| 陇南降水特性的空间变异性研究 |
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| 引用本文： | 王润科,叶青,杨磊.陇南降水特性的空间变异性研究[J].天水师范学院学报,2013,33(2):68-72. |
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| 作者姓名： | 王润科 叶青 杨磊 |
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| 作者单位： | 陇南师范高等专科学校地理系,甘肃成县,742500 |
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| 基金项目： | 陇南师范高等专科学校校级科研项目“基于RS和GIS的陇南嘉陵江流域资源环境空间要素分析研究”（2012LSZK02002）阶段性成果 |
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| 摘 要： | 陇南地处秦巴山区,位于长江上游.降水量在纵向分布上,由于受山脉的走向、山势的高度、山坡坡度和坡向等地形因素的影响,分布不均匀,具有明显的垂直分布特点,地域差异明显,具有很大的空间变化特征,本文对陇南嘉临江流域各站点年平均降水量进行了空间变异性研究,介绍和探讨了其研究方法和步骤,根据变异理论建立了变异函数模型,揭示了降水量的空间结构关系的方向性和与距离有关的自相关性,最后利用普通克里格插值进行研究区域内年平均降水量的插值预测.
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| 关 键 词： | GIS 降水 方差 空间变异性 |
Investigation of the Spatial Variability of the Precipitation Haracteristics in Longnan |
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| Wang Runke
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Ye Qing
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Yang Lei.Investigation of the Spatial Variability of the Precipitation Haracteristics in Longnan[J].Journal of Tianshui Normal University,2013,33(2):68-72. |
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| Authors: | Wang Runke Ye Qing Yang Lei |
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| Institution: | (Department of Geography, Longnan Teachers College, Chengxian Gansu 742500, China) |
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| Abstract: | Longnan, is situated in the Qinling Mountains and in the upper reaches of Yangtze River. Under the inllu- ence of some topographical factors including ridge tendency, yamase height, hillside grade and exposure, the precipi- tation in longitudinal distribution with obvious vertical distribution characteristic, is uneven and it is of the great spa- tial variability, varying in different regions. This paper studies the spatial variability of the average annual precipita- tion of each site along the Jialing River in Longnan. It then introduces.and discusses the research methods and proce- dures. It establishes the variation function model based on variation theory, revealing the directionality of the spatial structure relations of precipitation and autocorrelation related with distance. Finally, prediction is made on the inter- polation of average annual precipitation in research areas with the use of ordinary kriging interpolation. |
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| Keywords: | GIS Precipitation Variance spatial variability |
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