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首页> 外文期刊>エアロゾル研究 >Characteristics of Ca and Mg Distribution in Soil of China and Their Relationship to Acidic Pollutants in the Atmosphere
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Characteristics of Ca and Mg Distribution in Soil of China and Their Relationship to Acidic Pollutants in the Atmosphere

机译：中国土壤钙镁分布特征及其与大气中酸性污染物的关系

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摘要

Ca and Mg contents in 41 kinds of soil samples in China were measured and the regional distribtions of Ca and Mg contents in the soil are presented as contour maps in this paper. The Ca and Mg contents in the soil samples are discussed in relation to the chemical components, the acid-buffering ability (#DELTA# C_b) of the atmospheric aerosol, and the acidification of precipitation. The contents of Ca and Mg decreased gradually from the north to the south and from the west to the east. The Ca content ranged from 0.01 to 16.3% with the average of 1.54%, and Mg varied from 0.2 to 4.0% with the average of 0.78%. The acid buffering ability of aerosol in Northern China was 375-1,710 neq/M~3, which was much higher than -92.8-71.3 neq/m~3 in Southern China. Generally, acid rain has been observed in Southern China but not Northern china. The regional distributions of acid- buffering ability of atmospheric aerosol and the acidity of precipitation coincided with the distribution of Ca and Mg contents in the soil. These results indicated that there are strong relationships among the Ca and Mg contents in soil, the acid-buffering ability of atmospheric aerosol and the acidification of precipitation in China.
机译：本文测量了中国41种土壤样品中钙，镁的含量，并以等高线图的形式给出了土壤中钙，镁含量的区域分布。讨论了土壤样品中Ca和Mg的含量与化学成分，大气气溶胶的酸缓冲能力（＃DELTA＃C_b）和沉淀物的酸化有关。从北到南，从西到东，钙和镁的含量逐渐降低。 Ca含量为0.01〜16.3％，平均为1.54％，Mg为0.2〜4.0％，平均为0.78％。中国北方地区气溶胶的酸缓冲能力为375-1,710 neq / m〜3，远高于中国南方地区的-92.8-71.3 neq / m〜3。通常，在中国南方观察到酸雨，而在中国北方没有观察到。大气气溶胶的酸缓冲能力和降水的酸度的区域分布与土壤中钙和镁含量的分布相吻合。这些结果表明，中国土壤中的钙和镁含量与大气气溶胶的酸缓冲能力以及降水的酸化之间存在密切的关系。

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