本文研究了黑石顶自然保护区南亚热带常绿阔叶林的凋落量及其季节动态,并对现存凋落量和凋落物分解速率进行了初步测定。 小凋落物[叶、D(直径)
Litterfall and its monthly variation, litter standing crop, and the litter decomposition rate in the lower subtropical evergreen broad- leaved forest of Heishiding Natural Reserve, Province Guangdong, were studied from Aug. 1989 to Aug. 1991. the forest is at 400 m above sea level , which was dominated by Ixonanthes chinensis, Artocarpus styracifolins, Ormosia glaberrima, Crypto-carya cancinna, Calamus rhabdocladus, Cibotium, barametz, etc. As measured, amount of small litter-fall including leaves, branches less than one centimeter in diameter, flowers and fruits, and trash was 5. 230 t · ha-1 per year (mean for 2 yrs. ) among which leaves, branches, and flowers and fruits were 3. 550(68. 22%), 0. 837(15. 81%), and 0. 582(10. 97%) respectively. It was obvious that the litterfall varied monthly. Greater leaf litterfall occured in the wet season, with a peak in April, while flower and fruit litterfall was more in Autumn and Winter. Big branch (diameter over 1 cm) litterfall was 0. 34 t · ha-1per year (mean for 2 yrs. ), with significant yearly variation. Litter standing crop amounted to 5. 545 t · ha-1, among which leaves, branches, and flowers and fruits were 3.275 (59.06%), 1. 618(29. 18%), and 0. 131(2. 36%) respectively. Leaf litteffall and standing crop of leaf litter were about 1/4 and 1 /5 of the leaf biomass respectively. It took about 5 months for the litter to lose half of its weight in wet season. The lit ter decreased to 19 % of the original weight in 18 months.
陈章和,张宏达,王伯荪.黑石顶自然保护区南亚热带常绿阔叶林生物量与生产量研究VII.凋落量、现存凋落量和凋落物分解速率[J].热带亚热带植物学报,1992,0(1):107~114
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