Studies on the spatial distribution of the content of potassium in hilly tea plantation soils with small sampling scales
2006
Wang Yongdong | Li Tingxuan | Zhang Xizhou
中国人. 运用地统计学和GIS技术相结合的方法，采用地统计分析模块中的Krlging插值法研究了山区茶园土壤钾素的空间分布格局。结果表明：蒙顶山茶园土壤全钾和速效钾含量均具有中等的空间相关性，其C0／（C0＋C）值分别为43．3％和27．2％，二者的变异方向略有不同，但均表现出在坡度方向变异明显，在横坡方向变异较弱的特性。Kriging插值结果表明速效钾含量在24．48-55．00mg/kg之间的斑块面积较大，全钾在12．09～14．04g/kg之间所占的面积较大，二者均呈片状分布，在垂直方向没有明显的规律可循，并都有东北区含量高于西南区的趋势。
显示更多 [+] 显示较少 [-]英语. Kriging was used for analysing the spatial variability of K in hilly tea plantation soil by employing geostatistical methods and GIS technique. The results show that Total K and Available K are moderately spatially dependent in Mengding mountain. The rate of nugget to sill is 43.3% and 27.2 %, and has obvious variance in the aspect of the gradient, but weaker at the aclinic aspect of the slope, though a little different in other aspects. Kriging analysis shows that in the contents of 24.48 mg/kg to 55.00 mg/kg, Available K has the biggest patches areas, and similar in the contents of 12.09 g/kg to 14.04 g/kg of Total K. Both of their contents distribute into sheet, and are higher in northeast than in southwest. But there are no rules in the vertical aspect.
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