摘要
在省级尺度上分析不同林龄杉木碳储量数据,以掌握江西省杉木人工林碳储量动态分配格局。本研究对江西省杉木林生态系统进行了野外调查,并对现有杉木生物量数据进行了综合分析。结果表明：江西省杉木人工林碳储量变化范围为27.82-82.61 t/hm2,其乔木层碳储量占94.2%以上。杉木林和乔木层碳储量随林龄先增加后略微下降,而各龄林的灌木层、草本层和凋落物层碳储量均没有显著差异。幼龄林、近熟林、成熟林各组分碳储量大小排序均为乔木层〉凋落物层〉灌木层〉草本层,而在中龄林和过熟林中则为乔木层〉凋落物层〉草本层〉灌木层。幼龄林各器官碳储量大小排序为树干〉叶〉根〉枝,而其他林龄中的排序均为树干〉根〉枝〉叶。
Carbon storage data at different stand ages were analyzed at the provincial scale, in order to master the dynamic carbon allocation pattern of Cunninghamia lanceolata plantations in Jiangxi Province. This study carried out field investigation on the ecosystem of Cunninghamia lanceolata plantations in Jiangxi Province, and comprehensive analysis of the present biomass data of Cunninghamia lanceolata. The results showed that, carbon storage of Cunninghamia lanceolata plantations in Jiangxi Province ranged from 27.82 to 82.61 t/hm2, and the tree layer carbon storage accounted for more than 94.2%. The carbon storage of Cunninghamia lanceolata plantations and their tree layers increased with the age increasing at first, and then decreased. Carbon storage of the shrub layer, herb layer and litter had no significant difference among all age forests. The permutation order of carbon storage of each component in young, premature and mature plantations was： tree layer 〉 litter layer 〉 shrub layer 〉 herb layer, however, the permutation order in middle-aged and overaged plantations was： tree layer 〉 litter layer 〉 herb layer 〉 shrub layer. The permutation order of carbon storage of each organ in young plantation was： trunk 〉 leaf 〉 root 〉 branch, but the permutation order in other four plantations was： trunk 〉 root 〉 branch〉 leaf.
出处
《中国农学通报》
2015年第28期1-5,共5页
Chinese Agricultural Science Bulletin
基金
国家"十二五"科技支撑计划课题"杉木速生丰产林定向培育技术研究"(NO.2015BAD09B01-1)
江西省科研院所基础设施配套项目"杉木人工林生态系统碳库特征及其增汇技术研究"(20123BBA13040)
江西省财政林业重大专项"江西典型人工林生态系统碳循环特征及其调控技术研究"(2011511101)
江西省林科院青年基金项目"江西省杉木人工林碳汇动态模型构建"(2014521103)
关键词
杉木人工林
分配格局
碳储量
江西省
Cunninghamia lanceolata plantation
allocation pattern
carbon storage
Jiangxi Province
