海南岛北部玄武岩发育而成的土壤粘土矿物研究  

Comparison of clay minerals in soils derived from basalt materials in northern Hainan island

作　　者：黄成敏[1] 龚子同[2] 杨德涌[2] 

机构地区：[1]成都理工大学,四川成都610059 [2]中国科学院南京土壤研究所,江苏南京210008

出　　处：《西南农业学报》2001年第B12期1-4,共4页Southwest China Journal of Agricultural Sciences

基　　金：国家自然科学基金重点基金项目 (4 983 10 0 4);中国科学院特别支持项目 (90科计发 0 85 4)

摘　　要：对海南岛北部玄武岩上发育的成土年代系列土壤的研究表明 ,土壤中高岭石含量随风化成土年代的增加而逐渐增高 ,至富铁土时含量已达最高 ,之后含量下降。三水铝石含量逐渐增加。赤铁矿含量和结晶程度也随风化成土年代增加而增高。The chronosequence of soils, developed from basalt in northern Hainan island, southern China was studied. The results showed that, with the age of soil formation increasing, the content of clay in soils added, and the ratios of silt/clay and sand/clay decreased. Meanwhile, the content of kaolinite increased to its maximum at the phase of Ferrosols, and then descended. The content of gibbsite and hematite ascended gradually and the crystallity of hematite improved with the ageing of soil formation increasing.Besides, maghemite in soil clays tended to increasing.

关 键 词：海南岛北部 玄武岩 颗粒组成 粘土矿物 铁氧化物 

分 类 号：S151.1[农业科学—土壤学]