Method for roughly calculating photosynthetic efficiency of leaf surfaces of clonal China firs

The invention discloses a method for roughly calculating photosynthetic efficiency of leaf surfaces of clonal China firs. The method is carried out on the basis of the following six indexes: large samples, high precision, selection of a suitable formula, selection of ages of samples, accurate sample classification and sample felling time. The pure photosynthetic efficiency of the clonal China firsis roughly calculated according to a principle of plant photosynthesis mainly, and the problem of pure photosynthetic efficiency per year of leaf area of forest stand of forest establishment of the clonal China firs is solved. By the method for roughly calculating photosynthetic efficiency of leaf surfaces of clonal China firs, research on pure photosynthetic efficiency per year of leaf area of mature forest stand of the clonal China firs is involved in China for the first time. 本发明公开了种无性系杉木叶面光合效益·年的概算方法，该方法按大样本、高精度、选用合适公式、样本选择年龄、准确样本分级和样本伐倒时间6个指标来进行的。本发明主要是根据植物光合作用的原理来概算出无性系杉木的纯光合效益，解决了无性系杉木成林林分叶面积的纯光合效益·年的问题。本发明是我国