中国地理科学(英文版) ›› 2010, Vol. 20 ›› Issue (4): 318-329.doi: 10.1007/s11769-010-0404-6

• 论文 • 上一篇    下一篇

Estimation of Ecological Water Requirements Based on Habitat Response to Water Level in Huanghe River Delta, China

CUI Baoshan1, HUA Yanyan1, WANG Chongfang1, LIAO Xiaolin1, TAN Xuejie1, TAO Wendong2   

  1. 1. State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Beijing Normal University, Beijing 100875, China;
    2. Department of Environmental Resources and Forest Engineering, College of Environmental Science and Forestry, State University of New York, NY 13210, USA
  • 收稿日期:2009-12-17 修回日期:2010-04-28 出版日期:2010-07-01 发布日期:2010-08-23
  • 通讯作者: CUI Baoshan.E-mail:cuibs@bnu.edu.cn;cuibs67@yahoo.com E-mail:cuibs@bnu.edu.cn;cuibs67@yahoo.com
  • 基金资助:

    Under the auspices of Major State Basic Research Development Program of China (No.2006CB403303);National Natural Science Foundation of China (No.U0833002,40571149);Scientific Research Foundation of Beijing Normal University (No.2009SD-24)

Estimation of Ecological Water Requirements Based on Habitat Response to Water Level in Huanghe River Delta, China

CUI Baoshan1, HUA Yanyan1, WANG Chongfang1, LIAO Xiaolin1, TAN Xuejie1, TAO Wendong2   

  1. 1. State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Beijing Normal University, Beijing 100875, China;
    2. Department of Environmental Resources and Forest Engineering, College of Environmental Science and Forestry, State University of New York, NY 13210, USA
  • Received:2009-12-17 Revised:2010-04-28 Online:2010-07-01 Published:2010-08-23
  • Supported by:

    Under the auspices of Major State Basic Research Development Program of China (No.2006CB403303);National Natural Science Foundation of China (No.U0833002,40571149);Scientific Research Foundation of Beijing Normal University (No.2009SD-24)

摘要:

In recent years,wetland ecological water requirements (EWRs) have been estimated by using hydrological and functional approaches,but those approaches have not yet been integrated for a whole ecosystem.This paper presents a new method for calculating wetland EWRs,which is based on the response of habitats to water level,and determines water level threshold through the functional integrity of habitats.Results show that in the Huanghe (Yellow) River Delta water levels between 5.0 m and 5.5 m are required to maintain the functional integrity of the wetland at a value higher than 0.7.One of the dominant plants in the delta,Phragmites australis,tolerates water level fluctuation of about ± 0.25 m without the change in wetland functional integrity.The minimum,optimum and maximum EWRs for the Huanghe River Delta are 9.42×106 m3,15.56×106 m3 and 24.12×106 m3 with water levels of 5.0 m,5.2 m and 5.5 m,corresponding to functional integrity indices of 0.70,0.84 and 0.72,respectively.A wetland restoration program has been performed,which aims to meet these EWRs in attempt to recover from losses of up to 98% in the delta's former wetland area.

关键词: water level-habitat response, functional integrity, ecological water requirements, wetland, Huanghe River Delta

Abstract:

In recent years,wetland ecological water requirements (EWRs) have been estimated by using hydrological and functional approaches,but those approaches have not yet been integrated for a whole ecosystem.This paper presents a new method for calculating wetland EWRs,which is based on the response of habitats to water level,and determines water level threshold through the functional integrity of habitats.Results show that in the Huanghe (Yellow) River Delta water levels between 5.0 m and 5.5 m are required to maintain the functional integrity of the wetland at a value higher than 0.7.One of the dominant plants in the delta,Phragmites australis,tolerates water level fluctuation of about ± 0.25 m without the change in wetland functional integrity.The minimum,optimum and maximum EWRs for the Huanghe River Delta are 9.42×106 m3,15.56×106 m3 and 24.12×106 m3 with water levels of 5.0 m,5.2 m and 5.5 m,corresponding to functional integrity indices of 0.70,0.84 and 0.72,respectively.A wetland restoration program has been performed,which aims to meet these EWRs in attempt to recover from losses of up to 98% in the delta's former wetland area.

Key words: water level-habitat response, functional integrity, ecological water requirements, wetland, Huanghe River Delta