摘要
通过对福建三明32年生福建柏和杉木纯林凋落物的热值、灰分含量及其季节动态的研究表明,福建柏凋落物各组分的干重热值介于20 88～22 28kJ·g-1之间,杉木凋落物各组分干重热值介于20 22～22 08kJ·g-1之间,各树种凋落物各组分的热值大小顺序皆为:落叶>落花>落果>落枝>杂物。福建柏凋落物各组分的热值均高于杉木。福建柏落叶的干重热值和去灰分热值以2月最大,6月最小;杉木落叶的干重热值和去灰分热值以4月最大,9月最小。福建柏凋落物各组分的灰分浓度介于2 74%～5 29%之间;杉木凋落物各组分的灰分浓度介于3 17%～5 26%之间。福建柏林落叶的灰分浓度比杉木高。福建柏落叶的灰分浓度以10月最大,9月最小;杉木落叶的灰分浓度以12月最大,7月最小。
The research showed that the dry weight heat values of different Fokienia hodginsii litter components were 20.88～22.88 kJ·g^(-1),those of different Cunninghamia lanceolata litter components were 20.22～22.08 kJ·g^(-1),the sequence of heat values of different components of different tree species litters was as follows:fallen leaves>fallen blossoms>fallen fruits>fallen branches>litters.The heat values of different litter components of F.hodginsii were all higher than those of C.lanceolata.The fallen leaf ash concentration of F.hodginsii forest was higher than that of C.lanceolata forest.The former was biggest in Oct.and was smallest in Sep.;the latter was biggest in Dec.and was smallest in Jul.
出处
《福建林业科技》
北大核心
2005年第1期34-37,共4页
Journal of Fujian Forestry Science and Technology
