CAJ | 학술논문

恶臭气体苯乙烯在环境中的长期暴露可致人体产生黏膜与眼睛刺激以及肠胃功能紊乱，甚至产生疼痛、疲劳、乏力、抑郁和神经病变，严重地危害着人体的健康。分别于生长季（2004年7月）和非生长季（2005年1月）在苏北海岸带盐沼沿环境梯度采用静态箱技术原位测定苯乙烯通量。结果表明：研究区大气中苯乙烯的浓度接近于国家规定的厂界污染源排放的最大允许值，在由海向陆的梯度上，大气中苯乙烯的浓度变化表现为近陆海点高而远陆海点低，由此推断，本区大气中苯乙烯主要源自沿海化学和石化工业排放以及外海苯乙烯的大气、潮水和潮流的横向输送；海岸带盐沼生态系统中，盐沼植物和土壤对外源苯乙烯的自然移除是苯乙烯的重要汇，盐沼对苯乙烯的自然移除能力具有显著的季节和空间变化性，并具有显著的物种依赖性。高等植物对苯乙烯的自然移除能力可能与高等植物生物量、叶面蜡质含量以及气孔丰度有关。而土壤对苯乙烯的自然移除能力可能取决于土壤温度、孔隙度、有机质含量、全氮含量以及可溶性盐总量。互花米草的入侵并没有增加海岸带盐沼对苯乙烯气体的自然移除能力，没有显著的增汇效应。
악취기체분을희재배경중적장기폭로가치인체산생점막여안정자격이급장위공능문란，심지산생동통、피로、핍력、억욱화신경병변，엄중지위해착인체적건강。분별우생장계（2004년7월）화비생장계（2005년1월）재소북해안대염소연배경제도채용정태상기술원위측정분을희통량。결과표명：연구구대기중분을희적농도접근우국가규정적엄계오염원배방적최대윤허치，재유해향륙적제도상，대기중분을희적농도변화표현위근륙해점고이원륙해점저，유차추단，본구대기중분을희주요원자연해화학화석화공업배방이급외해분을희적대기、조수화조류적횡향수송；해안대염소생태계통중，염소식물화토양대외원분을희적자연이제시분을희적중요회，염소대분을희적자연이제능력구유현저적계절화공간변화성，병구유현저적물충의뢰성。고등식물대분을희적자연이제능력가능여고등식물생물량、협면사질함량이급기공봉도유관。이토양대분을희적자연이제능력가능취결우토양온도、공극도、유궤질함량、전담함량이급가용성염총량。호화미초적입침병몰유증가해안대염소대분을희기체적자연이제능력，몰유현저적증회효응。
Acute exposure to styrene in humans results in mucous membrane and eye irritations as well as gastroin-testinal disorders .Chronic contact causes a variety of discomforts including headache ,fatigue ,weakness ,depres-sion ,and peripheral neuropathy ,and has a serious threat to human health .The fluxes of styrene were measured seasonally using static flux chambers along an elevational gradient of a salt marsh in the coastal area of Northern Jiangsu ,China .The results show that atmospheric concentration of styrene gas is closed to the maximum allowable concentration of anthropogenic sources in study area ,and the concentration of points close to land and sea is high and away from that is low .It is inferred that styrene of the atmosphere may be from external input of seawater , coastal chemical and petrochemical industries emissions .The plant and soil of coastal salt marsh ecosystem is impor-tant sink of styrene ,seasonal and spatial variation of natural absorption flux of styrene are significant ,and its strength has significant species dependent .The natural removal ability of higher plants to styrene may be related to biomass ,content of foliar wax and abundance of stomata ,and the ability of soil may depend on soil temperature ,po-rosity ,organic matter content ,nitrogen content ,and total soluble salts .Spartina alternif lora invasion did not in-crease removal capacity of styrene of coastal salt marsh ,and the effect of increasing carbon sink is not significant .