湿地科学与管理
濕地科學與管理
습지과학여관리
Wetland Science & Management
2015年
3期
58-62
,共5页
湿地%生态需水量%水循环%水动力模型
濕地%生態需水量%水循環%水動力模型
습지%생태수수량%수순배%수동력모형
Wetland%Ecological water demand%Water cycling%Dynamic model
针对南京上秦淮湿地这一水网密布、水系连接复杂的地区,采用MIKE21二维水动力模型建立了湿地补水及水循环的数学模型.基于模型研究了湿地生态补水量及补水、水循环方案.模拟结果表明:在进水、引水、出水设施的共同作用下,水系流动通畅,流场分布较均匀合理.除了能很好地实现全区补水,还能保证整体水域流速,特别是几个湖区也能保持基本的流动状态.基于模型的湿地补水及水循环对于湿地自净能力的提高和水质维护有很大作用.
針對南京上秦淮濕地這一水網密佈、水繫連接複雜的地區,採用MIKE21二維水動力模型建立瞭濕地補水及水循環的數學模型.基于模型研究瞭濕地生態補水量及補水、水循環方案.模擬結果錶明:在進水、引水、齣水設施的共同作用下,水繫流動通暢,流場分佈較均勻閤理.除瞭能很好地實現全區補水,還能保證整體水域流速,特彆是幾箇湖區也能保持基本的流動狀態.基于模型的濕地補水及水循環對于濕地自淨能力的提高和水質維護有很大作用.
침대남경상진회습지저일수망밀포、수계련접복잡적지구,채용MIKE21이유수동력모형건립료습지보수급수순배적수학모형.기우모형연구료습지생태보수량급보수、수순배방안.모의결과표명:재진수、인수、출수설시적공동작용하,수계류동통창,류장분포교균균합리.제료능흔호지실현전구보수,환능보증정체수역류속,특별시궤개호구야능보지기본적류동상태.기우모형적습지보수급수순배대우습지자정능력적제고화수질유호유흔대작용.
Shangqinhuai wetland in Nanjing city has been chosen to be the research target due to its intense water network and complex connectivity. Dynamic numerical model of water supply and cycling of the wetland has been set up using 2D modeling tool of DHI MIKE21. The water demand and the scheme of water supply and recycling were studied based on the model. The modeling results showed that the water system lfowed lfuently and the current field was uniform and reasonable. Not only the water demand was met, but also the water current velocity can be guaranteed, especially for the big lake area. The water supply and recycling measures based on the modeling results will be very effective for its purification capacity and water quality maintenance.
