摘要
森林植被生物量和各植被含碳率是计算森林生态系统碳储量的两个关键因子。以黑龙江省红松人工林为研究对象,按照人工红松林分布区域(小兴安岭南坡、张广才岭东坡、张广才岭西坡和完达山)设置4块样地,伐24株人工红松为解析木,获得样地信息和解析木各器官、林下枯落物层和植被层生物量样本;通过Multi C/N 2100S碳氮分析仪测定解析木各器官及林下层各部分含碳率。基于方差分析和多重比较研究解析木生长区域、胸径、各器官(树干、树枝、树叶和树根)对人工红松解析木含碳率的影响,同时研究不同区域林下枯落物层(枯枝、枯叶和半分解)和植被层(灌木和草本)含碳率的差异性。研究结果表明;人工红松解析木胸径大小对含碳率没有影响;解析木各器官和分布区域的不同对含碳率的影响具有交互作用,因此对不同区域不同器官的含碳率要进行实测,平均大小为树叶(0.496 4)>树枝(0.488 6)>树根(0.488 5)>树干(0.479 9);无论是同一区域内还是不同区域之间林下枯落物层和植被层含碳率差异都显著,平均大小为枯叶(0.467 5)>枯枝(0.463 0)>草本(0.436 0)>灌木(0.428 6)>半分解(0.391 3)。
Forest biomass and carbon content of its vegetation are the two key factors to calculate forest ecosystems carbon storage.The study depending on planted Pinus koraiensis middle-aged forest in Heilongjiang province,set 4 plots in the following areas： the southern slope of Xiaoxing＇anling,eastern and western slope of Zhangguangcailing,and Wandashan region according to the distribution of planted Pinus koraiensis forest.A total of 24 sample trees were cut down and the information of the plots and biomass data of the samples organs and each parts of understory layers were obtained.The carbon content rate of each parts was measured by Multi C/N 2100S.Based on analysis of variance and multiple comparisons（LSD）,the impacts of different growth regions,DBH,and tree organs on tree carbon content rate were analyzed.The difference of the carbon content in the litter layer and the vegetation layer in different region was also analyzed.The results indicated that：（1） DBH has no obvious effect on the carbon content of Planted Pinus koraiensis.（2） Different organs and regions have interaction effect on the carbon content,so in order to improve the accuracy of carbon storage estimation.We should measure each organs carbon content rate in each area.The order of the mean carbon content rate of each organ is as follows： Leaf（0.4964） Branch（0.4886） Root（0.4885） Stem（0.4799）.（3） No matter in the same area or not,each part of the understorys carbon content is significantly different from that of the vegetation layer,and the carbon content is ordered as Leaves（0.4675） Deadwood（0.4630） Herb（0.4360） Shrubs（0.4286） Half decomposition layer（0.3913）.
出处
《森林工程》
2013年第5期19-23,54,共6页
Forest Engineering
基金
"十二五"国家科技支撑项目(2011BAD37B02)
关键词
红松人工林
生物量
含碳率
方差分析
Pinus koraiensis
biomass
carbon content
analysis of variance
作者简介
孙虎（1987-），男，甘肃酒泉人，硕士研究生。研究方向：森林经理。
通信作者：李凤日（1963-），男，黑龙江尚志人，博士，教授。研究方向：森林经理。
