| 陕西省油松人工林的生产力与生态因素的相关分析 |
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| 引用本文： | 肖瑜.陕西省油松人工林的生产力与生态因素的相关分析[J].Acta Botanica Sinica,1987(5). |
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| 作者姓名： | 肖瑜 |
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| 作者单位： | 西北林学院 陕西杨陵镇 |
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| 摘 要： | 本文研究了油松林分生产力和生态因素的关系,分析了地理、地形,气候、林分和土壤因素单独及综合对林分生产的影响,得到84个逐步回归方程和全回归方程,选出了6个最优方程。计算了各林分外部因素的标准回归系数,找出了影响林分不同部分生产量的因素重要性序列,还探讨了生产力与生态因素相关关系的研究在实践中的应用。
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| 关 键 词： | 油松 生产力 生态因素 多元回归分析 |
CORRELATION ANALYSIS BETWEEN PRODUCTIVITY OF CHINESE PINE (PINUS TABULAE,FORMIS CARR.) PLANTATIONS AND ECOLOGICAL FACTORS IN SHAANXI PROVINCE |
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| Authors: | Xiao Yu |
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| Abstract: | This paper centers on the relationships between productivity of Chinese pine stands and ecological factors.The effects of geographictopographic factors,climatic factors,stand factors, soil factors,and combination of these factors are analysed.The whole 84 step-by-step and mul- tiple regression equations are obtained.There are 6 best equations selected for future use.The standard regression coefficients of environmental factors in each equation are calculated.Ac- cording to their effects on the production of tree components the important sequence is put in order.At last,the practical utilization of study on the relationships between productivity and ecological factors is explored. |
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| Keywords: | Pinus tabulaeformis Productivity Ecological factors Multiple regression analysis |
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