酸沉降是指大气中的酸性物质以降水的形式或者在气流作用下迁移到地面的过程。酸沉降包括“湿沉降”和“干沉降”。湿沉降通常指沉降物质随雨雪过程而沉降到界面的过程。干沉降是指大气中的酸性物质在气流的作用下直接迁移到地面的过程。目前，人们对酸雨的研究较多，已将酸沉降与酸雨的概念等同起来。
The results show as follows.1) There was serious acid deposition in Changsha Yuelu Mountain and the main ions were SO42-, NO3-, Ca2+, NH4+.
结果表明：1)长沙岳麓山地区酸沉降污染严重。
参考来源 - 长沙岳麓山小流域水—土系统对酸沉降的响应研究A model of forest canopy reaction to acid precipitation was suggested to simulate the throughfall chemistry. Canopy reactions of Pinus massoniana and Michelia macclurei Var. sublanea in Liuzhou,Guangxi were measured during one year perjod.
建立了酸沉降—冠层反应模型,并计算冠层穿落水的化学特征。
参考来源 - 期刊学术社区Acid deposition will lead to forest decline, soil acidification, accumulation of toxic substances and a reduction in biodiversity.
酸沉降会导致森林衰退、土壤酸化、有毒物质富集和生物多样性减少。
参考来源 - 杉木幼龄林对模拟氮硫复合沉降的响应·2,447,543篇论文数据，部分数据来源于NoteExpress
陆地生态系统对酸沉降的缓冲作用主要由土壤和植被完成。
The buffering function to acid rain deposition is mainly fulfilled by soil and plant.
酸沉降对菌根影响在分子水平上的表现受到研究者的关注。
The researchers are concerning about the effects of acid precipitation on mycorrhizae on the molecular level.
盐基阳离子排放清单的建立，对于中国酸沉降控制有重要的意义。
A thorough inventory of base cation emissions in China is needed to develop programs for acid deposition control.
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