基于地理国情普查成果的城市建成区绿化覆盖快速化提取研究

Study on Rapid Extraction of Greening Coverage in Urban Built-Up Area Based on Geographical Conditions Census

城市绿化覆盖是地表自然要素的重要指标,也是城市生态文明的体现,随着城市化的高速发展及环境变化,城市绿化空间分布及其使用功能受到高度重视。据此,作为地理国情普查拓展调查内容,基于地理国情普查成果,应用国产遥感卫星影像数据,采用遥感影像处理技术、城市绿化覆盖自动提取技术和景观格局分析技术,快速提取了城市建成区绿化覆盖现状并开展景观格局分析。所提方法可快速、全面地研究城市绿化用地组成及景观格局,评价城市绿地分布的合理性,为城市绿地空间布局优化提供建议,为城市绿地规划建设提供科学数据,为政府城市管理提供决策依据。

Urban green coverage is not only an important indicator of the natural elements of the surface,but also the embodiment of urban ecological civilization.It is highly valued for urban green space distribution and the use function with the rapid development of urbanization.So that,as the extended investigation of geographical conditions census,based on the results of geographical conditions census,it used the domestic satellite data,combined with remote sensing image processing technology,green coverage automatic extraction technology and landscape analysis technology,the quickly extraction of the green coverage and carry out landscape pattern analysis in urban built-up area is put forward.The composition and landscape pattern of urban greening and evaluate the rationality of urban green space distribution,the suggestions for the optimization of urban green spatial distribution,the scientific data for urban green space planning and construction,and the decision-making basis for government management is provided.