Heterogeneous dispersal of tree litterfall corresponding with patchy canopy structure in a temperate mixed forest
Heterogeneous dispersal of tree litterfall corresponding with patchy canopy structure in a temperate mixed forest
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温带混交林中树木凋落物的异质扩散与斑块状冠层结构相对应
DOI：
10.1007/bf00044917
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发表时间：
1991
期刊：
影响因子：
--
通讯作者：
Y. Hirabuki
中科院分区：
文献类型：
--
作者：
Y. Hirabuki
细凋落物的空间分布格局进行了分析，在温带混交林，在日本东北部的森林结构。林冠层是由两种斑块组成的镶嵌体，耐荫冷杉（Abies firma，估计年龄为81-146年）的斑块是由两种斑块组成的。和早期演替落叶阔叶树（约45年）。凋落物输入到森林地面进行了为期三年的观察，使用38个陷阱设置在1.2米的高度。年平均细凋落物总量为6.233干重。万吨/公顷，占总凋落物量的85.7%。细凋落物主要为上层落叶（约64%）。用Davis网格法绘制了细凋落物总量及其两个主要成分A.阔叶树（36.1%）和落叶阔叶树（36.7%）。枯落物异质斑块的镶嵌分布似乎与冠层结构的分布相对应。
Spatial dispersal patterns of fine litter were analyzed in relation to forest structure within a temperate mixed stand, in northeastern Japan. The canopy layer was a mosaic of two types of patches, those of shade-tolerantAbies firma(estimated age being 81–146 yrs.) and early successional deciduous broad-leaved trees (about 45 yrs. of age). Litter input to the forest floor was observed for a period of three years using 38 traps set at a height of 1.2 m. The average annual total of fine litter was 6.233 (dw.) metric tons hectare-1, 85.7% of the total litterfall. Fine litter was mostly leaves from the overstory (about 64%). Litter distribution maps were drawn, using the Davis's grid method, of the total fine litter and its two main elements, namelyA. firma(a 36.1% share) and deciduous broad-leaved species (36.7%). The mosaic distribution of heterogeneous patches of litter was seem to corresponded with distribution of the canopy structure.