A European Union strategy to boost forest protection has turned a simmering scientific debate into a full-blown firestorm, pitting one of the bloc’s oldest industries against a perceived power grab by technology-driven regulators. More than two-fifths of Europe is covered by woodlands, which play a pivotal role in capturing and storing greenhouse gases that would otherwise compound climate change when they amass in the atmosphere. Trees are also the foundation of a 640 billion-euro ($760 billion) industry that employs millions of workers who harvest timber for building material and energy.