Characterizing the 2020 summer floods in South China and effects on croplands

被引：5

作者：

Chen, Xi ^{[1
]}

Dong, Jinwei ^{[1
]}

Huang, Lin ^{[1
]}

Chen, Lajiao ^{[2
]}

Li, Zhichao ^{[1
]}

You, Nanshan ^{[1
]}

Singha, Mrinal ^{[1
]}

Tao, Fulu ^{[1
,3
,4
]}

机构：

[1] Chinese Acad Sci, Key Lab Land Surface Pattern & Simulat, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China

[2] Chinese Acad Sci, Aerosp Informat Res Inst, Beijing 100094, Peoples R China

[3] Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China

[4] Nat Resources Inst Finland Luke, Helsinki 00790, Finland

来源：

ISCIENCE | 2023年 / 26卷 / 07期

基金：

中国国家自然科学基金;

关键词：

WATER INDEX; INUNDATION; SENTINEL-1; IMAGES; RISK; UNCERTAINTY; FRAMEWORK; SYSTEM; MODEL;

D O I：

10.1016/j.isci.2023.107096

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Floods occur more frequently in the context of climate change; however, flood monitoring capacity has not been well established. Here, we used a synergic map-ping 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 km(2) from July to August, and for flood intensity, 1658, 1382, and 1896 km(2) of areas experienced triple, double, and single floods. A total of 2282 km(2) 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.

引用

页数：22

共 85 条

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