会理县植烟区土壤氯素空间变异特征及其影响因子

Spatial Variability Characteristic and Influencing Factors of Chlorine in Tobacco Growing Soil in Huili County

为明确会理县植烟土壤氯素状况，利用GIS与地统计学技术，分析了四川省凉山州会理县植烟区土壤氯含量空间变异特征及其影响因子。结果表明，该区域土壤氯含量多数小于30mg／kg，其空间相关性较强，且主要受结构性因子影响；南阁乡土壤氯含量多数处于10～30mg／kg，而氯含量〈10mg／kg的土壤集中分布于内东乡。土壤粉粒与氯含量表现出显著正相关关系，而土壤类型和地形条件对土壤氯含量的影响不明显。

For investigating the chlorine content in tobacco growing soil, the spatial characteristics and influencing factors of chlorine content in tobacco growing soil in Huili County of Liangshan Prefecture in Sichuan Province were analyzed by geosatistics combining with GIS. The results showed that the chlorine content in most of soil samples was less than 30 mg/kg, it was strongly spatially dependent and mainly influenced by structural factors. The soil chlorine content in Nange Village ranged from 10 to 30 mg/kg, while the soil with chlorine content less than 10 mg/kg mainly distributed in Neidong Village. The silt particles in soil significantly positively correlated with soil chlorine content, however, the influences of soil type and terrain conditions on soil chlorine content was not obvious.