中文摘要：

在RS和GIS技术,FRAGSTATS软件的支持下,应用1990年Landsat TM、2000年Landsat ETM＋和2010年的ALOS/AVNIR-2遥感影像,结合博斯腾湖湿地的区域特点,提取博斯腾湖湿地生态景观格局信息,并选取12种具有典型生态意义的景观指数,对博斯腾湖湿地20年的景观空间格局变化和演变特征进行分析,探索其演变机制。结果表明：湿地面积在研究时段内呈现先增加后减少的趋势。1990-2000年间湿地总面积增加351.8km2,其中人工湿地面积增加34.93km2,自然湿地增加316.87km2;2000-2010年间湿地总面积减少277.34km2,其中人工湿地面积减少28.36km2,自然湿地面积减少248.98km2。从景观整体来看,均匀度指数较低,景观破碎化程度不断增加,景观被湖泊,潮间沼泽和光滩沼泽这三个占优势的景观类型所控制。

英文摘要：

Supported by RS and GIS technology,FRAGSTATS3 · 3 software,using 1990 Landsat TM,2000 Landsat ETM＋ and 2010 ALOS/AVNIR-2 images,combined with the regional characteristics of Bosten lake wetland,the wetland ecological landscape pattern＇s information was extracted,and 12 typical ecological significance landscape index were selected,landscape pattern changes and evolution characteristics of Bosten lake wetland in the past two decades were analyzed,and evolution mechanism was explored.The results indicated that the wetland increased 351.8km2 during the period 1990-2000,including artificial wetland increased 34.93km2,natural wetland increased 316.87km2,natural wetland accounts for the proportion of the wetland total area reduced 1.38%;During the period 2000-2010,wetland area decreased 277.34km2,of them artificial wetland reducing 28.36km2,natural wetland reducing 248.98km2.Landscape,evenness index was at the low level,landscape fragmentation degree increasing and dominant landscape types was lake,intertidal marsh and mudflat swamp.