Because the photosynthesis ability of old artificial forest stands is inferior to that of young stands, the utilization of these logs is benefit to the sequestration of carbon dioxide. Hence, construction of wooden patios, trails, and retaining wall to substitute concrete ones could reduce the carbon dioxide emission in Taiwan. According the research data, the energy consumption during wood processing was very low, so did the carbon dioxide emission. Because concrete was replaced and about 50% of wood consists of carbon which is from carbon dioxide sequestration, both the utilization of wood and artificial forest planted could reduce the carbon dioxide concentration. The purpose of the study was to evaluate the effects of carbon dioxide emission and sequestration by using wooden structure in both wooden leisure and eco-technological facilities. Results shown when check dam constructed by ACQ treated Japanese cedar following O&D (outdoor) method and CNS3000 K4 criterion with 40 years lifetime could reduce about 30 tons of carbon dioxide emission, which is equivalent to the carbon dioxide expiration of 92 persons per year. On another case, 61 tons of carbon dioxide emission was reduced, which is equivalent to the carbon dioxide expiration of 190 persons per year. If the high energy consumption materials, such as steel and cement, could be substituted by wood or wooden material, it could be beneficial to the sustainable management of the earth environment. (C) 2008 Elsevier Ltd. All rights reserved.