论文部分内容阅读
以新疆博斯腾湖滨湖绿洲作为研究区,在实地调查和室内实验分析的基础上,采用描述性统计与灰色关联分析的方法,对春季、夏季、秋季表层土壤盐分含量和盐分离子动态变化特征进行分析。研究结果表明:1)表层土壤含盐量季节动态变化表明,春季积盐,夏季脱盐,秋季盐分累积。2)在0~10 cm土壤,HCO3-、Ca2+、Na++K+变异系数在秋季最高,其中,Ca2+具有强变异性,变异系数为110.47%;在10~20 cm土壤,HCO3-、Cl-、SO42-、Ca2+、Na++K+变异系数在秋季最高,其中,HCO3-、Cl-、Ca2+具有强变异性,变异系数分别为128.70%、114.71%、128.80%;在20~30 cm土壤,HCO3-、Cl-、SO42-、Ca2+变异系数在秋季最高,均具有中等变异性。3)Na++K+、SO42-关联度在三个季节中最大,表层土壤盐分特征因子为Na++K+、SO42-。
Based on the field investigation and indoor laboratory analysis, the Bosten Lake Lakeside Oasis in Xinjiang was used as a research area to analyze the characteristics of the dynamic change of soil salinity and salt ions in spring, summer and autumn by using descriptive statistics and gray relational analysis . The results showed as follows: 1) Seasonal dynamic changes of soil salinity showed that salt accumulation in spring, salt desalination in summer and salt accumulation in autumn. 2) The coefficient of variation of HCO3-, Ca2 + and Na ++ K + was the highest in autumn in 0 ~ 10 cm soil layer. Among them, Ca2 + had strong variability with a coefficient of variation of 110.47%. In the soil of 10 ~ 20 cm, HCO3-, Cl- , The coefficient of variation of SO42-, Ca2 + and Na ++ K + was the highest in autumn, among which, HCO3-, Cl- and Ca2 + had strong variability with the variation coefficients of 128.70%, 114.71% and 128.80% The coefficient of variation of HCO3-, Cl-, SO42- and Ca2 + were the highest in the autumn with moderate variability. 3) The correlation degree of Na ++ K +, SO42- is the largest in three seasons, and the characteristic factors of surface soil salinity are Na ++ K +, SO42-.