Impacts of Ice-snow Storm on Litter Storage and Hydrological Function of Broad-leaved Forest in Jiufeng Mountains, North Guangdong Province Study on Vegetation at Huangshi’ao Provincial Nature Reserve,Heping County,Guangdong Province,China Mechanical Damages to Woody Plants from a Snow Disaster in Yangdongshan Shierdushui Provincial Nature Reserve Feasibility analysis of the establishment of provincial nature reserve area in Fenghuang mountain,Guangdong Province