Impacts of Precipitation Changes and Human Activities on Annual Runoff of Chao River Basin During Past 45 years;

A Research on Distributed Time Variant Gain Model: a Case Study on Chaohe River Basin;

Study on Mesh Scale of TOPMODEL for Chaohe River Basin;

The Chaohe River basin,which accounts for 31% of the area of upper Miyun Reservoir catchment,was selected as the study area.

Result shows that winter Japan current SSTA owns the whole consistent spatial variation characteristic and obvious change tendency,there is good relevance between winter Japan current region SST and winter temperature in China,if Ja.

Water level correction in the processing of water-depth survey data in the tide-sensitive water area;