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- Title
我国古树资源的生存现状评估及威胁因素分析.
- Authors
董锦熠; 胡军和; 金晨钟; 刘勇波
- Abstract
Old trees are critical components of ecosystems, with important ecological function and high genetic diversity. To strengthen the protection and management of old trees, we analyzed the distribution, survival and protection status of old trees and their threatened factors in China. The results showed there were a total of 10.66 million old trees in China. The Inner Mongolia Autonomous Region and Yunnan Province had more than one million trees, respectively. For 440000 old trees in 102 counties, 94.3% grew normally, 5.5% in a weak or endangered status, and 0.2% had been dead. The main factors threatened to old trees included natural disasters (e.g., elevated temperature, drought, fire), urbanization, land use, pests and diseases, and cutting and stealing. Among those factors, damage from pests and diseases was the most serious, which was found in 83 counties (81.4%). The second important threatened factor was natural disasters, which occurred in 68 regions (66.7%). In addition, most of the old trees (around 89%) grew in remote countryside, lacking of enough protection. Modern technologies should be used to protect old trees, such as using unmanned aerial vehicles to monitor the growth status of old trees, strengthening pest and disease control, and avoiding natural disasters. Establishing a database of old tree resources is important to update and share information timely to avoid stealing and felling old trees.
- Subjects
YUNNAN Sheng (China); INNER Mongolia (China); CHINA; GENETIC variation; TREE felling; DRONE aircraft; PEST control; NATURAL disasters; PREVENTIVE medicine
- Publication
Chinese Journal of Applied Ecology / Yingyong Shengtai Xuebao, 2021, Vol 32, Issue 10, p3707
- ISSN
1001-9332
- Publication type
Article
- DOI
10.13287/j.1001-9332.202110.037