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OALib Journal期刊
ISSN: 2333-9721
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兴安落叶松天然林单木高生长模型
DOI: 10.3969/j.issn.1000-2006.2013.02.031, PP. 169-172
Keywords: 兴安落叶松,天然林,高生长模型
Abstract:
根据31株解析木数据,利用logistic方程和4参数的richards方程拟合了兴安落叶松天然林优势木、平均木和被压木高生长模型,经检验,模型均在0.01水平上显著。对林木年龄(a)、胸径(d)、树高(h)、活枝下高(h1)、死枝下高(h2)进行相关性分析后,发现d、h、h1、h2等在0.01水平上有显著正相关,所拟合的活枝下高和死枝下高的模型在0.01水平上显著。研究表明:logistic方程较4参数的richards方程对兴安落叶松高生长的拟合效果好,它们对优势木、平均木和被压木高生长拟合所得模型的r2分别为0.829、0.758、0.807和0.771、0.668、0.824。以logistic方程对优势木和被压木的拟合效果较对平均木的好。对优势木高生长模型精度检验发现,实测值与理论值无显著差异(p>0.05)。
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