The Best Interpolation to Evaluate Soil Nutrient in the Mountainous Farmland -A Case Study of Shuibei Town,Yushui Country,Jiangxi Province
The relationship between soil nutrient content and elevation and slope was evaluated based on the farmland soil nutrient data of 823 sampling sites in Shuibei town, Yushui country,Jiangxi province. The method of co-Kriging was used with elevation and slope considered, and the result of cross-examination were compared with that by inverse distance weight (IDW) and ordinary Kriging. Results revealed that the accuracy of interpolation was obviously improved when elevation and slope were combined. Among the three interpolation methods, co-Kriging was the best one and followed by ordinary Kriging.
国家科技期刊平台
NSTL
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