Method for improving carbon sequestration capacity of urban parks and greenbelts by utilizing biomass charcoal

The invention discloses a method for improving the carbon sequestration capacity of urban parks and greenbelts by using biomass charcoal. According to the method, the biomass charcoal is prepared at the optimum temperature, and the biomass charcoal is mixed with organic and inorganic raw materials to prepare the carbon-based fertilizer, so that the carbon sequestration capacity of the park green land plant soil is improved. The method comprises the following steps: step 1, preparing the garden waste biomass charcoal-based fertilizer; and step 2, fertilization. The first step comprises preparation of biomass charcoal and preparation of a base fertilizer. According to the method, the preparation temperature with the highest yield is designed through an orthogonal experiment by selecting garden waste, the biomass charcoal base fertilizer is applied to soil, the biomass charcoal prepared at the low temperature can retain more organic matters, so that the carbon sequestration capacity of urban green land soil is i