【摘要】 利用获取的1990、2000、2006年的遥感图像,调查南沙的土地利用状况及1990~2006年的土地利用结构变化构成,并以此作为开展研究土地利用结构分析的基础,建立土地利用类型统计表,分析用地组成结构的动态变化,揭示土地利用结构变化的原因。结果表明,南沙土地覆被类型以耕田、水体为主。在研究期内,建设用地和未利用地急剧增加,农用地、林地、水体面积相应迅速减少,林地和水体在研究期间有明显的变化波动,更突出了环境与经济发展的不可协调性。更多还原

【Abstract】 Using the remote sensing image in 1990,2000 and 2006,the land utilization and situation of land utilization structural change from 1990 to 2006 was investigated,which was guided to develop the research land utilization structure analysis,establish the land utilization type statistical table,analyze the dynamic change of land composition structure and reveal the reasons of land utilization structural change.The result indicated that the Nansha land cover types mainly are farm land and water.Within the study period,construction land and unused land grew sharply;agricultural land,forest land,water reduced rapidly;forest land and water had an obvious change fluctuation,so that the coordination between environment and the economic development were emphasized.更多还原