长白山锦北雨养泥炭剖面元素富集规律分析  

Distribution and Implications of the Elements of Peat Profiles in the Jinbei Bog of the Changbai Mountains

作　　者：贾琳[1] 王国平[1] 刘景双[1] 

机构地区：[1]中国科学院东北地理与农业生态研究所

出　　处：《湿地科学》2006年第3期187-192,共6页Wetland Science

基　　金：国家自然科学基金项目(40471136);省部共建实验室开放基金(DS2004-01)资助项目

摘　　要：为了揭示长白山锦北泥炭沼泽区泥炭沉积环境和重金属元素的历史变化及其对环境的指示意义,利用荷兰W ardenaar泥炭采样器采取泥炭样品并对样品进行高分辨率切割。用原子吸收分光光度计和等离子体发射光谱仪测定不同深度剖面Ca,Mg,Na,K,A l,Ti,Cu,Zn,Fe,Mn,Pb,Cr,N i和Co的浓度。研究分析了Ca,Mg,Na,K,A l,Ti,Mn,Zn,Cu,Pb,Cr,N i和Co在泥炭剖面的分布趋势并对其进行了相关分析和富集分析,得出Mn,Zn,Cu,Pb,Cr,N i和Co呈显著相关且在泥炭表层明显累积,揭示出泥炭表层重金属元素的大气沉降来源,表明近年来人类重金属消耗量及排放量的增加是大气沉降重金属元素的主要释放源,而且环境中重金属污染有加重的趋势。The study focused on the distribution of the elements of peat in the Jinbei bog of the Changbai Mountain. Samples were collected with Wardenaar peat sampler made in Netherlands. The peat bog is located in the Jinbei of Fusong county with altitude of over 900 m in Jilin province, Northeast China. The peat depth is about 1.1 m, and the area 4.925 km^2. The peat developed between 366 - 1 944 a. The winter here is long and cold while summer short and humid. The annual precipitation varies between 650 mm and 900 mm and the mean temperature is 2 ℃ to 5 ℃. The peat bog developed here content was mainly from rainwater. Sphagum is widely op is basalt mesa. Each peat profile was sectioned into was typically ombrotrphic, which indicated the inorganic developed and the mineral where the peat began to devel- 2 cm at the field. The contents of Ca, Mg, Na, K and Al, Ti, Cu, Zn, Fe, Mn, Pb, Ni, Cr, Co were determined by GBC -906AAS and ICP- AES respectively. The article aimed at revealing the depositional environment of the Jinbei peat bog, the changes of heavy metal elements with history and its implications for environment. The order average content in peat profile was Al 〉 Fe 〉 Na 〉 K 〉 Ca 〉 Mg 〉 Mn 〉 Zn 〉 Cr 〉 Pb 〉 Cu 〉 Co 〉 Ni. Furthermore compared with the average content of trace elements with peat bogs in the Daxinganling Mountains, the elements＇ contents were all more than those of peat bogs in the Daxinganling Mountains except Mn and Ni. The correlation analysis between the analyzed elements indicated the differences between them. Conservative elements such as Al and Ti were significantly correlated. Most of the heavy metals in peat were significantly correlated except Cu, for Cu can be easily transferred with water in acid condition. Through the enrichment analysis of the elements, the results showed that Mn, Zn, Pb, Cu, Ni, Cr and Co were significantly enriched in the top section of the peat profile. And Na and K distribution were strongly affected by their transference with water in pea

关 键 词：元素 泥炭 长白山锦北 

分 类 号：X144[环境科学与工程—环境科学] P931.7[天文地球—自然地理学]