单 位：
吉林省煤田地质勘察设计研究院;吉林大学环境与资源学院
关键词：
孔雀河流域;地统计学;土壤盐分;空间变异
摘 要：
为查明孔雀河流域的土壤盐分空间分布及变异特征,进而为地区盐渍化土壤改良与利用提供科学依据。在该区25个点逐层采集土壤剖面样品,测试土壤盐分含量,利用地统计学基本原理与手段,获得区内土壤盐渍化的空间变异信息参数,绘制了区域土壤盐分含量空间分布图。研究表明:0~20 cm和20~60 cm属中度盐渍土,60~100 cm属轻度盐渍土;各土层盐分含量处于强变异性范围;块基值<25%,具有强空间相关性,结构性因素对其空间变异的贡献较大;土壤盐分含量存在明显的空间分布规律,水平方向上由上游至下游含盐量先增后减,随距河流距离增加含盐量缓慢增大,垂直方向随深度增加含盐量逐渐减小。
译 名：
Soil Salinity Spatial Distribution and Variation Characteristics in Irrigated Land of Kongque River Basin
作 者：
ZHANG Xue;CHEN Yaoxuan;ZHANG Pan;YANG Fengtian;Institute of Water Resources and Environment, College of Environment and Resources, Jilin University;The Coal Field Perambulation Design Research Institute of Jilin Province;
关键词：
Kongque River basin;;Geostatistics;;Soil salinity;;Spatial variation
摘 要：
This study was conducted to find out soil salinity spatial distribution and variation characteristics of Kongque River basin, and in turn to provide scientific basis for the amelioration and utilization of saline soil. Soil samples in each layer from 25 profiles were collected to determine the salinity of the soil. The spatial variation characteristics of soil salinity were investigated with the methods of geostatictics, and then the map of soil salinity spatial distribution was made. The results showed that the soils from 0–20 cm and 20–60 cm layers are in a moderate salinization and these from 60–100 cm layer are in a mild salinization. The soil salinity of each layer exhibited great spatial variation. The nugget-to-sill ratios are smaller than 25%, so the spatial correlations are strong. The spatial variation of soil salinity was mainly determined by structural factors. The soil salinity showed obvious spatial distribution regularity. In the horizontal direction, soil salinity increased firstly and than decreased from the upper river to the lower reaches. The salinization also increased with the increasing distance from the river. In the vertical direction, soil salinity decreased with the increasing depth of the soil profiles.
