通过对27a生杉木观光木混交林及杉木纯林凋落物的数量、组成及季节动态的研究,结果表明,混交林的年凋落物量为5.942t·hm-2,略高于纯林杉木的5.668t·hm-2,其中杉木和观光木分别占凋落物总量的70.38%和18.28%;混交林中观光木落叶占观光木凋落物总量的比例为82.78% ,比相应杉木针叶所占比例高出21.8% ;混交林与纯林凋落物总量均在3月、8月和12月出现峰值,而以3月数量最大,其季节变化模式则为春季>冬季>夏季>秋季。
A study was carried out to determine amount, composition and seasonal dynamics of litterfall in mixed forest of Cunninghamia lanceolata and Tsoongiodendron odorum and in pure stand of Cunninghamia lanceolata at 27 years old. Annual litterfall was up to 5.942 t·hm-2 in mixed stand, slightly higher than that in pure stand, of which 70.8% and 18.28% were occupied by Cunninghamia lanceolata and Tsoongiodendron odorum, respectively. The proportion of leaf litter to total litterfall of Tsoongiodendron odorum was 82.78%, 21.8% higher than that of Cunninghamia lanceolata. Monthly litterfall of both mixed stand and pure stand peaked in March, August and December, with the highest in March, and the seasonal change patterns of litterfall in both stands were in the order of spring>winter>summer>autum.
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