| 吕梁山区几种乔灌草植物的化学计量特征 |
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| 引用本文： | 曹远博,王百田,魏婷婷,迟璐,陈志豪.吕梁山区几种乔灌草植物的化学计量特征[J].水土保持通报,2014(5):290-294. |
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| 作者姓名： | 曹远博 王百田 魏婷婷 迟璐 陈志豪 |
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| 作者单位： | 北京林业大学 水土保持学院, 北京 100083;北京林业大学 水土保持学院, 北京 100083;水土保持与荒漠化防治教育部重点实验室, 北京 100083;中国矿业大学(北京), 北京 100083;北京林业大学 水土保持学院, 北京 100083;北京林业大学 水土保持学院, 北京 100083 |
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| 基金项目： | 中国科学院战略先导专项"暖温带落叶阔叶混交林区域山西中部森林固碳现状、速率和潜力研究"(XDAO5050203-04-01) |
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| 摘 要： | 对元素的计量特征正确的解读能够促进人们对生态系统内C,N,P循环规律的理解。通过样地调查和样品采集,测定了吕梁山区几种乔灌草植物以及枯枝落叶的碳、氮、磷含量,系统分析了几种元素的计量规律。结果表明,相同树种不同器官的相同元素含量存在差异性,不同树种相同器官的相同元素含量存在差异性,说明植物的遗传特性和各器官不同的功能决定着元素计量的差异性;灌木各器官的相同元素存在极显著相关(p<0.01),说明植物体各器官作为一个整体共同作用决定着元素的计量特征,草本与灌木计量特征相似;C,N,P,C/N,C/P,N/P与地区的环境因素相关:坡度与C含量和N/P存在极显著负相关(p<0.01),郁闭度仅与C/P存在显著相关(p<0.05),海拔因素只与N/P不存在显著相关,说明环境与植物体的能量和物质流动影响着元素的计量特征。
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| 关 键 词： | 吕梁山区 计量特征 乔灌草植物 |
| 收稿时间： | 2013/9/15 0:00:00 |
| 修稿时间： | 2013/11/18 0:00:00 |
Stoichiometric Characteristics of Several Plants of Arbor, Shrub and Grass in Lüliang Mountainous Region |
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| CAO Yuan-bo,WANG Bai-tian,WEI Ting-ting,CHI Lu and CHEN Zhi-hao.Stoichiometric Characteristics of Several Plants of Arbor, Shrub and Grass in Lüliang Mountainous Region[J].Bulletin of Soil and Water Conservation,2014(5):290-294. |
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| Authors: | CAO Yuan-bo WANG Bai-tian WEI Ting-ting CHI Lu and CHEN Zhi-hao |
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| Institution: | School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China;School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China;Key Laboratory of Soil and Water Conservation and Desertification Combating, Ministry of Education, Beijing 100083, China;China University of Mining and Technology(Beijing), Beijing 100083, China;School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China;School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China |
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| Abstract: | The correct interpretation of stoichiometric characteristics can promote the understanding of C, N, P circulating law within the ecosystem. Through sample plot survey and sample collection, the C, N and P content of several arbor, shrub, grass and litter were determined, and the element stoichiometric characteristics of several plants were systematically analyzed in Lüliang mountainous region. The results showed there were differences between the same element content of different organs of the same species, and also between the same element content of same organ of the different species. It indicated that the plant genetic characteristics and different function of organs determines the difference of stoichiometry. The same element of shrub's organs were significantly correlated, indicating that organs of plant individual decided collectively the stoichiometry. The stoichiometry of grasses was similar to shrubs. C, N, P content and the C/N, C/P, N/P radio were significantly related to local environmental factors. Slope had a significantly negative relation on the content of C and N/P. Crown density was only significantly correlated to C/P ratio, and altitude factor was significantly correlated to all measurement indexes except of N/P, indicating that environment, energy and material flows of plant had an influence on stoichiometry. |
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| Keywords: | Lü liang mountainous region stoichiometric characteristics plants of arbor shrub and grass |
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