南京农业大学学报2025，Vol.48Issue(3)：528-537,10.DOI:10.7685/jnau.202402012
高温对水生观赏植物组合修复富营养化水体效果的影响
Effects of high temperature on purification of aquatic ornamental plant combination treating eutrophic water
摘要
Abstract
[Objectives]This study aimed to investigate the potential adaptability of aquatic ornamental plant combination to high temperature and their ability to purify eutrophic water under warming conditions.[Methods]Three aquatic ornamental plant species including Iris pseudacorus,Nymphaea tetragona and Ceratophyllum demersum were used as experimental materials,and the changes of purification effects,growth and physiological characteristics of plant species combination at normal temperature(28℃by day/18℃at night),high temperature(34℃by day/24℃at night)and extremely high temperature(40℃by day/30℃at night)were studied in the hydroponics experiment for 28 days.[Results]Compared with normal temperature,high temperature enhanced the purification effect of plant combination and increased the removal rates of total phosphorus(TP),total nitrogen(TN)and chemical oxygen demand(COD)in the water body,reaching 99.25%,94.40%and 50.00%,respectively,while the concentration of dissolved oxygen(DO)significantly increased.However,the removal rates of TP,ammonia nitrogen(NH+4-N)and DO concentration significantly decreased at extremely high temperature.In addition,high temperature favored the growth of the three plants,promoted chlorophyll content,lowered relative electrical conductivity,and increased the accumulation of TN in each plant and TP in N.tetragona.However,only C.demersum was better adapted to extremely high temperature,while the growth of I.pseudacorus and N.tetragona were stressed.[Conclusions]High temperature could promote the restoration of eutrophic water body by the plant combination of I.pseudacorus+N.tetragona+C.demersum,but the plant combination as a whole was stressed,and the restoration efficiency was reduced at extremely high temperature.关键词
植物组合/温度/富营养化/水体净化/植物修复Key words
plant combination/temperature/eutrophication/purification of water body/phytoremediation分类
环境科学引用本文复制引用
张晓芝,刘敏,王小文,顾嘉颖,徐迎春,金奇江,王彦杰..高温对水生观赏植物组合修复富营养化水体效果的影响[J].南京农业大学学报,2025,48(3):528-537,10.基金项目
国家自然科学基金项目(32071829) （32071829）
中央高校基本科研业务费专项资金(KYZZ201919,KYZZ2021003) （KYZZ201919,KYZZ2021003）
