The paper provides a brief summary to the principle, policy and measures taken for regulating waterway of Jiamusi-Tongjiang section of Songhuajiang River, which has achieved expected regulation effect and was awarded Quality Prize for water transportation eogineering by the Ministry of Communications.

Ancient study indicates optimal bands combination,texture and vegetation indices can advance classification accuracy in a certain extent.

The main results are as following:1、Based on TM remote sensing image,using the valuation Index of optimal bands .

Analysis and research of environmental capacity of water in the Songhua River Jiamusi;

A method of the best band combination selection based on spectral characteristics of surface features;

the intrinsical relationships of the “entropy”methods on optimal bands selection in multispectral remote sensing data interpretation are analysed,and,limitations of using these methods in hyperspectral remote sensing data interpretation explained.

According to reflective properties of major rocks on the lunar surface to different electromagnetic waves,this article starts with the theory of traditional multispectrum datasets bands selection,and analyses the methods of optimal bands selection adapting to multispectrum datasets of the lunar surface.