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一、我国森林资源调查技术的发展过程建国后,为了保护森林,发展林业,合理开发利用森林资源,满足社会主义建设和人民生活对林产品的需要,中央林业部和部分多林省(区)、从一九五○年起相继建立了森林调查设计队伍。当时由于受到技术水平和测绘资料等条件的限制,森林资源调查采用的是很粗放的“方格区划法”,即用测线距离控制山河位置,勾绘小班界线;沿林班线,调查线带状测树,推算小班每公顷蓄积量,用这样方法连续五年时间调查了东北林区的长白山、小
First, the development of China’s forest resources survey technology After the founding of the PRC, in order to protect the forest, forestry development, rational development and utilization of forest resources, to meet the socialist construction and people’s livelihood needs of forest products, the Central Forestry Department and part of the province (area) , From 1950 onwards have established a forest survey and design team. At that time, due to the limited technical level and the restriction of the mapping data, the forest resource survey adopted a very extensive “grid division method”, which used the survey line distance to control the mountain and river positions and draw the outline of small classes. Along the Linban line and the survey line Strip tree measurement, calculate the volume of small classes per hectare, with this method for five consecutive years investigated the Changbai Mountains in the northeast forest, small