我国砖红壤、赤红壤、红壤环境容量研究

Study on the Soil Environmental Cepacity of Latosol etc. in China

系统研究了砖红壤、赤红壤等土壤中重金属和矿物油对农作物、微生物、地表水和地下水的污染效应及重金属的形态特征。制订了砖红壤等四种土壤中Cd、Pb、Cu、As和矿物油的土壤基准;在土壤环境中物流调查研究的基础上,以系境动力学理论为依据,建立了土壤容量数学模型,确定了砖红壤等四种土壤容量。提出了区域水质灌溉标准,污泥农用标准及污染物总量控制规则;建立的土壤容量计算机模拟实验系统SCME,可进行容量数值模拟和土壤污染预测等,为推广应用土壤基准和容量提供了重要工具。

The pollution effects of metals and oil (in Latosol, Lateratic red earth, Red earth etc.) on crops, microorganism, ground water and underground water as well as the form and speciality of metals in the soil have been studied. Summing up the above results, the criticul contents for cadmium, lead, copper, arsenic, and oil were formulated in Latosol, etc. Based on this and the study on the motion of pollutants, mathematic model of soil capacity was set up by means of the system kinetic theory. The value of the soil environmental capacity of metals and oil were determined in Latosol, etc. by this model. On the basis of this, the criteria content for the quality of irrigation water sludge for agricultural use and the ruleof control for total amount of pollutants have been determined by soil environmental capacity. The simulation experiment system of computer for soil capacity SCME is established for numerical simulation of soil capacity and soil pollution as an important means for using soil critical concentration and environmental capacity.