Response of Bornean rainforest ecosystems to global change

本研究旨在建立热带雨林生态系统监测系统和站点，为IGBP-GCTE“全球变化对季风亚洲陆地生态系统的影响”（TEMA）核心研究项目提供支持。整个东亚林带的TEMA监测网络是通过在婆罗洲岛建立低地热带雨林站点来完成的。这项研究是在印度尼西亚和马来西亚同行的全力支持下合作进行的。印度尼西亚婆罗洲加里曼丹中部的一个地点的特点是区域营养不良系统，即石南林和泥炭沼泽林。我们在帕朗卡拉亚东北20公里的拉黑遗址建立了4个永久性样地和1个研究小屋，对这些生态系统进行了树木普查，并设置了凋落物陷阱和凋落物袋。定期开展温室气体排放监测。为了研究陆地生态系统的大区域特征，还进行了初步的陆地水调查。在沿海生态系统方面，在马来西亚婆罗洲沙巴州的Tabin国家公园建立了研究站，在沙巴州Kinabalu山国家公园对高海拔森林系统进行了监测。2月初在札幌举行的一次专题讨论会讨论了目前与TEMA有关的活动，4名成员参加了3月中旬在巴塞罗那举行的GCTE-LUCC会议，报告了目前的活动。

This research was organized to establish the monitoring systems and stations in tropical rainforest ecosystems, to contribute to a core-research program "Global change impact on terrestrial ecosystems in Monsoon Asia "(TEMA) of IGBP-GCTE.TEMA monitoring network across East-Asian forest belt is accomplished by the establishment of lowland tropical rainforest sites in Borneo Island. This research was carried out under the collaboration with Indonesian and Malaysian counterparts' full support.One site in Central Kalimantan, Indonesian Borneo, was characterized by regionally nutrient poor systems, i.e.heath forest and peat-swamp forest. We established four permanent plots and one research hut on these ecosystems in Lahei site, 20-km NE from PalangkaRaya, where we carried out tree census and set litter traps and litter bags. Monitoring of the emission of greenhouse gasses was regularly carried out. To examine a lager-area characteristics of terrestrial ecosystems, preliminary land water survey was also conducted.For coastal ecosystems, research station was established in Tabin National Park in Sabah, Malaysian Borneo, and high-altitude forest systems were monitored in Mount Kinabalu National Park in Sabah.One symposium held in Sapporo early in February covered present activities in relation to TEMA,and four members participated in the GCTE-LUCC Conference in Barcelona in mid March, reporting the present activities.