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Structure and regeneration dynamics of tropical dipterocarp rain forest in varying degrees of management

不同经营程度热带龙脑香雨林的结构与更新动态

基本信息

批准号：
03041064
负责人：
SUZUKI Eizi
金额：
$ 11.52万
依托单位：
Kagoshima University
依托单位国家：
日本
项目类别：
Grant-in-Aid for international Scientific Research
财政年份：
1991
资助国家：
日本
起止时间：
1991 至 1993
项目状态：
已结题

项目摘要

1. Vegetation of West KalimantanVegetation of Gunung Niut Nature Reserve and its adjacent area West Kalimantan was studied with 24 plots (9.1 ha in total). Plots of 1 ha had 300 to 370 tree species bigger than 15 cm in girth. More than 1300 tree species were found during the study. The dominant family, Dipterocarpaceae had nearly 60 species. Then there were a variety of vegetation.The soil was roughly correlated with the vegetation. The diversity of soil type is much less than that of vegetation. Then the diversity of the latter could not be explained by the former.The flora in three equatorial areas, West Kalimantan, East Kalimantan, and West Sumatra was compared with each other. The common species were only several percents. This result shows the high diversity of this region and the necessity of a lot of study to recognize the vegetation of the whole area.2. Population dynamics Many trees of a natural dipterocarp forest made fruits in 1993. We studied the amount of fruit and establishment of the seedlings of several species. The dominant species of the forest, Dryobalanops beccarii, made 74 fruits/m^2 and 42% of them were sound. The seedlings of 1.8/m^2 were established after one month. These seedlings were tagged and censused periodically in future.3. Forest DynamicsTree growth for 1 or 2 years was measured in 7 plots. The logged forest had many saplings of Dipterocarpaceae. They grew vigorously. The dipterocarp forest will be recovered in future, if the stand will not be disturbed again. Fields after shifting cultivation were usually dominated by Macaranga trees. They were separated into two groups, quick growth trees and no-growth trees. Tengkawang plantation of 100 years old grew steadily. This measurement of tree growth will be also continued.

1. 对西加里曼丹古农纽特自然保护区及其邻近地区的植被进行了研究，共24个样地（共9.1 ha）。1公顷的样地有300 ~ 370种周长大于15厘米的树种。在研究过程中发现了1300多种树木。优势科双龙科有近60种。然后是各种各样的植被。土壤与植被大致相关。土壤类型的多样性远低于植被的多样性。后者的多样性不能用前者来解释。对西加里曼丹、东加里曼丹和西苏门答腊三个赤道地区的植物区系进行了比较。普通物种只有百分之几。这一结果显示了该地区植被的高度多样性，以及对整个地区的植被进行大量研究的必要性。种群动态1993年，某天然龙脑果林多棵树结果。我们研究了几个品种的果实数量和幼苗的建立。优势种贝卡林结果74个/m^2，其中健全果占42%。1个月后建立1.8/m^2的幼苗。这些幼苗被标记并在以后定期进行普查。测定了7个样地1 ~ 2年的树木生长动态。这片被砍伐的森林有许多双龙心科的树苗。它们茁壮成长。如果林分不再受到干扰，龙脑林将在未来得到恢复。轮作后的田地通常以麦卡兰树为主。他们被分成两组，快速生长的树和不生长的树。腾卡旺百年种植园稳步发展。这种对树木生长的测量也将继续进行。