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SUMMARY:River habitat conservation and watershed modelling and management
DTSTART:20131031T171500
DTEND:20131031T180000
DTSTAMP:20260509T101015Z
UID:5083c034625d863319f7f9e286dc6f8c1c35e460115975e3e78030be
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Qiuwen Chen\, Chinese Academy of Sciences\, Beijing\nThe
  eco-environmental impacts of reservoir operation have become the bottlene
 ck of hydropower development.  This  research  is  to  develop  a  
 systematic methodology  to quantify  the  eco-environmental impacts of 
 hydropower production and adapt reservoir operations so as to balance the 
 social-economic interests and the river ecosystem conservation. The resear
 ch established a method to reveal the adaptation mechanism of target speci
 es to the changes of hydro-environmental factors from the angle of species
  physiology and ethology.\nBasing on the relations\, the research develope
 d a comprehensive  river  ecohydraulics  modeling system to simulate th
 e eco-environmental effects of reservoir operation and derive a reasonable
  hydrograph of ecological flow requirement. Finally\, it   proposed   
 an   optimization   model   to   adapt reservoir operations in ord
 er to balance social- economic interests and eco-environmental conservatio
 n. The methodology has been applied to adapt the operations of two cascade
 d reservoirs with diversion-type hydropower stations in the Yalong River f
 or fish habitat protection\, and to optimize the operation of clustered re
 servoirs in the Lijiang River for holistic ecosystem conservation.\nThe co
 nflicts between water quality protection and environmental capacity using 
 are becoming severe. TMDL（Total Maximum Daily Load）approach which is d
 eveloped in the United States a decade ago has been proved a successful st
 rategy to balance the conflict.\nThis  research  took  the  Beiyunhe 
  river  basin  as  the  studied  case\,  and  developed  a  pilot
   TMDL  for management of CODMn and NH3-N loads. The core of the TMDL sy
 stem was a model which integrated a semi-distributed  hydrological  modu
 le\,  a  diffusive  emission  module  and  a  one-dimensional  wat
 er  quality module. Filed monitoring data were collected and used for mod
 el calibration and verification. Through the simulations of typical hydrol
 ogical regimes (dry\, normal and wet)\, a preliminary scheme of daily load
  control was established\, which incorporated the local social-economic as
 pects. Meanwhile\, an online hydrological and water quality monitoring net
 work is integrated with the modelling system\, so as to achieve daily-base
 d watershed load management
LOCATION:GC B 330 http://plan.epfl.ch/?zoom=19&recenter_y=5864217.59147&re
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STATUS:CONFIRMED
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