摘要
在广西东门林场进行了桉树不同施肥水平下林木碳贮量研究,分析了不同施肥水平下桉树林分平均胸径、树高、单株生物量和碳贮量的差异特征。结果表明:6种施肥处理中最大施肥量的胸径、树高最大,最小施肥量的胸径、树高最小;在施肥总量相同的条件下,P含量比例高的林分胸径、树高平均值均大于P比例低的施肥处理;施肥对桉树林分生长的影响效果随着施肥后时间的延长而减弱;192月生时6种施肥处理下桉树林分平均单株碳贮量大小排序为处理3(81.37 kg)>处理1(80.22 kg)>处理5(79.65 kg)>处理4(78.07 kg)>处理2(77.86 kg)>处理6(76.21 kg);各器官碳贮量所占比例的大小排序均为树干(48.62%～48.95%)>树枝(17.20%～17.29%)>树根(16.15%～16.36%)>树叶(9.57%～9.67%)>树皮(8.05%～8.15%)。
The biomass carbon sequestration of individual Eucalypt tree under different fertilization levels were studied in Dongmen Forest Farm in Guangxi province, China. The difference features of DBH, mean height, mean individual tree biomass and carbon sequestration were analyzed. The results show that among the six fertilizer treatments, the tree with highest amount fertilizer had the biggest value of DBH and height growth, the tree with least amount fertilizer had the least value of DBH and height growth. Although the same amount fertilizer, the tree with higher content of P had bigger mean DBH value than the lower, and the effects of 6 fertilizer treatments decreased as the time passed. The mean individual tree carbon sequestration at 192 months under 6 fertilizer treatments showed an order from large to small as followings： treatment 3（81.37 kg）〉treatment 1（80.22 kg）〉treatment 5（79.65 kg）〉treatment 4（78.07 kg） 〉treatment 2（77.86 kg）〉treatment 6（76.21 kg）. The rate of carbon sequestration for different parts of tree under 6 fertilizer treatments all showed an order as followings： stem （48.62%--48.95%）〉 branch （17.20%-17.29%）〉root（16.150/0-16.36%）〉 leaf （9.57%~9.67%）〉bark （8.05%-8.15%）.
出处
《中南林业科技大学学报》
CAS
CSCD
北大核心
2012年第5期97-101,共5页
Journal of Central South University of Forestry & Technology
基金
林业重大公益性行业科研专项(201104003)"桉树生态经营及产业升级关键技术研究"
关键词
桉树
施肥水平
碳贮量
Eucalyptus
fertilization levels
carbon sequestration
