鼎湖山演替系列中代表性森林凋落物研究  

The litter-fall of representative forests of successional series in Dinghushan

作　　者：张德强[1] 叶万辉[1] 余清发[1] 孔国辉[1] 张佑倡 

机构地区：[1]中国科学院华南植物研究所，广州 510650

出　　处：《生态学报》2000年第6期938-944,共7页Acta Ecologica Sinica

基　　金：中国生态系统研究网络(CERN);中国科学院"九五"院长特别支持资助项目(KZ95T-04-02-04)

摘　　要：研究鼎湖山演替系列中代表性森林季风常绿阔叶林 (简称阔叶林 )、针阔叶混交林 (简称混交林 )和针叶林 (或马尾松林 )的凋落物产量、组成特征和季节动态变化及其分解速率 ,结果表明 :其年均凋落物量 ( t/hm2 )分别为 8.2 8( 7.57～ 9.1 2 )、8.50 ( 7.85～ 9.2 6)和 3.31 ( 2 .4 5～ 3.74 ) ;叶、枝和花果杂物的比例 ( % )分别为 61 :1 7:2 2、67:1 6:1 7和 78:4 :1 8;凋落物的凋落高峰出现在雨季初期和旱季前期 ;凋落物的年均分解速率 ( % )分别为 4 9.1 6、4 0 .85和 36.94 ,差异显著。不同森林凋落物分解速率差异显著的产生是在凋落物分解前期形成的。The productions,composition,seasonal dynamics and its decomposition rate of litter fall of representative forestsmonsoon evergreen broad leaved forest(B F )and needle broad leaved mixed forest(M F )and coniferous forest(C F )of successional series in Dinghushan were studied The results showed that the mean annual litter fall productions(t hm -2 )were 8 28 and 8 50 and 3 31,respectively The composition of litter fall is leaves 61%,branches 17%,flowers and other mixed matter 22% in B F that is 67%,16%,17% in M F and that is 78%,4%,18% in C F ,respectively The litter fall peak appeared at the rain season and earlier stage of dry season The mean annual decomposition rates(%)were 49 15 and 40 84 and 36 94,respectively The decomposition rates of litters were different significantly in the early stage of the process

关 键 词：鼎湖山 演替系列 代表性森林 凋落物 

分 类 号：S718.5[农业科学—林学]