CAJ | 학술논문

为确定银川市阅海湿地湖水底泥中重金属的污染状态及潜在的生态危险，笔者采集了该湿地底泥，分析了8种常见重金属(As、 Cd、 Cr、 Cu、 Hg、 Ni、 Pb、 Zn)的含量及富集情况，又以现代工业化前正常颗粒底泥中重金属含量的最高背景值和自然背景值为参比值，对湿地底泥重金属的富集系数、生态危害系数及各采样点的生态危害指数进行探讨，最后运用 Lars Hankanson 潜在生态危害指数法对湿地底泥中重金属的生态危害程度做了评价。结果表明：以现代工业化前正常颗粒底泥中重金属含量的最高背景值为参比值，阅海湿地重金属富集顺序为 Cr＞Pb＞Zn＞Cu＞As＞Cd＞Hg；各重金属单因子生态危害程度为 Cd＞As＞Hg＞Pb＞Cu＞Cr＞Zn，其中4号采样点的重金属潜在生态危害程度较高，其他采样点生态危害程度较轻微。总而言之，银川市阅海湿地底泥重金属的生态危害程度还是较小的。
위학정은천시열해습지호수저니중중금속적오염상태급잠재적생태위험，필자채집료해습지저니，분석료8충상견중금속(As、 Cd、 Cr、 Cu、 Hg、 Ni、 Pb、 Zn)적함량급부집정황，우이현대공업화전정상과립저니중중금속함량적최고배경치화자연배경치위삼비치，대습지저니중금속적부집계수、생태위해계수급각채양점적생태위해지수진행탐토，최후운용 Lars Hankanson 잠재생태위해지수법대습지저니중중금속적생태위해정도주료평개。결과표명：이현대공업화전정상과립저니중중금속함량적최고배경치위삼비치，열해습지중금속부집순서위 Cr＞Pb＞Zn＞Cu＞As＞Cd＞Hg；각중금속단인자생태위해정도위 Cd＞As＞Hg＞Pb＞Cu＞Cr＞Zn，기중4호채양점적중금속잠재생태위해정도교고，기타채양점생태위해정도교경미。총이언지，은천시열해습지저니중금속적생태위해정도환시교소적。
In order to investigate heavy metal pollution and its potential ecological risk in sediments of Yuehai wetland, content and accumulation of heavy metals (As, Cd, Cr, Cu, Hg, Ni, Pb, Zn) were investigated. The highest values for heavy metals concentrations in sediments before the modern industrialization of the world and the natural background values were used to analyze the accumulation coefficient and potential ecological risk (PER) coefficients for heavy metal. The PER index for each sample location was also discussed. The method for evaluating PER index presented by Lars Hankanson was applied to assess the ecological risk. The results showed that when the highest values for heavy metals concentrations in sediments before the modern industrialization of the world were taken as references, the accumulation order for those heavy metals was Cr>Pb>Zn>Cu>As>Cd>Hg, the potential risk order of elements was Cd>As>Hg>Pb>Cu>Cr>Zn. The 4th sample point was under the highest potential risk,, which is much higher than other elements, the while the others had relatively small risk. To sum up, the potential ecological risk of Yuehai wetland was light, at least not very serious.