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《Environmental Science & Technology》 2012-05
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Application and Review on Treatment Methods about Several Kinds of Grid Data

JIANG Xin-jun(Eastern Liaoning University,Dandong 118003,China)  
The methods of integration,trend aspect,multinomial and average value may be used for the treatment of data measured with grid distribution method,with each method with its own characteristics.The method of average value is easy in calculation and each grid has the same weighting,but the precision is not high.In the methods of integration and trend aspect,the centre grids are used many times due to their high contributing proportion for whole region and constituent many triangles,while the edge grids are used few times,which is distinct in physical meaning.The method of integration may be used to calculate total amount,and the method of trend aspect can be used to show area distribution and variation tendency on a graph.Multinomial method can be used to imitate measured value and to calculate trend and deviation value of the data sequence and to analyze the distribution and diversification of contamination.Mathematical models and computing formulas would be selected according to different research purposes and physical meaning of analytic targets when it is used.
【CateGory Index】: X830.3
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