论文部分内容阅读
干旱地区草甸湿地是容易发生盐分积累的区域,以银川平原草甸湿地为研究对象,采用野外调查和室内试验相结合的方法,旨在找出银川平原草甸湿地盐分的主要组成成分,为湿地恢复提供科学指导。结果表明:土壤全盐、pH与大部分盐分离子都呈显著或极显著正相关或负相关,Na~+、Cl~-与大部分离子之间都呈显著或极显著相关关系。所有盐分离子的主成分分析表明,在0~30cm土壤Na~+、Cl~-、HCO_3~-+CO_3~(2-)是研究区的主要盐分离子,在30~100cm土壤Na~+、Ca_2~+、Cl~-是研究区盐分累积的主要盐分离子。因此,Na~+、Cl~-是银川平原草甸湿地的主要盐分离子,应着重对这2种离子进行消减。
Meadow wetlands in arid areas are prone to salt accumulation. Taking the meadow wetlands of Yinchuan plain as the research object, the field investigation and laboratory experiments are combined to find out the main components of the salt in the meadow wetlands of Yinchuan Plain. Wetland restoration provides scientific guidance. The results showed that there was a significant positive correlation or a negative correlation between total salt and most of the salt ions in soil, and there was a significant or very significant correlation between Na +, Cl ~ - and most ions. The principal component analysis of all the salt ions showed that Na ~ +, Cl ~ -, HCO_3 ~ - + CO_3 ~ (2-) were the main salt ions in 0 ~ 30cm soil layer, ~ +, Cl ~ - is the main salt ion of salt accumulation in the study area. Therefore, Na ~ + and Cl ~ - are the main salt ions in the meadow wetlands of Yinchuan Plain, and these two kinds of ions should be emphasized.