摘要
本文总结了2000~2014年贵州省气候变化和森林病虫害发生的有关资料,分析了气候变化与贵州省森林病虫害发生的相关关系。结果表明:气候变化对森林病虫害有着显著的影响。全省森林病虫害发生面积随着年平均气温的升高呈增加趋势。从2000~2014年全省年平均气温从14.7℃升高到15.2℃,森林病虫害发生面积也相应增加,从5.17万hm^2增到22.84万hm^2,相关系数为0.337。冬季(12~2月)温度与森林病虫害面积相关系数为0.308,呈正相关,2009年森林病虫害面积28.97万hm^2(冬季平均气温7.6℃)比2000年的5.17万hm^2(冬季平均气温5.6℃)增加了5.6倍。贵州森林病虫害虫发生面积与年降雨量呈反比,相关系数为-0.515,呈显著负相关。2011年的27.18万hm^2(年降雨量861.9mm)比2000年森林病虫害面积5.17万hm^2(年均降雨量1344.9mm)增加了4.26倍。
The relationship between climate change and forest pests and diseases was summarized from 2000 to2014 in Guizhou Province.The results showed that the climate change has a significant impact on the forest pests and diseases.The area of forest pests and diseases in the province showed an increasing trend with the increase of annual average temperature.From 2000 to 2014,annual average temperature was from 14.7℃ to 15.2℃,forest pests and diseases occurrence area was from 52,700 hectares to 228,400 hectares,which showed the same variation to annual average temperature,and the correlation coefficient was 0.337.The correlation coefficient between winter temperature(12 ~ 2 months) and forest pests and diseases area was 0.308,which was positively correlated.In 2009,forest pests and diseases occurrence area was289,700 hectares(annual average winter temperature was7.6℃).In 2000,forest pest and diseases occurrence area was 51,700 hectares(annual average winter temperature 5.6℃).The forest pest and diseases occurrence area increased 5.6 times in 2009 than that in 2000.The cor-relation coefficient of annual rainfall and forest pest and diseases occurrence area was-0.515,which was a significant negative correlation.In 2011,forest pests and diseases occurrence area was 271,800 hectares(annual rainfall861.9 mm).In 2000,forest pest and diseases occurrence area was 51,700 hectares(annual rainfall 1344.9 mm).The forest pests and diseases occurrence area increased 4.26 times in 2011 than that in 2000.
出处
《贵州林业科技》
2017年第4期44-47,共4页
Guizhou Forestry Science and Technology
基金
贵州省科技厅(黔科合J字[2014]2110号)
贵州省人才创新团队项目(黔科合人才团队[2014]4004号)
黔科合院士站(2014)4006
贵州省天然林资源保护工程效益监测与评价研究(No.2007-02)
关键词
气候变化
森林病虫害
影响
climate change
forest pests and diseases
influence
