Effects of meteorological factors on the defoliation dynamics of the larch caterpillar(Dendrolimus superans Butler)in the Great Xing’an boreal forests

作     者：Lei Fang Yue Yu Guofei Fang Xu Zhang Zhijun Yu Xudong Zhang Ellen Crocker Jian Yang Lei Fang;Yue Yu;Guofei Fang;Xu Zhang;Zhijun Yu;Xudong Zhang;Ellen Crocker;Jian Yang

作者机构：CAS Key Laboratory of Forest Ecology and ManagementInstitute of Applied EcologyChinese Academy of SciencesShenyang 110016LiaoningPeople’s Republic of China Key Laboratory of State Forestry and Grassland Administration On Forest Pest Monitoring and WarningGeneral Station of Forest and Grassland Pest ManagementNational Forestry and Grassland AdministrationShenyang 110034LiaoningPeople’s Republic of China Department of Forestry and Natural ResourcesUniversity of KentuckyLexingtonKY 40546USA 

出 版 物：《Journal of Forestry Research》 (林业研究（英文版）)

年 卷 期：2021年第32卷第6期

页      面：2683-2697页

核心收录：

学科分类：0830[工学-环境科学与工程（可授工学、理学、农学学位）] 0907[农学-林学] 0829[工学-林业工程] 09[农学] 0904[农学-植物保护] 0901[农学-作物学] 

基　　金：The work was supported by the National Key R&D Program of China(2017YFA0604403) 

主　　题：Larch caterpillar Defoliation area Climatic warming Life cycle Great xing’an mountains Relative importance 

摘      要：Larch caterpillars are widely distributed in the Great Xing’an boreal forests;however,the relationship between caterpillar defoliation dynamics and climatic factors is poorly *** aims of this study are to investigate the primary weather conditions that might influence forest defoliation and to identify the most important life stage of the larch caterpillar at which forest defoliation might be mitigated by incorporating more inhibitory influences from climatic *** life cycle of the larch caterpillar was partitioned into four stages and multiple linear regression and mixed effect models were combined with a relative weight analysis approach to evaluate the importance and influence of meteorological variables on defoliation *** results show that warmer temperatures in growing seasons and overwintering periods can increase the defoliation area,while rainy and humid growing seasons decrease the defoliation *** precipitation during the early instar larval period had the greatest power to explain the variance in defoliation dynamics and had a very strong inhibitory effect,followed by the accumulative temperatures of the late instar larval period which had a positive impact,and precipitation during the middle instar larval period which had a negative *** conditions during the early instar larval period had the greatest influence on the area defoliated and accounted for 40%of the explained *** study demonstrates that climatic warming and drying will increase the risk of larch caterpillar outbreaks in the Great Xing’an Mountains.