基于EC-Probe仪器的土壤盐分原位测定及其在河北坝上地区的应用研究  

Using the EC-Probe Instrument for In-situ Soil Salinity Measurement and Its Application in Bashang Region of Hebei Province

作　　者：吴迪[1] 张卓栋[1] 陈思宇[1] 孙传龙[1] 赵梦頔 赵常军[1] 

机构地区：[1]北京师范大学地理学与遥感科学学院,北京100875

出　　处：《中国农学通报》2015年第16期201-206,共6页Chinese Agricultural Science Bulletin

基　　金：国家基础科学人才培养基金项目"北京师范大学地理学基地项目"(J1103403);国家自然科学基金项目"融合地表参数与风场模拟的草地景观系统风蚀定量评价:以锡林郭勒草原为例"(41301282);中央高校基本科研业务费专项资金"坝上农牧交错带植物根系空间分异规律与形成机理研究"(2013NT04)

摘　　要：目前中国测定土壤含盐量主要使用土壤浸提液法,而这种传统的方法操作繁琐,原位测定法相对更为便捷,但应用较少。使用EC-Probe仪器原位测定河北坝上部分地区土壤电导率,部分土样采用实验室土壤浸提液电导率法建立土壤盐分与土壤电导率之间的转换模型,通过该模型对坝上地区不同土地利用类型同一深度的土壤盐度进行测量,并分析了不同深度土壤盐度分布的主要规律。结果发现沼泽、耕地、森林、河漫滩和草地的土壤含盐量依次下降,研究发现该研究区域目前各种土地利用类型的土壤盐度均未达到盐碱化标准,但沼泽地和耕地的盐碱化风险较高,需加强生态保护。At present,soil salinity is usually measured by soil extracts method,this traditional method iscomplicated while in-situ measurement is more convenient.However,the in-situ method has not been widelyapplied yet.In this study,in-situ soil salinity measurement was carried out using the EC-Probe instrument inBashang region of Hebei Province.The conversion model between soil salinity and conductivity wasestablished by both in-situ and laboratory measurements.Based on this conversion model,the soil salinity ofdifferent land use types at the same depth was determined,and the author analyzed soil salinity distributionrules in different depths.The results showed that the soil salinity order was： marshland farmland forestfloodplain grassland.Soil salinity in all soil types did not reach the soil salinization threshold,however,therisk of salinization in marshland and farmland was obviously higher,which required the strengthening ofecological protection.

关 键 词：土壤盐分 河北坝上 原位测定 EC-Probe仪器 

分 类 号：S151.9[农业科学—土壤学]