中文摘要：

基于ArcGIS平台,根据建立的内蒙古湿地遥感分类体系,采用人机交互式解译提取内蒙古1993和2013年湿地信息,从湿地组成分布、空间格局角度分析了内蒙古20年来湿地系统动态变化特征。结果表明,内蒙古湿地类型包括河流、湖泊、沼泽、湿草甸、盐生草甸和人工湿地,不同流域占支配地位的湿地类型各不相同,西辽河流域和黄河流域湿地破碎化最为严重且有加剧趋势,是研究区湿地退化程度最为严重的区域;20年来,内蒙古湿地面积由1993年的42 188.75 km2减少至2013年的38 912.76 km2,减少了7.77%。内蒙古湿地的演变趋势表现在湿地与非湿地、各类型湿地之间的相互转换,其中大部分类型湿地主要向非湿地和盐生草甸这类退化湿地类型转变。

英文摘要：

This paper refers to wetland information of Inner Mongolia during the period from 1993 to 2013 that was extracted on the basis of Arc GIS platform and aid by man-machine interactive interpretation,by which the dynamically changing characteristics for the past 20 years were analyzed,including component and spatial distribution pattern of the wetlands in Inner Mongolia. Findings of the information suggested that the types of wetland in Inner Mongolia were composed of river,lake,marsh,wet meadow,salt meadow and artificial wetlands;the dominant type of wetlands varied from one river-basin to other ones,and wetlands on the West Liaohe River and the Yellow River basins tended to being increasingly fragmented. To sum up,the total area of wetlands was 42 188.75 km2 in 1993,but decreased to 38 912.76 km2 in 2013,a decline ratio of 7.77%;meanwhile,evolution trend of the type of most wetlands indicated the degradation of wetland habitats,e.g. wetland degraded to non-wetland,and wet meadow to salt meadow.