期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2009
卷号：XXXVIII-8/W3
页码：147
出版社：Copernicus Publications
摘要：Climatic variability, together with increase in atmospheric temperature and carbon dioxide do have lot of implication in agriculture sector. Latest assessment report from the Intergovernmental Panel on Climate Change (IPCC) predicts an increment in mean atmospheric temperature from 1.1 to 6.4°C toward the year 2100 with equally increasing atmospheric carbon dioxide (CO 2 ). Such climatic changes could profoundly affect insects both directly i.e. seasonal shifts of insects and indirectly i.e. changing plant productivity and quality, changing predators increasing insect pests population. A detailed investigation was done by analyzing various studies carried out around the globe on impact of increasing atmospheric temperature and carbon dioxide on crop pests population and crop-pest interaction. Studies reported both harmful and beneficial impacts, however benefits are least reported. A substantial expansion in high latitude and elevation of various crop insect pest distributions and is critical in temperate part of the world. Increased frequent insect outbreaks had been observed where changing climate may interfere with the induction of extended diapauses. Increase in atmospheric temperature resulted in reduction in survival and increase in developmental rate, resulting in more generations (and more crop damage) per year. New studies show that insect species living in warmer areas are more likely to undergo rapid population growth because they have higher metabolic rates and reproduce more frequently, thus climate change would create favorable conditions for growth in insect populations. Other environmental parameters like relative humidity and CO 2 is potentially important, more CO 2 in the atmosphere make plants to take up more carbon and leaves become less nutritious and results in voluminous feeding. Further studies on crop-pest interaction focusing on spatio-temporal variations are needed to have a better understanding and to quantify its future impacts
