论文部分内容阅读
1 前言要掌握土壤溶液的溶解元素的移动特性,重要的是要搞清溪流的水质特性,以及明确森林土壤对酸性降落物等外部影响的净化机能和森林生态系统的物质循环机理。一般来说,阴离子比阳离子难被粘土矿物吸附,所以土壤溶液的离子动态受不稳定的阴离子制约。据研究,pH值低的土壤,随着土壤溶液阴离子浓度的上升,土壤溶液的A1~(3+)浓度也上升。坡位和土壤深度不同,土壤的交换性阳离子量不同,土壤溶液的离子动态也随之变化。于是,在柳杉、扁柏林撒施NH_4Cl,使土壤溶液的NO_3~-和Cl-浓度增加,依此研究土壤的交换性阳离子量与土壤溶液的阳离子
1 Introduction To understand the mobility characteristics of dissolved elements in soil solutions, it is important to understand the water quality characteristics of streams and to clarify the decontamination function of the external impact of forest soils on acidic soils and the material recycling mechanisms of forest ecosystems. In general, anions are more difficult to adsorb than cations by clay minerals, so the ionic dynamics of soil solutions are controlled by labile anions. According to the research, in the soil with low pH, the concentration of A1 ~ (3+) in the soil solution also increased as the anion concentration of the soil solution increased. Slope and soil depth is different from the amount of soil exchangeable cations, soil solution ion dynamics also will change. As a result, NH4Cl was applied to Cryptomeria fortunei and Phyllostachys monocytogenes to increase the concentration of NO3- and Cl- in the soil solution. Based on this study, the amount of exchangeable cation in soil and the cation in soil solution