滨海沙地不同树种人工林的碳储量及其分配格局  

Carbon storage and its allocation to different plantations in a coastal sandy area

作　　者：葛露露[1] 孟庆权 林宇 何宗明[1] 邱岭军 胡欢甜 GE Lulu;MENG Qingquan;LIN Yu;HE Zongming;QIU Lingjun;HU Huantian(College of Forestry,Fujian Agriculture and Forestry University,Fuzhou 350002,China;Changle Dahe State-owned Protection Forest Farm of Fujian Province,Changle 350212,China)

机构地区：[1]福建农林大学林学院,福州350002 [2]福建省长乐大鹤国有防护林场,长乐350212

出　　处：《应用与环境生物学报》2018年第4期723-728,共6页Chinese Journal of Applied and Environmental Biology

基　　金：国家自然科学基金项目(31570604,41371269);福建省林业科技项目(闽林科[2014]2号);福建农林大学部级创新平台资助~~

摘　　要：为促进沿海合理营林和碳库平衡,基于对福州市滨海后沿沙地上营造的人工林的调查,研究尾巨桉、木麻黄、纹荚相思3种人工林生态系统的碳含量、碳储量及分配格局.结果表明,尾巨桉、木麻黄、纹荚相思不同器官平均碳含量分别为456.08-482.68、431.89-464.90、472.93-505.10 g/kg.相同树种不同器官之间和相同器官不同树种之间的碳含量均存在显著差异（P〈0.05）.不同林分间乔木层的碳储量表现为木麻黄（32.89 t/hm^2）〉纹荚相思（31.33 t/hm^2）〉尾巨桉（30.20 t/hm^2）,其中,乔木层各器官碳储量均以树干（10.92 t/hm^2、10.36 t/hm^2、15.00 t/hm^2）最大,分别占各自乔木层碳储量的33.20%、33.06%、49.67%;地被层（包括林下植被层和凋落物层）的碳储量表现为尾巨桉（6.42 t/hm^2）〉纹荚相思（6.19 t/hm^2）〉木麻黄（4.57 t/hm^2）,其中凋落物层碳储量均远远大于草本层碳储量;土壤层的碳储量表现为木麻黄（8.02 t/hm^2）〉纹荚相思（7.31 t/hm^2）〉尾巨桉（6.42 t/hm^2）.这3种人工林生态系统总碳储量表现为木麻黄（45.48 t/hm^2）〉纹荚相思（44.83 t/hm^2）〉尾巨桉（43.04 t/hm^2）,且碳储量分布格局均为乔木层〉土壤层〉凋落物层〉草本层.因此,滨海沙地这3种人工林生态系统固碳效益无显著差异,纹荚相思、尾巨桉和木麻黄都是很好的固碳树种.Based on the survey on the plantations in the southeast coastal area of Fuzhou, we investigated the carbon content, storage, and allocation in plantation ecosystems growing Eucalyptus urophylla × E. grandis（EUC）, Casuarina equisetifolia（CAS）, and Acacia aulacocarpa（ACA）. The results showed that the average carbon content in the different organs of EUC,CAS, and ACA ranged from 456.08 to 482.68 g/kg, 431.89 to 464.90 g/kg, and 472.93 to 505.10 g/kg, respectively. There were significant differences in the carbon content among the different organs of the same species and among the same organ of different species（P〈0.05）. The carbon storages in the tree layer were ranked as： CAS（32.89 t/hm^2）〉 ACA（31.33 t/hm^2） 〉EUC（30.20 t/hm^2）. The highest amount of carbon storage was observed in the stem, being 10.92 t/hm^2, 10.36 t/hm^2, and 15.00 t/hm^2 for CAS, ACA, and EUC, respectively, which accounted for 33.20%, 33.06%, and 49.67%, respectively of the carbon storage in the tree layer. The carbon storages in the ground cover（including the understory vegetation layer and litter layer） were in the order： EUC（6.42 t/hm^2） 〉ACA（6.19 t/hm^2） 〉CAS（4.57 t/hm^2）, and the carbon storage of the litter layer was much higher than that of the herb layer. The carbon storages in the soil layer were in the order： CAS（8.02 t/hm^2） 〉ACA（7.31 t/hm^2）〉 EUC（6.42 t/hm^2）. The carbon storages in the ecosystem were in the order： CAS（45.48 t/hm^2）〉 ACA（44.83 t/hm^2） 〉EUC（43.04 t/hm^2）. For all the tree species, the tree layer stored the greatest amount of carbon, followed by the soil layer and litter layer, while the carbon storage in the herb layer was the lowest. Therefore, there were no significant differences in the carbon sequestration benefits of the 3 plantations in the southeast coastal area of Fuzhou, and the carbon fixation by ACA and EUC were comparable to that of CAS.

关 键 词：生物量 碳含量 碳储量 分配格局 滨海沙地 人工林 

分 类 号：S718.554.2[农业科学—林学]