硅酸盐矿物麦饭石对沉水植物生理生态的影响  

EFFECTS OF MEDICAL STONE ON THE GROWTH OF SUBMERGED MACROPHYTES

作　　者：韩帆 刘子森[2,3] 严攀 贺锋 孙健[4] 张义 吴振斌[1,2] HAN Fan;LIU Zi-Sen;YAN Pan;HE Feng;SUN Jian;ZHANG Yi;WU Zhen-Bin(School of Resource&Environmental Engineering,Wuhan University of Technology,Wuhan 430070,China;State Key Laboratory of Freshwater Ecology and Biotechnology,Institute of Hydrobiology,Chinese Academy of Sciences,Wuhan 430072,China;University of Chinese Academy of Sciences,Beijing 100049,China;Central and Southern China Municipal Engineering Design&Research Institute Co.,Ltd.,Wuhan 430010,China)

机构地区：[1]武汉理工大学资源与环境工程学院,武汉430070 [2]中国科学院水生生物研究所淡水生态和生物技术国家重点实验室,武汉430072 [3]中国科学院大学,北京100049 [4]中国市政工程中南设计研究总院有限公司,武汉430010

出　　处：《水生生物学报》2019年第6期1353-1361,共9页Acta Hydrobiologica Sinica

基　　金：国家自然科学基金项目(51709254);中国科学院知识创新工程青年人才领域前沿项目资助~~

摘　　要：沉水植物的稳定生长是重建健康湖泊生态系统重要环节,底质条件是沉水植物生长的关键因素。研究通过观测沉水植物生理生态的变化来探讨麦饭石对其影响及作用机理。研究结果表明,与湖泥组相比,麦饭石可明显促进沉水植物苦草生长,覆盖1 cm厚度麦饭石的苦草植株高度、单株生物量优于湖泥组(P<0.05);改性麦饭石组的苦草株高、单株生物量高于麦饭石原石组(P<0.05)。麦饭石组中两种植物苦草和轮叶黑藻的光合色素、根系活力、丙二醛、过氧化物酶活等指标在一定程度上均优于湖泥组。检测发现麦饭石中含有丰富的植物生长所需的常量和微量元素,可以明显促进沉水植物生长。可见麦饭石有益于沉水植物生长,可进一步作为底质改良材料应用于湖泊生态修复工程。The steady growth of submerged plants is an important factor for the reconstruction of healthy lake ecosystem,and the sediment conditions are also the key factors for the growth of submerged plants.This study explores the effects of medical stone on its physiological and ecological changes in submerged plants.The results showed that the medical stone significantly promoted the growth of Vallisneria natans.The height and biomass of Vallisneria natans covered with 1 cm thick medical stone were better compared with the lake sediment group(P<0.05),and the modified medical stone group was better than the raw stone group(P<0.05)to promote the height and biomass of Vallisneria natans.The photosynthetic pigment,root activity,malondialdehyde(MDA),peroxidase(POD)activity and other indicators of the two plants,Vallisneria natans and Hydrilla verticillata in medical stone group were better than those in the lake sediment group.The medical stone contained abundant constant and trace elements that are required for the growth of submerged plants.Thus,medical stone is beneficial to the growth of submerged plants and can be further applied to ecological restoration projects as sediment improvement material.

关 键 词：麦饭石 苦草 轮叶黑藻 生理生态 促进作用 

分 类 号：Q142[生物学—生态学]