疏叶骆驼刺适应盐渍生境的离子分布、吸收和运输特征

doi:10.13287/j.1001-9332.201611.013

应用生态学报 ›› 2016, Vol. 27 ›› Issue (11): 3514-3520.doi: 10.13287/j.1001-9332.201611.013

疏叶骆驼刺适应盐渍生境的离子分布、吸收和运输特征

罗瀚林^1,2,3,4, 曾凡江^1,2,3*, 张波^1,2,3, 刘波^1,2,3, 赵生龙^1,2,3,4, 高欢欢^1,2,3,4

¹中国科学院新疆生态与地理研究所荒漠与绿洲生态国家重点实验室, 乌鲁木齐 830011;
²新疆策勒荒漠草地生态系统国家野外科学观测研究站, 新疆策勒 848300;
³中国科学院干旱区生物地理与生物资源重点实验室, 乌鲁木齐 830011;
⁴中国科学院大学, 北京 100049

收稿日期:2016-04-12 出版日期:2016-11-18 发布日期:2016-11-18
通讯作者: E-mail: zengfj@ms.xjb.ac.cn
作者简介:罗瀚林,男,1990年生,硕士研究生. 主要从事荒漠化防治研究. E-mail: huangmozhixing@163.com
基金资助:
本文由新疆自治区科技支撑计划项目(201433114)、国家基金委-新疆联合基金重点项目(U1203201)和国家自然科学基金项目(41371516)资助

Ion distribution, absorption and translocation characteristics of Alhagi sparsifolia in adaptation to saline habitat.

LUO Han-lin^1,2,3,4, ZENG Fan-jiang^1,2,3*, ZHANG Bo^1,2,3, LIU Bo^1,2,3, ZHAO Sheng-long^1,2,3,4, GAO Huan-huan^1,2,3,4

¹State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Uruiqi 830011, China;
²Cele National Station of Observation and Research for Desert-Grassland Ecosystems, Cele 848300, Xinjiang, China;
³Key Laboratory of Biogeography and Bioresource in Arid Zone, Chinese Academy of Sciences, Uruiqi 830011, China;
⁴University of Chinese Academy of Sciences, Beijing 100049, China

Received:2016-04-12 Online:2016-11-18 Published:2016-11-18
Contact: E-mail: zengfj@ms.xjb.ac.cn
Supported by:
This work was supported by the Key Program for Science and Technology Support Project of Xinjiang Autonomous Region (201433114), the Joint Funds of National Natural Science Foundation-Xinjiang (U1203201) and the National Natural Science Foundation of China (41371516).

摘要/Abstract

摘要： 以塔里木盆地南缘关键物种疏叶骆驼刺为材料,研究了不同盐渍土壤生境(轻度盐渍土、中度盐渍土、重度盐渍土)下其器官间Na⁺、K⁺、Ca²⁺、Mg²⁺的分布、吸收及运输特征,以探讨疏叶骆驼刺对自然盐渍生境的适应特性.结果表明: 在轻度和中度盐渍土生境,Na⁺在各器官中的分布规律为茎≈刺>叶>根,而在重度盐渍土生境,Na⁺分布规律为叶>茎≈刺>根;Ca²⁺和Mg²⁺在疏叶骆驼刺体内的分布规律为叶>刺>茎>根.随着土壤含盐量的增加,疏叶骆驼刺体内各器官Na⁺含量都增大,而叶片中K⁺含量呈下降趋势;根和叶器官中K⁺/Na⁺值明显降低,各器官中Ca²⁺/Na⁺、Mg²⁺/Na⁺值都降低.盐渍生境下,疏叶骆驼刺体内Ca²⁺选择性运输系数和Mg²⁺选择性运输系数均为茎-叶>茎-刺>根-茎.疏叶骆驼刺为适应盐渍生境,在土壤含盐量较低时,将Na⁺聚集于茎和刺;而在土壤含盐量较高时,则将Na⁺聚集于叶片.此外,Ca²⁺和Mg²⁺可能是疏叶骆驼适应盐渍生境的无机渗透调节物质.

关键词: 适应性, 离子, 疏叶骆驼刺, 盐碱地

Abstract: In order to explore the adaptive capacity of Alhagi sparsifolia to soil salinity (mild, mo-derate, severe saline soil), the distribution, adsorption and translocation characteristics of Na⁺, K⁺, Ca²⁺, Mg²⁺ in different organs of A. sparsifolia, which is a dominant native vegetation in southern edge of Tarim basin, were investigated. The results showed that when grown on a mild and moderate saline soil, Na⁺ distribution in different organs of A. sparsifolia followed the order of stem≈thorn>leaf>root; when grown on a severe saline soil, Na⁺ distribution followed leaf>stem≈thorn>root. The distribution of Ca²⁺ and Mg²⁺ followed leaf >thorn>stem>root. With the increase of soil salt level, Na⁺ content in different organs of A. sparsifolia increased, while K⁺ content in leave decreased; meanwhile the increasing soil salt level significantly decreased the K⁺/Na⁺ ratio in both root and leave, as well as the Ca²⁺/Na⁺ and Mg²⁺/Na⁺ ratios in all organs. The selective transportation coefficients for Ca²⁺-Na⁺and Mg²⁺-Na⁺ followed order of stem-leaf>stem-thorn>root-stem under saline habitats. Based on the integrated analysis, in order to adapt to salinity habitat, A. sparsifolia could use multiple organs to accumulate Na⁺, depending on soil salt level. Na⁺ could accumulate in stem and thorn at a relative low level, but in leaves at high levels. Besides, Ca²⁺and Mg²⁺ could be the inorganic osmotic adjustment substances for A. sparsifolia to adapt the saline environment.

Key words: Alhagi sparsifolia, saline and alkaline land, ion, adaptability

罗瀚林, 曾凡江, 张波, 刘波, 赵生龙, 高欢欢. 疏叶骆驼刺适应盐渍生境的离子分布、吸收和运输特征[J]. 应用生态学报, 2016, 27(11): 3514-3520.

LUO Han-lin, ZENG Fan-jiang, ZHANG Bo, LIU Bo, ZHAO Sheng-long, GAO Huan-huan. Ion distribution, absorption and translocation characteristics of Alhagi sparsifolia in adaptation to saline habitat.[J]. Chinese Journal of Applied Ecology, 2016, 27(11): 3514-3520.

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疏叶骆驼刺适应盐渍生境的离子分布、吸收和运输特征

Ion distribution, absorption and translocation characteristics of Alhagi sparsifolia in adaptation to saline habitat.

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