Water Science and Engineering 2010, 3(3) 257-268 DOI:   10.3882/j.issn.1674-2370.2010.03.002  ISSN: 1674-2370 CN: 32-1785/TV

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Keywords
floodplain forest
regeneration flow
minimum flood stage
inundated forest width
ideal point method
Authors
Song-hao Shang
XIao-min Mao
PubMed
Article by Song-hao Shang
Article by XIao-min Mao

Determination of minimum flood flow for regeneration of floodplain forest from inundated forest width-stage curve

Song-hao Shang1,Xiaomin Mao2

1. Tsinghua University
2. China Agricultural University

Abstract

Flood is essential for the regeneration and growth of floodplain forests in arid and semiarid regions. However, river flow, especially the flood, had changed greatly with the increase of water diversion from rivers and/or reservoir regulation, which may result in severer deterioration of the floodplain ecosystems. The estimation of appropriate flood stage to inundate the floodplain forests is necessary for their restoration or protection in flow regulation. To balance the economical water use and flood for the floodplain forest, we proposed the inundated forest width method to estimate minimum flood stage for floodplain forests from the inundated forest width – stage curve. The minimum flood stage was defined as the breakpoint of the inundated forest width – stage curve, and could be determined directly from the curve or analytically. For the latter case, the problem under consideration was described by a multi-objective optimization model, which can be solved by the ideal point method. In order to protect the forest in a river floodplain in semiarid area in Xinjiang that subjected to reservoir regulation in the upstream, the proposed method was used to determine the minimum flood stage and flow for the forest. Field survey on hydrology, topography and forest distribution was carried out at representative cross sections in the floodplain. Based on the surveying results, minimum flood flows for six representative cross sections were estimated to be 306 m3/s to 393 m3/s. Their maximum, 393 m3/s, was taken as the minimum flood flow for the studying river reach. It provides an appropriate flood flow for the protection of floodplain forest and can be used in the regulation of the upstream reservoir.

Keywords floodplain forest   regeneration flow   minimum flood stage   inundated forest width   ideal point method  
Received 2010-04-14 Revised 2010-07-22 Online: 2010-09-27 
DOI: 10.3882/j.issn.1674-2370.2010.03.002
Fund:

SRF for ROCS, SEM;SRF for ROCS, SEM

Corresponding Authors: Song-hao Shang
Email: shangsonghao@tsinghua.org.cn
About author:

References:

Ahn, C., Moser, K. F., Sparks, R. E., and White, D. C. 2007. Developing a dynamic model to predict the recruitment and early survival of black willow (Salix nigra) in response to different hydrologic conditions. Ecological Modelling, 204(3-4), 315-325. [doi:10.1016/j.ecolmodel.2007.01.006]
Annear, T. C., and Conder, A. L. 1984. Relative bias of several fisheries instream flow methods. North American Journal of Fisheries Management, 4(4b), 531-539. [doi:10.1577/1548-8659(1984)4<531:RB OSFI>2.0.CO;2]
Beauchamp, V. B., and Stromberg, J. C. 2008. Changes to herbaceous plant communities on a regulated desert river. River Research and Applications, 24(6), 754-770. [doi:10.1002/rra.1078]
Braatne, J. H., Rood, S. B., Goater, L. A., and Blair, C. L. 2008. Analyzing the impacts of dams on riparian ecosystems: A review of research strategies and their relevance to the Snake River through Hells Canyon. Environmental Management, 41(2), 267-281. [doi:10.1007/s00267-007-9048-4]
Brunner, G. W. 2002. HEC-RAS River Analysis System Hydraulic Reference Manual (Version 3.1). Davis: U. S. Army Corps of Engineers.
Gippel, C. J., and Stewardson, M. J. 1998. Use of wetted perimeter in defining minimum environmental flows. Regulated Rivers: Research and Management, 14, 53-67.
Hughes, F. M. R., and Rood, S. B. 2003. Allocation of river flows for restoration of floodplain forest ecosystems: A review of approaches and their applicability in Europe. Environmental Management, 32(1), 12-33. [doi:10.1007/s00267-003-2834-8]
Mahoney, J. M., and Rood, S. B. 1998. Streamflow requirements for cottonwood seedling recruitment: An integrative model. Wetlands, 18(4), 634-645. [doi:10.1007/BF03161678]
Postel, S., and Richter, B. 2003. Rivers for Life: Managing Water for People and Nature. Washington, D. C.: Island Press.
Renöfält, B. M., Merritt, D. M., and Nilsson, C. 2007. Connecting variation in vegetation and stream flow: The role of geomorphic context in vegetation response to large floods along boreal rivers. Journal of Applied Ecology, 44(1), 147-157. [doi:10.1111/j.1365-2664.2006.01223.x]
Shang, S. H., Hu, Q. F., Lei, Z. D., and Yang, S. X. 2006. Ecological water use of forest-meadow land in a river valley in Xinjiang. Proceedings of the International Symposium on Sustainable Water Resources Management and Oasis-Hydrosphere-Desert Interaction in Arid Regions, 452-456. Beijing: Tsinghua University Press. (in Chinese)
Shang, S. H. 2008. A multiple criteria decision-making approach to estimate minimum environmental flows based on wetted perimeter. River Research and Applications, 24(1), 54-67. [doi:10.1002/rra.1047]
Tharme, R. E. 2003. A global perspective on environmental flow assessment: Emerging trends in the development and application of environmental flow methodologies for rivers. River Research and Applications, 19(5-6), 397-441. [doi:10.1002/rra.736]

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