土壤与全球环境变化

本文着重论述了“土壤变化”与“全球气候变化”之间的相互作用。土壤圈通过其内部一系列的理化、生化变化及土地利用变化等,产生CO_2、CH_4、N_2O等“温室效应”气体特别是CH_4和N_2O向大气的排放,对“全球气候变化”产生重要的影响,而全球气候变暖又会引起土壤沙漠化、酸化、盐渍化等退化过程的进一步加剧,严重改变人类生存的环境。加强科学宣传,提高全球民众环境意识,加强科学研究与监测,提出相应措施,是适应或改变上述全球变化的重要战略对策。

SOIL AND THE GLOBAL ENVIRONMENTAL CHANGES

The interaction of soil changes and climate changes at the global level is emphatically discussed in the paper. Some greenhouse gases, such as carbon dioxide, methane and nitrous oxide, especially the methane and nitrous oxide caused by soil physical, chemical and biochemical changes and land use changes, release to the atmosphere from the pedosphere. It exerts a significant effect on the global climate changes. Meanwhile, the global warming may lead to a more serious soil degradation that includes soil desertification, acidification and salinization. Strengthening science propaganda to improve the environmental consciousness of people and reinforcing scientific research and monitoring to put forward some appropriate measures are important strategies for fitting or changing the global changes as stated above.