【摘要】 为给喀斯特地区城市发展中土地资源供需矛盾处理、政府决策等提供参考,在RS和GIS技术的支持下,应用1986年、1995年和2000年三期TM影像以及2006年CBERS-01影像,得到贵阳市4期土地利用/覆盖现状。选取分维度指数、斑块数、土地利用多样性指数、土地利用优势度指数、土地利用均匀度指数、土地利用破碎度指数和景观分离度等具有典型生态意义的景观格局指数,对贵阳市景观格局变化进行分析,探索其演变机制。结果表明:1)景观格局指数变化趋势不同,有增–增–减型(景观分离度和土地利用破碎度指数)、减–增–减型(分维度指数、土地利用多样性指数和土地利用均匀度指数)和增–减–增型(土地利用优势度)。2)各时段景观格局变化不同。1986—1995年,景观破碎化程度和团聚程度均增加;1995—2000年,景观破碎化程度增加,团聚程度减弱;2000—2006年,景观破碎化程度减弱,团聚程度增加。更多还原

【Abstract】 In order to provide a reference for imbalance management between land supply and demand and government decision-making,based on RS & GIS,four present situations of land use and cover of Guiyang were obtained from TM image(1986,1995and 2000)and CBERS-01(2006).The landscape pattern indices with typical ecological significance,including fractional dimension index,patch number,land-use diversity index,land-use dominance index,land-use evenness index,land-use fragmentation index and landscape isolation degree,were selected for analyzing landscape pattern change of Guiyang and exploring its evolution mechanism.Results:1)The change of landscape pattern indexes was different with three trends,which were increase-increase-decrease(landscape isolation and land-use fragmentation index),decrease-increase-decrease(fractional dimension index,land-use diversity index and land-use evenness index)and increase-decrease-increase(land-use dominance index).2)The landscape pattern change was different.The landscape fragmentation and agglomeration degree increased from 1986to 1995.The landscape fragmentation increased while agglomeration degree decreased from 1995to 2000.The landscape fragmentation decreased but agglomeration degree increased from 2000to 2006.更多还原