A plan for reducing wildfire risk by reviving ailing forests in Tomales Bay State Park received the unanimous endorsement of the California Coastal Commission last week after being revised to include stronger protections for tribal cultural resources. California State Parks’ 10-year public works plan outlines a framework for managing sections of the 2,400-acre park with a combination of cutting, controlled burning and herbicides. Different parcels of the park would receive different treatments, depending on their distinct ecologies, with much of the work focused near Heart’s Desire and Shell Beaches. The commission was swamped with emails and letters from environmental groups objecting to the plan after it was unveiled last year, and several spoke at Thursday’s hearing, warning that the use of herbicides would destroy the habitat of wildlife in the park, including northern spotted owls. But Bree Hardcastle, a state park environmental scientist, said the park’s bishop pine and oak forests are threatened by disease, pests and drought that have been exacerbated by climate change. For over a century, fires have been suppressed on parklands where Coast Miwok once employed traditional management techniques to sustain forests that require fire to regenerate. “The combination of colonization, the interruption of tribal stewardship, modern fire suppression, the introduction of pathogens like sudden oak death, and climate change stressors like drought and reduced summer fog have adversely impacted the forest conditions in the park,” Ms. Hardcastle said. The commission had scheduled a March hearing on the plan but delayed it so State Parks could continue to consult with the Federated Indians of Graton Rancheria, which has endorsed the framework. Representatives of several environmental groups spoke out against the plan last week, saying it would disrupt sensitive habitat and drive away the animals that depend on it. They called on State Parks to conduct a comprehensive environmental impact report that would outline alternative approaches. “Ten years of heavy machinery, noise, chainsaws, chipping and masticating machines, often operating over 100 decibels, will terrorize and ultimately drive away hundreds, even thousands of animals, many of them permanently,” Fleur Dawes said on behalf of In Defense of Animals. But other environmental organizations, including the Environmental Action Committee of West Marin, endorsed the plan. “We support the public works plan, but we stress the need for robust monitoring, further environmental review and protection of environmentally sensitive areas and endangered species,” said Adrienne Tosaris, a legal and policy intern with the E.A.C. “The threat of wildfire starting in Tomales Bay State Park and spreading to Inverness neighborhoods is particularly concerning.” Katie Rice, a coastal commissioner and Marin County supervisor, said the plan should be implemented with dispatch. “These forests we’re talking about, they are not healthy right now,” she said. “This is really important work.”