干旱区研究

干旱区研究 ›› 2012, Vol. 29 ›› Issue (3): 425-431.

• 生物资源 • 上一篇    下一篇

天山北坡4种栽培杨树的功能性状分析

徐庆华1, 臧润国1, 谢怀慈2, 白志强3, 郭仲军3, 赵玲4   

    1. 中国林业科学研究院森林生态环境与保护研究所 国家林业局森林生态环境重点实验室,北京　100091；
    2.  新疆林业科学研究院 森林生态研究所,新疆 乌鲁木齐　830000；
    3. 内蒙古巴彦淖尔市林业科学研究所,内蒙古　015000；
    4.  新疆林业规划设计院,新疆 乌鲁木齐　830001
  • 收稿日期:2011-03-10 修回日期:2011-07-19 出版日期:2012-05-15 发布日期:2012-05-30
  • 通讯作者: 臧润国.E-mail:zangrung@caf.ac.cn
  • 作者简介:徐庆华（1969-），男，山东平邑人，博士后，主要从事林木栽培生态方面研究.E-mail:xqh0719@126.com
  • 基金资助:

    林业公益性行业科研专项（200704016）；中央级公益性科研院所基本科研业务费专项资金（CAFRIF200716，CAFYBB2007040）

Analysis on Plant Functional Traits of Populus Species in the Tianshan Mountains

 XU  Qing-Hua1, ZANG  Run-Guo1, XIE  Huai-Ci2, BAI  Zhi-Qiang3, GUO  Zhong-Jun3, ZHAO  Ling4   

    1. Institute of Forest Ecology and Environment Conservation Research, Chinese Academy of Forestry; Key Laboratory 
      of Forest Ecology and Environment, State Forestry Administration, Beijing 100091, China;
    2.  Institute of Forest Ecology, Xinjiang Academy of Forestry, Urumqi 830000, China;
    3.  Bayannur Institute of Forestry, Bayannur 015000, Inner Mongolia, China;
    4. Xinjiang Institute of Forestry Planning and Designing, Urumqi 830001, China
  • Received:2011-03-10 Revised:2011-07-19 Online:2012-05-15 Published:2012-05-30

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摘要： 植物功能性状可以用来推断植物生活史策略，反映生态系统功能。为了研究天山北坡4种栽培杨树适应环境的生态策略差异，对其主要功能性状进行比较分析。结果表明，4种杨树的叶片大小、叶片厚度、叶干物质含量、茎皮厚度、木材密度和根、茎、叶全N，P，K含量均差异显著；但4种杨树间比叶面积差异不显著；新疆杨单叶面积和干物质量最大，胡杨叶片厚度和木材密度最大，钻天杨茎皮厚度最大；4种杨树的叶片N含量均显著高于茎和根，茎和根的N和P含量差异均不显著，除胡杨外，其他3种杨树叶片P含量均显著高于茎和根，K含量在4种杨树的根、茎、叶器官中表现不一致；钻天杨根、茎、叶的N，P，K养分含量都相对较高，俄罗斯杨的根、茎、叶的N，P，K养分含量都相对较低。4种杨树功能性状不同反映了植物对环境的适应性差异。

关键词: 杨树, 功能性状, 生活史, 生态策略, 天山北坡, 新疆

Abstract: Plant functional traits can help us to deduce plant life history strategies and enhance our understanding to ecosystem functions. In order to study the ecological strategies of adapting environment of 4 Populus species in north slope of the Tianshan Mountains, the differences in functional traits of leaves, stems and roots among Populus alba, P. nigra, P. russkii and P. euphratica were researched. The results show that the leaf size, leaf thickness, leaf dry matter content, stem tegument thickness, wood density and nutrition content of organs were significantly different among the 4 species, but the difference of specific leaf area was not significantly. Among the 4 species, both leaf area and leaf dry matter content of P. alba were the highest, both leaf thickness and wood density of P. euphratica　were the highest, and stem tegument thickness of P. nigra was the highest. Content of N in leaves of the 4 species was higher than that in stems and roots, the difference of N and P contents between stems and roots was not significant, contents of K in leaves, stems and roots of the 4 species were quite different; except P. euphratica, content of P in leaves was higher than that in stems and roots; contents of N, P and K in P. nigra were the highest, but those in P. russkii were the lowest. Variation of the functional traits of the 4 Populus species reflected their adaptation to environment.

Key words: Populus species, plant functional trait, life history, ecological strategies, north slope of the Tianshan Mountains, Xinjiang