福建农林大学学报（自然科学版）2018，Vol.47Issue(2)：236-242,7.DOI:10.13323/j.cnki.j.fafu(nat.sci.).2018.02.017
洪泽湖湿地重金属含量与N2O释放特征及关系
Relationship between heavy metal contents and N2O emission in sediments from Hung-tse Lake wetland
摘要
Abstract
To investigate the potential relationship between heavy metal contents and N2O emissions,soils were sampled from 5 typi-cal land use/cover types,namely reed cover,poplar forest,willow forest,paddy field and aquafarm in the meeting place of Hung-tse Lake and Huai River.The results showed that contents of Cd,Cr,Cu,Pb and Zn in paddy field were(0.3±0.0),(72.4±6.1), (37.7±1.4),(24.8±0.5) and (115.3±6.2) mg.kg-1,respectively,which were significantly higher than those from other 4 land use/cover types. Meanwhile,average N2O emission rate in paddy field [(5.83± 1.82) mg.kg-1.h-1] was notably higher than those of other 4 land use/cover types. In contrast,no significant difference among reed cover,poplar forest,willow forest and aqua-farm was found for N2O emissions. In addition,N2O emission rates in soils were significantly positively correlated with the contents of Cd and Cu (P<0.01),and the contents of As,Mn and Zn(P<0.05) under reed cover. Combined with profiles of Cd,Cu,Mn, Zn and As,it can be concluded that N2O emissions under reed cover were substantially stimulated by low contents of Cd,Cu,Mn, Zn,and high As contents. The results suggest that land use change would notably increase the uncertainty of relationship between heavy metal contents and N2O emissions.关键词
重金属/N2O/洪泽湖/土地利用/覆被类型Key words
heavy metal/N2O/Hung-tse Lake/land use/cover change type分类
资源环境引用本文复制引用
王圣燕,陈圆,徐勇峰,韩建刚,李萍萍..洪泽湖湿地重金属含量与N2O释放特征及关系[J].福建农林大学学报（自然科学版）,2018,47(2):236-242,7.基金项目
林业科技成果国家级推广项目(201637) （201637）
江苏省"青蓝工程"资助项目(201615) （201615）
江苏高校优势学科建设工程资助项目(PAPD). （PAPD）
