Details

Autor(en) / Beteiligte

• Liu, Xiao-li
• Zeng, Zhao-xia
• Chen, Zhe
• Tie, Bai-qing
• Chen, Qiu-wen
• Ye, Chang-cheng

Titel

Non-point loads of soluble cadmium by in situ field experiment with different landuses, in central Hunan province mining area

Ist Teil von

• Huanjing kexue, 2013-09, Vol.34 (9), p.3557

Ort / Verlag

China

Erscheinungsjahr

2013

Quelle

MEDLINE

Beschreibungen/Notizen

• Non-point source loads of heavy metals from contaminated soil has increasingly become the major cause of heavy metal concentrations of rivers and lakes surpassed the limitation value, while only few studies had focused on quantitative monitoring of soil heavy metal transportation to water, in situ field conditions. As reported, agricultural farmland heavy metal contamination was the major contamination problem, especially for cadmium (Cd) pollution in middle and downstream of Xiangjiang River. This study selected the typical Cd polluted agricultural watershed for a case study, three typical landuse types of rice, dry farmland and unused grassland with three replicate quadrates were carried out for natural rainfall runoff hydrology processes monitoring, from 2011-2012. Results showed that, precipitation pH value increased from spring to summer, soluble Cd concentration of spring runoff was significantly higher than that of summer rainfall runoff, which presented an obviously seasonal heterogeneity and had a ne