Development of monitoring system for the Beech Natural Forests distribution using Landsat Imagery

以山毛榉天然林为研究对象，分析了卫星遥感数据的数字量与林分因子的关系。山毛榉天然林主要分布在山区。然后，非相关性得到了与斜率成比例的较大的数字，校正后的数字不再与斜率成比例增加，验证了校正效果。另一方面，在流苏帽的概念，湿度表现出最高的相关性，每个林分结构和显着的相关性表现在树冠郁闭度和体积的关系。由于树冠郁闭度与山毛榉天然林的结构属性密切相关，因此得到了一个关系式，并根据该关系式对3个等级的郁闭度进行了估算。假定的树冠郁闭度与数字化航空照片显示的树冠郁闭度几乎完全相反。郁闭度低的林分，其林分密度显著降低。因此，指示的立场与低树冠封闭必要的未来管理，并监测山毛榉天然林的可能性，由指示的网站具有低树冠封闭。

Analysis on relationships between the digital numbers of satellite data and factors for forest stands were performed with the object on the beech natural forest. The beech natura1 forest mostly is distributed in mountain areas. Then, bigger digital numbers were obtained in proportion to slopes for the non-correlation and no more increasing digital numbers were in proportion to slopes after the correction, and effects of corrections were verified. On the other hand, Wetness in Tasseled cap concept showed the highest correlation on each stand structure and significant correlations were shown on relationships with the crown closure and volume. Because this crown closure was deeply connected to structural attributes of the beech natural forest, a relational formula was obtained, and crown closures separated into 3 grades from the formula were estimated. The presumed crown closures were almost satisfactorily opposed to the crown closures shown by the digitized aerial photographs. Stands with low crown closures were extremely decreased their stand densities. Therefore, indications of stands with low crown closure necessary for future managements, and of possibilities for monitoring the beech natural forests were made by the indication of sites having low crown closures.