生物操纵控藻技术数学模型构建及情景分析研究  

Mathematical Model Construction and Scenario Analysis of Bio-manipulation Algae Control Technology

作　　者：时培杰 SHI Peijie(Shanghai Quguan Engineering Design Consulting Co., Ltd., Shanghai 200041, China;Technology Innovation Center of Urban Territorial Space Ecological Restoration Engineering, Ministry of Natural Resources, Shanghai 200062, China)

机构地区：[1]上海渠观工程设计咨询有限公司,上海200041 [2]自然资源部大都市国土空间生态修复工程技术创新中心,上海200062

出　　处：《水电与新能源》2021年第12期41-44,共4页Hydropower and New Energy

基　　金：自然资源部大都市区国土空间生态修复工程技术创新中心开放课题项目,上海典型区域水土保持监测指标体系研究(CXZX202011);华东师范大学上海市城市化生态过程与生态恢复重点实验室开放课题项目,上海市典型区域水土保持监测指标体系研究(SHUE2021A15)。

摘　　要：富营养化问题已成为国内湖泊面临的现实问题,关于蓝藻水华现象的报道频发。考虑营养元素(N)在水体中的周转,对捕食者-被捕食者模型进行修正,建立浮游动物-藻类捕食过程与营养盐循环耦合模型。通过模拟生物操纵技术,发现200 d内第一次藻密度峰值与200 d内藻密度最大值在食浮游动物鱼类的捕食压力较小时(小于0.03 d-1)呈现出相反的趋势。这提醒我们治理水华时存在不同的策略。With the frequent reports of cyanobacteria blooms,eutrophication has become an urgent problem for lakes in China.Considering the cycle process of the Nitrogen element in water,the predator-prey model is modified and a coupling model of zooplankton-algae predation process and nutrient cycle is established.Simulation results of the developed mathematical model of the bio-manipulation technology show that,when the predation pressure of zooplanktivorous fish is relatively small(less than 0.03d-1),the first peak value and the maximum value of algal density within 200 days show opposite trends,which enlightens us that different strategies should be adopted to control water blooms.

关 键 词：生态系统模型 生物操纵技术 湖泊富营养化 

分 类 号：S968.4[农业科学—水产养殖]