| 引用本文: | 王大勇,管清花,金瑞清,等.基于遥感监测的沿运洼地内涝特征与影响因素研究[J].灌溉排水学报,2024,43(6):99-105. |
| WANG Dayong,GUAN Qinghua,JIN Ruiqing,et al.基于遥感监测的沿运洼地内涝特征与影响因素研究[J].灌溉排水学报,2024,43(6):99-105. |
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| 摘要: |
| 【目的】探究沿运邳苍郯新平原洼地内涝特征及影响因素。【方法】以沿运洼地为重点研究区域，在内涝影响范围内开展勘测、遥感解译等，分析洪涝前后归一化差异水体指数（NDWI）及归一化植被指数（NDVI）特征，研究沿运邳苍郯新平原涝洼地内涝影响范围变化及其对农作物长势影响，探索水利设施建设等对灾害范围的影响。【结果】①受灾作物2004年与2005年NDVI的差值为0.5，未受灾区域2004年与2005年NDVI差值为0.25，受灾作物NDVI显著降低，受灾区域内2005年整年作物生长情况弱于2004年。②台儿庄节制闸建成后可降低洪涝对附近农田的影响，有效减少洪涝灾害造成的经济损失。【结论】洪涝灾害对洼地内作物长势影响大于洼地外作物，水利设施建设可以有效减少洪涝灾害造成的经济损失；遥感监测技术是防治洪涝灾害的有效手段。 |
| 关键词: 沿运洼地；内涝特征；归一化差异水体指数；归一化植被指数；水利设施 |
| DOI：10.13522/j.cnki.ggps.2023516 |
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| Using remote sensing to study flooding and its detrimental impact in lowlands of the Grand Canal |
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WANG Dayong, GUAN Qinghua, JIN Ruiqing, LIU Dan, DOU Junwei, CHEN Xuequn, FAN Mingyuan
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1. Water Resources Research Institute of Shandong Province, Jinan 250014, China; 2. Haihe River, Huaihe River and
Xiaoqinghe River Basin Water Conservancy Management and Service Center of Shandong Province, Jinan 250014, China;
3. Shandong Province Key Laboratory of Water Resources and Environment, Jinan 250014, China
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| Abstract: |
| 【Objective】The Grand Canal is a complex hydraulic project in the eastern China. This paper studies the flooding and its detrimental impacts in the lowland areas of the canal.【Method】The research was conducted in the Pichang-Tanxin Plain, using multi-source remote sensing data and ground surveys to analyze flooding events. We calculated the normalized difference water body index (NDWI) and the normalized difference vegetation index (NDVI) before and after flooding to assess flood severity, impact on crop growth, as well as the efficacy of hydraulic facilities in miti-gating flooding effects.【Result】The NDVI difference between 2004 and 2005 for crops in flooded and non-flooded areas was 0.5 and 0.25, respectively, indicating floodings detrimentally affected crop growth and development. NDWI analysis from 2003 to 2017 demonstrated that the Taierzhuang Control Gate project mitigated flooding impacts on nearby farmlands. Flooding also affected crops in non-inundated regions, with lowland crops more adversely impacted than those outside lowlands. The hydraulic facilities significantly reduced economic losses caused by flooding.【Conclusion】Remote sensing is an effective tool for monitoring inundated areas and assessing the consequences of flooding on crops. The construction of hydraulic facilities plays a crucial role in reducing the detrimental effects of flooding in lowland regions of the Grand Canal. |
| Key words: depressions along the Grand Canal; flooding characteristics; NDWI; NDVI; hydraulic facilities |
