DALI, China — Justin Franchi Solondz, an environmental activist from New Jersey who spent years evading charges of ecoterrorism in the United States by hiding out in China, was sentenced to three years in prison by a local court on Friday on charges of manufacturing drugs in this backpacker haven. After serving his time, Mr. Solondz, 30, who is on the F.B.I.’s wanted list, will be deported to the United States, where he faces charges stemming from what the authorities say was his role in an arson rampage that destroyed buildings in three western states as a member of a...