The paper, taking Wuxi as the case, using multi-resources satellite imageries and other supplementary data, extracts URIA boundaries of four years (1984, 1991, 1998, and 2001).

• 本文以无锡市为例，采用多时相多源遥感数据与其它辅助信息，提取出1984、1991、1998与2001年城乡结合部范围。