|本期目录/Table of Contents|

[1]石兰英,田新民.兴凯湖地区不同土地利用方式下土壤重金属污染情况及潜在生态风险[J].江苏农业科学,2020,48(09):282-286,297.
 Shi Lanying,et al.Pollution and ecological risk assessment of heavy metals in soils under different land use patterns in Xingkai Lake,Heilongjiang Province[J].Jiangsu Agricultural Sciences,2020,48(09):282-286,297.
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兴凯湖地区不同土地利用方式下土壤重金属
污染情况及潜在生态风险
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《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第48卷
期数:
2020年第09期
页码:
282-286,297
栏目:
资源与环境
出版日期:
2020-05-05

文章信息/Info

Title:
Pollution and ecological risk assessment of heavy metals in soils under different land use patterns in Xingkai Lake,Heilongjiang Province
作者:
石兰英 田新民
牡丹江师范学院,黑龙江牡丹江 157011
Author(s):
Shi Lanyinget al
关键词:
兴凯湖地区土壤重金属生态风险沼泽旱田水田
Keywords:
-
分类号:
X53
DOI:
-
文献标志码:
A
摘要:
为了评价兴凯湖地区在不同土地利用方式下的土壤重金属状况与潜在的生态风险,通过分析该地区3种土壤类型(沼泽、旱田和水田)中有机质及砷(As)、铅(Pb)、镉(Cd)、铬(Cr)、铜(Cu)、锌(Zn)和镍(Ni)等7种重金属含量,以黑龙江省土壤背景值作为参比值,用Hkanson潜在生态危害指数评价重金属的潜在生态风险。结果表明,兴凯湖地区在将沼泽垦殖为水田和旱田的过程中,降低了土壤重金属的累积量;在3种类型的土壤中,7种重金属中Cd的含量均显著高于黑龙江省和国家土壤背景值,并超过国家土壤质量二级标准,其他6种重金属含量均未超过黑龙江省土壤背景值和国家土壤质量标准。在旱田和水田的不同土壤层(0~10、10~20、20~30 cm),Cd含量随土层加深逐渐降低,存在外源性输入特征,而其他6种重金属含量无显著梯度变化。变异系数分析结果表明,As和Cd的变幅较大。重金属和有机质间的相关性分析结果表明,Cu含量与Cd、Ni、Zn含量之间均呈显著正相关(r=1.000、1.000、0.999,P<0.05);其他重金属含量之间的相关性均不显著;Zn、Cr含量与有机质含量呈显著负相关(P<0.05);其他重金属含量与有机质含量之间的相关性均不显著。Hkanson潜在生态危害评价结果表明,3种类型的土壤整体上表现为强潜在生态风险,Cd的贡献率最高,为高生态风险元素。综合研究结果得出,兴凯湖地区在进行农业生产的过程中,应采取相应措施,防控农产品Cd污染。
Abstract:
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备注/Memo

备注/Memo:
收稿日期:2019-03-19
基金项目:黑龙江省教育厅基本科研业务费(编号:1353ZD015);牡丹江师范学院青年项目(编号:QN2019009)。
作者简介:石兰英(1980—),女,黑龙江绥滨人,硕士,讲师,主要从事植物生态学、生物地理学方向的研究。E-mail:swxsly@126.com。
更新日期/Last Update: 2020-05-05