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[1]朱亮 顾国军 徐振锋 游成铭 牟凌 丁爽 曾欣 吴福忠**.北亚热带常绿阔叶林乔灌草物种的碳氮磷生态化学计量比*[J].应用与环境生物学报,2019,25(06):1-12.[doi:10.19675/j.cnki.1006-687x.2019.02014]
 ZHU Liang,GU Guojun,XU Zhenfeng,et al.Ecological stoichiometric ratio of carbon, nitrogen and phosphorus for tree, shrub and herb species in north subtropical evergreen broad-leaved forest *[J].Chinese Journal of Applied & Environmental Biology,2019,25(06):1-12.[doi:10.19675/j.cnki.1006-687x.2019.02014]
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北亚热带常绿阔叶林乔灌草物种的碳氮磷生态化学计量比*()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
25卷
期数:
2019年06期
页码:
1-12
栏目:
研究论文
出版日期:
2019-12-30

文章信息/Info

Title:
Ecological stoichiometric ratio of carbon, nitrogen and phosphorus for tree, shrub and herb species in north subtropical evergreen broad-leaved forest *
作者:
朱亮1 顾国军2 徐振锋1 游成铭1 牟凌1 丁爽1 曾欣1 吴福忠1**
1四川农业大学生态林业研究所,四川省林业生态工程重点实验室,高山森林生态系统定位研究站 成都 611130
2四川省阿坝藏族羌族自治州川西林业局 理县 623102
Author(s):
ZHU Liang1 GU Guojun2 XU Zhenfeng1 YOU Chengming1 MOU Ling1 DING Shuang1 ZENG Xin1 & WU Fuzhong 1**
1 Long-term Research Station of Alpine Forest Ecosystems, Provincial Key Laboratory of Ecological Forestry Engineering, Institute of Ecology andForestry, Sichuan Agricultural University, Chengdu 611130, China
2 Western Sichuan Forestry Bureau of Ngawa Tibetan and Qiang Autonomous Prefecture, Lixian 623102, China
关键词:
北亚热带常绿阔叶林生活型植物器官养分利用养分限制
Keywords:
north subtropical evergreen broad-leaved forest life form plant organ nutrient utilization nutrient limitation
DOI:
10.19675/j.cnki.1006-687x.2019.02014
摘要:
碳氮磷生态化学计量比是认识植物养分利用与分配的重要指标,一定程度上表征了物种在生态系统中的生存适应策略,但不同生活型的物种(如乔灌草)往往具有较大的差异,且缺乏必要关注。因此,为认识四川盆地北亚热带典型常绿阔叶林中主要乔灌草物种的氮磷利用特征,以9个乔木树种、3个灌木物种和4个草本物种为研究对象,分析不同物种叶、枝、皮、茎和根等器官的碳氮磷含量及生态化学计量特征。结果显示:总体而言,草本植物的氮和磷的含量大于乔木和灌木,但乔木物种的碳氮比、碳磷比和氮磷比均大于灌木和草本,表明乔木植物相较于灌木和草本植物可能具有更加高效的氮磷利用效率;不同器官氮含量表现为叶>枝>皮>根>茎,但磷含量表现为叶>枝>皮>茎>根;碳氮比表现为茎>根>皮>枝>叶,碳磷比表现为茎>皮>根>枝>叶,而氮磷比表现为皮>叶>根>枝>茎。3类生活型植物同一器官的氮和磷含量、碳氮比、碳磷比以及氮磷比均存在较大的差异,其中乔木叶片的氮磷比小于16大于14,灌木和草本植物的叶片的氮磷比均小于14,表明灌木和草本植物受到氮的限制作用可能较大。这些结果意味着该区域林下植物养分利用效率相对较低且受到氮限制作用更为强烈,可为相似常绿阔叶林可持续经营和管理提供理论依据。
Abstract:
Ecological stoichiometric ratios of carbon, nitrogen and phosphorus are the key indicators of nutrient utilization and allocation in plants, which represent the living and adapt ing strategies of species in the ecosystem . However, different plants with different life forms (such as trees, shrubs and herbs) often display various stoichiometry in a ecosystem, showing varied nitrogen and phosphorus utilization characters, but lack of necessary attention Therefore, in order to understand the characteristics of nitrogen and phosphorus utilization of different life forms in the typical evergreen broad-leaved forest, 9 tree species, 3 shrub species and 4 herbs species were selected in north subtropical area of Sichuan Basin. The ecological stoichiometry of carbon, nitrogen and phosphorus were analyzed in leaves, twigs, barks, stems and roots of different species. The results showed that the concentrations of nitrogen and phosphorus of herb s were higher than those of trees and shrubs, but the carbon to nitrogen ratio, carbon to phosphorus ratio and nitrogen to phosphorus ratio of tree species were h igher than those of shrubs and herbs, which showed that tree plants may have higher utilization efficiency of nitrogen and phosphorus than those of shrubs plants and herbs plant s. The concentration of nitrogen in different organs ranked as the order of leaf > twig > bark > root > stem, while the concentration of phosphorus in different organs ranked as the order of leaf > twig > bark > stem > root. The carbon to nitrogen ratio in different organs ranked as the order of stem > root > bark > twig > leaf and the carbon to phosphorus ratio in different organs ranked as the order of stem > bark > root > twig > leaf, while the nitrogen to phosphorus ratio in different organs ranked as the order of bark > leaf > root > twig > stem. The concentration of nitrogen and phosphorus, carbon to nitrogen ratio, carbon to phosphorus ratio and nitrogen to phosphorus ratio in the same organ of three life forms were significantly different, and the nitrogen to phosphorus ratio in the leaves of trees were greater than 14 and less than 16, and the nitrogen to phosphorus ratio in the leaves of shrubs and herb s plants were less than 14, indicating that shrubs and herbs plants may be more restricted by nitrogen. These results indicated that the nutrient utilization efficiency of un derstory plants in this area were relatively lower and more strongly affected by nit rogen limitation, which provide some theoretical basis for sustainable management in similar evergreen broad-leaved forests.

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备注/Memo

备注/Memo:
收稿日期 Received: 2019-02-14 接受日期 Accepted: 2019-03-27
*国家自然科学基金项目(31670526,31622018)和四川省青年科技创新团队项目(2017TD0022)资助
**通讯作者 Corresponding author (E-mail: wufzchina@163.com)
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更新日期/Last Update: 2019-03-28