长江流域资源与环境 >> 2012, Vol. 21 >> Issue (Z2): 125-.

• 生态环境 • 上一篇    

基于CBERS/CCD遥感影像的塔里木河下游生态输水监测

艾尔肯·艾白不拉 | 刘桂林 | 艾里西尔·库尔班 | 阿布都米吉提·阿布利克木   

  1. (1.新疆维吾尔自治区塔里木河流域管理局|新疆 库尔勒 84100; 2.中国科学院新疆生态与地理研究所|新疆 乌鲁木齐 830011; 3.中国科学院南京地理与湖泊研究所|江苏 南京 210008|4.中国科学院大学|北京 100049
  • 出版日期:2012-12-19

ECOLOGIC WATER TRANSFUSION IN THE LOWER REACHES OF THE TARIM RIVER BASED ON CBERS/CCD IMAGE

Arkin ABAYDULLA1, LIU Guilin2,3,4, Alishib KURBAR2| Abdimijit ABLEKIM2   

  1. (1.Xinjiang Tarim River Basin Management Bureau,Korla 841000, China;2.Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China|3.Nanjing Institute of Geography and Limnology,Chinese Academy of Sciences, Nanjing 210008, China|4. University of Chinese Academy of Sciences,Beijing 100049, China
  • Online:2012-12-19

摘要:

根据塔里木河流域管理局提供的生态输水资料,进行系统整理及统计得到10次输水的时间、持续天数、输水量及水头到达处等信息,并基于ArcGIS 93软件将该信息标注在基础地理信息底图、遥感解译图上。选择了与生态输水同步的CBERS/CCD遥感影像,采用人机交互式目视解译的方法提取2000~2007年塔里木河下游输水河道、实际过水河道以及积水区,提取输水河长度、宽度、积水区域等信息,然后基于遥感解译信息来验证实际输水状况。结果表明:基于遥感技术获取的河道长度为51413 km,平均河道宽度为4223 m,与地面测量河道相比,其精度为975%。有水河道宽度与生态输水量呈现正相关。“漫溢”式的生态输水造成了大西海子水库到卡尔达依地势低洼区域的积水,与输水量、距离水库的距离相关。基于2000~2007年的遥感解译数据,生态输水资料提供的信息均是真实的。尽管基于遥感技术验证生态输水存在一定误差,但也能宏观动态监测实际输水过程

Abstract:

Based on the ecological water transfusion data from the Bureau of Tarim River Administration and Management (TRAM),the information about the time of conveyance,duration,water volume and arrival were collected to analyze the processes and impacts of ecological water transfusion in the lower reaches of the Tarim River.Using CBERS/CCD remote sensing images (195 m spatial resolution) during 2000-2007,actual river channel inundated with water and water accumulated areas including the length and width of the water surface were extracted by photo interpretation and digital image analysis.The information was then associated with water transfusion data and used to monitor ecological water transfusion situation.The results show that the length of river channel inundated with water was 51413 km,and the width of average river channel was about 4223 m.Compared with field investigations,the accuracy of the results derived from remote sensing images was 975%.The relationship between water channel width and ecological water transfusion volume was positively correlated.The maximum river channel width was more than 50 m,which appeared in 2003 because of the maximum ecological water transfusion.However, the minimum river channel width was only 2898 m in 2000 due to the minimum amount of ecological water transfusion."Overflow" type of ecological water transfusion had been adopted by the TRAM.As the result,rather amount of water had been accumulated in the lowlands from the Daxihaizi Reservoir to Kardy.It was closely related to the ecological water volume and the distance from the reservoir.The total number of flow accumulated areas between the Daxihaizi Reservoir and Kardy reached to the 153 from 2000 to 2007,and the area was about 1987 km2.In contrast,the number of flow accumulated areas was counted as only 43 from Kardy to the Tetima Lake,with an area of 832 km2.Overall,the results of remote sensing observation were in accordance with field measurements.However,there was certain uncertainty in our results,which might be associated with the quality of remote sensing images and the time differences between the exact time of water transfusion took place and the images were collected.We conclude that the remote sensing,Geography Information System (GIS),and Global Position System (GPS) may provide an accurate and convenient method to detect the ecological water transfusion process

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