蛀干昆虫的寄主选择及其在森林健康评价中的应用

Host Selection of Xylophagous Insects and Its Application in Forest Health Evaluation

森林健康关系到其生态系统的稳定性。各国森林健康问题的侧重点不同,森林健康评价标准和诊断方法不统一,特别是亚健康森林的早期诊断仍然是亟待解决的科学难题。本文综述了蛀干昆虫对寄主植物选择机制和规律的国内外研究进展及其在森林健康评价中的应用前景,根据蛀干昆虫中次期性种类总是与亚健康和衰弱林木相伴的规律,提出了利用蛀干昆虫早期诊断和评价森林健康的思路,以蛀干昆虫种群数量与林木健康状况的相互关系为主,辅以物种间相互作用关系(群落结构、生物多样性)、环境因子(气候变化、土壤性质)等建立数学模型,定量分析和综合评价森林健康及其发展趋势。

Forest is an important component part of ecosystem and therefore forest health is crucial to the stability of ecosystem. However, different countries has different emphases on and diagnostic methods of forest health are inconsistency, especially forest health, furthermore, evaluation criteria diagnosing sub-healthy forest betimes is still a scientific problem need to be solved urgently. The paper reviewed the host selection mechanisms and rules of xylophagous insects and their application foreground in forest health evaluation. According to the rule that some secondary xylophagous insects always accompany with trees which are sub-healthy or unhealthy, and evaluating forest health betimes using xylophagous insects were posed. Mathematical ideas of diagnosing models would be established based mainly on interactions between quantity of xylophagous insect populations and status of forest health, interspecific interactions （ community structure, biodiversity） and environmental factors （ climatic change, soil property ） were also added as supplementary parameters, in order to quantitatively analyzing and comprehensively evaluating forest health and its developing trend.