Responses of alpine grassland to climate warming and permafrost thawing in two basins with different precipitation regimes on the Qinghai-Tibetan Plateau
文献类型：期刊论文
| 作者 | Zhou, Zhaoye1,2; Yi, Shuhua2; Chen, Jianjun2; Ye, Baisheng2; Sheng, Yu3; Wang, Genxu4 ; Ding, Yongjian2
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| 刊名 | ARCTIC ANTARCTIC AND ALPINE RESEARCH
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| 出版日期 | 2015-02-01 |
| 卷号 | 47期号:1页码:125-131 |
| 关键词 | CARBON DYNAMICS SOIL-MOISTURE DEGRADATION ECOSYSTEMS VEGETATION TUNDRA MODEL |
| ISSN号 | 1523-0430 |
| 通讯作者 | Zhou, Zhaoye |
| 英文摘要 | Alpine grassland and permafrost occupy about two thirds and one half of the total area of the Qinghai-Tibetan Plateau (QTP), respectively. Soil water, which can be affected by permafrost thawing and precipitation, is important for vegetation growth in this region. It is therefore vital to consider the effects of both thawing and precipitation when studying the effect of climate warming on alpine grassland on the QTP. In this study, we examined two adjacent basins, one semiarid and the other semihumid, in the northeastern section of the QTP. We used remote sensing data to compare fractional vegetation cover (FVC) and the relationships between FVC and land surface temperature (LST) in different types of frozen ground; the samples were analogous to a chronosequence of climate warming and permafrost thawing. Our analysis produced three significant results: (1) the FVCs of the semihumid basin were significantly greater than those of the semiarid basin for most types of frozen ground (p < 0.05); (2) the changes in FVC along the climate warming and permafrost thawing chronosequence were different in the two basins, with the maximum FVC occurring on the transition permafrost zone in the semiarid basin and on the seasonal frost zone in the semihumid basin; and (3) at the peak of the growing season, only the three warmest types of frozen ground in the semiarid basin had a negative relationship between FVC and LST, suggesting that vegetation growth was limited by water. Therefore, we concluded that the responses of alpine grassland to climate warming in the permafrost regions are complicated by precipitation and permafrost thawing; specifically, grasslands will not necessarily simply degrade as the climate warms, as suggested by previous plotscale studies. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences |
| 类目[WOS] | Environmental Sciences ; Geography, Physical |
| 研究领域[WOS] | Environmental Sciences & Ecology ; Physical Geography |
| 关键词[WOS] | CARBON DYNAMICS ; SOIL-MOISTURE ; DEGRADATION ; ECOSYSTEMS ; VEGETATION ; TUNDRA ; MODEL |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000350219000011 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/9592]  |
| 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 |
| 作者单位 | 1.Lanzhou Univ Technol, Sch Civil Engn, Lanzhou 730050, Peoples R China 2.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China 3.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China 4.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Zhaoye,Yi, Shuhua,Chen, Jianjun,et al. Responses of alpine grassland to climate warming and permafrost thawing in two basins with different precipitation regimes on the Qinghai-Tibetan Plateau[J]. ARCTIC ANTARCTIC AND ALPINE RESEARCH,2015,47(1):125-131. |
| APA | Zhou, Zhaoye.,Yi, Shuhua.,Chen, Jianjun.,Ye, Baisheng.,Sheng, Yu.,...&Ding, Yongjian.(2015).Responses of alpine grassland to climate warming and permafrost thawing in two basins with different precipitation regimes on the Qinghai-Tibetan Plateau.ARCTIC ANTARCTIC AND ALPINE RESEARCH,47(1),125-131. |
| MLA | Zhou, Zhaoye,et al."Responses of alpine grassland to climate warming and permafrost thawing in two basins with different precipitation regimes on the Qinghai-Tibetan Plateau".ARCTIC ANTARCTIC AND ALPINE RESEARCH 47.1(2015):125-131. |
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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