文献类型：期刊文献

英文题名：Meteorological Drivers and Forest Structural Prevention of the Canker Disease in Betula alnoides-A Case Study in South China

作者：Zhao, Zhi-Gang[1,4] Li, Zhao-Jia[2,5] Qiu, Zhi-Xiong[3] Wang, Chun-Sheng[2] He, Yong-Jia[3] Chen, Qi-Wu[3] Ma, Hai-Bin[2]

第一作者：Zhao, Zhi-Gang

通信作者：Ma, HB[1]

机构：[1]Guangzhou Inst Forestry & Landscape Architecture, Guangzhou 510405, Peoples R China;[2]Chinese Acad Forestry, Res Inst Trop Forestry, Guangzhou 510520, Peoples R China;[3]Shaoguan Natl Forest Pk Management Off, Shaoguan 512023, Peoples R China;[4]Guangzhou Collaborat Innovat Ctr Sci Tech Ecol & L, Guangzhou 510405, Peoples R China;[5]Nanling Mts China, Beijiangyuan Natl Forest Ecosyst Res Stn, Guangzhou 510520, Peoples R China

年份：2025

卷号：16

期号：3

外文期刊名：FORESTS

收录：;EI(收录号：20251318137617);Scopus(收录号：2-s2.0-105001161596);WOS:【SCI-EXPANDED(收录号:WOS:001452312000001)】；

基金：This project was funded by the Science and Technology Projects in Guangzhou (2024B03J1325) and by the Research Budget for Science and Technology of Forestry and Landscaping from the Guangzhou Forestry and Landscaping Bureau (Sui-Cai 2023-1).

语种：英文

外文关键词：climate change; Betula alnoides; disease resistance; stand structure; ecological prevention

摘要：The risk of forest diseases is on the rise due to climate change and the consequential increase in extreme weather events, which disrupt the balance between pathogen, hosts, and the environment. This study analyzed two consecutive outbreaks of canker disease in Betula alnoides (Buch.-Ham. ex D. Don 1825) plantations and the temperature and precipitation changes in 2019 and 2020 in the northern Guangdong Province, China, to understand the impact of meteorological factors on disease outbreaks. We also examined the growth and mortality of B. alnoides with different gap sizes and reserved densities to explore how stand structure affects disease resistance in B. alnoides individuals. In both years, the disease outbreaks were preceded by periods of increasing heat and significant drops in humidity, as indicated by the z-score and relative similarity index. The mortality of B. alnoides due to canker disease was negatively correlated with seedling growth, which was optimized at a moderate reserved density of 225-300 trees per hectare in the upper layer and a gap size of 500-750 m2. The findings suggest that closely monitoring meteorological changes and implementing afforestation with a well-managed upper layer can help mitigate the impact of canker disease in subtropical regions, particularly in the context of climate change. Further long-term studies with a more systemic approach are needed to assess the effects of thinning and gap creation in forest management.