Factor analysis method was applied to the evaluation of water quality of Songhuaba water source protection area from 2001 to 2007.

Reseach of Songhuaba water source area population and ecological environment question in Kunming city;

Songhuaba water source area is the Kunming important source of drinking water quality,is the people\'s lives and industry and agriculture production of the main sources of water of Kunming city.

An indirect proof of the main source of nitrate and phosphate pollutant in Songhuaba reservoir;

Non-point source pollution control in water source area of Songhuaba Reservoir;

Songhuaba reservoir is an important drinking water source of Kunming and the first drinking water conservation area in China.

Compared to 82 millions people and nearly 20 000 water conservation areas in Germany, China has 1 200 millions people and only a few hundred water conservation areas.

Especially,the concept and the design method for establishment of the second water source protection area are described,which provide a reference for the water source protection areas of rural drinking water schemes in hilly regions.

Three types of villages in this water source protection area including the ordinary village, eco-tourism village and village where the town government locates were selected to study discharge amount, composition, temporal variation and emission coefficient of rural domestic wastewater by in-door survey and sample analyzing.