[1]黄家荣,郭芳,高光芹,等.毛白杨农田防护林带直径分布预测[J].西北林学院学报,2010,25(05):140-145.
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毛白杨农田防护林带直径分布预测()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第25卷
期数:
2010年05期
页码:
140-145
栏目:
森林经理与经营
出版日期:
2010-09-30

文章信息/Info

作者:
黄家荣;郭芳;高光芹;王留喜;
河南农业大学林学院;
关键词:
人工神经网络农田防护林直径分布预测毛白杨
摘要:
以河南省博爱县毛白杨农田防护林带为研究对象,在调查、计算林带径阶分布数据和有关林分特征数的基础上,应用人工神经网络建模技术,以断面积平均直径、直径变动系数和径阶相对直径等为输入变量,以径阶株数累积频率为输出变量,建立了结构为3∶11∶1的毛白杨农田防护林带直径分布神经网络预测模型,模型总体拟合准确度为98.18%。模型的拟合准确度分析结果表明,累积频率拟合准确度最大99.93%,最小88.48%,平均98.20%。模型的预测准确度分析结果显示,累积频率预测准确度最大99.70%,最小94.36%,平均97.56%。模型的平均准确度在95%以上,能满足林业上的应用要求,模型研究取得了较好的拟合、预测效果。

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备注/Memo

备注/Memo:
河南省科技攻关项目(0624050007);;
更新日期/Last Update: 2010-09-20