With the acceleration of urbanization, air pollution is getting worse especially during winter, which causes serious threat to people’s health. Large numbers studies showed that green plants had a significant species on retention particulate matters. In view this, this study selected five evergreen explore dust amounts PM 10 , 2.5 1 per unit leaf area and microstructure surface. The results tha...

Air pollution in Beijing-Tianjin-Hebei region has caused widespread concern. In winter, the combustion of fossil fuel produces a very high proportion fine particulate matter air. However, vegetation coverage is relatively low. The dust retention evergreen plants particularly important for improving air quality. this study, five species were selected, and effects leaf stomatal characteristics (s...

Tree damage is one of the destructive behaviors Asiatic black bear (Ursus thibetanus G. (Baron) Cuvier, 1823), and this type causes great economic loss to forest. A survey about Himalayan white pine (Pinus wallichiana (A. B) Jacks, 1836) damages was conducted at Kaghan Valley, District Mansehra, Khyber Pakhtunkhwa, Pakistan. Field surveys were carried out within five major sites including Mansh...