본 연구는 대전분지에 있어서 청동기시대에서 원삼국시대로의 이행과정에서 나타나는 주거지의 지리적(또는 지형적) 입지환경 변화와 그 원인을 밝히는 것이다. 이를 위하여 ①``유적그룹(또는 주거지밀집유적)의 주거지 총 수 비교`` 그리고 ②``두 시대의 주거지를 모두 포함하고 있는 특정유적에서 주거지 총 수 비교``로 구분하여 시대변천에 따른 주거지의 표고, 경사도, 용수하천거리 및 용수하상비고 측면에서 입지환경을 상호 비교하였다. 그 결과는 다음과 같다. 1. 개별 인자의 변화를 보면, 표고는 상승했으며, 경사도는 증가했다. 용수하천거리는 소급하천의 경우 감소 내지 증가했으며, 중급하천의 경우 거의 차이가 없거나 증가했다. 그리고 용수하상비고는 소급하천의 경우 증가했으며, 중급하천의 경우 증가 내지 감소했다. 2. 개별 인자를 상호 비교하면, 경사도, 표고 및 용수하상비고의 증감이 대체로 유사한 경향을 띠며, 특히 경사도의 증가가 표고와 용수하상비고의 증가에 영향을 미치는 것으로 나타났다. 그리고 용수하천거리의 증감은 경사도, 표고 및 용수하상비고의 증감과 다른 경향을 나타내는 것으로 나타났다. 3. 이상으로부터 대전분지 내에 분포하는 저구릉의 미지형적 특성(예: 경사도 특성)과 저구릉을 둘러싸고 있는 풍부한 수계환경이 서로 맞물려 당시의 주거지 입지선정에 영향을 미쳤다는 것을 알 수 있었다. 특히 당시 거주민들에게 주거지 입지 선정시 ``경사도와 용수하천거리``가 ``표고와 용수하상비고``에 비해 상대적으로 중요한 주거지 선정 인자였던 것으로 밝혀졌다.

The purpose of this study is to identify the change of geographical (or geomorphological) location environment of the dwelling site and its cause in Daejon Basin during transition from the Bronze Age to the Proto Three Kingdoms Period. In order to achieve this goal, it was divided into ① ``omparison of the total number of dwelling sites of a group of remains (or high-density dwelling remains)`` and ② ``omparison of the total number of dwelling sites in certain remains including locations of dwelling of two periods`` and location environment was compared to each other in aspects of altitude, gradient, ``istance from the river of water available for use`` and ``he difference between the highest altitude and lowest altitude of river bed of water available for use`` based on change of period. The results were as follows: 1. looking at a change of individual factors, the altitude was elevated and the gradient was increased. The distance from the river of water available for use was decreased or increased in case of ``mall scale river`` and it was very little difference or increased in case of ``edium scale river`` The difference between the highest altitude and lowest altitude of river bed of water available for use was increased in case of ``mall scale river`` and it was increased or decreased in case of ``edium scale river`` If comparing the individual factors to each other, the increase and decrease of altitude, gradient and the difference between the highest altitude and lowest altitude of river bed of water available for use have the similar pattern. Especially, it was shown that the increase of gradient affected the increase of altitude and the difference between the highest altitude and lowest altitude of river bed of water available for use. In addition, it was shown that the increase and decrease of distance from the river of water available for use had the different pattern from those of altitude, gradient and ``the difference between the highest altitude and lowest altitude of river bed of water available for use`` 3. With above results, it was thought that combination of micro landform characteristics (eg. Characteristics of gradient) of low hills distributed within Daejeon Basin and rich aquatic environment surrounding the low hills affected the selection of location of dwelling sites at the time. Especially, it was shown that ``radient and distance from the river of water available for use`` were relatively more important factors for the inhabitants at the time to select the location of dwelling sites compared to ``ltitude and difference between the highest altitude and lowest altitude of river bed of water available for use`` upon selecting the location of dwelling.