Related Experiment Video
Updated: Jul 24, 2025

Capturing Flow-weighted Water and Suspended Particulates from Agricultural Canals During Drainage Events
Published on: November 7, 2017
Characterizing the 2020 summer floods in South China and effects on croplands
Xi Chen1, Jinwei Dong1, Lin Huang1
1Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China.
Abstract:
Floods occur more frequently in the context of climate change; however, flood monitoring capacity has not been well established. Here, we used a synergic mapping framework to characterize summer floods in the middle and lower reaches of the Yangtze River Plain and the effects on croplands in 2020, from both flood extent and intensity perspectives. We found that the total flood extent was 4936 km2 from July to August, and for flood intensity, 1658, 1382, and 1896 km2 of areas experienced triple, double, and single floods. A total of 2282 km2 croplands (46% of the flooded area) were inundated mainly from Poyang and Dongting Lake Basins, containing a high ratio of moderate damage croplands (47%). The newly increased flooding extent in 2020 was 29% larger than the maximum ever-flooded extent in 2015-2019. This study is expected to provide a reference for rapid regional flood disaster assessment and serving mitigation.
More Related Videos
Related Concept Videos
Responses to Drought and Flooding
What is Climate?
Design Example: Analyzing Capacity Contours for Flood Risk Assessment
Adaptations that Reduce Water Loss
Responses to Salt Stress
Applications of GIS: Disaster Management and Emergency Response

