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当前位置: 首页 > 文章 > 广东大宝山矿区废石场土壤酸化特征分析 水土保持学报 2013,27 (6) 46-50
Position: Home > Articles > Characteristics of Soil Acidification of Waste Rock Dumps in Dabaoshan Mine of Guangdong Province Journal of Soil and Water Conservation 2013,27 (6) 46-50

广东大宝山矿区废石场土壤酸化特征分析

作  者：
郭彦彪;冯宏;周波;孔祥燏;陈科名;戴军
单  位：
华南农业大学资源环境学院
关键词：
金属矿山;废石场;交换性酸;电导率;大宝山
摘  要：
以大宝山废石场为对象,研究废石场土壤的酸化程度和特征,并对其电导率和缓冲作用进行分析。结果表明,不同废石场之间土壤酸化程度、电导率和对碱的缓冲能力差异显著,改良措施的制定需要区别对待;除D点外,其它废石场土壤酸化非常严重,属极强酸性土壤,且交换性铝含量和电导率比较高,铝、盐胁迫可能是限制植物生长的因素之一;pH值在土壤上下层之间无显著差异,但酸化严重的土壤交换性酸、电导率和对碱的缓冲能力均为下层显著高于上层,表明降雨对废石场土壤有明显的淋溶作用,表层土壤酸化程度有减弱趋势。
译  名：
Characteristics of Soil Acidification of Waste Rock Dumps in Dabaoshan Mine of Guangdong Province
作  者：
GUO Yan-biao;FENG Hong;ZHOU Bo;KONG Xiang-yu;CHEN Ke-ming;DAI Jun;College of Natural Resources and Environment,South China Agricultural University;Key Laboratory of Ministry of Agriculture for South China Farmland Conservation;
关键词：
metal mine;;waste rock dumps;;exchangeable acid;;electric conductivity;;Dabaoshan
摘  要：
Taking waste rock dumps in Dabaoshan mine as the object,the degree and characteristic of soil acidification in waste rock dumps were studied.Electric conductivity and buffer capacity of soil were analyzed.The results showed that soil acidification degree,electric conductivity and alkali buffer capacity were significantly different among different waste rock dumps,so soil amending measures also should be different.Except sampling point D,soil acidifications were very serious and classified into strong acid soil with higher exchangeable aluminium concentration and electric conductivity in other waste rock dumps.This indicated that aluminum and salt stress might be the factors that constrained plant growth.In serious acidified soil,the exchangeable acid,electric conductivity and alkali buffer capacity were significantly lower in 0-20cm depth than in 20-40cm depth in soil profile,but non-difference for pH value.It showed that soil leached obviously by rainfall in waste rock dumps and the acidification degree of topsoils gradually reduced.

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