海口地区土壤电阻率时空分布特征初步分析

Preliminary Analysis of Temporal and Spatial Distribution Characteristics of Soil Resistivity in Haikou Area

分析近5 a海口地区土壤电阻率和土壤湿度数据,结果表明:海口地区的土壤电阻率整体呈东低西高的分布特征;火山灰土的土壤电阻率随季节变化呈反U形曲线,红土、沙土的土壤电阻率随季节变化呈U形曲线,火山灰土的土壤电阻率并不因雨季来临而降低,反而上升;火山灰土的土壤电阻率随土壤湿度升高而上升,红土、沙土的土壤电阻率随土壤湿度升高而下降。

The past five years＇ data of soil resistivity and soil moisture in Haikou region was analyzed. The results show that soil resistivity is small in east of Haikou,and large in west. The soil resistivity of volcanic ash soil varies with the seasons in a form of inversely U- shaped curve. The waveshape of seasonal variation of clay and sand soil resistivity is of U- shaped curve. The volcanic ash soil resistivity did not decreased due to the rainy season,but increased. Volcanic ash soil resistivity increased with the increase of soil moisture. Red clay and sand soil resistivity declined according to the increase of soil moisture.