閬ユ劅鎶�鏈笌搴旂敤 鈥衡�� 2022, Vol. 37 鈥衡�� Issue (1): 173-185.DOI: 10.11873/j.issn.1004-0323.2022.1.0173

鈥� 闈掍績浼氬崄鍛ㄥ勾涓撴爮 鈥� 涓婁竴绡�    涓嬩竴绡�

鍩轰簬Sentinel-1 SAR鏁版嵁宸㈡箹娴佸煙娲按鏃剁┖鍔ㄦ�佸彉鍖栫洃娴嬬爺绌�

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  • 鏀剁鏃ユ湡:2021-10-21 淇洖鏃ユ湡:2021-12-27 鍑虹増鏃ユ湡:2022-02-20 鍙戝竷鏃ユ湡:2022-04-08
  • 閫氳浣滆��: 浣曡壋鑺�
  • 浣滆�呯畝浠�:璐句匠浣筹紙1994-锛夛紝濂筹紝娌冲崡椹婚┈搴椾汉锛岀澹爺绌剁敓锛屼富瑕佷粠浜嬫椽姘撮仴鎰熷強瑙勫垝搴旂敤鐮旂┒銆侲?mail:jiajiajia@stumail.nwu.edu.cn
  • 鍩洪噾璧勫姪:
    鍥藉姘翠綋姹℃煋鎺у埗涓庢不鐞嗙鎶�閲嶅ぇ涓撻」(2017ZX07603-001)

Research on Spatial-temporal Dynamic Changes of Flood in Lake Chaohu Basin based on Sentinel-1 SAR Satellite Image

Jiajia Jia1,2(),Jinge Ma2,Ming Shen2,Tianci Qi2,Zhigang Cao2,Yanfen He1(),Hongtao Duan1,2   

  1. 1.Northwestern University School of Urban and Environmental Sciences锛孹i'an 710127锛孋hina
    2.Institute of Remote Sensing and Geo-Information Science锛孨anjing锛孋hina Institute of Geography and Lakes锛孋hinese Academy of Sciences锛孨anjing 21000锛孋hina
  • Received:2021-10-21 Revised:2021-12-27 Online:2022-02-20 Published:2022-04-08
  • Contact: Yanfen He

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鍏抽敭璇�: 宸㈡箹娴佸煙, Sentinel-1, 娲按鐏惧, GEE

Abstract:

Flood disaster has great harm and poses a great threat to regional people's lives and property and economic development. Therefore锛� the continuous high-time resolution remote sensing monitoring will be conducive to more objective and accurate detection of the temporal and spatial variation characteristics of flood risk areas. This research takes Chaohu Lake Basin as the experimental area锛� based on Google Earth Engine platform锛� collects Sentinel-1 Synthetic Aperture Radar 锛圫AR锛� images锛� uses the flood inundation identification method combining spectral relationship and threshold segmentation to map the flood range of Chaohu Lake Basin from 2015 to 2020锛� and combines land use data锛� The impact of flood on farmland and residential areas represented by construction land in Chaohu Lake Basin is analyzed. The results show that锛� 锛�1锛� the accuracy of this method is 3%~7% higher than that of single band threshold method and simple index method锛� and can quickly extract the flood inundation range of watershed over the years by using remote sensing data锛� 锛�2锛� From 2015 to 2020锛� two major floods and one small-scale flood were monitored锛� and the inundation scope was concentrated in Hangbu River锛� Yuxi River锛� Zhaohe River and other river areas锛� 锛�3锛� Farmland accounts for 86.47%~95.35% of the flooded area锛� and construction land accounts for 4.47%~5.36%. The residential areas affected by the flood are mainly grass-roots villages and towns. The research shows that the application of SAR satellite data in flood monitoring can effectively monitor the impact range of flood on farmland and rural residential areas锛� which is very key to formulate relevant planning strategies in the future锛� strengthen rural flood control in the basin and ensure personnel and food security.

Key words: Chaohu Lake Basin, Sentinel-1, Flood disaster, GEE

涓浘鍒嗙被鍙�: