日本森林火灾相关数据的分布研究

为了构建森林火险分级系统，需要对森林火灾、气象参数、人口和树种参数进行详细分析。这些参数的原始数据都是一些离散的记录，如果将它们合理地分解成详细数据是数据分析中的核心工作之一：该文研究了日本全国范围内森林火灾及其相关数据的分解方法。在日本的格点分级系统中，日本领土按照经纬度分为大小近似相同的格点，一个三级格点的大小约为一平方公里。我们尝试将1999年和2000年的火灾相关参数的原始数据利用简单的三点反距离加权插值方法分解到三级格点上，并对分解的结果进行了分析。本文工作展示了日本森林火灾及其相关参数的基础数据，可供森林火灾研究人员参考；数据分解的结果对进一步的数据处理和火险分级系统的最终构建具有推进作用。

Distribution Analysis of Forest Fire Related Data in Japan

To build the forest fire rating system, detailed data of forest fires, weather parameters, population and tree species are required. Because these data are all scattered in raw format, how to expand them into more detailed data is one of the key problems. In this paper, expansion of Japan data is studied. The mesh code system in Japan is introduced, in which the Japanese territory is divided into meshes by latitude and longitude. All meshes are of approximately same size. The scale of the third-level mesh is about 1km by 1km. After obtaining the raw data, a simple method is used in the paper to process forest fire related data from 1999 to 2000, in which the data at arbitrary site is calculated by inverse distance weighted interpolation. Expansion results for third-level meshes are demonstrated and analyzed. The data demonstrated in the paper can be a reference for researchers, and the processing results will promote further data analysis and the development of fire rating system.