摘要
因固碳作用引起地球大气中CO_2含量减少所导致的温室效应减弱是各大冰期形成的根本原因。地球内部在周期性银河扰动引力场引发的构造岩浆活动中,向大气补充的CO_2使大冰期结束。人类活动加强了温室效应且影响深广,应及早采取对策。
Solar radiation is the main factor which affects terrestrial surface temperature. Greenhouse Effect originates from the following process: Moisture and carbon dioxide in atmosphere absorb the long-wave radiation which emits from the surface of land and sea to cbsmic space.
The basic reason why glacial epoch during geological history appeared is that the inorganic carbon fixation, caused by the carbonate precipitates of carbon dioxide and metal ions in hydrosphere, and organic carbon fixation, by the forming of fossil fuel and biogenetic limestone in biosphere, reduced the concentration of carbon dioxide in atmosphere and therefore weakened the greenhouse effect. Because the development of organic carbon fixation sped up, the interval between glacial epoches became shorter and shorter.
Glacial epoch underwent a long-range pregnancy. Quaternary Ice Age was conceived early at the end of Juras-sic Period, and,appeared in the early time of the Tertiary. Therefore, I suggest that the Quaternary Ice Age be called the Cenbzoic Ice Age.
Volcanic dust during the tectonic and igneous activities in the interior of the earth, caused by periodic galactic disturbance of gravitational field, lowered the global temperature in a short time, the long-term and huge accumulation of carbon dioxide from volcanic activities enhanced the greenhouse effect and caused the ending of Ice Age.
The periodic variations of temperature on the terrestrial surface made biosphere evolve by stages. The organic carbon fixation caused by thriving of biosphere speed up the arrival of Ice Age which greatly reduced biosphere. That is called self-control of development in biosphere.
Man's activities have changed the regular state of nature, greatly increased greenhouse effect, and made the environment change tremendously. In order to avoid the retaliation of nature, man should take steps as soon as possible to reduce the consumption of mineral fuel and increase the percentage of forest coverage.
出处
《冰川冻土》
CSCD
北大核心
1991年第1期61-66,共6页
Journal of Glaciology and Geocryology
关键词
固碳作用
地质时代
更新世
carbon dioxide, greenhouse effect, carbon fixation, Ice Age
