In this study,we selected three woody ecosystems( orchard wetland,orchard and green space),a herb ecosystem( farmland) and a river ecosystem,which were distributed in the Ten-Thousand-Mu Orchard at Haizhu District,Guangzhou,to study their vegetation and soil carbon densities. The result showed that the ecosystem carbon densitis of orchard wetland,orchard,river,farmland and green space ranged from 137.49 to 208 t·hm~(-2),and their soil carbon densities ranged from 98.45 to 196.44 t·hm~(-2),and the carbon den...