Long-term changes in the tree radial growth and intrinsic water-use efficiency of Chuanxi spruce (Picea likiangensis var. balfouriana) in southwestern China
文献类型：期刊论文
| 作者 | Wang Yang1,2; Zhang Yong2; Fang Ouya3; Shao Xuemei2 |
| 刊名 | JOURNAL OF GEOGRAPHICAL SCIENCES
 |
| 出版日期 | 2018-06-01 |
| 卷号 | 28期号:6页码:833-844 |
| 关键词 | tree ring basel area increment carbon isotope intrinsic water-use efficiency CO2 fertilization |
| ISSN号 | 1009-637X |
| DOI | 10.1007/s11442-018-1508-7 |
| 通讯作者 | Shao Xuemei(shaoxm@igsnrr.ac.cn) |
| 英文摘要 | Elevated CO2 level in the atmosphere is expected to improve the tree growth rates and intrinsic water-use efficiency (iWUE). Although current results inferring from tree rings found the tree growth decline in water-limited area, it is still unclear whether spruce trees in humid southwestern China benefit from the increasing CO2. In this study, tree-ring width data were used to investigate the tree radial growth rate of Chuanxi spruce (Picea likiangensis var. balfouriana). Moreover, combining with the tree-ring carbon isotope date, we analyzed the physiological responses of Chuanxi spruce to rising CO2 concentrations in the atmosphere (Ca) associated with climatic change in southwestern China. From 1851 to 2009, iWUE of Chuanxi spruce rose by approximately 30.4%, and the ratio of atmospheric CO2 to leaf intercellular CO2 concentration (Ci/Ca) showed no significant trend in the study area. The result suggested that Chuanxi spruce used an active response strategy when Ca was significantly increased. iWUE showed a significant increasing trend in parallel with tree radial growth, indicating that the increasing iWUE resulted in an increase in radial growth. These results suggest that spruce forests in southwestern China have not shown declining trends under increasing Ca and climate change scenarios, in contrast to trees growing in water-limited areas. Therefore, spruce forests benefit from the increasing CO2 in the atmosphere in the humid areas of southwestern China. |
| WOS关键词 | INCREASED ATMOSPHERIC CO2 ; STOMATAL CONDUCTANCE ; TIBETAN PLATEAU ; STABLE-ISOTOPES ; CARBON-DIOXIDE ; CLIMATE-CHANGE ; FOREST ; RESPONSES ; RINGS ; TEMPERATURE |
| 资助项目 | National Basic Research Program of China '973'[2012CB956201] ; Key Program of National Natural Science Foundation of China[41630529] |
| WOS研究方向 | Physical Geography |
| 语种 | 英语 |
| WOS记录号 | WOS:000430098100009 |
| 出版者 | SCIENCE PRESS |
| 资助机构 | National Basic Research Program of China '973' ; Key Program of National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/57374]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Shao Xuemei |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100101, Peoples R China 2.Chinese Acad Sci, Key Lab Land Surface Pattern & Simulat, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 3.Chinese Acad Sci, State Key Lab Vegetat & Environm Change, Inst Bot, Beijing 100093, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang Yang,Zhang Yong,Fang Ouya,et al. Long-term changes in the tree radial growth and intrinsic water-use efficiency of Chuanxi spruce (Picea likiangensis var. balfouriana) in southwestern China[J]. JOURNAL OF GEOGRAPHICAL SCIENCES,2018,28(6):833-844. |
| APA | Wang Yang,Zhang Yong,Fang Ouya,&Shao Xuemei.(2018).Long-term changes in the tree radial growth and intrinsic water-use efficiency of Chuanxi spruce (Picea likiangensis var. balfouriana) in southwestern China.JOURNAL OF GEOGRAPHICAL SCIENCES,28(6),833-844. |
| MLA | Wang Yang,et al."Long-term changes in the tree radial growth and intrinsic water-use efficiency of Chuanxi spruce (Picea likiangensis var. balfouriana) in southwestern China".JOURNAL OF GEOGRAPHICAL SCIENCES 28.6(2018):833-844. |
入库方式： OAI收割
来源：地理科学与资源研究所
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