戴前石, 刘金山. 青藏高原贡觉县森林规划设计因子的地统计学分析[J]. 西南林业大学学报, 2017, 37(3): 146-151. DOI: 10.11929/j.issn.2095-1914.2017.03.023
引用本文: 戴前石, 刘金山. 青藏高原贡觉县森林规划设计因子的地统计学分析[J]. 西南林业大学学报, 2017, 37(3): 146-151. DOI: 10.11929/j.issn.2095-1914.2017.03.023
Qianshi Dai, Jinshan Liu. Geo-statistical Analysis of the Forest Planning and Design Factors in Gongjue County of Qinghai-Tibetan Plateau[J]. Journal of Southwest Forestry University, 2017, 37(3): 146-151. DOI: 10.11929/j.issn.2095-1914.2017.03.023
Citation: Qianshi Dai, Jinshan Liu. Geo-statistical Analysis of the Forest Planning and Design Factors in Gongjue County of Qinghai-Tibetan Plateau[J]. Journal of Southwest Forestry University, 2017, 37(3): 146-151. DOI: 10.11929/j.issn.2095-1914.2017.03.023

青藏高原贡觉县森林规划设计因子的地统计学分析

Geo-statistical Analysis of the Forest Planning and Design Factors in Gongjue County of Qinghai-Tibetan Plateau

  • 摘要: 以西藏重点林区县贡觉县为研究对象,采用2012年森林规划设计调查数据为主要信息源,利用GIS空间分析工具,对10个主要森林规划设计因子进行了空间自相关分析、半方差分析、克里金插值分析。结果表明:贡觉县的10个森林规划设计因子均具有较为显著的空间自相关性,在空间分布上呈现出聚集的分布格局;半方差分析表明,森林生态功能等级的自相关尺度最大,单位面积蓄积最小;10个森林规划设计因子最优半方差模型多为线性、指数模型的原因,与研究区地势特点、森林水平与垂直分布规律存在着密切的关系;由于受多样的气候因素和地形地貌的影响,贡觉县东部地区林木的平均胸径和蓄积量最大。

     

    Abstract: The Gongjue County of Tibet was taken as the research area, while the forest planning and design survey data in 2012 were collected as the main data source. Spatial auto-correlation analysis, semi-variance analysis and Kriging analysis of 10 major forest planning and design factors were conducted by using the powerful spatial analysis tools of GIS. The results showed that there existed an obvious spatial auto-correlation for the 10 factors, which present a spatial distribution pattern of aggregation; Semi-variance analysis showed that the spatial autocorrelation range of forest ecological function was the largest, while the unit stock volume was the smallest; The fact that the optimal semi-variance models of 10 investigated factors were mostly linear and exponential models was closely related with the terrain characteristics of the study area and the horizontal-vertical distribution of forest; Mainly influenced by various climatic factors and topography, the average diameter of breast height and volume of trees got the largest in eastern part of Gongjue County.

     

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