Studies on regional difference for thermal influence about forest

摘要本研究旨在利用卫星资料探讨森林砍伐热力影响之区域差异。利用Landsat TM数据计算了土地利用与地表温度的关系，并建立了1x 1 km网格土地利用率与1x 1 km网格平均地表温度的多元回归方程。3）计算标准多元回归方程，比较森林砍伐的区域差异。利用Landsat TM数据对北海道（托迈科迈、萨罗别图）、关东（高知）、四国（高知）和九州（阿索）的地表温度进行了分析，结果表明：1）森林地区地表温度最低，城市地区地表温度最高; 2）关东（高知）和四国（高知）的标准回归系数除北海道（萨罗别图）外，其余数据均为常数。我们认识到，森林砍伐的热影响是能够比较usig标准回归系数。标准回归系数的范围为：Tomakomai、Kouchi和Kouchusa。

The purpose of this study is the regional difference for thermal influence of deforestation usig satellite data. The analyses are performed as follows ; 1) the relationship between land-use and surface temperature are calculated using Landsat TM data, 2) multi-regression equations between the rate of land-use for 1x1 km mesh and mean surface temperature for 1x1 km mesh are calculated. the equations express estimation of surface temparture, when land-use change, 3) standard multi-regression equations are calculated for comparison between the regional difference of deforestation. Landsat TM data are used for the analysis about Hokkaido (Tomaikomai, Sarobetu), Kantou (Fukusa), Sikoku (Kouchi) and Kyuushuu (Aso).The results are obtained that 1) the estimated surface temperature is the lowest on forest and the highest on city areas, 2) standard regression coefficients are constant for Kantou (Fukusa) and Sikoku (Kouchi) through all data but Hokkaido (Sarobetu). We recognized that thermal influence of deforestation is able to compare usig standard regression coefficients. Tlie range of standard regression coeficient is Tomakomai, Kouchi and Fukusa.