气候变暖与林木害虫的适应性变化  

Global Warming and Adaptive Changes of Forest Pests

作　　者：王培新[1] 杜薇薇[1] 李孟楼[1] 

机构地区：[1]西北农林科技大学林学院,陕西杨陵712100

出　　处：《西北林学院学报》2011年第3期124-128,共5页Journal of Northwest Forestry University

基　　金：国家林业局重点项目"气候变化对林业生物灾害影响及适应对策研究"(14210340)

摘　　要：通过对我国6个增温区的气温变化分析表明,气温变暖对我国林木害虫的发生、分布、危害有明显影响。气候变暖增加了林木害虫的年可利用积温,导致部分害虫的年发育代数增多;适宜害虫栖息的地理范围扩大,导致其分布区扩大;年均气温的增高,导致部分害虫春季出蛰期提前、秋季推迟越冬,进而使成虫提早出现,发生期延长,种群数量增加,危害加重。The temperature changes of six zones in China showed that atmospheric warming significantly affected the occurrence, distribution and damage of forest pests. Climate warming increases the annual accumulated temperature available for forest pests, leading to the increase of generations in some pests. It also expands the suitable temperature region for pests, resulting in the expansion of distribution area. The in- crease of average annual temperature leads to the advance of post-hibernant in Spring and overwintering and the delay in Autumn, then enables adults to emerge earlier, extends occurrence period, increases population, and aggravates damage.

关 键 词：气候 变暖 林木害虫 适应性变化 

分 类 号：Q968.1[生物学—昆虫学]