CAJ | 학술논문

城市边缘区的扩展状况密切关系着城市空间结构和形态的演变。基于1994、2000、2005、2009年4个时期TM影像资料提取出的建设用地数据，通过建设用地扩展强度指数、建设用地扩展规模系数和建设用地密度指标，利用象限缓冲区分析法将大兴区分成8个象限进行扩展分析，研究1994-2009年大兴区建设用地扩展的时空分异特征。分析表明，大兴区在15 a间建设用地剧烈增加，且增加的强度越来越快；各区建设用地密度的差距越来越大，但差距并非均等变大；大兴区建设用地扩展影响因素主要是自然因素、社会经济因素、交通因素与政策因素。
성시변연구적확전상황밀절관계착성시공간결구화형태적연변。기우1994、2000、2005、2009년4개시기TM영상자료제취출적건설용지수거，통과건설용지확전강도지수、건설용지확전규모계수화건설용지밀도지표，이용상한완충구분석법장대흥구분성8개상한진행확전분석，연구1994-2009년대흥구건설용지확전적시공분이특정。분석표명，대흥구재15 a간건설용지극렬증가，차증가적강도월래월쾌；각구건설용지밀도적차거월래월대，단차거병비균등변대；대흥구건설용지확전영향인소주요시자연인소、사회경제인소、교통인소여정책인소。
Expansion of urban fringe has close relationship with urban spatial structure and formation evolution.The expansion of district Daxing in quadrant buffer areas of 8 directions was analyzed based on built-up area data extracted from TM remote sensing images in 1994,2000,2005,2009,in order to study temporal and spatial characteristics of built-up area expansion from 1994 to 2009,by expansion intensity index, expansion scale index and built-up area density.It was found that built-up area in Daxing increased rapidly and its intensity index was progressively higher;Gaps of built-up density in different directions become progressively larger,rather unevenly;The driving factors of built-up area expansion in district Daxing were mainly natural factors,social economic factors,transportation factors and policy factors.