HJ-1卫星数据在上海城市扩张动态监测中的应用

城市扩张的动态监测,是区域城市化和可持续发展评价的重要内容.以上海市为研究区,利用2009年的我国HJ-1卫星遥感数据进行土地利用分类,获得了上海市(市区及下属各区县)1∶10万土地利用分类现状;结合已有的2000年和2005年的土地利用分类数据,对上海市土地利用变化情况,特别是城市建设用地变化进行了计算和分析,对照统计数据和资料,探讨了城市扩张的现状、过程、趋势和驱动力.研究表明,HJ-1A/B卫星具有30 m的空间分辨率和2 d的重访周期,在区域城市化发展的动态监测中具有很大的应用潜力.

Application of HJ-1 Satellite Data to Dynamic Monitoring of Urban Expansion of Shanghai

The dynamic monitoring of urban expansion plays a key role in assessing regional urbanization and sustainable development.Taking Shanghai as a case in point,we extracted land use classification of Shanghai（urban and sub-districts and counties）at 1∶100,100 scale from HJ-1 satellite remote sensing data in 2009.Land-use change of Shanghai,especially the urban construction land-use change,was calculated and analyzed based on the HJ-1 derived land use data of 2009 together with the existing data of the year 2000 and 2005.The current situation of urban expansion,processes,trends and driving forces were discussed with statistical data and information.The study indicated that HJ-1A/B satellite,which has a spatial resolution of 30 m and 2-day re-covering,has a great potential in the dynamic monitoring of regional urbanization.