Study of maintenance mechanism of biodiversity in tropical rainforests of Borneo

为了研究婆罗洲岛生物多样性的维持机制，我们在Merimbun遗产公园进行了研究。京那巴鲁、沙巴、西加里曼丹的Betung Kerihun国家公园和东加里曼丹的Berau共257天。我们在文莱、加里曼丹和1.5公顷的土地上分别进行了4公顷、6公顷和1.5公顷的植物生态研究，共采集了2733个植物标本。婆罗洲岛的低地以龙脑香科植物为主，但龙脑香科森林种类繁多。每公顷胸径大于4.8cm的树种数在70 ~ 220种之间，沼泽地最少，其次是河岸林，山地林最丰富。对梧桐科、楝科和棕榈科的同属种间的共存机制进行了研究。对棕榈科的利夸拉属（Licuala）和贯众属（Cyrtostachys）的遗传多样性进行了研究。还研究了动物在种子传播中的作用。

To study the maintenance mechanism of biodiversity on Borneo Island, we conducted research in Merimbun Heritage Park, Mt. Kinabalu, Sabah, Betung Kerihun National Park, West Kalimantan, and Berau, East Kalimantan for 257 days. We made plots of 4ha in Brunei, 6-ha in Kalimantan, and 1.5ha for plant ecological study, and collected 2733 plant specimens. Lowland of Borneo Island is dominated by Dipterocarpaceae, but there are many kinds of Dipterocarpaceae forests. The species numbers of trees bigger than 4.8cm in DBH in 1-ha were ranged from ca 70 to 220, lowest in swamp, the second was riverbank forest, and forest on hill was most rich. The mechanism of coexistence was studied in congeneric species of Sterculiaceae, Meliaceae, and Palmae. Genetic diversity was studied in Licuala and Cyrtostachys of Palmae. The role of animals for seed dispersal was also studied.