首页 | 本学科首页   官方微博 | 高级检索  
     检索      

鼎湖山季风常绿阔叶林各层次优势种热值研究
引用本文:旷远文,温达志,周国逸,刘世忠,张德强.鼎湖山季风常绿阔叶林各层次优势种热值研究[J].北京林业大学学报,2005,27(2):6-12.
作者姓名:旷远文  温达志  周国逸  刘世忠  张德强
作者单位:1.1 北京林业大学工学院2 北京林业大学材料科学与技术学院
基金项目:中国科学院知识创新工程项目 , CERN监测项目
摘    要:探讨鼎湖山南亚热带季风常绿阔叶林不同层次优势植物热值一般规律,可为该群落能量特征和生态效率研究提供基础资料和科学依据. 2002年用PARR 1281型氧弹热值仪测定了该群落不同层次21种优势植物不同器官(部位)热值. 结果表明, 季风常绿阔叶林各优势种的平均干重热值在15.92~19.66 kJ/g间,乔木1层干重热值以厚壳桂最高, 乌榄最低; 乔木2层华润楠最高, 云南银柴最低; 层间藤本植物白背瓜馥木和杖枝省藤分别为19.73和18.19 kJ/g; 灌木层干重热值最高仍为厚壳桂, 最低为云南银柴; 草本层植物干重热值在15.92~17.52 kJ/g之间. 各层优势种平均干重热值和去灰分热值都表现为: 层间藤本>乔木1层>乔木2层>灌木层>草本层. 植物器官去灰分热值存在差异, 乔木1层中锥栗、荷木树皮及厚壳桂、乌榄树叶最高, 乔木2层中云南银柴根最高, 层间植物叶>干>根, 草本植物是地上部分>地下部分; 同种植物(厚壳桂或云南银柴)在不同层次中的去灰分热值没有明显差别, 器官生长的年龄(或直径)对去灰分热值有影响, 随年龄增大, 去灰分热值有减少趋势. 

关 键 词:鼎湖山    季风常绿阔叶林    干重热值    去灰分热值    灰分含量
文章编号:1000-1522(2005)02-0006-07
收稿时间:1900-01-01

Caloric values of dominant species in the different layers of lower subtropical monsoon evergreen broad_leaved forest at Dinghushan Mountain
KUANG Yuan-wen,WEN Da-zhi,ZHOU Guo-yi,LIU Shi-zhong,ZHANG De-qiang.Caloric values of dominant species in the different layers of lower subtropical monsoon evergreen broad_leaved forest at Dinghushan Mountain[J].Journal of Beijing Forestry University,2005,27(2):6-12.
Authors:KUANG Yuan-wen  WEN Da-zhi  ZHOU Guo-yi  LIU Shi-zhong  ZHANG De-qiang
Institution:South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, P. R. China.
Abstract:Investigation of the caloric values of the dominant species from different layers in lower subtropical monsoon evergreen broad_leaved forest in the Dinghushan Mountain may provide scientific foundamental data for studying energy flow and ecological efficiency. The values were measured by the PARR 1281 oxygenic bomb caloric_meter. The mean gross caloric values (GCV) of the 21 dominant species were in the range of 15.92~19.80 kJ/g. Cryptocarya chinensis was the highest and Canarium pimela was the lowest GCV species in tree layer 1, while the corresponding species were Machilus chinensis and Aporosa yunnanensis in tree layer 2.The lianas, Fissistigma glaucescens and Calamus rhabdocladus had the values of 19.73 kJ/g and 18.19 kJ/g, respectively. In the shrub layer, the highest GCV species was Cryptocarya chinensis and Aporosa yunnanensis the lowest. The mean GCV of the three herbaceous species was 15.92~17.52 kJ/g. The GCV and ash_free caloric value (AFCV) decreased in the following order: lianas, tree layer 1, tree layer 2, shrub layer and herb layer. The AFCV differed among various components. In tree layer 1, Castanopsis chinensis and Schima superba showed the highest values in barks, whereas Cryptocarya chinensis, and Canarium pimela had their highest values in the leaves. In tree layer 2, however, Aporosa yunnanensis showed the highest value in roots. For lianas, the AFCV decreased from the leaves, stems to roots. In the herb species, the AFCV aboveground was higher than the belowground. Minor differences in AFCV were observed for the same species (Cryptocarya chinensis or Aporosa yunnanensis) in different layers. The AFCV of the woody components tended to decease with age and diameter increment.
Keywords:Dinghushan  monsoon evergreen broad-leaved forest  gross caloric value  ash-free caloric value  ash content
本文献已被 CNKI 万方数据 等数据库收录!
点击此处可从《北京林业大学学报》浏览原始摘要信息
点击此处可从《北京林业大学学报》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号