Remote sensing assessment and prediction of forest vegetation carbon sequestration in the Beijing-Tianjin-Hebei urban area
Urban afforestation has been a significant artificial forestation approach in China.In theory,it serves as a crucial sink for urban carbon emissions,but it remains challenging to quantitatively assess the current status and potential of carbon sequestration of urban forest vegetation.This study,based on the biomass-age relationship in forest succession theory(FCS model),used 30-m high-resolution remote sensing imagery data and integrated IPCC climate scenario data to assess and predict the current status and potential of carbon sequestration in newly added forest vegetation in the Beijing-Tianjin-Hebei urban area from 1985 to 2020.The research findings indicate that the total carbon sequestration in newly added forest vegetation in the area from 1985 to 2020 is approximately 14.28 x 104 t,with Beijing urban area having the highest carbon sequestration amount of about 10.34 × 104 t,possibly due to the largest growth rate of urban forest area in Beijing.By 2060,the potential carbon sequestration of this newly added forest vegetation is expected to be close to 39.72 × 104 t,with Beijing urban area still having the highest potential of around 25.93 × 104 t.From the perspective of city or district-level administrative units,in the period from 1985 to 2020,the district with the highest carbon sequestration in newly added forest vegetation in Beijing urban area was Shijingshan District,while in Tianjin urban area it was Jizhou District,and in Hebei urban area it was Chengde City.However,carbon sequestration potential differs,with Shunyi District becoming the area with the highest potential in Beijing urban area,Jizhou District remaining the highest in Tianjin urban area,and Langfang City becoming the highest in Hebei urban area.It is evident that there are significant differences in historical carbon sequestration and future carbon sink potential among different urban areas,which also suggests that future management of urban forest carbon sinks needs to integrate the current status and potential of carbon sinks comprehensively.This study innovatively proposed an accurate assessment method for quantifying urban forest carbon sinks,and its research findings provide important references for the scientific management and optimization strategies of urban forest carbon sinks.
urban areacarbon sinkcarbon sequestrationFCS modelforest vegetationBeijing-Tianjin-Hebei region
万方数据
维普
