, and P storage in the environment by comparing free grazing (FG) and grazing exclusion (GE) treatments, which had run for 6-8years. The results revealed that there were no significant differences in total ecosystem C, N, and P storage, as well as the C, N, and P stored in both total biomass and soil (0-30cm) fractions between FG and GE grasslands. However, precipitation played a key role in controlling C, N, and P storage and distribution. With grazing exclusion, C and N stored in aboveground biomass significantly increased by 5.7g m(-2) and 0.1g m(-2), respectively, whereas the C and P stored in the soil surface layer (0-15cm) significantly decreased by 862.9g m(-2) and 13.6g m(-2), respectively. Furthermore, the storage of the aboveground biomass C, N, and P was positively correlated with vegetation cover and negatively correlated with the biodiversity index, including Pielou evenness index, Shannon-Wiener diversity index, and Simpson dominance index. The storage of soil surface layer C, N, and P was positively correlated with soil silt content and negatively correlated with soil sand content. Our results demonstrated that grazing exclusion had no impact on total C, N, and P storage, as well as C, N, and P in both total biomass and soil (0-30cm) fractions in the alpine grassland ecosystem. However, grazing exclusion could result in increased aboveground biomass C and N pools and decreased soil surface layer (0-15cm) Cand P pools. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Ecology |
| 研究领域[WOS] | Environmental Sciences & Ecology |
| 关键词[WOS] | NET PRIMARY PRODUCTIVITY ; SOIL C STOCKS ; PRECIPITATION GRADIENT ; SEMIARID RANGELANDS ; SPECIES RICHNESS ; ORGANIC-MATTER ; INNER-MONGOLIA ; GROWING-SEASON ; USE EFFICIENCY ; PLATEAU |
| 收录类别 | SCI |
| 原文出处 | http://onlinelibrary.wiley.com/doi/10.1002/ece3.1732/pdf |
| 语种 | 英语 |
| WOS记录号 | WOS:000362523300023 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/11032]  |
| 专题 | 成都山地灾害与环境研究所_山地灾害与地表过程重点实验室 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Peoples R China 2.Chinese Acad Sci, Xainza Alpine Steppe & Wetland Ecosyst Observat &, Xainza 853100, Peoples R China 3.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lu, Xuyang,Yan, Yan,Sun, Jian,et al. Carbon, nitrogen, and phosphorus storage in alpine grassland ecosystems of Tibet: effects of grazing exclusion[J]. ECOLOGY AND EVOLUTION,2015,5(19):4492-4504. |
| APA | Lu, Xuyang.,Yan, Yan.,Sun, Jian.,Zhang, Xiaoke.,Chen, Youchao.,...&Cheng, Genwei.(2015).Carbon, nitrogen, and phosphorus storage in alpine grassland ecosystems of Tibet: effects of grazing exclusion.ECOLOGY AND EVOLUTION,5(19),4492-4504. |
| MLA | Lu, Xuyang,et al."Carbon, nitrogen, and phosphorus storage in alpine grassland ecosystems of Tibet: effects of grazing exclusion".ECOLOGY AND EVOLUTION 5.19(2015):4492-4504. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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