Effects of litter quality and climate change along an elevation gradient on litter mass loss in an alpine meadow ecosystem on the Tibetan plateau
文献类型：期刊论文
| 作者 | Xu, Guangping2,3; Hu, Yigang2,3; Wang, Shiping1,2; Zhang, Zhenhua2,3; Chang, Xiaofeng2,3; Duan, Jichuang2,3; Luo, Caiyun2,3; Chao, Zengguo2,3; Su, Ailing2,3; Lin, Qiaoyan2,3 |
| 刊名 | plant ecology
 |
| 出版日期 | 2010-08-01 |
| 卷号 | 209期号:2页码:257-268 |
| 关键词 | Litter quality Mass loss Soil temperature Soil moisture Elevation gradient Alpine meadow |
| ISSN号 | 1385-0237 |
| 中文摘要 | knowledge of the response of litter mass loss to climate warming and litter quality in alpine ecosystems is still sparse. here, we conducted a 507-day litter decomposition experiment along an elevation gradient from 3200 to 3800 m using different litter types to determine the influences of litter quality and climate change on the elemental mass losses and on the temperature sensitivity of litter mass losses (annual percentage decomposition (%) per 1a degrees c temperature difference). mass losses of c, nitrogen (n), phosphorus (p), potassium (k), sodium (na), calcium (ca), and magnesium (mg) decreased with an increase in elevation. in general, n and na concentrations in litter and ratios of c:n and lignin:n were the best predictors of c mass losses. a higher n concentration and c:n ratio in litter caused greater c mass losses, but higher lignin:n ratio in litter resulted in lower c mass losses. litter decomposition occurred in a two-stage process. carbon mass loss in litter was mainly limited by soil temperature in the first growing season of the decomposition period, whereas n concentration and ratios of c:p and n:p limited carbon mass loss in the remaining litter during the second growing season of the decomposition period. soil moisture appeared not to affect litter mass loss and the temperature sensitivity of litter mass loss of grass litter was greater than that of shrub litter in the alpine region. |
| 英文摘要 | knowledge of the response of litter mass loss to climate warming and litter quality in alpine ecosystems is still sparse. here, we conducted a 507-day litter decomposition experiment along an elevation gradient from 3200 to 3800 m using different litter types to determine the influences of litter quality and climate change on the elemental mass losses and on the temperature sensitivity of litter mass losses (annual percentage decomposition (%) per 1a degrees c temperature difference). mass losses of c, nitrogen (n), phosphorus (p), potassium (k), sodium (na), calcium (ca), and magnesium (mg) decreased with an increase in elevation. in general, n and na concentrations in litter and ratios of c:n and lignin:n were the best predictors of c mass losses. a higher n concentration and c:n ratio in litter caused greater c mass losses, but higher lignin:n ratio in litter resulted in lower c mass losses. litter decomposition occurred in a two-stage process. carbon mass loss in litter was mainly limited by soil temperature in the first growing season of the decomposition period, whereas n concentration and ratios of c:p and n:p limited carbon mass loss in the remaining litter during the second growing season of the decomposition period. soil moisture appeared not to affect litter mass loss and the temperature sensitivity of litter mass loss of grass litter was greater than that of shrub litter in the alpine region. |
| WOS标题词 | science & technology ; life sciences & biomedicine |
| 类目[WOS] | plant sciences ; ecology ; forestry |
| 研究领域[WOS] | plant sciences ; environmental sciences & ecology ; forestry |
| 关键词[WOS] | organic-matter decomposition ; leaf-litter ; temperature-dependence ; lignin control ; needle litter ; forest litter ; ice cores ; nitrogen ; rates ; sensitivity |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000279479500007 |
| 公开日期 | 2011-12-13 |
| 源URL | [http://ir.nwipb.ac.cn//handle/363003/1666]  |
| 专题 | 西北高原生物研究所_中国科学院西北高原生物研究所 |
| 作者单位 | 1.Chinese Acad Sci, Inst Tibetan Plateau Res, Beijing 100085, Peoples R China 2.Chinese Acad Sci, NW Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining 810008, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 4.Natl Inst Agroenvironm Sci, Tsukuba, Ibaraki 3058604, Japan |
| 推荐引用方式 GB/T 7714 | Xu, Guangping,Hu, Yigang,Wang, Shiping,et al. Effects of litter quality and climate change along an elevation gradient on litter mass loss in an alpine meadow ecosystem on the Tibetan plateau[J]. plant ecology,2010,209(2):257-268. |
| APA | Xu, Guangping.,Hu, Yigang.,Wang, Shiping.,Zhang, Zhenhua.,Chang, Xiaofeng.,...&Du, Mingyuan.(2010).Effects of litter quality and climate change along an elevation gradient on litter mass loss in an alpine meadow ecosystem on the Tibetan plateau.plant ecology,209(2),257-268. |
| MLA | Xu, Guangping,et al."Effects of litter quality and climate change along an elevation gradient on litter mass loss in an alpine meadow ecosystem on the Tibetan plateau".plant ecology 209.2(2010):257-268. |
入库方式： OAI收割
来源：西北高原生物研究所
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