Part of this surface is naturally regenerated by seeds and/or vegetative regeneration. Legislative violations seem to be the major cause of illegal wood harvesting in Romania, for example, fraudulent permit use, registration of high-quality wood as low-quality timber to avoid taxes, false records on real harvested volumes, evasion of controls and logging in PAs. As reported by NEG, there are problems with illegal economic activities (such as illegal constmctions) underlying illegal logging, as well as a shortage of financial, human and material resources to address illegal logging. Other, more sector-specific reports (on mountain ecosystems, for example) have also been submitted to the CBD.