一、引言 当前在林业中存在的严重问题是生态环境恶化和木材短缺仍在继续发展。因此,必须提高林业的生产力,必须采取更集约化的经营。而森林资源的现状,就必须更为精确地加以测定。因此,有关方面都在积极地探索效率更高的森林调查技术。利用遥感资料结合抽样的森林资源调查技术,不断得到发展,特别是利用遥感信息进行多阶不等概抽样。因为这种方 I. Introduction The current serious problems in forestry are the deterioration of the ecological environment and the continuing shortage of timber. Therefore, we must raise the productivity of forestry and must adopt more intensive management. The status of forest resources must be measured more precisely. Therefore, all relevant parties are actively exploring more efficient forest investigation techniques. The use of remote sensing data combined with sampling of forest resources survey technology continues to be developed, especially the use of remote sensing information for multi-level unequal sampling. Because of this party