| 有效叶面积指数与真实叶面积指数的模型转换 |
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| 引用本文： | 杜春雨,范文义. 有效叶面积指数与真实叶面积指数的模型转换[J]. 东北林业大学学报, 2010, 38(7) |
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| 作者姓名： | 杜春雨 范文义 |
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| 作者单位： | 东北林业大学,哈尔滨,150040;东北林业大学,哈尔滨,150040 |
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| 基金项目： | 国家高技术研究发展("863")计划 |
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| 摘 要： | 介绍了叶面积指数主要的测量方法(直接法和间接法),并分析了各种方法的优缺点。同时针对LAI-2000测量的有效叶面积指数较真实值偏小的问题,以小兴安岭林地为研究区,利用外业调查得到的有效叶面积指数,以及根据生物量之间的关系计算得到真实叶面积指数,建立了有效值和真实值二者的线性回归模型,并进行了精度验证,结果表明,该方法可行,精度较高。
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| 关 键 词： | 叶面积指数 测量方法 模型 |
Model Transformation between the Effective Leaf Area Index and the Actual Leaf Area Index |
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| Du Chunyu,Fan Wenyi. Model Transformation between the Effective Leaf Area Index and the Actual Leaf Area Index[J]. Journal of Northeast Forestry University, 2010, 38(7) |
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| Authors: | Du Chunyu Fan Wenyi |
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| Affiliation: | Du Chunyu,Fan Wenyi(School of Forestry,Northeast Forestry University,Harbin 150040,P. R. China) |
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| Abstract: | The main measurement methods of leaf area index (LAI),including direct method and indirect method,were introduced,and the advantages and disadvantages of the various methods were also analysed. In allusion to the fact that the LAI-2000 measured value of the effective LAI is lower than the actual value,a linear regression model was established to express the relationship between the effective value and the actual value by the actual LAI calculated from the effective LAI obtained through field surveys. Result... |
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| Keywords: | Leaf area index Measurement methods Models |
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