Application of satellite remote sensing for ecological monitoring in river and lake recovery
WANG Xu
LI Jing
CHEN Deqing
Abstract：Recent years,river and lake ecology in China has been improved by implementing measures of water supply to river and lake and action of mother river restoration.In order to assess the effectiveness of ecological recovery of river and lake in the water receiving area,an integrated monitoring and perception network of"air-space-earth-water-engineering"has been built on the basis of traditional ground station networks.Application of multi-source satellite remote sensing technology shall effectively enhance the capability of river and lake ecological monitoring.Based on a series of multi-source data of high-resolution,environmental and resources,we specified the process of image data source selection,image pre-processing,water body extraction and data archiving.Technical challenges related to timeliness and correlation between water surface area and water level were analyzed with proposal of solutions.High frequency dynamic monitoring can be realized to key indicators including water surface area,length of flowing river,duration of flowing river and water head position.Typical cases such as control of groundwater over-exploitation and ecological water supply in North China Region,recovery of Beijing-Hangzhou Grand Canal,flowing of the Yongding River throughout the year and flowing of the entire mainstream of the Xiliao River objectively may reflect the status and dynamic changes of river and lake eco-environment,and provide complete,timely,and accurate information and technical support for effectiveness evaluation of river and lake recovery.
Keywords：satellite remote sensingriver and lake recoverymonitoringwater surface arealength of flowing river
Publication Date：2025-04-12
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 55-62 )