气候变化领域集成服务门户(CCPortal): Very Rapid Forest Cover Change in Sichuan Province, China: 40 Years of Change Using Images From Declassified Spy Satellites and Landsat

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DOI	10.1109/JSTARS.2021.3121260
	Very Rapid Forest Cover Change in Sichuan Province, China: 40 Years of Change Using Images From Declassified Spy Satellites and Landsat
	Song, Dan-Xia; Huang, Chengquan; He, Tao; Feng, Min; Li, Ainong; Li, Sike; Pang, Yong; Wu, Hao; Shariff, Abdul Rashid Mohamed; Townshend, John
通讯作者	Song, DX (通讯作者)
发表日期	2021
ISSN	1939-1404
EISSN	2151-1535
起始页码	10964
结束页码	10976
卷号	14
英文摘要	Forests have significant impacts on the global carbon cycle, hydrological processes, and biodiversity. Driven by socioeconomic developments, forests experienced drastic changes since the mid-20th century in China. Although declassified spy satellite and other Earth observation satellite data offer remote sensing technologies for mapping these long-term changes, challenges remain unsolved for applications of large volumes of historical data. This study uses long-term satellite observations, including declassified satellite data in the 1960s and Landsat products since the 1970s to monitor the decadal changes. A semi-automated method was developed for the rapid registration of declassified images with reference to Landsat data. The method was applied to quantify the forest cover (FC) in Sichuan Province (excluding Chongqing), China. Combined with a Landsat-based FC change product, it revealed that the FC in Sichuan declined rapidly by 38% from the 1960s to 2005. The FC was estimated to be 45.19 +/- 1.62% in the 1960s and 38.98 +/- 2.06% in 1975, but it rapidly decreased to 28.91 +/- 2.07% in 1990 and 27.87 +/- 2.14% by 2005. Supplemented with the official statistics, the FC in Sichuan was reported to increase to 38.03% by 2018. Although differences between the remote sensing-based estimates and the statistics were observed, they highlight the challenges in reconstructing historical land use changes for carbon and other studies. The drastic loss of forests before 1990 and the stabilizing afterward reflects the changes in forest policies, which transitioned from serving timber products to forest conservations.
关键词	ESTIMATING AREA ACCURACY SCALE VEGETATION REFORM WORLD
英文关键词	Forestry; Remote sensing; Earth; Artificial satellites; Corona; Satellites; Satellite broadcasting; Declassified spy satellite (DSS); forest cover change (FCC); image registration; landsat
语种	英语
WOS研究方向	Engineering ; Physical Geography ; Remote Sensing ; Imaging Science & Photographic Technology
WOS类目	Engineering, Electrical & Electronic ; Geography, Physical ; Remote Sensing ; Imaging Science & Photographic Technology
WOS记录号	WOS:000716698800007
来源期刊	IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260524
推荐引用方式 GB/T 7714	Song, Dan-Xia,Huang, Chengquan,He, Tao,et al. Very Rapid Forest Cover Change in Sichuan Province, China: 40 Years of Change Using Images From Declassified Spy Satellites and Landsat[J]. 中国科学院青藏高原研究所,2021,14.
APA	Song, Dan-Xia.,Huang, Chengquan.,He, Tao.,Feng, Min.,Li, Ainong.,...&Townshend, John.(2021).Very Rapid Forest Cover Change in Sichuan Province, China: 40 Years of Change Using Images From Declassified Spy Satellites and Landsat.IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING,14.
MLA	Song, Dan-Xia,et al."Very Rapid Forest Cover Change in Sichuan Province, China: 40 Years of Change Using Images From Declassified Spy Satellites and Landsat".IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING 14(2021).