【摘要】 以闽江流域生态公益林为研究对象,应用遥感技术,构建林地专家分类系统,辅于目视解译,实现1986年、2000年和2003年闽江流域生态公益林森林资源专题信息的提取,并对近18 a的森林资源变化状况作了分析。研究结果表明,1986~2003年闽江流域生态公益林各林地类型中变化最大的是灌木林和阔叶树林的面积呈负增长,杉木林和马尾松林的面积呈逐年增加,1986年、2000年、2003年的阔针比例分别为1∶1.45、1∶2.56、1∶2.59。更多还原

【Abstract】 The special topic information on the public ecological forest resources in Minjiang Watershed in 1986,2000 and 2003 was worked out with the help of the woodland expert classification system established by the RS technology and visual interpretation.The change of about 18-year-old forest resources was analyzed in the study.The results showed that the most change were the area of the shrub land and the broadleaf woodland which were decreasing but the area of China fir and pinus massoniana woodland increased annually.The rate of the area of broadleaf stands to conifer ones in 1986,2000 and 2003 were 1∶1.45,1∶2.56 and 1∶2.59,respectively.更多还原