中文摘要：

为揭示快速城市化下,武汉市进入21世纪最初的12年来生态用地的时空演变规律,以武汉市2000年、2005年和2011年Landsat TM/ETM＋遥感数据为数据源,在景观格局分析的基础上,通过景观组分转移矩阵和景观不稳定斑块分析方法定量研究生态用地景观演变的数量、结构特征和变化方向,并采用景观破碎度和景观连通性指标反映生态用地空间格局特征。结果表明：从数量结构来看,2000-2011年,伴随建设用地的快速扩张,武汉市生态用地面积继续减少。水域作为生态用地的第一大景观,优势度不断降低,而林地和未利用地在生态用地中的比重有所上升。相比于生态用地内部的转换,生态用地与非生态用地转入转出愈发频繁,林地和水域稳定性差,大面积转化为农田。从空间分布来看,武汉市生态用地主要集中在黄陂区和江夏区,中心城区的生态用地持续大量减少,林地和未利用地的空间破碎化程度不断增加,斑块被分割为破碎状态且边界复杂,受人类活动干扰大。除江夏区外,其他城区生态用地的空间连通性急剧下降,生态用地孤岛化。研究成果对科学规划城市生态廊道,建设生态环境友好型城市具有一定的指导意义。

英文摘要：

Under fast urbanization,to better understand the landscape patterns of ecological land-use in Wuhan,based on the Landsat TM/ETM ＋ remote sensing images in 2000,2005 and 2011,this paper tries to analyze the composition and structure changes,and spatial features including fragmentation and connectivity indices of ecological land-use.The result shows that：1From composition and structure perspectives,from 2000 to 2011,with the expansion of construction land,the amount of ecological land-use continues to decrease.Urban water remains the most advantageous ecological land-use,although the landscape dominance index of urban forest and urban unutilized land increases.The interchanges between ecological land-use and non-ecological landuse are more and more frequently and severely,especially urban forest and urban water has transformed to agricultural land substantially.2In terms of spatial features,the ecological land-use in Wuhan is mainly distributed in Huangpi and Jiangxia districts and the amount in central urban area drops greatly.The degree of fragmentation of urban forest and urban unutilized land gradually increase under the impacts of human activities.Except Jiangxia district,all the other urban areas have lower connectivity index value,which means ecological land-use tends to separated and isolated with each other.The research contributes to instructing urban ecological planning and providing suggestions to build environmental-friendly city.