| 天山云杉林分树高测定的灰色动态模型 |
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| 引用本文： | 丁良忱,张思玉.天山云杉林分树高测定的灰色动态模型[J].新疆农业大学学报,1989,12(2):25-29. |
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| 作者姓名： | 丁良忱 张思玉 |
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| 作者单位： | 八一农学院林学系，八一农学院林学系 |
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| 摘 要： | 本文据根天山云杉林分树干解析资料,应用灰色系统理论建模方法,依树高和胸径的定期生长量随时间的增长而变化的数据序列,建立了测定树高的GM(1,2)灰色动态模型,求得模型计算值,进而以模型计算值作为蓄积量测定的要素之一,参予了林分蓄积量计算,并与实测值分别进行了对照检验,结果表明:所建模型拟合效果较好,其树高和蓄积量计算值,具有较高的精度。
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| 关 键 词： | 天山云杉林分 树干解析 定期生长 GM(1 2)模型 |
A Grey Systematic Dynamic Model of Tree Height Measurement of Schren Spruce |
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| Ding Liangcheh Zhang Siyu.A Grey Systematic Dynamic Model of Tree Height Measurement of Schren Spruce[J].Journal of Xinjiang Agricultural University,1989,12(2):25-29. |
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| Authors: | Ding Liangcheh Zhang Siyu |
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| Institution: | Department of Forestry |
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| Abstract: | In this paper, using the data of stem analysis of schren spruce and according to the time series of periodic diameter and height increment, GM (1, 2) grey systematic dynamic model of height growth was fitted. The method of making model in grey system theory was applied. Afterwords, as an important factor, the theoretical value of tree height was used to calculate stand volume and was tested with the practical value The result shows that the high precision of theoretical value of height and volume was obtained. |
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| Keywords: | schren spruce stand stem analysis periodic increment GM (1 2) grey systematic model |
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