土壤和地下水化学类型和垂向主组分的动态——以河北曲周盐渍土区为例  

DYNAMICS OF CHEMICAL TYPES AND MAIN COMPONENTS IN VERTICAL PROFILE OF SOIL AND GROUNDWATER SALT-AFFECTED SOIL AREA IN QUZHOU, HEBEI

作　　者：李韵珠[1] 石元春[1] 

机构地区：[1]中国农业大学资源与环境学院,北京100094

出　　处：《土壤学报》2003年第4期481-489,共9页Acta Pedologica Sinica

摘　　要：以河北曲周县北部盐渍土区为基地 ,重点研究了土壤和地下水以阴离子组分为基础的化学类型的动态 ,以及主要化学组分的垂向变化和动态。根据土壤 -地下水典型点的研究 ,在 4年研究时段内 ,该区土壤化学类型的动态以季节变化类较多 ,相对稳定类其次。地下水的化学类型则以相对稳定类较多 ,转化类其次。相对于土壤而言 ,地下水的化学类型较为稳定。从土壤 -地下水主组分的垂向变化及其动态分析 ,它们反映了所处的河流微地貌部位、气候和人为措施等的影响 ,并遵循着地球化学组分的迁移规律。文中还提出了盐渍土化学类型的动态分类标准。The dynamics of chemical types and main components in vertical profile of soil and groundwater in salt affected soil area are focused in this paper. The results from the typical sites of soil groundwater during 4 years show that most of the dynamics classes for soil chemical types in this area are seasonal variation class, the next is relative steady class. For the chemical types of groundwater, most of the dynamics classes are relative steady class, the next is transform class and no seasonal variation class. The dynamics of chemical types for groundwater is steadier than that for soil and the chemical type of groundwater is not always coincident with that of soil at same site. The dynamics of the vertical variations for main component in the soil groundwater reflects the influences of landform, climate, man made measures and the migration law of geochemical components. The principles of the classification for the dynamics of chemical types of salt affected soil and groundwater, the simplified indexes for determining the main components and the unity of the indexes and nomenclature of chemical classification for the salt affected soils and groundwater with other disciplines are put forward in this paper.

关 键 词：土壤 地下水 化学类型 垂向主组分 动态分析 河北 曲周盐渍土区 

分 类 号：S156.41[农业科学—土壤学] P641.13[农业科学—农业基础科学]