Haar Wavelet Decomposition of Main Soil Factors in Liaotungensis Forest in Dongling Mountain Area
东灵山地区辽东栎林主要土壤因子的Haar小波分解

The method of wavelet decomposition can be used to analyse approximations and details of one dimension soil signal. It is an effective tool for soil factors analysis. The study on decomposition of Haar wavelet for three main soil factors in belt transect of Liaotunggensis forest in Dongling Mountain area, Beijing, was done by this method. The research results showed: along hillslope from under to upper, soil moisture decreased obviously step-by-step; pH of soil displayed relative stabilization and changed between 6.5 and 6.6; There were three parts that soil organic content had high value in belt transect. Its trend was complexity. Based on bigger levels, three soil factors got more interferences in the under parts of belt transect then that in the middle and upper parts. On lesser levels, soil moisture had irregular periodical interference and changing pH-values and organic content were quite complex and not regular in evidence. The approximation components of low-frequency indicated overall trend of soil factors in belt transect effectively. The detail components of high-frequency showed disturbed degree of soil factor by the other factors and it display location of singularity in belt transect.