摘要
文章总结了 4 0多a来我国气温和森林病虫害发生的有关资料 ,分析了气温变化对我国森林病虫害的发生危害等诸多方面所造成的影响。结果表明 :全国气候变暖 ,使我国森林植被和森林病虫害分布区系向北扩大 ,森林病虫害发生期提前 ,世代数增加 ,发生周期缩短 ,发生范围和危害程度加大。年平均温度 ,尤其是冬季温度的上升促进了森林病虫害的大发生 。
Based on the thorough investigation,the relationship between temperature change and forest pests in China was studied.The conclusions indicated that forest vegetations and pests moved north with the warmer weather.The occurrences of pests went beforehand.The generations,occurring area and damage increased,but the cycle of occurrence shortened.
出处
《中国森林病虫》
北大核心
2003年第3期29-32,共4页
Forest Pest and Disease
关键词
气温变化
森林病虫害
影响
temperature change
forest pest
impact
