首页|Monitoring Surface Water Change in Northeast China in 1999-2020:Evidence from Satellite Observation and Refined Classification

Monitoring Surface Water Change in Northeast China in 1999-2020:Evidence from Satellite Observation and Refined Classification

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As a typical region with high water demand for agricultural production,understanding the spatiotemporal surface water changes in Northeast China is critical for water resources management and sustainable development.However,the long-term variation characteristics of surface water of different water body types in Northeast China remain rarely explored.This study investigated how surface water bodies of different types(e.g.,lake,reservoir,river,coastal aquaculture,marsh wetland,ephemeral water)changed during 1999-2020 in Northeast China based on various remote sensing-based datasets.The results showed that surface water in Northeast China grew dramatically in the past two decades,with an equivalent area increasing from 24 394 km2 in 1999 to 34 595 km2 in 2020.The surge of ephemeral water is the primary driver of surface water expansion,which could ascribe to shifted precipitation pattern.Marsh wetlands,rivers,and reservoirs experienced a similar trend,with an approximate 20％increase at the interdecadal scale.By con-trast,coastal aquacultures and natural lakes remain relatively stable.This study is expected to provide a more comprehensive investiga-tion of the surface water variability in Northeast China and has important practical significance for the scientific management of differ-ent types of surface water.

surface waterspatiotemporal variationwater body classificationremote sensingNortheast China

LIU Kai、ZHANG Dapeng、CHEN Tan、CUI Peipei、FAN Chenyu、SONG Chunqiao

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Key Laboratory of Watershed Geographic Sciences,Nanjing Institute of Geography and Limnology,Chinese Academy of Sciences,Nanjing 210008,China

University of Chinese Academy of Sciences,Nanjing(UCASNJ),Nanjing 211135,China

Geographic In-formation and Tourism College,Chuzhou University,Chuzhou 239000,China

Strategic Priority Research Program of the Chinese Academy of SciencesStrategic Priority Research Program of the Chinese Academy of SciencesNational Key Research and Development Program of ChinaProject of China Geological SurveyExcellent Scientific Research and Innovation Team of Universities in Anhui Province

XDA28020503XDA231001022019YFA0607101DD202305052023AH010071

2024

10.1007/s11769-024-1411-3

中国地理科学(英文版)
中国科学院长春地理研究所

中国地理科学(英文版)

CSTPCD
影响因子：0.754
ISSN：1002-0063
年,卷(期)：2024.34(1)
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