Urban Forestation Projects Mitigate Environmental Issues and Climate Change in China

Research conducted by the Chinese Academy of Sciences used Google Earth Engine and the Carnegie-Ames-Stanford Approach model to evaluate the biomass carbon storage in 40 cities with large-scale forestation projects. The study found that urban forests in tropical zones had the highest biomass carbon storage, with an annual accumulation of 5.84 x 10^7 tC yr^-1, equivalent to 0.58 tC ha^-1 yr^-1. The research suggests that forestation projects can play a crucial role in mitigating urban climate change and improving sustainability.

Key Takeaways:

• Urban forestation projects are being initiated in China to mitigate environmental issues and enhance climate change adaptation.
• The study used Google Earth Engine and Carnegie-Ames-Stanford Approach model to evaluate biomass carbon storage in 40 case cities with large-scale forestation projects.
• The research found that urban forests in tropical zones had the highest biomass carbon storage, with an annual accumulation of 5.84 x 10^7 tC yr^-1.
• Each of the three forestation patterns in the case cities - afforestation, reforestation, and integrated forestation - was oriented based on available local green space and urbanization trends.
• The study introduced refined carbon accumulation parameters based on climate zones and tree crown cover, generating a high-resolution spatial map of annual biomass carbon accumulation.
• The research suggests that forestation projects can play a crucial role in mitigating urban climate change and improving sustainability.
• The study's findings can be used to assess the role of urban forests in the carbon balance and mitigation of urban climate change.
• The research provides guidance for urban planners to prioritize the expansion of forestation areas and tree canopy cover for sustainable urban development.

Statistics:

• Annual biomass carbon accumulation for urban forests (UFs) was 5.84 x 10^7 tC yr^-1.
• Biomass carbon storage in 40 case cities had an average annual accumulation of 0.58 tC ha^-1 yr^-1.
• Forestation projects in tropical zones had the highest biomass carbon storage, with an average annual accumulation of 0.68 tC ha^-1 yr^-1.
• The study used Google Earth Engine and Carnegie-Ames-Stanford Approach model to analyze data from 2010 to 2020.

Sources:

• A Remote Sensing-based Assessment of Biomass Carbon Global Temporal Trends In Urban Forests. Sustainable Production and Consumption, 2025;58:267-276.
• Zhang Fan, Wen Fang, Ying Cai, Yuyao Wang, Yuping Bai, and Qi Feng. Studies from Chinese Academy of Sciences Describe New Findings in Climate Change. Global Warming Focus. September 1, 2025; p 3827.