%0 Journal Article
%T Study on the effects of mono-contamination of Cu2+ and associated-contamination of Cu2+ and Cd2+ on enzyme activities in flooded paddy soil<br>铜离子与铜镉离子复合污染对稻田土壤酶活性的影响研究
%A HUANG Zheng
%A MIN Hang
%A L Zhen-mei
%A JIN Wen-ming
%A Yuan Hai-ping
%A <br>黄峥
%A 闵航
%A 吕镇梅
%A 金文明
%A 袁海平
%J 浙江大学学报(农业与生命科学版)
%D 2006
%I Zhejiang University Press
%X The effects of monocontamination of Cu~(2 ) and associated-contamination of Cu~(2 ) and Cd~(2 ) on enzyme activities in flooded paddy soil were studied by analysis of soil enzyme activities.The results showed that the associated contamination of heavy metals was not only different from single element,but also the effects on soil enzyme activities were distinct.In paddy soil,Cu~(2 ) inhibited the enzyme activities in the order: phosphatase>urease>hydrogen peroxidase and differed from that of inhibition of Cu~(2 )-Cd~(2 ) associated-contamination: urease>phosphatase>hydrogen peroxidase.Urease and phosphatase activities were decreased significantly with increasing contaminations.The multivariate regression analysis indicated that urease and phosphatase activities were very obviously related to both mono-contamination of Cu~(2 ) and Cu~(2 )-Cd~(2 ) associated-contamination.The characteristics of Cu~(2 )-Cd~(2 ) associated pollution for urease exhibits synergistic effect;however,it pointed out antagonistic effect for phosphatase and hydrogen peroxidase at different levels.It suggested that it is feasible to use urease and phosphatase activities as a primary biochemical parameter to evaluate and assess heavy metals compound pollution in paddy soil.
%K heavy metal
%K associated-contamination
%K enzyme activity<br>重金属
%K 复合污染
%K 土壤酶
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=03F54A49DE00578AA0E5DDF5BC021AA7&cid=298920A27C9BAA22346FCA384240FAA4&jid=466C05D88593309B3EB5CF34361E6426&aid=749012C22A4BBE72&yid=37904DC365DD7266&vid=9971A5E270697F23&iid=94C357A881DFC066&sid=2E15A588990CC690&eid=12AD09BCF4A6E651&journal_id=1008-9209&journal_name=浙江大学学报(农业与生命科学版)&referenced_num=7&reference_num=20