沙冬青(Ammopiptanthus mongolicus)叶性状对环境因子的响应

董雪; 辛智鸣; 李永华; 郝玉光; 纪署光; 段瑞兵; 张冉浩; 黄雅茹

doi:10.7522/j.issn.1000-694X.2019.00017

中国沙漠 >

2019 , Vol. 39 >Issue 6: 126 - 134

DOI: https://doi.org/10.7522/j.issn.1000-694X.2019.00017

沙冬青(Ammopiptanthus mongolicus)叶性状对环境因子的响应

董雪 ,
辛智鸣 ,
李永华 ,
郝玉光 ,
纪署光 ,
段瑞兵 ,
张冉浩 ,
黄雅茹

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1. 中国林业科学研究院沙漠林业实验中心, 北京 100091;
2. 中国林业科学研究院磴口荒漠生态系统国家定位观测研究站, 北京 100091;
3. 中国林业科学研究院荒漠化研究所, 北京 100091

董雪(1986-),女,内蒙古巴彦淖尔人,工程师,硕士,主要从事荒漠化治理研究。E-mail:dongxue98765@126.com

收稿日期: 2019-01-17

修回日期: 2019-03-14

网络出版日期: 2019-11-14

基金资助

中央级公益性科研院所基本科研业务费专项（CAFYBB2018QA007）；国家自然科学基金项目（41671049，31600581）

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Responses of Ammopiptanthus mongolicus Leaf Traits to Environmental Factors

Dong Xue ,
Xin Zhiming ,
Li Yonghua ,
Hao Yugang ,
Ji Shuguang ,
Duan Ruibing ,
Zhang Ranhao ,
Huang Yaru

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1. Experimental Center of Dorestry, Chinese Academy of Forestry, Beijing 100091, China;
2. Dengkou Desert Ecosystem National Observation Research Station, Chinese Academy of Forestry, Beijing 100091, China;
3. Institute of Desertification Studies, Chinese Academy of Forestry, Beijing 100091, China

Received date: 2019-01-17

Revised date: 2019-03-14

Online published: 2019-11-14

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摘要

叶性状通过表型可塑性和植物功能特性反映物种对环境因子的适应策略，从而反映植物的生长状况和生态系统的稳定程度。对内蒙古、宁夏、甘肃的14个县（市、区）的天然种群沙冬青（Ammopiptanthus mongolicus）叶性状进行测定分析，研究了不同分布区种群间沙冬青叶性状的种内变异、叶性状间的相关关系及叶性状对环境因子的响应。结果表明：（1）沙冬青各叶性状种内变异较大，变异系数5.28%~28.82%，14个分布区种群间沙冬青叶片长度、叶片宽度、叶片厚度、叶面积、比叶面积、叶干物质含量、叶全氮含量、叶全磷含量、叶C：N、叶C：P和叶N：P差异性均显著（P<0.05），而叶片长宽比和叶有机碳含量差异不显著（P>0.05）。（2）沙冬青叶性状间表现出一定的相关关系，有36对叶性状间存在显著的相关性，叶全氮含量、叶干物质含量和叶片宽度均与多个叶性状指标的相关系数较高，沙冬青通过叶性状间的相互调节与权衡更好地适应恶劣环境。（3）不同自然分布区的种群中沙冬青叶性状受环境条件的影响显著，不同环境因子对沙冬青各叶性状的贡献显著不同。区域尺度上降雨量与温度的局部差异，使叶片长度、叶片宽度、叶面积、比叶面积、叶干物质含量、叶全氮含量呈现出纬度格局，对沙冬青叶性状影响最大的气象因子依次是年均降水量、年均温度和年日照时数。

关键词： 沙冬青(Ammopiptanthus mongolicus); 叶性状; 环境因子; 适应策略

本文引用格式

董雪 , 辛智鸣 , 李永华 , 郝玉光 , 纪署光 , 段瑞兵 , 张冉浩 , 黄雅茹 . 沙冬青(Ammopiptanthus mongolicus)叶性状对环境因子的响应[J]. 中国沙漠, 2019 , 39(6) : 126 -134 . DOI: 10.7522/j.issn.1000-694X.2019.00017

Abstract

Leaf traits including phenotypic plasticity and plant functional characteristics can directly or indirectly reflect the adaptation strategy of plants to the environment, reflecting plant growth and ecosystem stability. We measured leaf traits of Ammopiptanthus mongolicus in 14 counties of Inner Mongolia, Ningxia and Gansu Provinces. Thus,the relationship between the leaf traits of A. mongolicus and environmental factors could elucidate the relationship between intraspecific variations and environmental factors. The results showed that (1) The leaf traits of A. mongolicus showed significant intraspecific variations,and the variation coefficient was between 5.28% and 28.82%. The leaf length, leaf width, leaf thickness, leaf area, specific leaf area, leaf dry matter content, leaf nitrogen content, leaf phosphorus content, leaf C:N, leaf C:P and leaf N:P of A. mongolicus in the fourteen plots were significantly different (P<0.05), but the difference in leaf length to width ratio and leaf organic carbon content were not significant (P>0.05). (2) There was a significant correlation between 36 pairs of leaf traits. Leaf total nitrogen content, leaf dry matter content and leaf width all had a high correlation coefficient with many leaf traits. A. mongolicus adapted to the changes in the environment by regulating various functional traits of its leaves and forming optimum functional combinations of the traits. (3) The contributions of different environmental factors to leaf traits differed significantly. This pattern of variation in leaf traits responded to different environmental conditions. There were significant correlations between the leaf trait and the latitude (P<0.05).The leaf length, leaf width, leaf area, specific leaf area, leaf dry matter content and leaf nitrogen content of A. mongolicus exhibited a latitude distribution pattern. The combined effect of changing precipitation and temperature conditions along latitude and strong local effects could contribute to the formation of these patterns.The meteorological factors have the greatest influence on leaf traits of A. mongolicus. The order from big to small is the average annual precipitation, the average annual temperature and the annual sunshine duration.

Key words： Ammopiptanthus mongolicus; leaf trait; environmental factor; adaptation strategy

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