摘要
在过去 10 0年间 ,全球平均气温上升 0 .3～ 0 .5℃ ,这种增温幅度与温室效应的预报结果相一致 ,也与气候变化的自然幅度相一致。由于温室气体效应 ,现代的气候变化与过去气候变化已有本质不同。经过进一步研究 ,多数科学家认为 :全球变暖主要是大气中的温室气体增加造成的。温室效应变化具有重要的地理意义 ,增温幅度存在普遍适应的规律 :冬季大于夏季 ,高纬度大于低纬度 ,陆地大于海洋。植物种群的更新及迁移可能跟不上气候变化的步伐 ,土壤的形成更将远远落后于气候变化 ,过渡带的生态系统将长时期内存在 ,它们将是不稳定的、脆弱的 ,物种的灭绝速度可能会因此加快。
In the past 100 years, the average global temperature increase 0.3～0.5℃. It is consistent with the forecasting result of greenhouse effect and the order of nature of climate change. Because of greenhouse effect, modern climate change differs with that of past in essence. Greenhouse effect is important in geography. The increasing range of the climate has geographical rules at large: it is in winter larger than that in summer, high latitude larger than low latitude, land larger than ocean. The update and migration of plant population is not likely to keep up with the climate change. The form of soil lag greatly behind the climatechange, the transitive ecosystem that is unstable and weak will exist in a long time, so the extinction of species maybe quicken. To human being, the utilization of biology resource will be faced with new problem and challenge. Under the greenhouse effect, rainfall in china will vary withlocation, in the same time the vegetationcoverage and cropwill be influenced too.
出处
《世界地质》
CAS
CSCD
2002年第3期278-282,共5页
World Geology
基金
中国科学院科技创新项目 (KZCX2 - 30 8)
