“ While initially welcomed as an opportunity to increase the ecological values of such areas, ” stated the United Nations Environment Programme, “‘ set - aside ’ measures can also have negative results ​ — causing people to abandon traditional farming systems and adopt inappropriate forms of forestry or afforestation. ”
فهو يحمل الناس على هجر اساليب الزراعة التقليدية وعلى اعتماد وسائل خاطئة في استغلال الاحراج او في التشجير » .‏