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引言森林面积、蓄积量、林木生长状况,森林演替等动态变化及其发展趋势一直是人们普遍关注的问题。应用不同时期的遥感资料复合对比分析统计,在短时期内弄清森林资源动态,特别是森林面积的动态变化,并用马尔可夫链进行科学预估,分析其发展趋势无疑是有益的。笔者参加了“三北防护林遥感综合调查”甘青宁类型区的工作,在典型试验区盐池县,应用不同时期航空像片对盐
INTRODUCTION Dynamic changes such as forest area, stock volume, tree growth status and forest succession, and their development trends have always been a common concern. Applying comparisons and statistics of remote sensing data in different periods, it is undoubtedly beneficial to clarify the dynamic changes of forest resources, especially the dynamic changes of forest area in a short period of time, and make a scientific prediction by Markov chain. The author participated in the “Three North Shelterbelt Remote Sensing Comprehensive Survey” Gan Qingning type area work, in the typical experimental area Yanchi County, the application of aerial photographs of different periods of salt