贵州典型岩溶区土壤地球化学特征研究.doc

贵州典型岩溶区土壤地球化学特征研究
摘要:土壤是农作物生长的基础,本文以贵州花溪党武、遵义虾子和安龙木咱三个地区的土壤为主要研究对象,从地球化学的角度研究其土壤中相关矿物元素的含量、元素在岩—土剖面中的迁移富集特征及其风化成土系数,综合表征出研究区土壤的农业地质环境特征,并对其土壤环境质量做出初步评价,最终揭示出以化学溶解为主的贵州喀斯特碳酸盐岩分布区成土作用缓慢,岩石—土壤中元素含量差异性较大,土壤中矿物营养元分素相对贫瘠的基本特征。
关键词:喀斯特;土壤地质环境;营养元素;地球化学;贵州
The Research of the Property of soil geochemistry in Typical Karst Areas of Guizhou Province
CHEN Wu1,2,REN Mingqiang3,wang Ninnin1,2
(1. Institute of Resource and Environment, Guizhou University, Guiyang 550003, China; Laboratory of Karst Environment and Geohazard Prevention, Guizhou University,Ministry of Education,Guiyang 550003 China; 3. Guizhou Bureau of Geology and Mineral Exploration & Development, Geologic Environment Monitoring institute, Guiyang 550001 China)
Abstract:Soil is the base of crops growth. Gathering the soil samples from Huaxi dangwu, Zunyi xiazi and Anlong muza of Guizhou provice as the researching object, this paper mainly studies the mineral contents in the soil, mineral’s migration enrichment in the rock-soil profile and the coefficient of weathering and pedogensis by geochemistry to synthetically describing the characteristics of agro-geological environment and evaluating the soil environmental quality. Finally, it reveals that the weathering and pedogensis effect in the way of chemical dissolution of carbonate rock in Guizhou provice is slow, the difference of mineral contents between rock and s