黑龙江省不同龄组软阔混交林碳密度及其分配

生态学杂志

黑龙江省不同龄组软阔混交林碳密度及其分配

佟健¹,金光泽^1**,李凤日²,贾炜玮²,崔晓阳^2

(¹东北林业大学生态研究中心，哈尔滨 150040； ^2 东北林业大学林学院，哈尔滨 150040)

出版日期:2014-12-10 发布日期:2014-12-10

Carbon density and distribution in soft broad-leaved mixed forest of different age classes in Heilongjiang Province, Northeast China.

TONG Jian¹, JIN Guang-ze^1**, LI Feng-ri², JIA Wei-wei², CUI Xiao-yang^2

(¹Center for Ecological Research, Northeast Forestry University, Harbin 150040, China; ^2School of Forestry, Northeast Forestry University, Harbin 150040, China)

Online:2014-12-10 Published:2014-12-10

摘要/Abstract

摘要：

以不同龄组的黑龙江省软阔混交林为研究对象，采用样地清查和异速生长方程模拟的方法，量化了黑龙江省不同龄组软阔混交林碳密度及其分配比例。结果表明: (1)黑龙江省软阔混交林具有较高的碳密度和较强的碳汇功能。不同龄组间的森林生态系统总碳库、植被、碎屑、土壤碳库的碳密度均差异显著，而不同龄组间植被、碎屑及土壤碳库碳密度在生态系统总碳库的分配比例均无显著差异。(2)森林生态系统各碳库碳密度随龄组呈上升趋势。植被碳库中，不同龄组间乔木层及其各器官碳密度(枝除外)均差异显著，而乔木层中各器官碳密度的分配比例均无显著差异；各龄组间灌木和草本层碳密度无显著差异。碎屑碳库中，枯落物碳密度随龄组呈显著上升趋势，而木质残体无显著变化。(3)相同龄组下，不同地区的林地特征会引起软阔混交林各碳库碳密度或其分配格局的差异。(4)林分密度、胸高断面积、平均胸径中，胸高断面积能更准确地反映碳密度随龄组的动态变化。

关键词: 流域开发, 沉积物, 大理西湖, 硅藻, 富营养化

Abstract: Accurate quantification of forest carbon (C) density and distribution is important for modeling C cycling in forest ecosystems. In this study, forest inventory and allometric approaches were used to measure and analyze C density and allocation in soft broad-leaved mixed forest of different stand age classes (young, halfmature, nearmature, mature and overmature forest) in Heilongjiang Province, Northeast China. The main results were: (1) The C sink function of soft broadleaved mixed forest was significant in Heilongjiang Province. The differences in C density were significant among the different stand age classes in terms of the forest ecosystem, vegetation, detritus, and soil C pool. However, there were no significant differences in distribution proportions of C densities among different stand age classes in the terms of the vegetation, detritus, and soil C pool. (2) The C densities of the ecosystem C pools increased with the stand age class. There were significant differences in the C densities of the overstory vegetation and the overstory components (except branches) among stand age classes. There were no significant differences in the distribution proportions of C densities in the overstory components among different stand age classes. The change of understory C densities was not significantly different among stand age classes. The C density of litter was significantly different among stand age classes, and the C density increased with stand age class in the detritus C pool. No significant differences were found for woody debris C density among stand age classes. (3) For the same stand age class, woodland characteristic differences in different areas have influence on C densities and the distribution proportions of ecosystem C pools in soft broad-leaved mixed forest in Heilongjiang Province. (4) Basal area could accurately reflect the dynamic variations of forest C density with the forest age.

Key words: Xihu Lake, catchment development, sediments, diatoms, eutrophication

佟健1,金光泽1**,李凤日2,贾炜玮2,崔晓阳2. 黑龙江省不同龄组软阔混交林碳密度及其分配[J]. 生态学杂志.

TONG Jian1, JIN Guang-ze1**, LI Feng-ri2, JIA Wei-wei2, CUI Xiao-yang2. Carbon density and distribution in soft broad-leaved mixed forest of different age classes in Heilongjiang Province, Northeast China.[J]. cje.

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