基于3S 技术的黄河流域特征值界定.

In order to make better understanding of basic characteristics of river and lake survey situation of the Yellow River basin to the governance of the Yellow River, the target and technical route were introduced in this paper, and statistical analysis was done on the main geographical feature information of river and lake of the Yellow River basin which was extracted by multi-source data method from advanced 3S technology. This geographical feature information include the number and list of lakes and rivers which above standard, the latest watershed area(813 122 km2), length(5 687 km), and esluarine position of the Yellow River, the geographical hydrological eigenvalue of the river and lake and hydrological stations which above standard and so on. The innovation point was that new understanding and definition of the key characteristics of the river and lake were done. On this basis, the new results were compared with the original eigenvalue, and the differences and the reasons were found out. [ABSTRACT FROM AUTHOR]