摘要
基于区域变量化理论,运用传统统计学和地质统计学方法,以张掖市城市湿地为研究区,定量分析湿地土壤盐分、pH值和含水量的空间异质性。结果表明:土壤盐分较高,呈一定的碱化趋势;盐分属于强变异程度,pH值属于弱变异程度,含水量属于中等变异程度;根据半方差函数理论模型分析,盐分受结构性因素较大影响表现为强空间相关性,pH值受随机性因素影响很大不具备空间相关性,含水量受结构性因素和随机性因素的共同影响表现为中等空间相关性。克里格插值图显示,土壤盐分和含水量的空间分布均呈现出一定的环状、对称状、斑块状格局;pH值的空间分布呈现出面状形态。
Theory based on regional variables,the use of traditional statistics and geostatistics to Zhangye City wetland study area,quantitative analysis of wetland soil salinity,PH value and the spatial heterogeneity of water content.The results showed that： the higher the soil salinity,showing a certain degree of alkaline trend;salinity variation is strong,PH value of the variation is weak,moderate degree of variation in moisture content;theoretical model based on semi-variogram analysis of the larger salt affected by structural factors affect the performance for strong spatial correlation,PH value is influenced by random factors do not have the spatial correlation of water affected by structural factors and the combined effect of random factors exhibited moderate spatial correlation.Kriging interpolation map shows soil salinity and water content are shown the spatial distribution of a certain ring,symmetrical,patchy pattern;PH value of the spatial distribution of presents to come forward like morphology.
出处
《地下水》
2011年第1期8-11,共4页
Ground water
基金
甘肃省地矿局水工环科学基金资助(SGH-2009)
关键词
土壤盐分
pH
含水量
地质统计学
空间异质性
克里格插值
张掖市城市湿地
Soil salinity
PH
Water-contained quantity
geology statistics
Spatial heterogeneity
Kirging interpolation map
wetland in Zhangye city
