Spatial and temporal variability of key bio-temperature indicators on the Qinghai-Tibetan Plateau for the period 1961-2013
文献类型：SCI/SSCI论文
| 作者 | Zhao D. S.; Wu, S. H.; Zhang, L; He, HL ; Li, P; Zhang, Y; Zhang, Y; Shi, PL; Yu, GR; Zhang, L
|
| 发表日期 | 2016 |
| 关键词 | climate change Qinghai-Tibetan Plateau bio-temperature trends growing-season climate-change precipitation forest trends china model |
| 英文摘要 | The ecosystems of the Qinghai-Tibetan Plateau (QTP) are highly sensitive to climate change, the effects of which can be expressed through alterations to some key thresholds, including bio-temperature. However, to date, few studies have investigated variations in bio-temperature on the QTP in the context of climate change. To address this, the present study selected the following key indicators of bio-temperature: mean temperature of the warmest month (TWM); mean temperature of the coldest month (TCM); accumulated temperature above 10 degrees C (AT(10)), 5 degrees C (AT(5)), and 0 degrees C (AT(0)); and number of days with daily mean temperature above 10 degrees C (DT10), 5 degrees C (DT5), and 0 degrees C (DT0). These indicators were selected owing to their roles in the growth and distribution of vegetation on the QTP. The trends exhibited by these indicators were examined on basis of the data obtained from 71 observation stations on the QTP from 1961 to 2013. The results demonstrate that both TWM and TCM at the regional scale exhibited significant rising trends over this period, although TCM increased at a considerably faster rate. Spatially, the greatest increases in TWM and TCM were observed in the Qaidam basin desert and Guoluo-Naqu alpine shrub meadow regions. Additionally, AT(10), AT(5), and AT(0) exhibited increasing trends, with AT(0) increasing most rapidly and exhibiting the most significant changes, followed by AT(5) and then AT(10). Similarly, DT0 exhibited a greater overall increase than DT10 and DT5. Spatially, AT and DT exhibited asymmetrical change, i.e. large increases in AT did not correspond to large increases in DT. In general, all the bio-temperature indicators considered indicate pronounced rising trends over this recent five decades. This was likely due to rising air temperatures across the QTP, which have affected the structures and functions of alpine ecosystems. |
| 出处 | International Journal of Climatology |
| 卷 | 36 |
| 期 | 4 |
| 页 | 2083-2092 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 0899-8418 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/43941]  |
| 专题 | 地理科学与资源研究所_生态系统研究网络观测与模拟重点实验室_CERN水分分中心 |
| 推荐引用方式 GB/T 7714 | Zhao D. S.,Wu, S. H.,Zhang, L,et al. Spatial and temporal variability of key bio-temperature indicators on the Qinghai-Tibetan Plateau for the period 1961-2013. 2016. |
入库方式： OAI收割
来源：地理科学与资源研究所
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