典型农业土壤重金属的累积特征与源解析

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	典型农业土壤重金属的累积特征与源解析
	刘小诗 1; 李莲芳 1; 曾希柏 1; 胡新 2
刊名	核农学报
	2014
卷号	28 期号:7 页码:1288-1297
关键词	农业土壤重金属累积来源商丘
ISSN号	1000-8551
其他题名	Characterization of Heavy Metal Accumulation in Typical Agriculture Soils and Its Source Analysis
英文摘要	为探明商丘市农业土壤重金属累积特征及规律,调查研究商丘市不同利用方式下的土壤重金属含量。结果表明,商丘市农业土壤重金属呈现不同程度的累积趋势,其As、Cd、Cu、Pb和Zn的含量均值分别为10.74、0.24、21.87、15.33和70.93mg·kg~(-1)。通过不同土地利用方式比较发现,重金属As、Cu、Zn含量以设施菜地最高,Pb在绿化地、Cd在果园的含量最高,而森林土重金属含量普遍较低,其Cu、Zn含量显著低于设施菜地(P<0.05),Pb含量以森林土和设施菜地较低。不同土壤按Cd累积程度排序为:果园>露天菜地>设施菜地>绿化地>麦地>森林土;集约化生产方式下,设施菜地重金属含量随设施年限的增加而不断累积,导致相应的环境风险增加,此过程与化肥和有机肥的不当投入有关。本文研究为规避农业土壤重金属累积风险及开展区域重金属污染防控提供一定科学依据。; Investigation on the agricultural soils under different utilization pattern in Shangqiu City,Henan Province was carried out to clarify the accumulation characteristics of heavy metals in agricultural soils through the analysis of heavy metal content of agricultural soil samples collected in this region. Results indicated that heavy metal content in soils accumulated to some degree,and the mean values of arsenic (As),cadmium (Cd),copper (Cu),lead (Pb) and zinc(Zn) content were 10. 74、0. 24、21. 87、15. 33、70. 93mg kg~(-1),respectively. In comparison with different agricultural soils under different utilization patterns,the highest content of As,Cu,and Zn occurred in greenhouse vegetable land under protected cultivation,the highest contents of Pb and Cd were found in greenbelt area and orchard soils, respectively,and the least content of heavy metals appeared in forest soils. The content of Cu and Zn in greenhouse vegetable soils were significantly higher than those of forest soils as control (P < 0. 05). Relatively lower lead content was found out in greenhouse vegetable land and green belt land. The Cd content in agricultural soils with different utilization patterns ranked in the order of orchard > open vegetable land > greenhouse vegetable land under protected cultivation > green belt land > wheat field > forest soil. Under intensive production mode,heavy metal content of As, Cd,Cu,Pb,and Zn all increased to some degree with the cultivation year prolonged and corresponding environmental risk increased. Heavy metal accumulation in greenhouse vegetable land was closely related to incorrect input of chemical fertilizer and manure. This study provides a scientific basis for advoiding the risk and preventing the accumulation of heavy metals in soils of region.
学科主题	环境污染及其防治 ; 环境质量评价与环境监测
语种	中文
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/16906]
专题	农业环境与可持续发展研究所_环境修复研究室
作者单位	1.中国农业科学院农业环境与可持续发展研究所, 农业部农业环境重点开放实验室, 北京, 100081 2.商丘市农林科学院, 河南, 商丘, 476000
推荐引用方式 GB/T 7714	刘小诗,李莲芳,曾希柏,等. 典型农业土壤重金属的累积特征与源解析[J]. 核农学报,2014,28(7):1288-1297.
APA	刘小诗,李莲芳,曾希柏,&胡新.(2014).典型农业土壤重金属的累积特征与源解析.核农学报,28(7),1288-1297.
MLA	刘小诗,et al."典型农业土壤重金属的累积特征与源解析".核农学报 28.7(2014):1288-1297.