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A groundbreaking study using AI and satellite imagery has revealed a severe green space crisis in Karachi, putting residents at high risk from climate change and public health threats.
Researchers from Aga Khan University (AKU) and New York University (NYU) found that Karachi’s green space per capita is only 4.17 square meters – less than half of the World Health Organisation’s (WHO) recommended nine square meters.
This deficiency worsens air pollution, intensifies the urban heat island effect, and disproportionately affects lower-income communities.
“Green spaces are crucial for environmental resilience and public health,” said Dr. Zainab Samad, chair of AKU’s Department of Medicine.
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“Trees are crucial in protecting against extreme heat, acting as carbon sinks and helping to manage urban flooding. As temperatures rise and climate challenges intensify, it is essential for urban planning to prioritize green spaces. These spaces offer not only ecological benefits but also add beauty to the environment and provide shelter for both people and wildlife.”
“Our study highlights the potential of AI to revolutionize city planning, enabling faster, more precise, and impactful efforts,” said Rumi Chunara, associate professor and director of the Centre for Health Data Science at NYU.
“By monitoring the distribution of green spaces, we can guide smarter urban development, track changes over time, and create environments where people can thrive alongside nature. Expanding this research across Pakistan could transform urban planning, paving the way for a healthier, more sustainable future.”
The study leveraged AI-driven analysis, improving vegetation detection accuracy by 13.4 percent. Researchers highlighted how this technology can enhance urban planning and guide policymakers in expanding Karachi’s green infrastructure.
Experts urge immediate action, including large-scale tree-planting, urban reforestation, and park revitalization, warning that Karachi’s livability depends on urgent, science-backed decisions.
