摘要
通过 3种模拟酸沉降溶液对福建和贵阳两种森林土壤样品的连续浸泡试验 ,研究了土壤对酸沉降中 SO42 -和 NO3-的吸附 ,以及盐基离子输入对这种吸附的影响 .结果表明 ,2种土壤对 SO42 -均有一定的吸附能力 ,但福建土壤的吸附量比贵阳土壤大 .土壤对 SO42 - 的吸附与酸沉降中 SO42 - 浓度及土壤水溶性 SO42 - 含量有关 ,但高浓度的盐基离子输入会降低 SO42 -的吸附量 .土壤对 NO3-的吸附主要发生在表土中 ,且比 SO42 -的吸附量低 。
Adsorption of sulfate and nitrate in two forest soils in southern China affected by acid deposition and by input of base cations was studied through a batch experiment by using three simulated acid deposition solutions. The results show that the two tested soils,the Fujian soil and the Guiyang soil, have a certain ability to adsorb SO 4 2- , but the former could adsorb more SO 4 2- than the latter. SO 4 2- adsorption is related to SO 4 2- concentration in acid deposition and water extractable SO 4 2- content in soil; however, input of high concentration base cations decreases this adsorption. NO 3 - adsorption mostly happens in top soils. Although lower than SO 4 2- adsorption, the NO 3 - adsorption in the tested soils is higher than expected.
出处
《湖南农业大学学报（自然科学版）》
CAS
CSCD
2000年第3期200-204,共5页
Journal of Hunan Agricultural University(Natural Sciences)
基金
国际合作项目
