中国环境科学
中國環境科學
중국배경과학
CHINA ENVIRONMENTAL SCIENCE
2014年
8期
2140-2147
,共8页
有机氯农药%水鸟%洪湖湿地
有機氯農藥%水鳥%洪湖濕地
유궤록농약%수조%홍호습지
organochlorine pesticides (OCPs)%waterbird%Honghu wetland
对我国中部地区洪湖湿地6种水鸟肝脏中20种有机氯农药进行了测量.发现DDTs是最主要的OCPs,约占总OCPs的38.3%~93.0%,其平均含量范围为2.74~121.72ng/g 湿重.HCHs和DDTs的富集形态说明洪湖湿地这些有机氯农药主要来源于历史残留.不同水鸟肝脏中∑OCPs含量差异显著(P<0.01),表现为白鹭和池鹭体内OCPs含量(37.91~137.22ng/g 湿重)要远高于其他水鸟(5.00~21.49ng/g 湿重),这种差异的产生主要与其饮食习性有关.大多数水鸟HCHs性别间基本无差异；但白鹭、池鹭雄性水鸟中总OCPs平均含量(白鹭：136.90ng/g 湿重；池鹭：52.41ng/g 湿重)高于雌性水鸟(白鹭：126.60ng/g 湿重；池鹭：49.78ng/g 湿重).与已有研究相比,洪湖湿地水鸟体内OCPs含量处于较低水平.风险评价结果表明研究区水鸟肝脏中OCPs含量不会对该地区水鸟种群产生不利效应.
對我國中部地區洪湖濕地6種水鳥肝髒中20種有機氯農藥進行瞭測量.髮現DDTs是最主要的OCPs,約佔總OCPs的38.3%~93.0%,其平均含量範圍為2.74~121.72ng/g 濕重.HCHs和DDTs的富集形態說明洪湖濕地這些有機氯農藥主要來源于歷史殘留.不同水鳥肝髒中∑OCPs含量差異顯著(P<0.01),錶現為白鷺和池鷺體內OCPs含量(37.91~137.22ng/g 濕重)要遠高于其他水鳥(5.00~21.49ng/g 濕重),這種差異的產生主要與其飲食習性有關.大多數水鳥HCHs性彆間基本無差異；但白鷺、池鷺雄性水鳥中總OCPs平均含量(白鷺：136.90ng/g 濕重；池鷺：52.41ng/g 濕重)高于雌性水鳥(白鷺：126.60ng/g 濕重；池鷺：49.78ng/g 濕重).與已有研究相比,洪湖濕地水鳥體內OCPs含量處于較低水平.風險評價結果錶明研究區水鳥肝髒中OCPs含量不會對該地區水鳥種群產生不利效應.
대아국중부지구홍호습지6충수조간장중20충유궤록농약진행료측량.발현DDTs시최주요적OCPs,약점총OCPs적38.3%~93.0%,기평균함량범위위2.74~121.72ng/g 습중.HCHs화DDTs적부집형태설명홍호습지저사유궤록농약주요래원우역사잔류.불동수조간장중∑OCPs함량차이현저(P<0.01),표현위백로화지로체내OCPs함량(37.91~137.22ng/g 습중)요원고우기타수조(5.00~21.49ng/g 습중),저충차이적산생주요여기음식습성유관.대다수수조HCHs성별간기본무차이；단백로、지로웅성수조중총OCPs평균함량(백로：136.90ng/g 습중；지로：52.41ng/g 습중)고우자성수조(백로：126.60ng/g 습중；지로：49.78ng/g 습중).여이유연구상비,홍호습지수조체내OCPs함량처우교저수평.풍험평개결과표명연구구수조간장중OCPs함량불회대해지구수조충군산생불리효응.
Twenty organochlorine pesticides (OCPs) were measured in the liver of six waterbird species from Honghu wetland. Among OCPs, DDTs were the most prevalent compounds (38.3%~93.0%), with average concentration ranging from 2.74 to 121.72ng/g wet weight. The accumulation profiles of HCHs and DDTs suggested that these OCPs in the Honghu wetland were largely derived from historical usage. Significant interspecific differences were observed in the levels of sum OCPs in the liver of all waterbirds (P<0.01). Concentrations of total OCPs in little egrets (Egretta garzetta) and chinese-pond herons (Ardeola bacchus) (37.91~137.22ng/g wet weight) were higher than those in the other birds (5.00~21.49ng/g wet weight), which might be attributed to their different dietary habits. Higher average concentrations of OCPs were observed in males (little egrets:136.90ng/g wet weight;chinese-pond herons:52.41ng/g wet weight) than in females (little egrets: 126.60ng/g wet weight; chinese-pond herons: 49.78ng/g wet weight) for little egrets and chinese-pond herons. Compared with other regions worldwide, concentrations of OCPs in waterbirds from Honghu wetland were at low levels. The analysis of risk assessment indicated that the concentrations of OCPs detected in the present study were not expected to pose any hazard to waterbird populations.
