| 林木竞争指数空间格局的地统计学分析 |
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| 引用本文： | 周隽,国庆喜.林木竞争指数空间格局的地统计学分析[J].东北林业大学学报,2007,35(9):42-44. |
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| 作者姓名： | 周隽 国庆喜 |
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| 作者单位： | 东北林业大学,哈尔滨,150040 |
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| 基金项目： | 黑龙江博士后基金资助，东北林业大学优秀青年教师创新基金 |
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| 摘 要： | 运用地统计学原理和方法,分析了天然次生林中林木竞争指数分布的空间变异特征,计算了竞争指数的变异函数、分维数,并用Kriging方法对竞争指数进行了插值,结果表明:竞争指数的半方差函数可拟合为指数模型,在空间中呈聚集分布;竞争指数的空间异质性较大,且空间变异的大小与尺度大小密切相关。分维数的分析证明,林木个体属性在小尺度上的空间变异不可忽视。
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| 关 键 词： | 天然次生林 竞争指数 空间分布 地统计 |
| 修稿时间： | 2006-10-16 |
Geostatistical Analysis on Spatial Pattern of Competition Index |
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| Zhou Jun,Guo Qingxi.Geostatistical Analysis on Spatial Pattern of Competition Index[J].Journal of Northeast Forestry University,2007,35(9):42-44. |
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| Authors: | Zhou Jun Guo Qingxi |
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| Institution: | School of Forestry, Northeast Forestry University, Harbin 150040, P. R. China |
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| Abstract: | An experiment was conducted to study the spatial pattern of competition index in natural secondary forests by the principles and methods of geostatistics.Semivariogram,fractal dimension and Kriging map of competition index were calculated.Results indicate that the semivariogram of competition index fits an exponential model and exhibits an intense spatial aggregation.The competition index shows a higher spatial heterogeneity,and the degree of spatial variation is closely related to scale size.Fractal dimension analysis shows that the spatial variation in characteristics of individual tree in small-scale should be paid attention. |
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| Keywords: | Natural secondary forests Competition index Spatial distribution Geostatistics |
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