马尾松阔叶树混交林凋落物浅析

The analysis of annual litter fall on mixed-species of conifer-hardwood forest

针阔混交林凋落物研究中,马×拉、马×青、马×闽、马×格、马×苦等混交群落,这5个群落以及马尾松纯林凋落物表层的化验分析结果,枯叶占优势,马×苦混交群落最高,马尾松纯林最低。营养分析A层的凋落物的N及Ca的含量最高,其平均值分别为:0.80%和1.26%,5种元素含量大小为:Ca>N>Mg或K>P。马×闽混交群落中Mg含量最小。

Analysed in mixed-species five conifer-hardwood forest communi ties chemically and in pure forest Pinus massoniana,nutrient concentrations of “ A” layer forest floor,chemical analysis on litter was done in mixed forests and in fure forest of Pinus massoniana.The results show that,the leaffall of th e litter composition is superior in six forests,the most in the mixed forest of Pinus massoniana-hardwood and the least in pure Pinus massoniana forest.Furthe r analysis on nutrient concentration at “ A” layer litter results that the am ount of N and Ca is the most in seven forests.(the average amount of N and Ca is 0.80% and 1.26% ),the amount of five elements is in the order of Ca>N>Mg or K>P,the Mg amount is the least in the mixed forest of Pinus massoniana and Cast anopsis fissa.