›› 1986, Vol. 6 ›› Issue (1): 82-92.

• 开发宝岛 • 上一篇    下一篇

海南岛滨海地区若干元素的生物地球化学特征

曾水泉, 金维根   

  1. 中山大学地理系
  • 出版日期:1986-01-30 发布日期:1986-01-30

B10GEOCHEMICAL CHARACTERISTICS OF SOME ELEMENTS IN COASTAL REGION IN HAINAN ISLAND

ZENG Shuiquan, JIN Weigen   

  1. Department of Geography, Zhongshan University
  • Online:1986-01-30 Published:1986-01-30

摘要: 海南岛是我国热带宝岛,它位于北纬18°10'-21°10'和东经108°37'-110°03'之间,隔琼州海峡与大陆相望,全岛面积约3.4万平方公里.属高温多雨的热带季风气候区,水热同期,干湿季明显.年辐射量120-140大卡/平方厘米,年均温23-25℃,大部分地区年积温高于8500℃,年雨量在1500-2000毫米之间,比较干旱的西南部仍达1000毫米以上,主要是锋面雨、台风雨和热雷雨,因此,降雨集中于夏秋季节.

Abstract: Coastal region in Hainan Island is divided into two biogeochemical group:Group of Amphibian(Rhizophora apiculata)-salt marshes soil; And Group of Terrestria(Casuarina equiselifolia)-Coastal Sandy soil. The former group is a special ecosystem. It is mainly restricted by oceanic factors A great quantity of salt take part in biogeochemical cycle. Steeping in brine, failed branches and failed leaves on the surface of soil decompose difficultly, so that nutrient stockpile in the bodies of dead organism. It slows down the speed of biogeochemica cycle. The net growth quantities of Rhizophora apiculata increase slowly. Molybdenum, Cadmium, Cupper are reactive among trace elements which take part in the cycle.