| 小尺度下土壤水分空间变异与地形因子的相关分析 |
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| 引用本文： | 罗太近.小尺度下土壤水分空间变异与地形因子的相关分析[J].北京测绘,2013(6):11-15. |
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| 作者姓名： | 罗太近 |
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| 作者单位： | 贵州地质工程勘察院,贵州贵阳,550008 |
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| 摘 要： | 根据贵阳市采样基地地形地貌及土地利用特征,借助地统计空间变异分析和GIS技术在进行详细的土壤水分变异特征分析的基础上,分析小尺度下土壤水分分布与地形因子的关系.从对土壤水分的统计分析结果来看,土壤水分分布接近正态分布;变异系数为0.17,属于中等偏低水平;土壤水含量范围大约在10.65～21.82之间.克立格插值结果显示,整个研究区域中的土壤水含量分布规律明显,即由中间向东西两侧递增.通过对不同坡度和高程下土壤水含量分级的分布面积的整理,我们发现不同级别的土壤水含量与坡度之间存在很强的负相关关系,变化曲线呈倒数形式;土壤水含量的各个级别与高程4级、5级之间存在很强的正相关关系;土壤水含量各个级别在东坡分布面积最多,其次为东北坡.
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| 关 键 词： | 土壤水 空间变异性 地形因子 相关分析 |
Study on the Soil Water Spatial Variability and Layout Optimization of Soil Sampling under the Small Scale |
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| LUO Tai-jin.Study on the Soil Water Spatial Variability and Layout Optimization of Soil Sampling under the Small Scale[J].Beijing Surveying and Mapping,2013(6):11-15. |
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| Authors: | LUO Tai-jin |
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| Institution: | LUO Tai-jin (Guizhou Institute of Geology Engineering Investigation, Guizhou Guiyang 550008, China) |
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| Abstract: | This article according to landform and land use characteristics of Guiyang experiment base, with spatial variabil- ity analysis with statistical and GIS technology,on the basis of detailed Variability analysis of soil moisture, Exploring the distribution of soil moisture on small scales and relationship between terrain factors. From the statistical analysis on soil moisture data,soil moisture data fits the normal distribution;The coefficient of variation is 0. 17 ,which belongs to the mid- dle level Df variation; Soil water content ranges between about 10.65-21.82. The result of kriging interpolation display that soil water content in the entire area of distribution has an obvious rule, which show a trends of being from both sides to middle. Based on the statistical analysis of distribution area under soil water content grading at different elevations and slope, find that the content of soil water and slope at every level have a strong negative relation,the curve is in countdown form; there is a strong positive relationship between each level of the soil water content and elevation level 4 and level 5; East slope is the most distribution area in every soil water levels,and followed by the Northeast slope. |
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| Keywords: | soil moisture spatial variability terrain factor correlation analysis |
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