This study focuses on the structure of geographical conditions, the riverbed, the meterological and atmospheric examination, the ecological environment, the food chain and the ecosystem, in order to establish a basic plan for preparing a natural learning area of environmental ecosystem in Bukchun and its surroundings, Gyeongju. The results could be summarized as follows. Bukchun is a first grade which extends 6km along the road from Bomun bridge to the junction of Hyungsangang. The basin area is 7.10km2 and the slope is 1/200~1/300. Gyeongju has good atmospheric conditions, i.e. SO2 0.011 ~0.017ppm, CO 0.8~ 1.5ppm, NO20.013~0.019ppm, o30.013~0.020ppm, TSP 85~142 ㎍/㎥, PM-10 47~90 ㎍/㎥ and Pb 0.057 ~0.129 ㎍/㎥, which is below the annual and daily averages, and is little lower than those of Pohang and Ulsan. The ecosystem of Bukchun is based on the structure of the food chain, which includes birds such as the grey and white herons at the top of the food chain. This study also considers the development of the river s in terms of culture, environment and ecology concept.
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