ABSTRACT
This chapter focuses on the environmental impact of heavy metals in soils of China. Certain toxic heavy metals are taken up by crops, which can thus become a hazard to human and animal health and other heavy metals, can first lead to reduced crop yields. The chapter describes agricultural control measures for the remediation and restoration in heavy-metal contaminated agroecosystems. In China, there are three main causes of soil pollution: gas emission, mine and smelter discharges, and sewage irrigation and sludge application on agricultural land. China has a big nickel production base which is located in Jinchuan, Gansu. The remediation and restoration of soils contaminated by pollutants have recently become a great practical problem. Remedial measures of the soil require, insofar as possible, a full understanding of pollutants, soils, and crop properties. Many agricultural measures have been recommended for the remediation and restoration of the heavy metals contaminated soils in China.
