Spatial Evaluation of Greenhouse Gas Fluxes in a Sasa (Dwarf Bamboo) Invaded Wetland Ecosystem in Central Hokkaido, Japan

To evaluate the effect of vegetation change on greenhouse gas (GHG) budget from a wetland ecosystem, CO2, CH4 and N2O budgets whole area (21.5 ha) Bibai Wetland, where dwarf bamboo (Sasa) or Ilex has invaded into original Sphagnum dominated vegetation, located in Hokkaido, Japan were estimated. The Sphagnum-dominated was changed sink to source CO2 by invasion short-Sasa (50 cm > height), while tall-Sasa < height 150 cm) increased uptake. Annual emission decreased Sasa Ilex. annual slightly only. These GHG correlated with environmental factors related water table depth. distribution estimated satellite image bands, entire considered be for (−113 Mg CO2-eq y−1) uptake occupied 71% budget. due lowering depth currently increases rate carbon accumulation ecosystem about 5 times.