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| 西部中国沙棘叶片稳定碳同位素组成的空间特征及其气候意义 | |
| 引用本文： | 刘光琇,张威,陈桂琛,章高森,李田,安黎哲.西部中国沙棘叶片稳定碳同位素组成的空间特征及其气候意义[J].中国沙漠,2009,29(5):866-871. |
| 作者姓名： | 刘光琇 张威 陈桂琛 章高森 李田 安黎哲 |
| 作者单位： | 1. 中国科学院,西北高原生物研究所,青海,西宁,810008;中国科学院,寒区旱区环境与工程研究所,沙漠与沙漠化重点实验室,甘肃,兰州,730000 2. 中国科学院,寒区旱区环境与工程研究所,沙漠与沙漠化重点实验室,甘肃,兰州,730000 3. 中国科学院,西北高原生物研究所,青海,西宁,810008 4. 兰州大学,生命科学学院,甘肃,兰州,730000 |
| 基金项目： | 科技部公益性行为(气象)科研专项,国家自然科学基金,中国科学院方向性项目 |
| 摘 要： | 分析了西部中国沙棘（Hippophate rhamnoides sinensis）叶片稳定碳同位素组成特征及其与环境因子之间的关系。结果表明,中国沙棘叶片δ13C值在-30.40‰~-24.91‰之间变化,平均值约为-27.62‰,属于C3植物。随纬度和经度的升高,中国沙棘叶片δ13C值明显升高,而随海拔的升高而降低,具有明显的空间分布特征。中国沙棘叶片δ13C值与温度没有明显的关系,随蒸发量和日照时间的升高而升高,随降水量的升高有降低趋势,具有明显的气候意义。表明中国沙棘具有较高的水分利用效率,水分是控制中国沙棘δ13C值变化或生长的主导因子。 |
| 关 键 词： | 中国沙棘 稳定碳同位素 环境因子 |
| 收稿时间： | 2009-2-10 |
| 修稿时间： | 2009-4-14 |
Spatial Characters and Climate Significances of Stable Carbon Isotope Composition in Hippophate rhamnoides sinensis Leaves in Western China |
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| LIU Guang-xiu,ZHANG Wei,CHEN Gui-chen,ZHANG Gao-sen,LI Tian,AN Li-ze.Spatial Characters and Climate Significances of Stable Carbon Isotope Composition in Hippophate rhamnoides sinensis Leaves in Western China[J].Journal of Desert Research,2009,29(5):866-871. | |
| Authors: | LIU Guang-xiu ZHANG Wei CHEN Gui-chen ZHANG Gao-sen LI Tian AN Li-ze |
| Institution: | 1.Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 810008, China; 2. Key Laboratory of Desert and Desertification, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China; 3.School of Life Science, Lanzhou University, Lanzhou 730000, China |
| Abstract: | Analysis on the relation between stable carbon isotope composition in Hippophate rhamnoides sinensis leaves and environmental factors was conducted in this study. Results showed that the leaf carbon isotope values ranged from -30.40‰ to -24.91‰, averaging -27.62‰, indicating the Hippophate rhamnoides sinensis species belongs to C3 plant. The δ13C values of Hippophate rhamnoides sinensis has obvious spatial distribution characters, increasing with the increase of latitude and longitude, and decreasing with the increase of altitude. The δ13C values of Hippophate rhamnoides sinensis increase with the increase of evaporation and sunshine duration, and tend to decrease with the increase of precipitation, having considerable climate-indicating significance. The results also showed that the Hippophate rhamnoides sinensis has high water use efficiency and water is the main factor controlling its growth and the variation of foliar stable carbon isotope composition. |
| Keywords: | Hippophate rhamnoides sinensis δ13C" target="_blank">13C')" href="#">δ13C environmental factors |
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