西双版纳热带季节雨林优势植物热值  

Caloric values of dominant plant species in Xishuangbanna tropical seasonal rainforest

作　　者：唐炎林[1] 曹敏[1] 唐建维[1] 邓晓保[1] 林华[1] 李玉武[1] 邓云[1] 

机构地区：[1]中国科学院西双版纳热带植物园热带森林生态学重点实验室,云南勐腊666303

出　　处：《生态学杂志》2010年第3期427-433,共7页Chinese Journal of Ecology

基　　金：中国科学院野外台站基金资助项目

摘　　要：为探讨西双版纳热带季节雨林植物热值的变化规律,用SDACM-Ⅲa型量热值仪测定了该群落不同层次37种优势植物不同器官干湿季节的热值。结果表明:西双版纳热带季节雨林各层优势种的平均干质量热值在17.05～20.23kJ.g-1,乔木、层间藤本、灌木、草本干质量热值分别为18.86～20.23、17.97～19.76、17.71～18.83和17.05～17.45kJ.g-1。各层优势种平均干质量热值在干湿季节均表现为:乔木层>层间藤本>灌木层>草本层。所有层次相同各器官平均干质量热值在器官间存在差异,但只有叶与根、枝之间差异显著(P<0.05);不同层次中的同种植物干质量热值在干湿季节差异均不显著(P>0.05);各层优势植物的干质量热值在干湿季节之间差异不显著(P>0.05)。Aimed to explore the change patterns of the gross caloric value（GCV）of dominant plant species in Xishuangbanna tropical seasonal rainforest,the GCV of different organs of 37 dominant species in different layers of the forest was measured by SDACM-Ⅲa caloric value analyzer in dry and rainy seasons,respectively.The mean GCV of the 37 dominant species was 17.05-20.23 kJ·g^-1,and the GCV of trees,lianes,shrubs,and herbages was 18.86-20.23,17.97-19.76,17.71-18.83,and 17.05-17.45 kJ·g^-1,respectively.The mean GCV of the dominant species in different layers in both dry and rainy seasons decreased in the order of tree layerliane interlayershrub layerherbage layer.For the dominant species at the same layers,the mean GCV of their organs did not display significant differences,except for the GCV between leaves and roots or branches.No significant differences in the mean GCV of the same species in different layers were observed between dry and rainy seasons.Also,there were no significant differences in the mean GCV of the dominant species in the same layers in dry and rainy seasons.

关 键 词：西双版纳 热带季节雨林 干质量热值 优势植物 干湿季节 

分 类 号：Q948[生物学—植物学]