• 主题
高级搜索  >
历史搜索 清空历史
首页> 中文期刊> 《西北植物学报》 >云南普洱季风常绿阔叶林非结构性碳水化合物及其组分随环境的变化

云南普洱季风常绿阔叶林非结构性碳水化合物及其组分随环境的变化

         
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

为探索植物非结构性碳水化合物(NSC)组分随环境的变化特征,在云南普洱季风常绿阔叶林原始林选取6块60 m×60 m样地进行野外调查,各样地分别选择重要值前10位的物种进行取样,通过测定不同样地主要物种的NSC及其组分和样地环境因素,分析其非结构性碳水化合物与环境的关系.结果显示:(1)云南普洱季风常绿阔叶林植物中总体淀粉、可溶性糖、NSC含量分别为13.91％、3.31％、17.21％,淀粉和NSC含量在各器官中排序依次为根＞干＞枝＞叶,而可溶性糖含量排序依次为叶＞根＞枝＞干;淀粉、可溶性糖、NSC含量变异最大值分别为叶片19.09％、干15.32％和根16.30％.(2)云南普洱季风常绿阔叶林植物不同器官中淀粉含量仅与凋落物厚度、土壤pH及速效钾、全钾存在显著正或负相关关系,可溶性糖含量与海拔高度及土壤理化性质存在显著正或负相关关系;但茶梨与红椎中淀粉含量与土壤有效磷或全磷存在显著正相关关系,茶梨各器官中可溶性糖含量与所有环境因子均无显著相关性,红椎根中可溶性糖含量与pH值、枝中可溶性糖含量与全钾分别呈显著负相关关系;短刺椎各器官中淀粉含量与所有环境因子均无显著相关性,可溶性糖含量则与水解性氮、有效磷含量呈显著负相关关系,与坡度、全钾含量、凋落物厚度呈显著正相关关系.(3)单因素回归分析显示,海拔高度、有机质、水解性氮、全氮影响季风常绿阔叶林的总体可溶性糖含量,而其淀粉含量则主要受pH值影响.研究发现,季风常绿阔叶林NSC受环境因子影响,但不同NSC组分的环境影响因子不同.%In order to explore the effects of environments on nonstructural carbohydrates (NSC),we selected the top ten species of importance value to sample in each plot basing on the field investigation in six 60 × 60 m plots established in old-growth forest of monsoon evergreen broad-leaved forest in Yunnan.The contents of the starch,soluble sugar and NSC in the foliages,twigs,stems and roots of the dominant tree species and environmental factors were measured,and the correlations between the environmental factors and the contents of the starch,soluble sugar and NSC were assessed.The results showed that:(1) the contents of starch,soluble sugar and NSC were 13.91％,3.31％ and 17.21％ in monsoon evergreen broad-leaved forest in Pu'er in Yunnan,respectively.The sequence of the starch and NSC contents in each organ were roots ＞ stems ＞ twigs ＞ foliages,but the sequence of the soluble sugar content was foliages ＞ roots ＞ twigs ＞ stems.Tree organs with the highest coefficient of variation in starch content,soluble sugar content and NSC content were the foliages (19.09％),stems (15.32％) and roots (16.30％),respectively.(2) The starch content in trees was significantly correlated with the litter thickness,soil pH and potassium;while the soluble sugar content was significantly correlated with the elevation and the soil physical and chemical properties.The starch contents in both Anneslea fragrans and Castanopsis hystrix were significantly correlated with the soil phosphorus.However,no significant correlations were found between the soluble sugar contents in A.fragrans and all the studied environmental factors.The soluble sugar contents in the roots and twigs in C.hystria were significantly negatively correlated with soil pH and total potassium,respectively.Additionally,there were no significant relationships between the starch contents in Castanopsis echidnocarpa and all environmental factors.While the soluble sugar content in C.echidnocarpa was significantly negatively correlated with both the soil available nitrogen and phosphorus,and significantly positively correlated with slope,litter thickness and soil total potassium.(3) The soluble sugar content in monsoon broad-leaved evergreen forest trees was significantly affected by elevation,soil organic matter and nitrogen using a linear regression analysis,and the starch content was significantly affected by soil pH.The results show that environment affects NSC in monsoon broad-leaved evergreen forest,but different NSC component have different influence factors.

著录项

  • 来源
    《西北植物学报》 |2017年第10期|2052-2062|共11页
  • 作者

    刘万德; 苏建荣; 李帅锋; 郎学东; 徐崇华; 王发忠; 钟华;

  • 作者单位

    中国林业科学研究院资源昆虫研究所,昆明650224;

    云南普洱森林生态系统国家定位观测研究站,昆明650224;

    中国林业科学研究院资源昆虫研究所,昆明650224;

    云南普洱森林生态系统国家定位观测研究站,昆明650224;

    中国林业科学研究院资源昆虫研究所,昆明650224;

    云南普洱森林生态系统国家定位观测研究站,昆明650224;

    中国林业科学研究院资源昆虫研究所,昆明650224;

    云南普洱森林生态系统国家定位观测研究站,昆明650224;

    云南太阳河省级自然保护区管护局,云南普洱665000;

    云南太阳河省级自然保护区管护局,云南普洱665000;

    普洱市思茅区万掌山林场,云南普洱665000;

  • 原文格式 PDF
  • 正文语种 chi
  • 中图分类 植物生理生态学;
  • 关键词

    季风常绿阔叶林; 可溶性糖; 淀粉; 变异系数; 相关性分析;

相似文献

  • 中文文献
  • 外文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号