| 山东省临沂地区杨树人工林林分密度管理图的编制 |
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| 引用本文： | 刘景芳,童书振,郑世楷,李富恩,魏效德,卢永农.山东省临沂地区杨树人工林林分密度管理图的编制[J].林业科学研究,1989(5):469-476. |
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| 作者姓名： | 刘景芳 童书振 郑世楷 李富恩 魏效德 卢永农 |
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| 作者单位： | 中国林业科学研究院林业研究所
(刘景芳,童书振,郑世楷),山东省莒县林业局
(李富恩),山东省临沂市林业局
(魏效德),山东省沂南县林业局(卢永农) |
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| 摘 要： | 山东省临沂地区杨树人工林林分密度管理图,于1986年冬至1987年春在该地区设置69杨等临时标地356块资料基础上编制而成。密度为278—5952株/ha(其中500—1894株/ha者占89.1％);优势高为5.9—28.6m;平均胸径为3.8—28.6cm;蓄积量为3.9—339.7m~3/ha。管理图编制方法:等树高线选用M~(-1)=A_1+B_1N~(-1)式,等直径线选用D~(-1)=A_2+B_2N式;最大密度线采用M_(Rf)=K_2·N_(Rf)~(K_1~′)式;密度管理线采用M_(Ry)=K_3·N_(Ry)~(K_1~′)式。本密度管理图的精度,等树高线为97.6％;等直径线为98.9％,符合生产要求。
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| 关 键 词： | 杨树人工林 密度管理图 |
| 收稿时间： | 1/1/1989 12:00:00 AM |
ESTABLISHMENT OF STAND DENSITY CONTROL DIAGRAM FOR POPLAR IN LINGYI PREFECTURE, SHANDONG PROVINCE |
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| Liu Jingfang,Tung Shuzhen,Zheng Shikai,Li Fuen,Wei Xiaode and Lu Yongnun.ESTABLISHMENT OF STAND DENSITY CONTROL DIAGRAM FOR POPLAR IN LINGYI PREFECTURE, SHANDONG PROVINCE[J].Forest Research,1989(5):469-476. |
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| Authors: | Liu Jingfang Tung Shuzhen Zheng Shikai Li Fuen Wei Xiaode and Lu Yongnun |
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| Institution: | Liu Jingfang Tung Shuzhen Zheng Shikai(The Research Institute of Forestry CAF)Li Fuen Wei Xiaode(Forest Bureau of Ju County) (Forest Bureau of Lingyi City)Lu Yongnun(Forest Bureau of Yinan County) |
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| Abstract: | Data of 356 temporary sample plots of intensively cultivated poplar plantations (Populus deltoides cv. "Lux" I-69/55) were collected for establishment of stand density control diagram. The densities of poplar plantation ranged from 278 to 5952 plants per ha.. Among all 317 sample plots, the densities are ranging from 500 to 1894 plants per ha., accounting for 89.1%. The dominant height varied from 5.9 to 28.6m, the average D. B. H. 3.8-28.6cm, the volume per ha. 3.9-339.7 m. The formularsused are as follows: for equivalant height curve,for equivalent diameter curve, for full density curve, for density control curve. The accuracy of the stand density control diagram is 97.6 for equivalent height curve, 98. 9% for equivalent diameter curve. |
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| Keywords: | poplar plantation stand density control diagram |
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