回顾我国历次的森林资源调查,对树种的划分都较粗放,尤其是阔叶树种。应该认为,分别树种统计蓄积量是资源调查的基础工作,而这一点与当前引进的先进技术手段是极不相称的。例如:南方调查,仅将树种归纳为:杉、马、阔、竹、东北则归纳为落、白、柞、阔,甚至更简单:针、阔、混。这对提高经营管理水平与资源的利用率是很不利的。在“四·五”清查中,对用材林中龄以上组成树种的蓄积,分别统计了水曲柳、樟、楠、檀、檫、 Recalling the previous forest resources survey of our country, the classification of tree species is more extensive, especially broad-leaved tree species. It should be considered that the stocking volume of tree species separately is the basic work of resource investigation, which is extremely disproportionate to the current advanced technology means. For example: Southern investigation, only the tree species summarized as: cedar, horse, wide, bamboo, northeast is summarized as falling, white, oak, wide, even more simple: needle, wide, mixed. This is to improve the level of management and resource utilization is very negative. In the “April 5” inventory, statistics were made on the accumulation of tree species of middle-aged and above composition in timber stands, such as Fraxinus mandshurica, Camphor, Nan, Tan,