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对茂兰喀斯特森林3种主要演替群落——喀斯特原生乔木林、次生林和灌木林的凋落物数量、组成特征及季节动态变化进行了为期27个月的观测研究。结果表明,茂兰喀斯特原生乔木林、次生林和灌木林的年平均凋落物量分别为4.503、3.505和2.912 t.hm–2;年总凋落物的叶、枝、花果和其他的比例分别为64.72%、14.60%、12.33%、8.35%;74.28%、7.43%、10.88%、7.41%和75.94%、8.56%、12.93%、2.57%,叶凋落物量占总凋落物量的64.72%–75.94%;茂兰喀斯特森林3种演替群落凋落物的月动态变化规律均为双峰型,峰值分别出现在生长季早期3–5月和休眠期10–12月。
A 27-month observation was conducted on the litter quantity, compositional characteristics and seasonal dynamics of three main successional communities in karst karst forest - karst primary arbor, secondary forest and shrubbery. The results showed that the annual average litterfalls of the native trees, secondary forests and shrubs in the karst areas of Maolan were 4.503, 3.505 and 2.912 t.hm-2, respectively. The proportions of leaves, branches, flowers, fruits and others in the total litters were 64.72 Leaf litter accounted for 64.72% -75.94% of the total litter amount, and the total litterfall amount was 14.60%, 12.33%, 8.35%, 74.28%, 7.43%, 10.88%, 7.41% and 75.94%, 8.56%, 12.93% and 2.57% The monthly dynamics of litterfall litter in the three successional communities in LanKarst forest were bimodal with peak values occurring in March to May in the early growing season and from October to December in dormancy respectively.