云南普洱季风常绿阔叶林不同林层非结构性碳水化合物特征

doi:10.13287/j.1001-9332.201803.005

应用生态学报 ›› 2018, Vol. 29 ›› Issue (3): 775-782.doi: 10.13287/j.1001-9332.201803.005

云南普洱季风常绿阔叶林不同林层非结构性碳水化合物特征

刘万德^1,2, 苏建荣^1,2*, 李帅锋^1,2, 徐崇华³, 郎学东^1,2, 黄小波^1,2, 钟华⁴

¹中国林业科学研究院资源昆虫研究所, 昆明 650224;
²云南普洱森林生态系统国家定位观测研究站, 昆明 650224;
³云南太阳河省级自然保护区管护局, 云南普洱 665000;
⁴普洱市思茅区万掌山林场, 云南普洱 665000

收稿日期:2017-08-14 出版日期:2018-03-18 发布日期:2018-03-18
通讯作者: * E-mail: jianrongsu@vip.sina.com
作者简介:刘万德, 男, 1979年生, 博士, 副研究员. 主要从事生物多样性保育、恢复生态学及功能生态学研究. E-mail: liuwande@126.com
基金资助:
本文由国家重点研发项目(2016YFC0503103,2017YFC0505005)、国家自然科学基金项目(31370592,31200461)、林业公益性行业专项(201404211)和云南省科技人才和平台计划项目(2017HB095)资助

Non-structural carbohydrates characteristics of different forest layers in monsoon broad-leaved evergreen forest in Pu’er, Yunnan Province, China.

LIU Wan-de^1,2, SU Jian-rong^1,2*, LI Shuai-feng^1,2, XU Chong-hua³, LANG Xue-dong^1,2, HUANG Xiao-bo^1,2, ZHONG Hua⁴

¹Research Institute of Resources Insect, Chinese Academy of Forestry, Kunming 650224, China;
²Pu’er Forest Eco-system Research Station, State Forestry Administration, Kunming 650224, China;
³Administration Bureau of Taiyanghe Provincial Nature Reserve, Pu’er 665000, Yunnan, China;
⁴Simao District Wanzhangshan Forestry Farm, Pu’er 665000, Yunnan, China

Received:2017-08-14 Online:2018-03-18 Published:2018-03-18
Contact: * E-mail: jianrongsu@vip.sina.com
Supported by:
This work was supported by the National Key Research & Development Program of China (2016YFC0503103, 2017YFC0505005), the National Natural Science Foundation of China (31370592, 31200461), and the Scientific and Technological Talents and Platform Plan of Yunnan (2017HB095)

摘要/Abstract

摘要： 在聚类分析的基础上,研究云南普洱季风常绿阔叶林主要物种非结构性碳水化合物(NSC)及其组分浓度、分配和季节性动态在林冠层、亚冠层和林下层间的变化特征.结果表明:亚冠层中可溶性糖及NSC浓度最高,分别为3.9%和13.3%,可溶性糖淀粉比在林下层最低,为0.76,而淀粉浓度则在各林层间无显著性差异.3个林层的可溶性糖均主要分配在叶片中,淀粉和NSC主要分配在根中.亚冠层中叶片和树干的可溶性糖浓度显著高于林冠层和林下层,枝和根的可溶性糖浓度在3个林层间无显著性差异;叶片的淀粉浓度则随林层高度降低而增加,但根淀粉浓度则是在林下层最低,为10.7%,枝和树干的淀粉浓度在3个林层间无显著差异;叶片NSC浓度为林冠层(10.7%)显著低于亚冠层(12.3%)和林下层(12.0%),但根的NSC浓度在林下层中最低,为14.2%;林下层叶片、枝、树干中可溶性糖淀粉比值均最低,但根的可溶性糖淀粉比值最低值出现在林冠层(0.79).3个林层NSC及其组分均存在显著的季节性变化,可溶性糖及可溶性糖淀粉比均为雨季显著高于旱季,而淀粉和NSC浓度则均在旱季中较高.不同林层NSC及其组分浓度的差异反映了不同高度树种碳利用策略的差异,部分地解释了物种的共存机制.

Abstract: Based on cluster analysis of species vertical stratification, the variations in concentration, allocation and seasonal dynamics of non-structural carbohydrates were investigated in a monsoon broad-leaved evergreen forest in Pu’er, Yunnan Province. The results showed that the concentrations of soluble sugar (3.9%) and nonstructural carbohydrates (NSC, 13.3%) were the highest in the sub-canopy. In contrast, the sugar/starch (0.76) of understory was the lowest. There was no significant difference in starch content among three forest layers. For all forest stories, the soluble sugar was mainly allocated to leaves and the roots had more starch and NSC. The soluble sugar contents in leaves and trunks of sub-canopy species were higher than canopy and understory species. There were no significant differences in soluble sugar content of twigs and roots among three different forest layers. The starch content of leaves increased with decreasing height of forest layers. In contrast, the lowest starch content (10.7%) of roots was in understory. There was no significant difference in starch content of twigs and trunks among three different forest layers. The NSC content of leaves was lower in canopy (10.7%) than that in sub-canopy (12.3%) and understory (12.0%). The lowest NSC content of roots was in understory (14.2%). The lowest sugar/starch of leaves, twigs, and trunks presented in understory, while the lowest sugar/starch of roots presented in canopy (0.79). There were dramatic seasonal variations in concentrations and components of NSC. The concentration of soluble sugar and the sugar/starch were higher in the rainy season than that in the dry season. However, the concentration of starch and NSC were higher in the dry season than in the rainy season. The variations in concentration of NSC and its components among forest layers indicated that species with different heights varied in their utilization strategies of carbon, which partly explained species coexistence.

刘万德, 苏建荣, 李帅锋, 徐崇华, 郎学东, 黄小波, 钟华. 云南普洱季风常绿阔叶林不同林层非结构性碳水化合物特征[J]. 应用生态学报, 2018, 29(3): 775-782.

LIU Wan-de, SU Jian-rong, LI Shuai-feng, XU Chong-hua, LANG Xue-dong, HUANG Xiao-bo, ZHONG Hua. Non-structural carbohydrates characteristics of different forest layers in monsoon broad-leaved evergreen forest in Pu’er, Yunnan Province, China.[J]. Chinese Journal of Applied Ecology, 2018, 29(3): 775-782.

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云南普洱季风常绿阔叶林不同林层非结构性碳水化合物特征

Non-structural carbohydrates characteristics of different forest layers in monsoon broad-leaved evergreen forest in Pu’er, Yunnan Province, China.

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