sediment of outer area of Lake Dianchi
algae-residue of Dianchi Lake
control of pollution in Lake Dianchi
diverting foreign water to Dianchi Lake
grassland around Lake Dianchi
the outer lakes of Dianchi Lake
treatment of eutrophication of Dianchi Lake
water in the Dianchi Lake
Watershed of Dianchi Lake
3-D seismic exploration in lake area
Around Dongling Lake area