| 摘要: |
| 摘要：2008年1月-2月，中国南方遭受了一场罕见的雨雪冰冻灾害，对森林生态造成了严重影响。为了分析雪灾对次生性林业有害生物种群消长的影响，在粤北山区，采用诱捕器诱集法，开展了蛀干害虫的监测试验。结果表明，灾后的第1年，林间有较低虫口密度的蛀干害虫种类，如松褐天牛Monochamus alternatus Hope、马尾松角胫象Shirahoshizo patruelis （Voss）和松瘤象Hyposipalus gigas Fabricius 等。而在雨雪冰冻过后的第2年，松林中的这些典型蛀干害虫的种群数量有了显著的增加，松褐天牛、松瘤象、马尾松角胫象和小蠹虫等主要蛀干害虫的数量显著增加，全部3个典型试验点60套诱捕器全年共诱集小蠹虫18种，数量达108,937头；马尾松角胫象5,599头；松褐天牛367头。从害虫群落多样性的时间动态上来看，全年以6~7月份的物种多样性指数和丰富度指数为最高，特别是在6月，害虫的优势集中性指数最高，该月存在最大的成灾风险。 |
| 关键词: 雨雪 冰冻 蛀干害虫 松褐天牛 |
| DOI： |
| 分类号: |
| 基金项目:广东省农业领域科技攻关计划“粤北森林冰雪灾害评估及灾后复产技术研究与示范”（2008A020100013） |
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| Preliminary Study on the Monitoring of Boring Insects Population after Heavy Snowstorm and Freezing Rain Disasters in the North of Guangdong Province |
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Fan Junxiang
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| Abstract: |
| Abstract：From January to February 2008, southern China suffered an unusual heavy snowstorm and freezing rain over a large area．This catastrophic event brought the area a serious impact on the forest ecology．To understand the long-term impact of this catastrophic event on the secondary forest insects, a monitoring test was done based on baiting method. The results showed that the boring insects including Monochamus alternatus Hope, Shirahoshizo patruelis （Voss）and Hyposipalus gigas Fabricius were all keeping in low population density at the first year after the catastrophic event. Whereas, at the second year, the number of them all increased. 108,937 bark beetles belonging to 18 species, 5,599 S. patruelis and 367 M. alternatus were baited with 60 traps at 3 test point. Both the species diversity index and richness index are highest from June to July at the whole year. The dominant index of boring inscets was the highest in June, so there was the greatest disaster risk in this month. |
| Key words: ice snow,freezing rain, boring insect, Monochamus alternatus Hope |
