Effects of Grazing Regimes on Plant Traits and Soil Nutrients in an Alpine Steppe, Northern Tibetan Plateau
文献类型：期刊论文
| 作者 | Sun, Jian1; Wang, Xiaodan2 ; Cheng, Genwei2; Wu, Jianbo2; Hong, Jiangtao2; Niu, Shuli1
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| 刊名 | PLOS ONE
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| 出版日期 | 2014-09-30 |
| 卷号 | 9期号:9页码:e108821 |
| ISSN号 | 1932-6203 |
| 关键词 | BELOW-GROUND BIOMASS |
| 通讯作者 | Wang, Xiaodan |
| 英文摘要 | Understanding the impact of grazing intensity on grassland production and soil fertility is of fundamental importance for grassland conservation and management. We thus compared three types of alpine steppe management by studying vegetation traits and soil properties in response to three levels of grazing pressure: permanent grazing (M1), seasonal grazing (M2), and grazing exclusion (M3) in the alpine steppe in Xainza County, Tibetan Plateau. The results showed that community biomass allocation did not support the isometric hypothesis under different grassland management types. Plants in M1 had less aboveground biomass but more belowground biomass in the top soil layer than those in M2 and M3, which was largely due to that root/shoot ratios of dominant plants in M1 were far greater than those in M2 and M3. The interramet distance and the tiller size of the dominant clonal plants were greater in M3 than in M1 and M2, while the resprouting from rhizome buds did not differ significantly among the three greezing regimes. Both soil bulk density and soil available nitrogen in M3 were greater than in M1 at the 15-30 cm soil depth (P = 0.05). Soil organic carbon and soil total nitrogen were greater in M3 than in M1 and M2 (P = 0.05). We conclude that the isometric hypothesis is not supported in this study and fencing is a helpful grassland management in terms of plant growth and soil nutrient retention in alpine steppe. The extreme cold, scarce precipitation and short growing period may be the causation of the unique plant and soil responses to different management regimes. |
| WOS标题词 | Science & Technology |
| 类目[WOS] | Multidisciplinary Sciences |
| 研究领域[WOS] | Science & Technology - Other Topics |
| 关键词[WOS] | BELOW-GROUND BIOMASS ; INNER-MONGOLIA ; CARBON STORAGE ; ABOVEGROUND BIOMASS ; PHYSICAL-PROPERTIES ; GLOBAL PATTERNS ; ORGANIC-CARBON ; LOESS PLATEAU ; ALLOCATION ; GRASSLAND |
| 收录类别 | SCI |
| 原文出处 | http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0108821 |
| 语种 | 英语 |
| WOS记录号 | WOS:000343671700171 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/9934]  |
| 专题 | 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 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 |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modelling, Synth Res Ctr,Chinese Ecosyst Res Network, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Mt Hazard & Environm, Key Lab Mt Surface Proc & Ecoregulat, Chengdu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Jian,Wang, Xiaodan,Cheng, Genwei,et al. Effects of Grazing Regimes on Plant Traits and Soil Nutrients in an Alpine Steppe, Northern Tibetan Plateau[J]. PLOS ONE,2014,9(9):e108821. |
| APA | Sun, Jian,Wang, Xiaodan,Cheng, Genwei,Wu, Jianbo,Hong, Jiangtao,&Niu, Shuli.(2014).Effects of Grazing Regimes on Plant Traits and Soil Nutrients in an Alpine Steppe, Northern Tibetan Plateau.PLOS ONE,9(9),e108821. |
| MLA | Sun, Jian,et al."Effects of Grazing Regimes on Plant Traits and Soil Nutrients in an Alpine Steppe, Northern Tibetan Plateau".PLOS ONE 9.9(2014):e108821. |
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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