Effect Of Different Land Use Patterns On Soil Carbon-dioxide Emission In Eastern Himalaya

Abstract

The study was conducted in three prominent land use systems of East Siang district, Arunachal Pradesh to measure soil CO2 released from the soils. Soil respiration rate varied significantly between different seasons as well as annually. Soil respiration rate was consistently the higher in the Forest area (296.54 mg CO2 m-2 h-1), followed by the Paddy AES (291.42 mg CO2 m-2 h-1) when both seasonal and annual means were compared. Soil respiration in all the sites showed strong seasonal patterns with higher value observed in the wet season compared to the dry season in most of the sites. Seasonal variations in the soil respiration rate are mostly influenced by the prevailing climatic conditions such as rainfall and temperature in the different land use patterns in northeastern India.