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自然(资源)土地覆盖信息对分析和理解当前的陆地形式,尤其是对面临着环境日益恶化的研究区起着重要的作用。本研究综合应用Aster遥感数据和现地实际情况,完善西班牙Guadalteba地区2001年的土地覆盖图,将精度从47%提高到70%。综合土地覆盖图反映了该地区的植物类型分布和目前的自然(资源)土地覆盖状况。基于该图,自然(资源)土地覆盖图显示了自然(资源)和农业用地的当前分布,灌木土地退化图表明了各种灌木区的分布位置及其退化的不同等级,并作了进一步分析和讨论。最终的成果图揭示,Guadalteba地区许多以灌木分布为主导形式的土地已经被改用为农业和其他用途用地。由于人类活动的干扰而导致该地区大部分土地退化,使灌木覆盖仅占约9%的土地面积。图4表3参8。
Natural (resource) land cover information plays an important role in analyzing and understanding current land-based forms, especially in study areas that are facing deteriorating conditions. In this study, the land cover maps of 2001 in Guadalteba area of Spain were improved by using the Aster data and the current situation in China. The accuracy of the land cover map was improved from 47% to 70%. The comprehensive land cover map reflects the plant type distribution and current natural (resource) land cover in the area. Based on this figure, the natural (resource) land cover maps show the current distribution of natural (resources) and agricultural land, shrub land degradation maps show the distribution of shrub areas and their degradation levels, and are further analyzed discuss. The final outcome map reveals that many of the land in the Guadalteba region, dominated by shrubbery distribution, has been converted to agricultural and other uses. Due to the disturbance of human activities, most of the land in the area is degraded, covering only about 9% of the total land area. Figure 4 Table 3 Reference 8.