`11` انتشار الأراضي المزروعة، وانسداد لبنات الصرف وسحب المياه من سواق الري بجذور الأشجار المزروعة في أحزمة الحماية.
Vegetation: Possible non-regeneration of high forest; Possible extinction or depletion of whole species; Genetic erosion as a result of selective cutting of superior trees; Undesirable secondary forest growth; Influx of persistent weeds; Possible mechanical damage and “isolation shock” killing seed trees; Possible damage to adjacent and cut forest by machinery, wind throw, fires, illegal felling, sedimentation, hydrologic changes and intensified shifting cultivation; Possible effects on regeneration by changes in the populations of animals that act as pollinators or seed vectors.