The main items of this project included expansion of national greenhouse gas inventory database calculating method and system, setting up and updating the greenhouse gas emission in each sector, using greenhouse gas inventory as climate change strategy tool for policy making, preparation for the second version of national communication, integration of greenhouse gas inventory management, all of these tasks have been completed. For the expansion of national greenhouse gas inventory database calculating method and system, this project have participated UNFCCC 22nd SB and 16th Regional Conference of Clean Air and Environment in Asia Pacific Area, as well as working with National Institute of Environmental Studies, building up the international cooperation, bringing in international greenhouse gas emission methodology and experience to Taiwan. For the calculation of national greenhouse gas emission inventory and preparation of national communication, thirteen meetings were held with relevant authorities for the discussion of the IPCC inventory calculation, request for the related information of the inventory from the authorities and discussion on the possibility to set up a greenhouse gas inventory center. 1990-2004 greenhouse gas inventory was updated, the total greenhouse gas emission in 2004 was about 296 million tones CO2 equivalent, which presented an annual growth rate of 4.7%. Apart from that, according to IPCC guidelines, a demonstration of the measurement of uncertainties in the inventory was used although some of data were default values from IPCC. As mentioned in the IPCC, the tier two method was used to calculate uncertainty of greenhouse gas emission in energy sector, which has obtained 5.0%. For the agriculture sector, uncertainty is 22.3%. Analysis of Variance was used to obtain the key category in the inventory and the results showed that energy industries, manufacturing industries and transport were the three main key categories. For the integration of greenhouse gas inventory management task, this project operated in coordination with Environmental Protection Administration, industries, transportation, residential and commercial inventory projects, combined the experiences from other countries, greenhouse gas emission benchmark is provided for industries greenhouse gas inventory certification and management system. This system forms a data chain, which could be connected to industries, authorities, inventory center, Environmental Protection Administration, National Council for Sustainable Development in Executive Yuan. This project provided the results analysis and formed a complete set of administrative process, which also presented concrete approach for policy maker.

greenhouse gas emissions inventory,uncertainty,key category analysis,Monte Carlo Analysis,United Nation Framwork Convention on Climate Vhange