Forest status assessment in China with SDG indicators based on high-resolution satellite data

查看全文 作　　者：Xiaomei [1]Zhang;Guojin [1,2]He;Shijie [1]Yan;Tengfei [1]Long;Xueli [1,3]Peng;Zhaoming [1]Zhang;Guizhou [1]Wang

机构地区：[1]China Remote Sensing Satellite Ground Station,Aerospace Information Research Institute,Chinese Academy of Sciences,Beijing,People’s Republic of China;[2]School of Electrical and Communication Engineering,University of Chinese Academy of Sciences,Beijing,100049,People’s Republic of China;[3]College of Resources and Environment,University of Chinese Academy of Sciences,Beijing,100049,People’s Republic of China

出　　处：《International Journal of Digital Earth》索引2023年第16卷第1期,共14页

基　　金：supported by the Strategic Priority Research Program of the Chinese Academy of Sciences(XDA 19090300,XDA 19090124);the National Natural Science Foundation of China(61731022);the Second Tibetan Plateau Scientific Expedition and Research Program(2019QZKK030701);Chinese Academy of Sciences Net-work Security and Informatization Special Project(CAS-WX2021PY-0107-01). 摘　　要：To assess the status and change trend of forest in China,an indicator framework was developed using SDG sub-indicators.In this paper,we propose an improved methodology and a set of workflows for calculating SDG indicators.The main modification include the use of moderate and high spatial resolution satellite data,as well as state-of-the-art machine learning techniques for forest cover classification and estimation of forest above-ground biomass(AGB).This research employs GF-1 and GF-2 data with enhanced texture information to map forest cover,while time series Landsat data is used to estimate forest AGB across the whole territory of China.The study calculate two SDG sub-indicators:SDG_(15.1.1) for forest area and SDG_(15.2.1) for sustainable forest management.The evaluation results showed that the total forest area in China was approximately 219 million hectares at the end of 2021,accounting for about 23.51%of the land area.The average annual forest AGB from 2015 to 2021 was estimated to be 105.01Mg/ha,and the overall trend of forest AGB change in China was positive,albeit with some spatial differences. 关键词：Remote sensing sustainability forest status assessment SDG_(15.1.1) SDG_(15.2.1)

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Forest status assessment in China with SDG indicators based on high-resolution satellite data

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