森林是陆地生态系统中最主要的固碳者。但森林常受到各种干扰,使其固碳能力下降,甚至变成碳源。文中主要介绍了叶部害虫、干部害虫和根部害虫干扰对森林碳汇的影响及其机理方面的研究进展。森林昆虫种类繁多,危害方式及机理也各不相同。叶部害虫通过食叶或吸取汁液破坏叶绿素直接影响光合作用。研究表明,与光合作用相关基因的表达下调或上调,光合作用减弱或增强,目前尚无一致的结论。在林分水平上,失叶通常导致碳贮量下降。小蠹虫等蛀干害虫危害致树木死亡,将森林由碳库变成碳源。根部害虫不但使根生物量下降,还会影响植物光合作用,但机理尚不清楚。害虫暴发后改变了土壤理化性质,但在一定时间范围内对土壤呼吸并无显著影响,其机理尚待揭示。 Forests are the most important carbon sealers in terrestrial ecosystems. However, forests are often subjected to various kinds of disturbance, reducing their ability to sequester carbon and even becoming carbon sources. The article mainly introduces the research progress on the influence of leaf pests, cadre pests and root pests on the forest carbon sinks and its mechanism. A wide range of forest insects, hazards and mechanisms are also different. Leaf pests directly affect photosynthesis by eating leaves or pumping juice to destroy chlorophyll. Studies have shown that there is no consistent conclusion about the down-regulation or up-regulation of photosynthesis-related genes and the decrease or enhancement of photosynthesis. At the stand level, leaf loss usually leads to a decrease in carbon stocks. Bark beetles and other stem borer damage caused by the death of trees, the forest from a carbon pool into a carbon source. Root pests not only reduce the root biomass, but also affect plant photosynthesis, but the mechanism is not clear. After the outbreak of pests changed the physical and chemical properties of the soil, but did not significantly affect soil respiration in a certain period of time, the mechanism remains to be revealed.