中国地理科学 ›› 2015, Vol. 25 ›› Issue (6): 728-738.doi: 10.1007/s11769-015-0745-2

• 论文 • 上一篇    下一篇

Hydrologic Modeling Impacts of Post-mining Land Use Changes on Streamflow of Peace River, Florida

ZHANG Jing1, Mark ROSS2   

  1. 1. Key Laboratory of Resource Environment and GIS in Beijing, Capital Normal University, Beijing 100048, China;
    2. Department of Civil and Environmental Engineering, University of South Florida, 4202 E. Fowler Ave, ENB 118, Tampa, FL 33620, U.S.A.
  • 收稿日期:2014-01-21 修回日期:2014-04-23 出版日期:2015-06-27 发布日期:2015-11-05
  • 通讯作者: ZHANG Jing. E-mail: maggie2008zj@yahoo.com E-mail:maggie2008zj@yahoo.com
  • 基金资助:

    Under the auspices of National Natural Science Foundation of China (No. 41271004), Beijing Municipal Science & Technology New Star Project Funds (No. 2010B046)

Hydrologic Modeling Impacts of Post-mining Land Use Changes on Streamflow of Peace River, Florida

ZHANG Jing1, Mark ROSS2   

  1. 1. Key Laboratory of Resource Environment and GIS in Beijing, Capital Normal University, Beijing 100048, China;
    2. Department of Civil and Environmental Engineering, University of South Florida, 4202 E. Fowler Ave, ENB 118, Tampa, FL 33620, U.S.A.
  • Received:2014-01-21 Revised:2014-04-23 Online:2015-06-27 Published:2015-11-05
  • Contact: ZHANG Jing. E-mail: maggie2008zj@yahoo.com E-mail:maggie2008zj@yahoo.com
  • Supported by:

    Under the auspices of National Natural Science Foundation of China (No. 41271004), Beijing Municipal Science & Technology New Star Project Funds (No. 2010B046)

摘要:

Whether mining activity results in reduced flow of surface water in the Peace River Watershed of Florida has been the subject of much debate. With increased dependence of downstream users on surface water flow of the Peace River as a source of drinking water for four coastal counties in Southwest Florida and problems of water security, the debate has been intensified. It is possible to assess relationships of mining with streamflow in the upper reaches of the Peace River Basin using hydrologic modeling and identify mined sub-basins. In this work, land-use change impacts were simulated by the Hydrological Simulation Program—Fortran (HSPF) model based on geographical information system (GIS) tools, to compare pre-and post-mining streamflows at a study site of the Peace River in west-central Florida. The purpose of this study was to determine if land-use changes caused by mining have negatively impacted streamflow in the Peace River. Changes of land use were identified before and after mining activities. A coupled volume-water depth-discharge (V-h-Q) model based on stage/storage and stage/discharge was applied using HSPF for the pre-mining and post-mining models, respectively. Daily simulated post-mining hydrographs from HSPF were plotted with the calibrated pre-mining results and streamflow hydrographs from the 18 gauging stations, to compare timing of peaks, low flows and flow trends. Analyses of percent exceedances of flow frequency curves of the streams indicated that most streams had similar distributions for mined (reclaimed) and pre-mining periods. In the streamflow change analysis, streamflows actually increased in mining-affected basins at nearly half the stations. Streamflows at other stations diminished. Overall from this comprehensive study, there were declines in streamflow at most gauging stations on the mainstem of the Peace River and its tributaries. The results of this study suggest that regional planning is urgently needed to propose reclamation schemes that enhance regional hydrology.

关键词: post-mining, land-use changes, streamflow, hydrologic model, Hydrological Simulation Program—Fortran (HSPF) model

Abstract:

Whether mining activity results in reduced flow of surface water in the Peace River Watershed of Florida has been the subject of much debate. With increased dependence of downstream users on surface water flow of the Peace River as a source of drinking water for four coastal counties in Southwest Florida and problems of water security, the debate has been intensified. It is possible to assess relationships of mining with streamflow in the upper reaches of the Peace River Basin using hydrologic modeling and identify mined sub-basins. In this work, land-use change impacts were simulated by the Hydrological Simulation Program—Fortran (HSPF) model based on geographical information system (GIS) tools, to compare pre-and post-mining streamflows at a study site of the Peace River in west-central Florida. The purpose of this study was to determine if land-use changes caused by mining have negatively impacted streamflow in the Peace River. Changes of land use were identified before and after mining activities. A coupled volume-water depth-discharge (V-h-Q) model based on stage/storage and stage/discharge was applied using HSPF for the pre-mining and post-mining models, respectively. Daily simulated post-mining hydrographs from HSPF were plotted with the calibrated pre-mining results and streamflow hydrographs from the 18 gauging stations, to compare timing of peaks, low flows and flow trends. Analyses of percent exceedances of flow frequency curves of the streams indicated that most streams had similar distributions for mined (reclaimed) and pre-mining periods. In the streamflow change analysis, streamflows actually increased in mining-affected basins at nearly half the stations. Streamflows at other stations diminished. Overall from this comprehensive study, there were declines in streamflow at most gauging stations on the mainstem of the Peace River and its tributaries. The results of this study suggest that regional planning is urgently needed to propose reclamation schemes that enhance regional hydrology.

Key words: post-mining, land-use changes, streamflow, hydrologic model, Hydrological Simulation Program—Fortran (HSPF) model