| 西藏天然云杉林兼容性材积生长率模型系统研究 |
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| 引用本文： | 曾伟生.西藏天然云杉林兼容性材积生长率模型系统研究[J].北京林业大学学报,2008,30(5):87-90. |
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| 作者姓名： | 曾伟生 |
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| 作者单位： | 国家林业局中南林业调查规划设计院 |
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| 摘 要： | 实施限额采伐是我国森林资源管理的一项基本制度，而准确的森林生长量估测值，是确定森林采伐限额的重要依据。利用西藏自治区2006年森林资源连续清查的127个天然云杉林实测样地资料，通过代数和控制与比例控制方法，构建了两套非线性联合估计模型系统，建立了天然云杉林材积总生长率、进界生长率、保留生长率三者一致兼容的以林分龄组A和平均胸径D为解释变量的估测模型。对比分析表明，比例控制模型系统效果较好,其结果为:总生长率P0=32.780 A－0.927 72D－0.601 80，保留生长率P1=1/(1+517.27 A－0.696 39D－3.600 4)×32.780 A－0.927 72×D－0.601 80，进界生长率P2=1/(1+1/517.27 A0.696 39D3.600 4)×32.780 A－0.927 72D－0.601 80。研究结果为西藏天然云杉林的生长量估测提供了参考依据，研究方法为林分材积生长率模型及类似模型的研建提供了经验和借鉴。
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| 关 键 词： | 材积生长率 兼容性模型 非线性联合估计模型系统 建模 云杉 |
| 收稿时间： | 1900-01-01 |
Compatible model system of volume growth rates of natural spruce forest in Tibet |
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| ZENG Wei-sheng. Central South Forest Inventory , Planning Institute,State Forestry Administration,Changsha,P.R.China..Compatible model system of volume growth rates of natural spruce forest in Tibet[J].Journal of Beijing Forestry University,2008,30(5):87-90. |
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| Authors: | ZENG Wei-sheng Central South Forest Inventory Planning Institute State Forestry Administration Changsha PRChina |
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| Institution: | Central South Forest Inventory and Planning Institute, State Forestry Administration, Changsha, 410014, P. R. China. |
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| Abstract: | Cutting quota system is a basic system for forest resource management in China and the accurate estimation of forest growth is used as important reference to determine the cutting quota.Using the data of 127 sample plots of natural spruce(Picea asperata) forest in continuous forest inventory of Tibet in 2006,two non-linear dependently estimated model systems were established by algebra control and proportional control.Compatible models of total growth rate,ingrowth rate and surviror growth rate were constru... |
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| Keywords: | volume growth rate compatible model non-linear dependently estimated model system modeling Picea asperata |
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