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The principles and procedures for extracting the watershed characteristics using the Shuttle Radar Togograhy Mission (SRTM) Digital Elevation Model (DEM) data in ArcGIS9.3 was introduced in this paper, and its application in the Source Area of Yellow River (SAYR) was used as a case analysis. Much emphasis was put on the details of watershed generation, such as filling the depression of SRTM DEM data,...
The global warming is word actuality and puzzle. The prediction on the changes of southern limit of permafrost in Northeastern China was achieved by combining of equivalent-latitude and finite element models. The mean annual soil surface temperature (MASST) has a close linear correlation with the MAAT, if the air temperature increment assumed to be 0.048degC/a for the studied period during the next...
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