Spatial heterogeneity of total carbon content

available nitrogen

phosphorus and potassium content in thin layer black soil of Shuangcheng city

Heilongjiang province was analyzed by geostatistics method. The results showed all of them had heterogeneity. Soil total carbon content was significantly impacted by spatial distance

the depth of black soil layer affected its spatial distribution. There was a relative low spatial heterogeneity of available nitrogen

phosphorus and potassium content

more than 80 percent of them was affected by stochastic factors. The range of total carbon content

available nitrogen

phosphorus and potassium content was 15.7 km

4.6 km

11.2 km

7.1 km

respectively. There were significant correlation between total C and available N.