大气中CO_2增加引起全球变暖和海平面上升及其对珠江三角洲可能的影响

THE POSSIBLE IMPACT TO THE PEARL RIVER DELTA OF GLOBAL WARMING AND SEA LEVEL RISE BY INCREASE IN CARBON DIOXIDE IN THE ATMOSPHERE

本文是根据国内外大量实测数据,说明全世界大气层中二氧化碳不断增多,出现“温室效应”,使全球变暖,近地面大气层气温变化的情况;从而引起海面水温变化,使海洋上冰块瓦解和融化,引起海平面上升。按世界各国学者研究的结果,近百年全球近地面大气层气温变化总的趋势是上升,北半球比较明显。海平面也有上升的趋势。按近40年中海平面可能上升0.4～1m的预测值,估计了海平面可能对珠江水位、沿海风暴潮潮位及咸潮入侵的影响,进而分析了对珠江三角洲、特别广洲可能产生的危害。作者认为全球变暖和海平面上升当前还是一个不确定性问题,宜加强科学研究和实测。

This paper is a comprehensive study based on laboratory data in thisand other countries to show the concentration of carbon dioxide in the atmosphere ison the rise. Theconsequent'Green House'effect causes global warming in which the increase in temperature of near ground air changes the temperature of sea water and disintegrates and melts icebergs in the ocean, resulting in a rise in sea level. According to the research results of scholars in many countries, the total trend of temperatufa of the near ground air of the world is ascending in the century, which is more evident in the northern hemisphere. Sea level is also exhibiting a trend of rise. The paper predicts the impact to the water level of Pearl Rivers and coastal stormy tides and invasion of saline tides by the estimate of a 0.4 to 1 mete rise in sea level in future 40 years.The damage thus caused to the Pearl River Delta and especially to Guangzhou is subsequently analyzed. The authors holds that global warming and sea level rise at present are yet to be certified and research and detection for this purpose should be strengthened.