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利用实测和室内试验获得的数据,采用经典统计学和地质统计学方法,结合GIS技术,分析了新疆克里雅绿洲地下水埋深时空变化对土壤盐分分布的影响。研究结果表明:克里雅绿洲春、夏、秋3个季节地下水埋深和土壤EC值预测精度误差均为10%左右;夏天地下水埋深最大,为13.1m,春天最小,一年内埋深波动可达6m;地下水埋深大致形成了南深北浅的空间分布特征;春季土壤EC值连续性相对差,夏季0~10cm土壤EC值相对高而且连续性最好,土壤盐分最高值出现在绿洲中北部:土壤盐分受地下水埋深影响显著,地下水埋深从东南部到北部呈减小趋势,土壤盐分随地下水埋深的减小而增加。因此,应采取适合克里雅绿洲水资源状况的管理措施,控制地下水埋深,防止土壤盐渍化的进一步加剧。
Based on the data obtained from field experiments and laboratory tests, the effects of spatio-temporal variations of groundwater depth on the distribution of soil salinity were analyzed using classical statistics and geostatistics combined with GIS. The results show that the prediction error of groundwater depth and soil EC value in spring, summer and autumn are all about 10% in Keleya Oasis. The summer groundwater depth is 13.1m, the spring is the smallest, Which can reach 6m. The depth of groundwater generally forms the spatial distribution of south, north and north. The continuity of soil EC value in spring is relatively poor. The soil EC value in 0 ~ 10cm soil is relatively high and the continuity is the best in summer. The highest soil salinity appears in oasis North Central China: Soil salinity is significantly affected by groundwater depth, groundwater depth decreases from southeast to north, and soil salinity increases with decreasing groundwater depth. Therefore, we should adopt management measures suitable for the water condition of the Kailua Oasis to control the groundwater depth and prevent the further increase of soil salinization.