CAJ | 학술논문

为了解酸雨与 Cd 复合污染对紫萼膜脂过氧化及形态特征的影响，本试验采用土培的方式，人工模拟 pH 分别为6．5，5．5，4．5，3．5，2．5梯度酸雨与不同浓度（0，10，30，50，100 mg／kg）Cd 复合胁迫紫萼，从植物形态特征，质膜过氧化，抗氧化方面的响应研究复合污染对植物的生理生态影响特点。结果表明，复合污染比单一污染对植物伤害更大，二者间存在明显的交互作用，并非简单的加和作用，更多地表现为协同作用，高强度复合污染对紫萼的影响更大。紫萼对低强度酸雨和低浓度 Cd 污染有一定耐受性。Cd 对植物的影响比酸雨更显著，是复合污染下造成植物伤害的主要因素。CAT 活性对 Cd 污染比 SOD 敏感；Cd 浓度为30 mg／kg 和酸雨 pH＝3．5是植物可见伤害的临界值。综合各指标对复合污染的响应，紫萼可作为酸雨区土壤 Cd 污染背景下修复植物的选择。
위료해산우여 Cd 복합오염대자악막지과양화급형태특정적영향，본시험채용토배적방식，인공모의 pH 분별위6．5，5．5，4．5，3．5，2．5제도산우여불동농도（0，10，30，50，100 mg／kg）Cd 복합협박자악，종식물형태특정，질막과양화，항양화방면적향응연구복합오염대식물적생리생태영향특점。결과표명，복합오염비단일오염대식물상해경대，이자간존재명현적교호작용，병비간단적가화작용，경다지표현위협동작용，고강도복합오염대자악적영향경대。자악대저강도산우화저농도 Cd 오염유일정내수성。Cd 대식물적영향비산우경현저，시복합오염하조성식물상해적주요인소。CAT 활성대 Cd 오염비 SOD 민감；Cd 농도위30 mg／kg 화산우 pH＝3．5시식물가견상해적림계치。종합각지표대복합오염적향응，자악가작위산우구토양 Cd 오염배경하수복식물적선택。
In order to better understand how acid rain and heavy metals work together to influence the mem-brane lipid peroxidation and morphological characteristics of Hosta ventricosa ,in a soil culture experiment,dif-ferent pH (6.5,5.5,4.5,3.5 and 2.5 )of acid rain and different concentrations (0,10,30,50 and 100 mg/kg)of Cd were set to test how they influence morphological characteristics,lipid peroxidation and antioxi-dant activity of the plants.Compound pollutants had more influence on plants than with single pollutants. There was significant interaction between the acid rain and Cd.H .ventricosa showed some tolerance to low pH acid rain and low concentrations of Cd.However,acid rain combined with Cd caused a synergistic effect.The Cd influenced H .ventricosa more than acid rain,and as appeared to be a primary cause of plant damage.The CAT activity was more sensitive to Cd than SOD.Visible injury to plants was observed at 30 mg/kg of Cd and pH 3.5 of acid rain.All the indices indicated that H .ventricosa can be selected as the appropriate plant to re-mediate soils contaminated with Cd or affected by acid rain.