作　　者： ; ; (刘岸东）; (史文飞）; (程睿）;

机构地区： 深圳市如茵生态环境建设有限公司深圳518057

出　　处： 《亚热带水土保持》 2013年第2期12-16,36,共6页

摘　　要： 2010年在鼎湖山自然保护区,通过野外原位模拟酸雨控制实验和施用石灰、污水污泥和联合施用石灰+污水污泥3种土壤酸化改良剂,研究了保护区内三种森林土壤在受到酸沉降影响后,土壤pH值和交换性Al3+、H+浓度的动态变化以及投加修复剂后混交林土壤酸度的变化情况。结果表明:三种森林土壤酸化严重(pH<4.5),pH值随处理酸度降低而下降;土壤交换性酸(H+、Al3+)含量随处理酸度降低而增加。酸沉降中H+的输入,导致土壤铝被活化。三种改良剂的施用均可以缓解土壤酸化,降低土壤交换性酸(H+、Al3+)含量,从而降低植被铝中毒风险。三种修复技术中,联合施用石灰+污水污泥修复技术效果最好。 In the Dinghushan Natural Reserve in Year 2010,through field in situ simulated acid rain control experiment by applying three soil acid modifiers such as lime,sewage mud and combination of lime and sewage mud,it was studied that among three kinds of forest soils,the dynamic changes of soil pH value,viscosity of commutative A13 ＋ and H＋,and the soil acidity of mixed forest after given the remediator after the impact of acid precipitation.The results show that these three kinds of forest soils suffered the severe acidification（pH 4.5）,the value of pH decrease with the lowered of treated acidity,while the content of commutative acid（H＋ and A13 ＋） increase with the lowered of the treated acidity.Import of the H＋ in the acid precipitation resulted in the activation of the soil aluminum.The application three modifiers,all may mitigate the soil acidity,reduce the content of soil commutative acid（A13 ＋ and H＋）,so as to reduce the risk of vegetation aluminum intoxication.Of these three modifiers,the combination of lime and sewage mud has the best recovery effect.

关 键 词： 森林生态 土壤酸化 修复技术

领　　域： [农业科学] [农业科学]