1:Maolan Karst Forest
Reserve; 2:Baiyanjiao bush area;
3:Man-made woodland,Hongfenghu; 4:Herlsceous region,
Hongfenghu;5:Stony mountains region,Fenjinazhai,Puding
Country;6:Stony mountainous region (upper cave system),
Liangsuntun, Anshun sites 1,5, limestone areas;sites 2,3,
4,6,dolomite areas
Fig 2: Relationship between
soil CO2 concentration and HCO3- concentration in
epikarst springs under different ecologic environment.