Solar energy expansion in China linked to declining bird diversity

An analysis of data from over 2,300 Chinese counties found that areas with strict solar energy policies experienced declines in bird diversity over the past decade. Even efforts to replant vegetation did not offset the losses, which the authors attribute to habitat disruption. The study suggests siting large solar projects in areas with lower ecological conflict.

The study, published in *Science*, analyzed birdwatching records and solar policy data across more than 2,300 Chinese counties over a decade. Even where replanting was attempted, bird diversity still declined—a phenomenon the authors term “inferior greening,” suggesting replacement vegetation fails to replicate natural habitats. Lead author Huiming Zhang emphasizes the findings place solar expansion alongside established pressures like agricultural intensification and climate change.

Cornell conservation scientist Ken Rosenberg, not involved in the research, cautions that diversity metrics can mask how individual bird populations fare, recommending future studies track population numbers. He also notes this is the first national-level analysis linking solar policy to biodiversity, warning that renewable energy decisions made without ecological oversight risk “trading one crisis for another.”