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运用传统统计学和地统计学相结合的方法对艾比湖流域山前人工绿洲—绿洲—荒漠过渡带—湖滨湿地生态系统土壤表层(0~20 cm)盐分、含水量、pH的空间异质性特征进行分析,结果表明:(1)山前人工绿洲属中度盐化土,绿洲—荒漠过渡带和湖滨湿地均属于重度盐化土;艾比湖流域土壤pH和盐分均由山前人工绿洲向湖滨湿地逐渐增大,含水量由山前人工绿洲向湖滨湿地递减;艾比湖流域土壤pH属于弱变异性,盐分和含水量均属于中等变异强度;(2)受结构因素影响,山前人工绿洲土壤pH、绿洲—荒漠过渡带土壤盐分和含水量、湖滨湿地土壤pH和盐分具有较强的空间相关性;受结构因素和随机因素综合影响,山前人工绿洲土壤盐分和含水量以及湖滨湿地土壤含水量具有中等的空间相关性;(3)艾比湖流域土壤pH和盐分呈现斑块状分布,均由山前人工绿洲向绿洲—荒漠过渡带到湖滨湿地依次递增;土壤含水量呈现条带状分布,由山前人工绿洲向绿洲—荒漠过渡带到湖滨湿地依次递减、艾比湖北部向南部逐渐减少;土壤盐分与pH和含水量分别呈现极显著正相关、显著负相关。
Spatial heterogeneity of salinity, water content and pH of soil surface (0 ~ 20 cm) in the antebellum oasis - oasis - desert transitional zone - lakeside wetland ecosystem in the Aibihu Lake Basin was analyzed using a combination of traditional statistics and geostatistics. The results show that: (1) The artificial oases in the piedmont are moderately salinized soil, oasis-desert transitional zone and lakeshore wetland belong to heavily salinized soil. The soil pH and salinity in the Lake Aibi Basin are controlled by piedmont The oasis increased gradually to the lakeshore wetlands and the water content decreased from the prehistoric oases to the lakeshore wetlands. The soil pH in the Lake Aibi watershed belonged to the weak variability, and both the salt and the water contents belonged to the moderate variation; (2) Due to the structural factors, The former artificial oasis soil pH, the oasis - desert transitional zone soil salinity and water content, the lakeshore wetland soil pH and the salinity have a strong spatial correlation. Due to the combined effect of structural factors and random factors, the soil salinity and water content of the artificial oasis and The soil moisture of lakeshore wetland has a moderate spatial correlation. (3) The soil pH and salinity of Lake Aibi have a patchy distribution, which are from the prehistoric artificial oasis to the oasis-desert transitional zone to lake wetlands The soil water content showed a striped distribution, decreasing from the prehistoric artificial oasis to the oasis-desert transitional zone to the lakeshore wetland, while the northern part of the Aibi Lake decreased to the south. The soil salinity and pH and water content showed extremely significant Positive correlation, significant negative correlation.