海南岛土壤中铝钙的地球化学特征及其对生态环境的影响  

Geochemical Characteristics of Aluminum and Calcium of Soils and Their Impact on Ecological Environment in Hainan Island

作　　者：龚子同[1] 张甘霖[1] 赵文君[1] 陈志诚[1] 欧阳洮[1] 赵玉国[1] 

机构地区：[1]中国科学院南京土壤研究所,江苏南京210008

出　　处：《地理科学》2003年第2期200-207,共8页Scientia Geographica Sinica

基　　金：国家自然科学基金项目 ( 498310 0 4);国家科委重点科技攻关项目 ( 96-92 0 -0 2 -0 2 )

摘　　要：对海南岛土壤中铝、钙的含量、形态及其在成土过程中的地球化学特征进行讨论 。In the paper the contents and forms of aluminum and calcium of soils, as well as their geochemical characteristics in soil-forming processes, in Hainan Island are discussed. Meanwhile, the impacts of both elements on crop growth and human health are also primarily researched. The soils in Hainan Island have the pedogeochemical characteristics that the soils are highly abundant in aluminum and highly deficient in calcium. The total amount of aluminum (Al 2O 3) may be as high as 300g/kg, but that of calcium is very low or even trace. In the same way, the content of exchangeable aluminum of the soils is high and that of exchangeable calcium is very low. Now, there are about 50 percent area of the soils where plant growth may be impact due to soil aluminum toxicity. The intake of calcium for local people, reflecting on the food, is less than that for the people of whole country as well as the neighboring province. Consequently, the suggestion is recommended that, besides improving soils, cultivating more legume crops, increasing soybean production and developing dairy farm are necessary to build up the people′s health.

关 键 词：海南岛 土壤 铝 钙 地球化学特征 生态环境 成土过程 作物 人类健康 

分 类 号：S153[农业科学—土壤学]