鄂温克族自治旗土地利用景观格局变化研究

在RS和GIS技术的支持下,以1992年和2002年TM遥感数据为数据源,利用斑块面积、形状、优势度、景观破碎度、土地利用的变化以及各种景观类型之间转换等景观特征指标,从多个层面对鄂温克族自治旗景观特征及其动态变化进行了研究。结果表明:在10a时间内,研究区域景观特征发生了很大变化,农业用地和建设用地迅速增加,与此同时,伴随着经济的迅猛发展和城镇化进程的加快,林地、草地和湿地等景观类型都出现了不同程度的退化,其中以高覆盖度草地、中覆盖度草地和河滩地最为明显。

Research On the Land Use and Landscape Type Changes of Ewenke Autonomous County

In the support ofRS and GIS,using remote sensing data in 1992 and 2002 as the data source,and some landscape feature indicators such as patch size,shape,preponderance degree,land use change and the conversion between the various landscape types and so on to study the landscape features and dynamic changes of E wen ke autonomy county from various levels.The results show that in the period of these ten years,great changes have taken place on the landscape features in the study area,the agricultural land and construction site rapidly grow,at the same time,as the rapid economic development and urbanization process accelerated,the forestland,grassland and wetland landscape types are showing varying degrees of degradation,and the high coverage grassland,moderate coverage grassland and river bottomland to the most obvious.