| 土壤对酸沉降缓冲机制探讨 |
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| 中文摘要 |
| 土壤对酸沉降具有一定的缓冲作用,不同土壤的缓冲能力也各不相同。那么,土壤缓冲作用的本质是什么,不同土壤为什么具有不同的缓冲能力,要解决这些问题,就必须要了解土壤的缓冲机制,了解土壤内部的化学过程。 |
| 英文摘要 |
| Buffering mechanism of soil for acidic precipitation is an important topic in studying the effects of acidic precipitation on soil. Based on simulation of leaching experiments of acidic precipitation for some forest soils in China, this paper brings forward a discussion about the buffering mechanism of soil for acidic precipitation. The soil consumes H+ ion through releasing cations, the ratal amount of released cations is equal to the total amonut of consumed H+ ion in soil. The buffering mechanism of soil consists ot three processes, which are the exchange of cations, hydrolysis of aluminum hydroxide, and weathering of primary minerals. The importance of each process is different in various conditions. |
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