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

利用陆地卫星图像开发山毛榉天然林分布监测系统

• 批准号: 09660156
• 负责人: ABE Nobuyuki
• 金额: $ 0.51万
• 依托单位: Niigata University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09660156/
• 关键词: Fagus crenata forest; Landsat Imagery; Minnaert function; Crown closure.; Tasseled cap; 二次林; ブナ混交林; GIS; 衛星データ; LANDSAT; 幾何補正; 分類精度; 最尤法; BAND

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.

以山毛榉天然林为对象，分析了卫星数据数字与林分因子之间的关系。山毛榉天然林大多分布在山区。然后，对于非相关性，得到较大的与斜率成正比的数字，校正后与斜率成正比的数字不再增加，验证了校正的效果。另一方面，缨帽概念中的湿度在每个林分结构上显示出最高的相关性，并且与树冠闭合和体积的关系显示出显着的相关性。由于树冠闭合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公式，并根据公式将树冠闭合度分为3个等级进行了估计。假定的树冠闭合与数字化航拍照片显示的树冠闭合几乎完全相反。树冠封闭度低的林分其林分密度大大降低。因此，通过指示低树冠封闭地点来指示未来管理所需的低树冠封闭林分，以及监测山毛榉天然林的可能性。

项目成果

Takuo Nagaike: "Factors Affecting Changes in a Landscape Structure Dominated by Both Primary and Coppice Forests in the Fagus crenata Forest Region of Central Japan" J.For.Res.2. 193-198 (1997)

Takuo Nagaike：“影响日本中部水青冈林区原始林和矮林主导的景观结构变化的因素”J.For.Res.2。

Takuo Nagaike: "Factors Affecting Changes in a Landscape Structure Dominated by Both Primary and Coppice Forests in the Fagus crenata Forest Region of Central Japan" Journal of Forest Research. 2. 193-198 (1997)

Takuo Nagaike：“影响日本中部水青冈林区原始林和矮林主导的景观结构变化的因素”森林研究杂志。