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当前位置: 首页 > 文章 > 黔中喀斯特区不同光合功能群树种凋落叶分解特性研究 西部林业科学 2014 (6) 139-142
Position: Home > Articles > Leaf Litter Decomposition of Different Species of Photosynthetic Functional Plant Groups in Karst Area of Central Guizhou Journal of West China Forestry Science 2014 (6) 139-142

黔中喀斯特区不同光合功能群树种凋落叶分解特性研究

作  者：
汪舒雅;喻理飞;黄宗胜
单  位：
贵州大学林学院
关键词：
残留率;分解速率;有机碳释放速率;光合功能群树种;喀斯特森林;黔中
摘  要：
通过2013年在黔中喀斯特区采用网袋法进行植物凋落叶的分解实验,比较不同光合功能群树种凋落叶的残留率、分解速率、有机碳释放速率的差异。结果表明,研究区广光耐荫功能群树种(I)、窄光耐荫功能群树种(II)、广光喜光功能群树种(III)、窄光喜光功能群树种(IV)4种功能群树种凋落物在1年的分解过程中,残留率变化趋势分第1~4月、第5~9月、第10~12月3阶段,呈快-慢-快的规律;各光合功能群树种凋落叶分解速率为III>IV>I>II。有机碳释放速率为IV>II>III>I。凋落叶分解过程残留率与其有机碳释放速率均呈极显著负相关关系。喜光树种比耐荫树种凋落叶更易分解。
译  名：
Leaf Litter Decomposition of Different Species of Photosynthetic Functional Plant Groups in Karst Area of Central Guizhou
作  者：
WANG Shu-ya;YU Li-fei;HUANG Zong-sheng;College of Forestry,Guizhou University;
关键词：
residual rate;;decomposition rate;;organic carbon release rate;;photosynthetic functional plant groups;;Karst forest;;Central Guizhou
摘  要：
In 2013 by using the litter-bag method,the researchers carried out the plant leaf litter decomposition experiment in central Guizhou Karst area,in order to compare differences between residual rates of different photosynthetic functional plant groups' littered leaves,the leaf litter decomposition rates and the organic carbon release rates. There were four species of photosynthetic functional plant groups analyzed in the study area,which were wide-light shade tolerant species( I), narrow-light shade tolerant species( II), wide-light bright light species( III),narrow-light bright light species( IV). Based on analysis of the leaf litter decomposition process in one year,the results showed that tendency of the residual rates presented the fast-slow-fast changes during different periods of time from January to April,May to September,and October to December respectively. The leaf litter decomposition rate was III > IV > I > II. The organic carbon release rate was IV > II > III > I. There were negative correlation between the residual rates and the organic carbon release rates. The bright light species were more easier to be decomposed.

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