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选择艾比湖湿地的博尔塔拉河、精河下游河岸带为研究区域,针对土壤中的碱解氮进行定量测定,采用描述性统计法、地统计学方法和空间分析法,讨论研究区土壤碱解氮的空间变异及分布特征。结果表明:在0~20、20~40和60~80 cm土层碱解氮含量的块金值与基台值之比分别为47.60%、49.98%和58.21%,具有中等的空间相关性。在40~60 cm和80~100 cm土层块金值与基台值之比分别为3.64%和22.69%,具有较强的空间相关性。研究区0~100 cm各层土壤碱解氮含量平均值分别为49.16、37.26、30.22、20.35和17.80 mg/kg,经统计分析15~20 mg/kg的样本频数最多,表明研究区碱解氮含量整体偏低,属于极缺乏性。土壤碱解氮垂直分异规律为:随土层深度的增加而递减;碱解氮含量水平分异规律为:博河区域>精河及精河东部区域>博、精河间的中部区域。
The Bortala River in the Aibi Lake wetland and the riparian zone in the lower stream of Jinghe River were chosen as the study area, and the quantitative determination of soil available nitrogen was carried out. Descriptive statistics, geostatistical methods and spatial analysis were used to discuss the relationship between the study area Spatial Variability and Distribution of Soil Available Nitrogen in Soil. The results showed that the ratio of the nugget value to the abutment value of 0 ~ 20, 20 ~ 40 and 60 ~ 80 cm soil layers were 47.60%, 49.98% and 58.21% respectively, with moderate spatial correlation. The ratios of gold value to abutment value in the soil layers of 40-60 cm and 80-100 cm were 3.64% and 22.69%, respectively, which had strong spatial correlation. The average contents of soil available nitrogen in the 0 ~ 100 cm layer in the study area were 49.16, 37.26, 30.22, 20.35 and 17.80 mg / kg, respectively. The statistical analysis showed that the highest frequency of 15 ~ 20 mg / Low overall content, is extremely lacking. The vertical variation law of soil available nitrogen decreased with the increase of soil depth. The normalized nitrogen levels varied from the Bo River area to the middle area of Jinghe River and Jinghe River to Bo River and Jinghe River.