干旱区生态环境知识资源中心(Arid): Altitudinal trends in delta~(13)C value, stomatal density and nitrogen content of Pinus tabuliformis needles on the southern slope of the middle Qinling Mountains, China

Arid

	Altitudinal trends in delta~(13)C value, stomatal density and nitrogen content of Pinus tabuliformis needles on the southern slope of the middle Qinling Mountains, China
	Liu Xianzhao; Gao Changchun; Su Qing; Zhang Yong; Song Yan
来源期刊	Journal of Mountain Science
ISSN	1672-6316
出版年	2016
卷号	13 期号:6 页码:1066-1077
英文摘要	In this study, a coniferous tree species (Pinus tabuliformis Carr.) was investigated at a moderate-altitude mountainous terrain on the southern slope of the middle Qinling Mountains (QLM) to detect the trends in carbon isotope ratio (delta~(13)C), leaf nitrogen content (LNC) and stomatal density (SD) with altitude variation in north-subtropical humid mountain climate zone of China. The results showed that LNC and SD both significantly increased linearly along the altitudinal gradient ranging from 1000 to 2200 m, whereas leaf delta~(13)C exhibited a significantly negative correlation with the altitude. Such a correlation pattern differs obviously from that obtained in offshore low-altitude humid environment or inland high-altitude semi-arid environment, suggesting that the pattern of increasing delta~(13)C with the altitude cannot be generalized. The negative correlation between delta~(13)C and altitude might be attributed mainly to the strengthening of carbon isotope fractionation in plants caused by increasing precipitation with altitude. Furthermore, there was a remarkable negative correlation between leaf delta~(13)C and LNC. One possible reason was that increasing precipitation that operates to increase isotopic discrimination with altitude overtook the LNC in determining the sign of leaf delta~(13)C. The significant negative correlation between leaf delta~(13)C and SD over altitudes was also found in the present study, indicating that increases in SD with altitude would reduce, rather than enhance plant delta~(13)C values.
英文关键词	Carbon isotope ratio Nitrogen content Stomatal density Altitudinal variation Qinling Mountains
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Science & Technology - Other Topics
CSCD记录号	CSCD:5722119
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335656
作者单位	Liu Xianzhao, College of Architecture and Urban Planning, Hunan University of Science and Technology, State Key Laboratory of Soil and Sustainable Agriculture, Xiangtan, Hunan 411201, China.; Gao Changchun, College of Architecture and Urban Planning, Hunan University of Science and Technology, Xiangtan, Hunan 411201, China.; Su Qing, College of Life Science, Hunan University of Science and Technology, Xiangtan, Hunan 411201, China.; Zhang Yong, Institute of Soil Science, Chinese Academy of Sciences, State Key Laboratory of Soil and Sustainable Agriculture, Nanjing, Jiangsu 210008, China.; Song Yan, Institute of Soil Science, Chinese Academy of Sciences, State Key Laboratory of Soil and Sustainable Agriculture, Nanjing, Jiangsu 210008, China.
推荐引用方式 GB/T 7714	Liu Xianzhao,Gao Changchun,Su Qing,et al. Altitudinal trends in delta~(13)C value, stomatal density and nitrogen content of Pinus tabuliformis needles on the southern slope of the middle Qinling Mountains, China[J],2016,13(6):1066-1077.
APA	Liu Xianzhao,Gao Changchun,Su Qing,Zhang Yong,&Song Yan.(2016).Altitudinal trends in delta~(13)C value, stomatal density and nitrogen content of Pinus tabuliformis needles on the southern slope of the middle Qinling Mountains, China.Journal of Mountain Science,13(6),1066-1077.
MLA	Liu Xianzhao,et al."Altitudinal trends in delta~(13)C value, stomatal density and nitrogen content of Pinus tabuliformis needles on the southern slope of the middle Qinling Mountains, China".Journal of Mountain Science 13.6(2016):1066-1077.