Recent strengthening of correlations between tree-ring 13C and 18O in mesic western China: Implications to climatic reconstruction and physiological responses (EI)
文献类型：期刊论文
| 作者 | Liu X. ; An W. ; Leavitt S. W. ; Wang W. ; Xu G. ; Zeng X. ; Qin D. |
| 刊名 | Global and Planetary Change
 |
| 出版日期 | 2014 |
| 卷号 | 113期号:23-33 |
| 英文摘要 | We examined the temporal relationships between stable isotopes of carbon (13C) and oxygen (18O) from annual tree-ring cellulose of Abies georgei on the moist Batang-Litang plateau, western China. Climatic response analysis reveals that tree-ring 13C contains a strong moisture signal, and that 13C was especially influenced by relative humidity and precipitation in May through August during the period 1960-2005. In addition, tree-ring 13C and temperature in May to August are positively correlated because of the high-elevation tree growth sites. Drought is also recorded in tree-ring 13C, reflecting the integrated influences of temperature and moisture on stomatal regulation and photosynthesis. Generally, correlations between 13C and 18O remained positive, but not significant, in most of the investigated period, and this correlation switched to highly significant from 1969 onwards. Changes in the 13C-18O relationship reflect changes in water stress on carbon isotopic discrimination, suggesting an increase in stomatal control of photosynthesis in recent decades, which is consistent with the overall drying trend in the region. Spatial correlation maps confirm that during the past century the response of tree-ring 13C to temperature and precipitation differs before and after 1969. Using previously reported 18O results and new 13C results on the same samples, we determined that the climatic signal recorded in tree-ring 18O is more stable than that of 13C. Analysis of temporal changes in the 13C-18O correlations indicates that dominant processes and the controlling factors on tree-ring 13C potentially shift over the long term under temporal fluctuations of dry-wet spells, especially under recent global warming, and stomatal control of photosynthesis may adjust to region-wide changes in climate in this region where water stress on forest was formerly minor. 2013. |
| 收录类别 | EI |
| 公开日期 | 2015-12-24 |
| 源URL | [http://ir.casnw.net/handle/362004/25206]  |
| 专题 | 寒区旱区环境与工程研究所_中科院寒区旱区环境与工程研究所（未分类）_期刊论文 |
| 推荐引用方式 GB/T 7714 | Liu X.,An W.,Leavitt S. W.,et al. Recent strengthening of correlations between tree-ring 13C and 18O in mesic western China: Implications to climatic reconstruction and physiological responses (EI)[J]. Global and Planetary Change,2014,113(23-33). |
| APA | Liu X..,An W..,Leavitt S. W..,Wang W..,Xu G..,...&Qin D..(2014).Recent strengthening of correlations between tree-ring 13C and 18O in mesic western China: Implications to climatic reconstruction and physiological responses (EI).Global and Planetary Change,113(23-33). |
| MLA | Liu X.,et al."Recent strengthening of correlations between tree-ring 13C and 18O in mesic western China: Implications to climatic reconstruction and physiological responses (EI)".Global and Planetary Change 113.23-33(2014). |
入库方式： OAI收割
来源：寒区旱区环境与工程研究所
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