鄱阳湖小白鹭卵壳重金属分布特征研究  

Research on Distribution Characteristics of Heavy Metals in Eggshell of Little Egret(Egretta garzetta)in Poyang Lake

作　　者：李惠鑫 龚明昊[1,2] 刘刚[1,2] 文菀玉[1,2] 王宇航[1,2] LI Hui-xin;GONG Ming-hao;LIU Gang;WEN Wan-yu;WANG Yu-hang(Institute of Ecological Protection and Restoration,Chinese Academy of Forestry,Beijing 100091,China;Institute of Wetland Research,Chinese Academy of Forestry,Beijing 100091,China)

机构地区：[1]中国林业科学研究院生态保护与修复研究所,北京100091 [2]中国林业科学研究院湿地研究所,北京100091

出　　处：《温带林业研究》2022年第4期6-10,共5页Journal of Temperate Forestry Research

基　　金：中央级公益性科研院所基本科研业务费专用资金(CAFYBB2016SY035)。

摘　　要：【目的】小白鹭是湿地生态系统中常见食肉性水鸟,其组织器官的重金属分布特征与栖息地的污染状况密切相关。卵壳是一种易于获取、又无损伤性样品,是反映湿地生态系统重金属污染状况的良好检材。本文旨在掌握鄱阳湖小白鹭重金属污染状况及重金属富集特征,为开展鄱阳湖湿地重金属污染防治和水鸟保护提供数据和科学支撑。【方法】本文以鄱阳湖地区3个典型鹭鸟分布区的小白鹭卵壳为研究对象,通过电感耦合等离子质谱仪(ICP-MS)获得卵壳8种重金属(Cr、Cu、Ni、Zn、As、Pb、Cd、Hg)含量、3个分布区土壤样品中8种重金属含量和重金属富集系数。【结果】研究表明3个区域小白鹭卵壳内Zn含量均为最高,其他7种重金属含量有一定差异,分析3个区域小白鹭卵壳对土壤富集系数发现,Hg的富集系数远高于其他7种重金属。【结论】小白鹭受到鄱阳湖环境中重金属污染的影响,且重金属的含量受到食物链的影响。【Objective】Little egret is a common carnivorous waterbird in the wetland ecosystem.The distribution of heavy metals in its tissues reflects the habitat environment pollution.Eggshell is an easy-to-obtain and non-invasively sample,which is a good test material to reflect the heavy metal pollution in wetland ecosystems.This study aims to understand the heavy metal pollution level and bioaccumulation factors of little egret in Poyang Lake,so as to provide scientific data support for the management and protection of heavy metal pollution and waterbirds.【Method】The eggshells of little egrets from three typical distribution areas in Poyang Lake were taken as the research object.The contents of eight heavy metals(Cr,Cu,Ni,Zn,As,Pb,Cd,Hg)in the eggshell and the heavy metal bioaccumulation factors were analyzed by Inductively Coupled Plasma Mass Spectrometer(ICP-MS).【Result】The study showed that the Zn content in the eggshells of the little egrets in the three regions was the highest,and the contents of the other seven heavy metals were different.The analysis of the soil bioaccumulation factors of the eggshells of the little egrets in the three regions found that the bioaccumulation factors of Hg were much higher than that of the other seven.【Conclusion】These results indicated that little egrets are affected by heavy metal pollution in Poyang Lake,and the content of heavy metals is affected by the food chain.

关 键 词：鄱阳湖 小白鹭 重金属 重金属富集系数 

分 类 号：X174[环境科学与工程—环境科学]