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收割强度对粉绿狐尾藻生长和水质的影响
引用本文:俞新慧,吴晓东,葛绪广,桂智凡,周梦蝶,卞玲玲,刘恋.收割强度对粉绿狐尾藻生长和水质的影响[J].水生态学杂志,2022,43(1):95-102.
作者姓名:俞新慧  吴晓东  葛绪广  桂智凡  周梦蝶  卞玲玲  刘恋
作者单位:湖北师范大学城市与环境学院 湖北 黄石 黄石市土壤污染防治重点实验室 湖北 黄石,湖北师范大学城市与环境学院 湖北 黄石 黄石市土壤污染防治重点实验室 湖北 黄石,湖北师范大学城市与环境学院 湖北 黄石 黄石市土壤污染防治重点实验室 湖北 黄石,湖北师范大学城市与环境学院 湖北 黄石 黄石市土壤污染防治重点实验室 湖北 黄石,湖北师范大学城市与环境学院 湖北 黄石 黄石市土壤污染防治重点实验室 湖北 黄石,湖北师范大学城市与环境学院 湖北 黄石 黄石市土壤污染防治重点实验室 湖北 黄石,湖北师范大学城市与环境学院 湖北 黄石 黄石市土壤污染防治重点实验室 湖北 黄石
基金项目:湖北省教育厅科学技术研究项目(Q20182502,D20152503)和湖北师范大学湖泊流域重金属污染机理与生态修复创新团队项目
摘    要:通过模拟实验,研究了不同收割强度对粉绿狐尾藻生长和水质的影响,以期为外来物种的管理提供参考。结果表明:(1)收割对粉绿狐尾藻枝条生长恢复和株高影响显著。对照组最终株高最大,达到187.0cm,并在水面形成冠层。收割组第一次收割后均能完全恢复;第二次收割,高收割强度(75%)直到实验结束后未恢复,且随着收割频次的增加,枝条恢复的时间延长。(2)收割减少了粉绿狐尾藻分枝数。对照组分枝数最高,达到6.9个/株,15%-75%收割组分为4.3、4.0、3.6、2.2和1.8个/株。(3)收割显著降低了粉绿狐尾藻的生物量。15%-75%收割组的生物量分别下降为对照组的10.11%、3.23%、2.47%、2.29%和0.80%。(4)粉绿狐尾藻收割对水质影响显著。在粉绿狐尾藻生长旺盛期,对其进行中、低强度的收割能有效改善水质。收割对控制粉绿狐尾藻生长效果明显,结合水质指标,以低强度收割2-3次为宜。

关 键 词:粉绿狐尾藻  收割  生长  水质
收稿时间:2020/4/4 0:00:00
修稿时间:2020/8/2 0:00:00

Effects of Harvest Intensity on Myriophyllum Aquaticum Growth and Water Purification
YU Xin-hui,WU Xiao-dong,GE Xu-guang,GUI Zhi-fan,ZHOU Meng-die,BIAN Ling-ling,LIU Lian.Effects of Harvest Intensity on Myriophyllum Aquaticum Growth and Water Purification[J].Journal of Hydroecology,2022,43(1):95-102.
Authors:YU Xin-hui  WU Xiao-dong  GE Xu-guang  GUI Zhi-fan  ZHOU Meng-die  BIAN Ling-ling  LIU Lian
Institution:College of Urban and Environmental Sciences,Hubei Normal University,College of Urban and Environmental Sciences,Hubei Normal University,College of Urban and Environmental Sciences,Hubei Normal University,College of Urban and Environmental Sciences,Hubei Normal University,College of Urban and Environmental Sciences,Hubei Normal University,College of Urban and Environmental Sciences,Hubei Normal University,College of Urban and Environmental Sciences,Hubei Normal University
Abstract:In order to provide reference for the management of alien species, different harvest intensity on growth of Myriophyllum aquaticum and water quality were researched through simulation experiments. The results showed that: (1) Harvesting had a significant effect on recovery of shoots and plant height of M. aquaticum. In the control group, the ultimate plant height reached 187.0cm, and a canopy was formed on the water surface. All groups could fully recover in the first harvest. In the second harvest of 75% high intensity,subjects did not recover by the end of the experiment, and with the increase of harvest frequency, the recovery time of branches was prolonged; (2) Harvesting reduced the number of branches of M. aquaticum . The control group had the highest number of branches, which reached 6.9 / plant.The number of branches of 15%-75% harvest groups fell to 4.3, 4.0, 3.6, 2.2 and 1.8 / plant; (3) Harvesting significantly reduced the biomass of M. aquaticum. The biomass of 15%-75% harvest group respectively decreased to 10.11%, 3.23%, 2.47%, 2.29% and 0.80% of the control group; (4) The harvest of M. aquaticum had a significant impact on water quality. To harvest M. aquaticum in medium and low intensity during the growing period could effectively improve water quality. Harvesting has obvious effect oncontrolling the growth of M. aquaticum, and 2~3 times low intensity harvest was appropriate with a reference to water quality.
Keywords:Myriophyllum Aquaticum  Harvest  Growth  Water quality
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