| 摘要: |
| 针对用林分多样性指标难以对林分抗虫能力作出评价的问题，论述了应用多样性测度阈值和林分虫害强度确定混交林混交率，并根据特定林分的混交率判定其对特定害虫抗性强弱的原理，并阐述了应用多样性阈值评判林分抗虫性的可行性及其影响因素。 |
| 关键词: 生物多样性 林分抗虫性 评判原理 |
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| 基金项目:国家教育部科学技术研究重点项目(03159)；国家林业局黄土高原林木培育开放实验室基金项目(K02-10) |
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| The judgment of resistance forestry for pest by biodiversity index |
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| Abstract: |
| Considering that it is difficut to judge the insect-resistant capacity of forest by the biodiversity index of forest,the paper discussed how to ascertain the mixed rate of forest by DTV (insect community diversity threshold value) and Sph (Strength of pest harm).Moreover,how to judge the resistance to insect pests of forest according to the mixed rate of forest is clearly explained.Meanwhile,the feasibility and influencing factor of applying DTV technique to judge resistance insect pest of forest are elaborated. |
| Key words: biological diversity resistance to insect pest of forest judgment fundamentals of resistance forest |
