Role and Status of Pioneer Species in the Dynamics of the Mixed Dipterocarp Forests

先锋物种在龙脑香混交林动态中的作用和地位

基本信息

批准号：
02041071
负责人：
YAMAKURA Takuo
金额：
$ 8.64万
依托单位：
Osaka City University
依托单位国家：
日本
项目类别：
Grant-in-Aid for international Scientific Research
财政年份：
1990
资助国家：
日本
起止时间：
1990 至 1991
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-02041071/
关键词：
Mixed Dipterocarp Forest community Species Diversity Community Structure Community Dynamics Pioneer Life Strategy South-east Asia

项目摘要

Mixed dipterocarp forest is a symbol of wild nature in Asian tropics and is characterized by the great species diversity, tall architecture, and big local variations within the forest. Major professionals in tropical forest researches in the world become aware of the necessity of the long-term ecological research of the forests by establishing the large ecological plots with sizes such as 50 ha, for understanding the forests as they really are. This research project was carried out as a preparation for the long-term and large scale ecological research of the mixed dipterocarp forest in Sarawak through the following activities : 1) the establishment of the 50 ha plot, 2) mapping, forest inventory, and herbarium collection of living trees with DBHs over 1.0 cm, 3) the analysis of species diversity, forest structure, and community dynamics, 4) the comparison of life strategies among pioneer tree species, and 5) synthetic and ecological discussions about the role and status of pioneer species in the dynamics of mixed dipterocarp forest.To demarcate the 50 ha plot with a reliable accuracy, we used an electronic tacheometer. The closure error of the plot was 1.0 m in forest survey. The plot was very complex in topography and included various habitats for plants. The 10 ha forest inventory was done during two year research activities. Pioneer species is short lived and grew faster than climax species, depended their regeneration on canopy gaps, had not effective anti-herbivory substances in leaves, and adopted seed bank strategy using toxic seed coat substances.

混合的双翼森林是亚洲热带地区野性自然的象征，其特征是物种多样性，高大的建筑和森林内的大量局部变化。世界上热带森林研究的主要专业人员通过建立具有50公顷尺寸的大型生态地块，以了解森林的长期生态研究的必要性，以理解森林。这项研究项目是为准备砂拉越混合二翼林林的长期和大规模生态研究的准备，通过以下活动：1）建立50 ha图，2）映射，森林库存和生存树的生存树木与DBH的生存树的收集在1.0 cm上以1.0 cm超过1.0 cm，3）种类的分析，3）种类的分析。关于先驱物种在混合型二翼森林动力学中的作用和状态的综合和生态讨论。要以可靠的精度将50公顷的图划定，我们使用了电子速度计。在森林调查中，该地块的封闭误差为1.0 m。该图在地形中非常复杂，包括植物的各种栖息地。 10公顷的森林清单是在两年的研究活动中进行的。先锋物种的寿命短，比高潮物种更快，取决于它们在冠层间隙上的再生，没有有效的抗植物物质，并采用了使用有毒种子外套物质的种子库策略。