冀东滨海区土壤盐碱状况分析

为了掌握冀东滨海区土壤盐碱地状况，确定滨海县区土壤盐碱分布特征，以冀东滨海县区为研究区域，通过定位取样测试、ARC/INF软件数据分析等方法，对土壤盐分、pH指标进行综合分析。结果表明：土壤水溶性盐均值达到0.20%的县区有唐海县、汉沽，秦皇岛沿海区县均值低于0.10%，1~2级（盐分>0.4%）农用地面积约4×104 hm2，主要分布在唐山沿海县区。pH值以芦台、汉沽、唐海最高，达到8.0，以秦皇岛沿海区县最低，平均值小于7.0。综合可知，盐渍化土壤成沿海带状纵深分布，且以唐山沿海盐碱程度最高。

Analysis of Salinity and pH of Topsoil in the Coastal Areas of East Hebei

In order to determine soil saline distribution characteristics of eastern coastal counties in Hebei,salinity and pH of topsoil were analyzed by the methods of locate sampling and ARC soft processing in the coastal areas of east Hebei.The results showed that：the salinity of topsoil was more than 0.20% in Tanghai and Hangu,and less than 0.10% in the coastal of Qinhuangdao.1-2 levels（salinity0.4%） agricultural land areas of about 4×10 4 hm 2,mainly distributed in coastal counties of Tangshan.pH of topsoil was more than 8.0 in Lutai,Hangu,Tanghai,the average of pH was less than 7.0 in the coastal region of Qinhuangdao.Saline soil of the district was depth distribution along coastal strip,and the most distributed in the coastal of Tangshan.