CARBON CYCLE OF MARSH IN THE SANJIANG PLAIN

Key words: 
• carbon cycle /
• production of plant /
• soil respiration /
• vertical transport of carbon dioxide

Abstract: The Sanjinag Plain of China is a low plain. Its total area is 10. 89 × 10⁴ km² and marsh area takes up 10. 20%. Marsh is a kind of vegetation type with strong carbon-fixing ability among the terrestrial areystam and carbon cycle performing in the form of carbon dioxide. This paper discusses the fixation of atmospheric CO₂ by marsh plant; the transfer of carbon from marsh to atmosphere; the change of CO₂ and vertical transfer of CO₂ near atmosphere of the earth; the carbon floW among marsh plants, soil and atmosphere. Some scientific data about the biological production, carbon content of marsh plants and the capacity for releasing and fixing are used to explain the carbon cycle of marsh in the Sanjiang Plain.