Spatio-temporal Characteristics of Land Use and Cover Change in Guangzhou City in the Past 30 years
Spatio-temporal Characteristics of Land Use and Cover Change in Guangzhou City in the Past 30 years
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发表时间：
2009
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通讯作者：
Chen Jian-fei
中科院分区：
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作者：
Chen Jian-fei
Four TM remote sensing images of Guangzhou in 1979,1990,2002 and 2006 are taken as data for the study.The images fully cover the area of Guangzhou.The data sources of land-cover landscape are translated under supervised and un-supervised interpretations with Envi4.4.By using ArcGIS 9.2 software to extract urban land use speckle and contrast land use map of Guangzhou City.Through investigation to create land use database,the analysis demonstrated spatio-temporal characteristics of land use so as to improve urban eco-environment and land use efficiency.The research demonstrates that forest and water area increase during the past 30 years and environment protect policy has the obvious effect.The ratio of land use to cover change has the characteristics of fast in beginning and slow in recent years.In the 1979-2002 the change of land use was rapid and the average change rate was 36.55%.In the 2002-2006,with the improvement of protect environment and other policy induces the ratio of land use turned into be stable.
