关键词: 径向基函数神经网络模型, 普通克里格法, 回归克里格法, 土壤养分

Abstract: new approach of estimating the national wealth proposed by the World Bank staff was introduced in the paper. According to the new approach, national wealth comprises produced assets, natural capital and human resources and each of these three categories is measured with monetary valuation. The percentage of three categories in total wealth was shown globally, and the difference of national wealth between developed countries and developing countries was also listed.

Key words: radial basis function neural network model, ordinary kriging, regression kriging, soil nutrient.