MANILA — The death toll from the typhoon that tore through the southern Philippines this week rose past 450 on Friday with over 500 still missing, and there were assertions that climate change, deforestation, poor planning and other factors had worsened the catastrophe.

The government’s main disaster agency said Friday afternoon that 456 people were known to have been killed by Typhoon Bopha, with 533 people missing and 445 injured. Local officials estimated that the final death toll would exceeded 500. About 393,000 people were said to be living temporarily in evacuation centers or receiving some other form of government assistance.

Government officials said this week that storm patterns related to climate change had put communities unaccustomed to strong typhoons in Bopha’s path. But they also said the destruction had been exacerbated by deforestation from illegal logging and small-scale mining, as well as poor planning and confusion created by maps supposed of vulnerable areas.

“I requested samples of the geohazard maps and even I couldn’t read them,” Senator Loren Legarda, an outspoken proponent of disaster preparedness programs, said Friday in an interview. “The maps need to be updated and clear, but they are difficult to understand.”