CAJ | 학술논문

本文以银杏树木年轮为研究材料，对采自临沂市区及郊区的两组银杏树轮样品，经室内处理后定量测定了银杏树轮中重金属铅元素的含量，研究了临沂市近三十年来城市大气环境中重金属铅的污染状况。测定结果表明，临沂市郊区的树木年轮中重金属铅的含量大致呈增大趋势，市区的树木年轮中铅的含量波动很大。结合采样点及周围环境、临沂市社会经济发展状况分析，认为郊区银杏树木年轮中的铅元素主要来源于祊河河水和大气，而市区银杏树木年轮中的铅元素含量主要来源于大气，与汽车尾气关系密切。通过对测定结果和临沂市大气及水环境中铅的污染源分析，提出了降低铅含量浓度，提高临沂市生态环境质量的措施。
본문이은행수목년륜위연구재료，대채자림기시구급교구적량조은행수륜양품，경실내처리후정량측정료은행수륜중중금속연원소적함량，연구료림기시근삼십년래성시대기배경중중금속연적오염상황。측정결과표명，림기시교구적수목년륜중중금속연적함량대치정증대추세，시구적수목년륜중연적함량파동흔대。결합채양점급주위배경、림기시사회경제발전상황분석，인위교구은행수목년륜중적연원소주요래원우팽하하수화대기，이시구은행수목년륜중적연원소함량주요래원우대기，여기차미기관계밀절。통과대측정결과화림기시대기급수배경중연적오염원분석，제출료강저연함량농도，제고림기시생태배경질량적조시。
In orderto study the latest30 years'pollution ofPb w hich is one ofthe heavy m etalelem ents in Linyi,the paper therefore w as w ritten on the basis of the research em ploying tw o groups of G ingko Trees in the urban and suburb of Linyi respectively as the sam ples to study the heavy m etalcontentof their tree-rings by interior quantitative exam ination.The results show ed thatthe contentof Pb in the tree-rings in the suburbs of Linyigenerally tended to increase w hile the contentin urban fluctuated considerably.C om bined w ith the sam pling points and the surroundings as w ellas the socio-econom ic developm entin Linyi,itis believed thatthe m ain source ofPb from the tree-rings in the suburbs is atm osphere and the B eng R iver.M eanw hile, the m ain source ofthatin urban isthe atm osphere and vehicle exhaust.U pon the analysisofthe resultsand the source ofpollution such as w ater and atm osphere, m easures are proposed concerning the decrease of the density of Pb and the increase of the ecologicalenvironm entalquality in Linyi.