Enrichment of stable carbon and nitrogen isotopes of plant populations and plateau pikas along altitudes
文献类型：期刊论文
| 作者 | Yi, X. F.; Yang, Y. Q. |
| 刊名 | journal of animal and feed sciences
 |
| 出版日期 | 2006 |
| 卷号 | 15期号:4页码:661-667 |
| 关键词 | stable carbon isotope stable nitrogen isotope plateau pikas altitudinal gradients Qinghai-Tibet Plateau |
| 合作状况 | 其它 |
| 中文摘要 | stable carbon and nitrogen isotope ratios were measured in plant populations and plateau pikas to determine enrichment in stable isotopes of three alpine meadow ecosystems at different elevations in the qinghai-tibet plateau. the results indicated that stable carbon isotope signatures of plant populations at the three locations showed significant variations, delta c-13 of plant populations showed an enrichment of 0.86 parts per thousand per 1000 in over the linear proportion of the altitudinal response, while stable nitrogen isotopes showed no apparent difference. the stable nitrogen isotopes of plateau pikas became significantly isotopically heavier along altitudinal gradients and showed an enrichment of 3.17 parts per thousand/km. stable carbon isotopes showed no significance, however, and the enrichment of 0.448 parts per thousand/km. delta c-13 and delta n-15 in plateau pikas were not significantly correlated. there appeared to be segregation between the metabolism of stable carbon and nitrogen isotopes of plateau pikas. variances in metabolic rate at lower water availability and temperatures are presumed to be the main cause of enrichment of stable nitrogen isotopes along altitudinal gradients. attention should be paid to construct trophic positions and to trace food chain information based oil an isotopic enrichment model. |
| 英文摘要 | stable carbon and nitrogen isotope ratios were measured in plant populations and plateau pikas to determine enrichment in stable isotopes of three alpine meadow ecosystems at different elevations in the qinghai-tibet plateau. the results indicated that stable carbon isotope signatures of plant populations at the three locations showed significant variations, delta c-13 of plant populations showed an enrichment of 0.86 parts per thousand per 1000 in over the linear proportion of the altitudinal response, while stable nitrogen isotopes showed no apparent difference. the stable nitrogen isotopes of plateau pikas became significantly isotopically heavier along altitudinal gradients and showed an enrichment of 3.17 parts per thousand/km. stable carbon isotopes showed no significance, however, and the enrichment of 0.448 parts per thousand/km. delta c-13 and delta n-15 in plateau pikas were not significantly correlated. there appeared to be segregation between the metabolism of stable carbon and nitrogen isotopes of plateau pikas. variances in metabolic rate at lower water availability and temperatures are presumed to be the main cause of enrichment of stable nitrogen isotopes along altitudinal gradients. attention should be paid to construct trophic positions and to trace food chain information based oil an isotopic enrichment model. |
| WOS标题词 | science & technology ; life sciences & biomedicine |
| 学科主题 | 农业科学 |
| 类目[WOS] | agriculture, dairy & animal science |
| 研究领域[WOS] | agriculture |
| 关键词[WOS] | delta-c-13 ; photosynthesis ; discrimination ; climate ; ratios ; n-15 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000243138200013 |
| 公开日期 | 2009-12-08 |
| 源URL | [http://ir.nwipb.ac.cn/handle/363003/1303]  |
| 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.Henan Univ Sci & Technol, Coll Agr, Luoyang 471003, Peoples R China 2.Chinese Acad Sci, NW Inst Plateau Biol, Xining 810001, Qinghai, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yi, X. F.,Yang, Y. Q.. Enrichment of stable carbon and nitrogen isotopes of plant populations and plateau pikas along altitudes[J]. journal of animal and feed sciences,2006,15(4):661-667. |
| APA | Yi, X. F.,&Yang, Y. Q..(2006).Enrichment of stable carbon and nitrogen isotopes of plant populations and plateau pikas along altitudes.journal of animal and feed sciences,15(4),661-667. |
| MLA | Yi, X. F.,et al."Enrichment of stable carbon and nitrogen isotopes of plant populations and plateau pikas along altitudes".journal of animal and feed sciences 15.4(2006):661-667. |
入库方式： OAI收割
来源：西北高原生物研究所
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