Preliminary Studies on Diatoms from Gahai Lake,Gansu Province Seed Banks of a Lakeshore Wetland, Gahai Lake Distribution of soil organic carbon storage and carbon density in Gahai Wetland ecosystem. Soil Properties of Meadow Wetlands for Different Altitudes in Gahai of Gannan A preliminary study of carbon dioxide, methane and nitrous oxide fluxes from the Gahai wetland Study on grassland community characteristics and species diversity along altitudinal gradients in the Gahai wetland, Gansu province