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菜地土壤剖面上重金属元素含量随时间的变化规律研究
引用本文:王国梁,周生路,赵其国,叶方,廖启林,华明.菜地土壤剖面上重金属元素含量随时间的变化规律研究[J].农业工程学报,2006,22(1):79-84.
作者姓名:王国梁  周生路  赵其国  叶方  廖启林  华明
作者单位:1. 南京大学城市与资源学系,南京,210093
2. 南京大学城市与资源学系,南京,210093;中国科学院南京土壤科学研究所,南京,210008
3. 江苏省地质调查研究院,南京,210018
基金项目:国家重点基础研究发展计划(973计划);江苏省国土生态地球化学调查项目
摘    要:在宜城镇蔬菜基地内选择种植时间为1a、5a、10a、15a、20a、45a的菜地序列,并选择周围的水稻田作为对照地,研究了菜地土壤中Hg、Cu、Zn、Cr、Pb 5种元素含量随种植时间的变化趋势。结果表明,在菜地的种植过程中,土壤中Hg、Cu、Zn、Cr和Pb 5种微量元素的含量有不断累积的趋势,应引起足够重视。以上元素含量随菜地利用时间的增加而累积的原因与菜地中大量投入的无机肥料(尤其是磷肥)、动物粪肥以及农药有关。此外,该文提出的土壤元素含量变化速率的概念,可以直观反映土壤中某一元素浓度的增加或减少的快慢,对预测土壤中元素浓度的变化趋势有参考价值。

关 键 词:菜地  微量元素  污染  动态  累积速率
文章编号:1002-6819(2006)01-0079-06
收稿时间:2/1/2005 12:00:00 AM
修稿时间:2005-11-08

Spatial and temporal changes of soil heavy metal concentrations in vegetable cultivation land
Wang Guoliang,Zhou Shenglu,Zhao Qiguo,Ye Fang,Liao Qilin and Hua Ming.Spatial and temporal changes of soil heavy metal concentrations in vegetable cultivation land[J].Transactions of the Chinese Society of Agricultural Engineering,2006,22(1):79-84.
Authors:Wang Guoliang  Zhou Shenglu  Zhao Qiguo  Ye Fang  Liao Qilin and Hua Ming
Institution:1. Department of Urban and Resource Sciences, Nanjing University , Nanjing 210093, China ; 2. Institute of Soil Sciences of Chinese Academy of Sciences, Nanjing, 210008, China; 3. Institute of Geological Survey of Jiangsu Province, Nanjing 210008, China
Abstract:The great changes have occurred in soil microelement concentration of vegetable land at Yixing region of China,constituting major objective for present study.The concentration data of Hg,Cu,Zn,Cr and Pb in soil profile were collected through field survey and laboratory tests.Based on statistical analysis,the authors found an increasing tendency of concentration of Hg,Cu,Zn,Cr and Pb in vegetable soil with planting time.In 0~60 cm soil profile,the concentrations of Hg and Cu exceeded the reference value of soil microelement concentration for natural background recommended by Chinese Environment Bureau.while the concentration of Cr did not(exceed) the natural background value;In 0~60 cm soil profile,the concentration of Pb in 20 yr and 45 yr(vegetable) land exceeded the natural background value.Moreover,the change rates of soil microelement(concentration) presented in this paper is a good index to express the changes of microelement concentration.
Keywords:vegetable land  microelement  contamination  spatial and temporal changes  change rates
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