Changes and Protection of Ancient and Valuable Tree Resources in Qingtian County

Field investigation was carried out from November, 2017 to January, 2018 on ancient and valuable trees in Qingtian county, Zhejiang province.The result demonstrated that there were 9150 trees, belonging to 107 species of34 families and 68 genera, while 6703 trees belonging to 85 species of 33 families and 63 genera in 2002.1841 trees were not found in 2002, and there were problems in 2002 such as wrong species, uncorrect DBH and longitude and latitude, etc.The result showed that 819 listed trees were dead from 2002 to 2017, mainly caused by pest and insect and natural disaster.Suggestions for better protection and management of ancient and valuable trees were offered.