Abstract:

Gardenia jasminoides〖WTBZ〗‘prostrata’,〖WTBX〗Hedera nepalensis〖WTBZ〗 var.〖WTBX〗sinensis,Setcreasea purpurea〖WTBZ〗 and 〖WTBX〗Oxalis corymbosa〖WTBZ〗 had been studied for the effect of amelioration methods on function of carbon sink of green space.The results showed that among three kinds of soil amelioration methods such as stone paving,organic fertilizer,and crushed straw,the organic fertilizer applied had the greatest effect on soil organic carbon content and plant growth,which was conductive to the increase of soil and plant carbon storage.In different treatments mineralization law of soil organic carbon preasented the great consistency,which showed the change trend of decreasing from earlier stage to later carbon emission.The treatment 8 with thickness of stone paving for 4cm,amount of organic fertilizer for 20 kg/m2 and amount of crushed straw for 2 kg/m2 had the most carbon emission amount.Consequently,the function of carbon sink of treatment 1 only with amount of crushed straw for 1 kg/m2 was in the lowest level,showing state of carbon loss.Conversely,the amelioration method of treatment 9 with amount of organic fertilizer for 20 kg/m2 and amount of crushed straw for 3 kg/m2 had the most exogenous carbon sink and the best carbon sink function of green space.〖HJ1〗〖HJ〗