Carbon balance in pastoral complex based on EOD model

Abstract:

China is continuously promoting the transformation of rural green economy and rural revitalization strategy， and various ecology-oriented agricultural development models such as the pastoral complexes are new ways of rural revitalization construction， driving the transformation of traditional agriculture to modern agriculture development while driving the carbon sequestration and emission reduction in agriculture. Taking the EOD （Ecology oriented development） model of the pastoral complex in Fengjing Township， Jinshan District， Shanghai as the research object， based on on-site research and data statistics， the carbon input and output in the park， as well as the flow and storage of carbon among various areas in the garden， were analyzed； meanwhile， based on the carbon source and sink inventories and at the same time， the carbon balance characteristics of each zone in the pastoral complex were analyzed based on the carbon source and sink inventories and estimation results. The results show that the carbon balance of the pastoral complex in Jinshan District， Shanghai in 2021 is a net carbon sink area， with a net carbon sink of 152.09 tC， including emissions of 588.79 tC and carbon fixation of 740.88 tC. Within the pastoral complex， the crop cultivation area is the largest net carbon sink area through low-carbon organic cultivation mode， with a net carbon sink of 185.76 tC. The aquaculture area has a net carbon sink of 62.20 tC through the efficient multi-stage water and grass recycling model； the stereoscopic agriculture area with a high spatial utilization rate is the carbon source area with a net carbon sink of -10.81 tC due to the significant carbon emission from agricultural fertilizers； the production and living area is the largest carbon source area with a net carbon sink of -85.05 tC， and human cultural and tourism activities are the largest carbon emission source. The analysis combines the carbon flow of this pastoral complex. It proposes four directions of agricultural carbon reduction and sink increase by developing high material recycling rate， high spatial utilization rate， low carbon organic planting mode， and agricultural science management.