Assessing the effect of long-term crop cultivation on distribution of Cd in the root zone
文献类型：期刊论文
| 作者 | Chen, Weiping ; Wu, Laosheng ; Chang, Andrew C. ; Hou, Zhenan |
| 刊名 | ECOLOGICAL MODELLING
 |
| 出版日期 | 2009-08-10 |
| 卷号 | 220期号:15页码:1836-1843 |
| 关键词 | Model Fate and transport Trace elements Cropland soil Mass balance |
| 中文摘要 | Trace elements such as cadmium (Cd) may be inadvertently added to cropland soils through application of fertilizers, irrigation water, and other amendments. These toxic trace elements pose a potentially threat to soil quality and, through the food chain transfer, to human health. A generalized soil trace element mass balance model that accounts for the interactive processes governing the reactions of trace elements in soils, and consequently removed with crop harvest and leaching out of the soil profile with irrigation water was developed in this research. The model conceptually approximates the mechanisms and kinetics of a real field cropland system. The model was used to evaluate the long-term cultivation on distribution of Cd in California croplands. Under typical California cropping practices, Cd added into the soils accumulated primarily in the plow layer while the Cd content below the plow layer was barely affected. After 100 years of continuous cultivation, the soil Cd content of the plow layer increases from the background level 0.22 mg kg(-1) to 0.40 mg kg(-1). The accumulation of Cd in the plow layer is in proportion to the external inputs and is affected by the soil and plant characteristics, and management practices. The model can be used to evaluate the environmental fates of other toxic element in soils with case specific parameters. (C) 2009 Published by Elsevier B.V. |
| WOS记录号 | WOS:000267585400011 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/21360]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Chen, Weiping,Wu, Laosheng,Chang, Andrew C.,et al. Assessing the effect of long-term crop cultivation on distribution of Cd in the root zone[J]. ECOLOGICAL MODELLING,2009,220(15):1836-1843. |
| APA | Chen, Weiping,Wu, Laosheng,Chang, Andrew C.,&Hou, Zhenan.(2009).Assessing the effect of long-term crop cultivation on distribution of Cd in the root zone.ECOLOGICAL MODELLING,220(15),1836-1843. |
| MLA | Chen, Weiping,et al."Assessing the effect of long-term crop cultivation on distribution of Cd in the root zone".ECOLOGICAL MODELLING 220.15(2009):1836-1843. |
入库方式： OAI收割
来源：生态环境研究中心
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