海南岛地表水的区域地球化学特征及其影响因素  

Regional Geochemical Characteristics and Affecting Factors of Surface Water on the Hainan Island

作　　者：何玉生[1] 傅杨荣[1] 王丰[1] 张固成[1] 

机构地区：[1]海南省地质调查院,海南海口570206

出　　处：《地球与环境》2009年第2期157-162,共6页Earth and Environment

基　　金：中国地质调查局国土资源地质大调查项目-海南岛生态地球化学调查资助(200414200010)

摘　　要：始于2004年的海南岛多目标生态地球化学调查,对全岛的地表水进行了区域调查取样,分析测试了24项指标(部分样品增加测试12项)。测试结果表明,大多数指标优于国家地表水环境质量标准(GB3838-2002)中III类水体水质标准,只有Hg和总氮存在区域性的超Ⅲ类水体水质。经对样品的聚类分析研究表明,全岛地表水样品主要分为4类,分别反映了地表植被、海水入侵、灌溉水田排水、矿山废水排放对地表水化学成分的控制作用。在此认识的基础上,依地表水样品所处的土地利用方式的不同,按一定顺序对样品进行编号赋值(沿海的土地视为"海洋利用方式"),该赋值与聚类分析所得到的样品类别值之间存在极显著的正相关性,相关系数达0.8280,表明海南岛的土地利用方式是控制地表水地球化学特征的关键因素,从而为海南岛地表水环境质量的保护和提高指出了方向。During the multi-purpose eco-geochemical survey on the Hainan Island, which started in：2004, surface water samples were collected all over the island and analyzed for 24 items. It is shown that most items are lower than the third style finite values of the Environmental Quality Standard for Surface Water （GB3838--2002） except Hg. and total nitrogen. These samples were also divided into four groups which indicate the chemical effects on surface water , including the Earth surface＇s vegetation, seawater-trangression,tirrigating paddy field-drainage and mine waste water-discharge. Based on this knowledge, the samples were evaluated according to their land-use styles and executed between the values and cluster groups. The correlation coefficient, 0. 8280, shows that the style of land-use is the key factor controlling the geochemical characteristics of surface water. It is no doubt that hove to protect and improve the environmental quality of Hainan Island surface water must be based on the style of land-use.

关 键 词：区域地球化学特征 影响因素 地表水 海南岛 

分 类 号：P641.3[天文地球—地质矿产勘探]