Journal of Food, Agriculture and Environment

Vol 7, Issue 1,2009
Online ISSN: 1459-0263
Print ISSN: 1459-0255

Effects of simulated acid rain on soil acidification, availabilities and temporal and spatial variations of Cu and Pb in a vegetable field under natural conditions


Xiaoming Hu 1, Chengxiao Hu 1*, Xuecheng Sun 1, Mingxing Lu 2, Bin Su 3, Anyong Cao 4

Recieved Date: 2008-09-19, Accepted Date: 2008-12-12


Under natural conditions, a field trial was introduced to explore influences of soil acidification on availabilities of Cu and Pb and their transferences in soil vertical profiles. Four different levels of simulated acid rain (SAR) were sprayed to the field to acidify the soils so as to observe behaviors of available Cu and Pb. Soil samples were collected from four soil layers: 0~10, 10~20, 20~30 and 30~60 cm. Results indicated that SAR could effectively decrease soil pH of four layers. With the decline of soil pH, contents of available Cu and Pb increased generally and high SAR level resulted in greater increases. In terms of vertical distributions in soil profiles, soil available Cu rose with the depth, indicating a downward movement of Cu to deeper soil layers; while soil available Pb increased only in the layer of 20~30 cm, but decreased dramatically in the deep soil layer (30~60 cm). This suggested that the available Cu was easy to transfer and available Pb was relatively immobile, under the influences of soil acidification. The results also revealed, with the prolongation of soil acidification, contents of soil available Pb increased, whereas contents of soil available Cu decreased, which implied soil available Cu was inclined to be transferred out of soils into groundwater, posing a threat to groundwater system, and soil available Pb was easier to accumulate in soils and be taken up by plants, posing a threat to the food security.


Field study, soil acidification, heavy metals, Cu, Pb, availability, transference

Journal: Journal of Food, Agriculture and Environment
Year: 2009
Volume: 7
Issue: 1
Category: Agriculture
Pages: 92-96

Full text for Subscribers

Note to users

The requested document is freely available only to subscribers/registered users with an online subscription to the Journal of Food, Agriculture & Environment. If you have set up a personal subscription to this title please enter your user name and password. All abstracts are available for free.

Article purchasing

If you like to purchase this specific document such as article, review or this journal issue, contact us. Specify the title of the article or review, issue, number, volume and date of the publication. Software and compilation, Science & Technology, all rights reserved. Your use of this website details or service is governed by terms of use. Authors are invited to check from time to time news or information.

Purchase this Article:   20 Purchase PDF Order Reprints for 15

Share this article :