杉木立地生产力的Fuzzy预测

• 作 者: 倪焱
• 机 构: 浙江省林业勘察设计院
• 出 处: 福建林学院学报
• 发表日期: 1988年03期
• 关键词: 杉木林 Fuzzy 杉木生长 立地因素 优势木 地位指数 隶属函数 立地条件 贴近度 适宜度

本文根据Fuzzy数学原理,介绍一种按立地条件适宜度对杉木的立地生产力水平和杉木林分优势木平均高进行预测的方法。首先确定立地因素适宜杉木生长的隶属函数,然后将林地的一系列立地因素数据转换为一组Fuzzy集合,从而根据Fuzzy贴近度原理,确定杉木林地的立地生产力水平。再以杉木的地位指数为依据,并根据数理统计原理,对各林龄的杉木林分优势木平均高进行预测。

In this paper, according to the principle of Fuzzy mathematics, this paper introduces a method to predict the site productivity of Chinese fir and the average height of dominant wood of Chinese fir according to the site suitability. Firstly, the membership function of site-suitable fir growth was determined, and then a series of site factors data of forest land were converted into a set of fuzzy sets. According to the principle of Fuzzy closeness, the site productivity of Chinese fir woodland was determined. Based on the status index of Chinese fir, the average height of dominant wood of Chinese fir stands was predicted based on mathematical statistics.