一、前言如何培育优质林这一问题,可以说一直是林业工作者们所要攻克的课题。以往,林况诊断也被喻为医学上的临床诊断,一般来说,就是经验丰富的专家们如果不进山搞详细的调查,在很多情况下也不能做出确切的诊断。然而,从技术普及这一角度来说,当然希望这个林况诊断表对任何人都易于理解,也易于实地应用。但因生育在各种立地条件下的林相,是除了该林地的地质、地形、土壤及气象条件外,还受苗木的品系、林龄,株数密度,尤其是经营沿革等条件综合作用的结果,其类型是多种多样 I. Preface How to cultivate high-quality forest can be said that it has always been a topic for forestry workers to overcome. In the past, forest disease diagnosis has also been described as medical clinical diagnosis, in general, is experienced experts do not engage in a detailed investigation into the mountains, in many cases can not make an exact diagnosis. However, from the perspective of technology popularization, of course, it is hoped that this forest diagnosis table will be easy to understand to anyone and easy to apply in the field. However, because of the fertility in various habitats, the forest facies is the result of the combined effect of the seedling’s lineage, age, plant density, especially the management history, in addition to the geological, topographical, soil and meteorological conditions of the forestland, Its type is varied