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China’s Urban Tree Cover Surges Unevenly in Decade
- Urban trees are increasingly recognized for their vital ecosystem services in cities, but monitoring tree cover on a large scale is challenging due to evolving urban landscapes and data limitations.
- A study using nanosatellite imagery provides insights into the extent and dynamics of urban tree cover across major Chinese cities, revealing significant but uneven expansion over a decade.
- China has actively promoted urban greening initiatives through policies like large-scale planting campaigns and green infrastructure investments, leading to an average urban tree cover of 11.47% in studied cities by 2019.
- 76% of cities experienced an increase in tree cover from 2010 to 2019, with mega-cities like Shanghai and Beijing demonstrating notable growth exceeding the national average.
- Disparities in tree cover growth were observed across different urban land use types, with public service areas and residential neighborhoods showing significant gains compared to commercial and industrial districts.
- The use of nanosatellite technology allowed for detailed mapping of urban tree cover, highlighting the role of vegetation in mitigating urban challenges and promoting human well-being.
- While the study reflects positive trends in urban greening, it also emphasizes the need for tailored policies to address inequalities, ensure tree survival amidst urban pressures, and adapt to climate change.
- The findings underscore the importance of long-term monitoring of urban tree dynamics and the potential of innovative technologies to inform data-driven policy interventions and urban planning strategies.
- As urbanization continues globally, enhancing urban green infrastructure will be crucial for building sustainable and equitable cities, with remote sensing data playing a key role in these efforts.
- This research sets a foundation for optimizing urban forestry strategies and emphasizes the significance of integrating technology, policy, and public engagement in fostering green and resilient urban environments.
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