The volatile compositions of Chinese Pine (Pinus tabulaeformis) are analyzed. The main turpentine volatiles are (R)-(+)-α-pinene, (S)-(-)-β-pinene, (S)-(+)-3-carene (the largest) which occupy more than 97% of the total. There are also myrcene, (+)-limonene, camphene, terpinen and phellandrene. In the experiment of Electroantennograms(EAG), the male of red turpentine beetles are sensitive to (S)-(-)-α-pinene、limonene and (S)-(+)-3-carene; while the female of the red turpentine beetles are sensitive to (S)-(+)-3-carene、limonene、(S)-(-)-α-pinene and myrcene. The female are more sensitive to the volatiles than the male. There is much difference in response of Dendroctonus valens in Chinese pine compared to that in USA in ponderosa pine. The volatile difference of the two pine species and the environment condition may contribute to this change. Further study on the mechanism of the change is needed.
中国森林生物灾害发生频繁,整理与制作相关灾害数据集对森林生物灾害系统监测布局、风险评估及防控决策具有重要的科学意义。本数据集在整合《中国林业统计年鉴》(1998–2017)和《中国林业和草原统计年鉴》(2018–2019)发布的年度森林生物灾害面积数据及森林资源面积数据基础上,构建并计算得到全国及各省区灾害总体及不同类型生物灾害的森林生物灾害发生指数(Forest Pest Outbreak index,FPOI)、灾害发生率(Forest Pest Occurrence Area Rate,FPOAR)两个系列指标集。验证表明,上述两个指标及距平数据集能够较好地反映出不同尺度中国森林生物灾害时空分布及变化特征,可为森林生物灾害格局与趋势分析及影响因素研究、精准地防控决策提供有效数据支撑。
