水土保持学报2018，Vol.32Issue(1)：303-311,319,10.DOI:10.13870/j.cnki.stbcxb.2018.01.048
岩溶地区主量元素地球化学特征及其迁移规律——以贵州双河洞为例
The Geochemical Characteristics and Migration of Major Elements in Karst Area——Taking Shuanghe Cave in Guizhou as An Example
摘要
Abstract
Through the determination of soil physical and chemical properties and the major elements in soil water and rocks,the principal component multiple regression model was built to investigate the main influencing factors of major elements migration,and their contribution rates were calculated.The results showed that the Mg and Ca content at each soil monitoring points ranged 1 393.98～5 497.42 mg/kg,880.47～3 133.43 mg/kg respectively,which were higher than K and Na,i.e.,498.58～3 315.42,32.98～186.75 mg/kg,respectively.Soil CO2 concentration and soil temperature had the significant seasonal characteristics,which gave the higher values in summer and autumn than in winter and spring.Soil porosity decreased with the increasing depth,and the contents of HCO3 and Ca2+ in soil water were higher than other ions.The migration ability of main elements was Na ＞ Ca ＞ Mg ＞ K,and the migration coefficients in summer of all elements were the highest.The factors with high contribution rate to major elements migration included precipitation,soil CO2 concentration,soil temperature and the content of anion in soil water,and their cumulative contribution rate reached up to 52.84 ％ ～79.06 ％.The cumulative contribution rate of soil bulk density and the major elements content in soil and soil water was 22.98％,significantly lower than the aforementioned factors.The contribution rate of total soil porosity and aeration porosity were even lower,just 2.19％ ～8.76％.关键词
岩溶/主量元素/元素迁移/主成分回归分析/贡献率Key words
karst/major elements/element migration/principal component regression analysis/contribution rate分类
农业科技引用本文复制引用
殷超,周忠发,田衷珲,张绍云,汪炎林..岩溶地区主量元素地球化学特征及其迁移规律——以贵州双河洞为例[J].水土保持学报,2018,32(1):303-311,319,10.基金项目
国家自然科学基金地区项目(41661088,41361081) （41661088,41361081）
贵州省高层次创新型人才培养计划“百”层次人才项目(黔科合平台人才[2016]5674)) （黔科合平台人才[2016]5674）
