http://awsqikan.cqvip.com/Qikan/Article/Detail?id=50105579 Nettet摘要 对昆承湖9个采样点柱状沉积物中主要重金属元素(Pb,Cu,Zn,Cd,Cr)的垂向分布进行了测定,结果表明,5种重金属元素具有非常相似的垂向变化特征,表现为随沉积深度增加含量降低的态势;横向上表现为靠近污染源的含量高,远离污染源的含量低。 各重金属元素均与TOC之间呈显著正相关关系,表明沉积物中 ...
Impact of climate change on fluctuations of grain harvests in China ...
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