Thirty-year variations of above-ground net primary production and precipitation-use efficiency of an alpine meadow in the north-eastern Qinghai-Tibetan Plateau
文献类型：期刊论文
| 作者 | Li, H.1,2; Zhang, F.1,2; Li, Y.1,2; Zhao, X.1,2; Cao, G.1,2 |
| 刊名 | grass and forage science
 |
| 出版日期 | 2016-06-01 |
| 卷号 | 71期号:2页码:208-218 |
| 关键词 | climate change aggregated growing season degree days growing season length community transition classification and regression trees |
| 英文摘要 | above-ground net primary production (anpp) and precipitation-use efficiency (pue) are key factors that can clarify the response of grassland ecosystem carbon and water cycles to ongoing climate change. the variations of anpp and pue were analysed based on long-term insitu observations of a species-rich alpine meadow in the north-eastern qinghai-tibetan plateau from 1981 to 2010. anpp and pue increased markedly over time. anpp was significantly controlled by post-growing season length (from 1 september to the end of growing season in the previous year, r-2=031, p<001). regression trees showed that air temperature during october of the previous year played a predominant role in anpp annual variations. results indicated that a strong thermal-lagging effect on anpp variations was present in the alpine meadow ecosystem. anpp variations were undetectable during wet, normal and dry years (p=025). our finding supported the hypothesis that temporal site-specific anpp variations were less regulated by a single factor. the temporal pue declined linearly with increasing annual precipitation, and the slope was obviously steeper than that of spatial patterns. more anpp variability in an alpine meadow under warming conditions might occur via community transition in the north-eastern qinghai-tibetan plateau. |
| WOS标题词 | science & technology ; life sciences & biomedicine |
| 类目[WOS] | agronomy |
| 研究领域[WOS] | agriculture |
| 关键词[WOS] | rain-use efficiency ; species composition ; mesic grassland ; plant biomass ; united-states ; climate ; community ; dynamics ; gradient ; tundra |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000376001900004 |
| 源URL | [http://ir.nwipb.ac.cn/handle/363003/5747]  |
| 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, Northwest Inst Plateau Biol, Xinning St 23, Xining 810001, Qinghai, Peoples R China 2.Chinese Acad Sci, Key Lab Adaptat & Evolut Plateau Biota, Xining 810001, Qinghai, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, H.,Zhang, F.,Li, Y.,et al. Thirty-year variations of above-ground net primary production and precipitation-use efficiency of an alpine meadow in the north-eastern Qinghai-Tibetan Plateau[J]. grass and forage science,2016,71(2):208-218. |
| APA | Li, H.,Zhang, F.,Li, Y.,Zhao, X.,&Cao, G..(2016).Thirty-year variations of above-ground net primary production and precipitation-use efficiency of an alpine meadow in the north-eastern Qinghai-Tibetan Plateau.grass and forage science,71(2),208-218. |
| MLA | Li, H.,et al."Thirty-year variations of above-ground net primary production and precipitation-use efficiency of an alpine meadow in the north-eastern Qinghai-Tibetan Plateau".grass and forage science 71.2(2016):208-218. |
入库方式： OAI收割
来源：西北高原生物研究所
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