On Conservation and Management of Ancient Trees and Precious Trees in Guangdong;

Study on species diversity of ancient trees in Zhejiang Province;

There were about fourly thousand ancient trees in" San kong " and its chief dorminants are Platyc ladus Orientalis Sabina chinensis Pistacia chinensis Quercus acutissima GinKgo biloba and so on.

For introducing old tree resources of Gansu, 33 families such as Salcaceae, Cupressaceae, Faceae, Ginkgoaceae, Pinaceae, Ulmaceae et al.

The old trees species and the ecological landscape characteristics in Jiaoyuan Old Village of Zhaoqing City have been reported from the angle of old trees protection.

Research on development technology of Geographic Information System for old trees and famous trees;

Old trees are economy resources as well as environment resources and culture resources.

Old trees are alive antiques and living national treasures.

A survey of ancient trees in Zhuji City;

According to the ancient tree resources and occurrence of forest pests in Mentougou region in Beijing and the current invasive situation of some exotic forest pests in China,the site conditions and physiological conditions of the ancient trees and invading trend of some forest pests in Mentougou are studied.

According to this research, there were 890 succeeding ancient trees in Wuhan City zone and they were belong to 30 family, 47 genus and 61 species through inrestigation.

The general situations and protecting countermeasures of aged trees resources in Hunan Province;