Study on Soil Special Variability and Crops Optimal Layout Based on Gis in The West-Northern Plateau of Hebei Province

A geo-statistics method combined with GIS was applied to study the soil special variation characteristics of a typical basin on the Northwestern Plateau of Hebei Province. It indicates that the rational crop layout is determined by the soil texture. And the crop layout optimization schemes were put forward for different production objectives based on the GIS platform with the soilcrops special co-adaptation. The results showed that basin altitude was the primary cause for the special variation of soil texture and nutrient content. The crop layout optimization schemes showed that the economic efficiency was increased by 26.9%~48.5% in large-scale of crop production, while the economic efficiency was increased by only 8.0%~8.5% with ecological construction of de-farming. It was concluded that the agricultural production progress should mostly rely on the renovation of farming organization system and the scale of economy should be the primary impetus for agricultural development in the Northwestern Plateau of Hebei Province.