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以克里雅绿洲盐渍化土壤为研究对象,以野外调查与实地数据为基础,采用空间自相关分析与径向基函数插值法,定量分析了克里雅绿洲土壤的含盐量、pH及盐基离子的空间异质特征。结果表明:绿洲盐渍土表聚性强、呈碱性,土壤含盐量从南至北呈现逐渐增大趋势。土壤含盐量、Na~+、Ca(2+)、K~+、Mg2~+、Cl–、SO_4~(2-)均属于强空间变异,HCO_3~–属于中等强度的空间变异,而pH属极弱变异。土壤盐分含量、pH和盐基离子的Moran’s I指数均通过了显著性检验,研究区土壤含盐量、p H与盐基离子在空间上呈现低聚集性。Pearson相关性分析结果显示,土壤盐分含量与Na~+、K~+、Cl~–和SO_4~(2-)含量具有强正相关性(P<0.01),与Ca~(2+)和Mg~(2+)含量中等程度正相关(P<0.05);土壤pH与土壤含盐量及盐基离子含量极弱相关。该研究结果可为绿洲水资源合理开发与农业可持续发展提供科学依据,同时可作为盐渍土改良和沙漠化防治等环保工作的决策支撑。
Based on the field investigation and field data, the paper studies the salinization of oak in Keya’er Oasis by using the spatial autocorrelation analysis and the radial basis function interpolation method, and quantitatively analyzes the salt content, pH, Spatial Heterogeneity of Base Ions. The results show that the oasis saline soil has strong cohesion and is alkaline, and the soil salinity increases gradually from south to north. Soil salt content, Na ~ +, Ca (2 +), K ~ +, Mg2 ~ +, Cl-, SO4 ~ (2-) belong to strong spatial variability, and HCO3 ~ - belongs to medium intensity spatial variability. Is a very weak mutation. Soil salinity content, pH and Moran’s I index of salt-based ions all passed the significance test. Soil salinity was found in the study area, and pH and salt-base ions were spatially low-aggregated. Pearson correlation analysis showed that there was a strong positive correlation between soil salt content and Na ~ +, K ~ +, Cl ~ - and SO_4 ~ (2-) contents (P <0.01) ~ (2+) content was moderately positive correlation (P <0.05); soil pH and soil salt content and salt content is extremely weak. The results of this study can provide a scientific basis for rational development of oasis water resources and sustainable development of agriculture, and can also serve as decision support for environmental protection such as saline soil improvement and desertification control.