气候变化领域集成服务门户(CCPortal): Spatio-temporal change monitoring for surface water on the Qinghai-Tibet Plateau from 1990 to 2020 using remote sensing

CCPortal

DOI	10.3389/feart.2023.1124425
	Spatio-temporal change monitoring for surface water on the Qinghai-Tibet Plateau from 1990 to 2020 using remote sensing
	Sui, Tianbo; Ye, Chengming; Tang, Rong; Wei, Ruilong
发表日期	2023
EISSN	2296-6463
卷号	11
英文摘要	Detecting and analyzing changes of water resources is critical for human survival and societal development in the Qinghai Tibet Plateau (QTP). We implemented the cosine similarity method to complete the migration of samples and achieve a more accurate random forest classifier (mean Kappa = 0.872) for each period. Based on these classifiers and 45,370 Landsat images, we estimated the surface water distribution of the QTP for six periods between 1990 and 2020 based on the Google Earth Engine platform. The results indicate that the QTP has a surface water area of 57,229 +/- 3,248 km(2) (1990-1995), 58,444 +/- 3,248 km(2) (1996-2000), 67,319 +/- 3,704 km(2) (2001-2005), 67,399 +/- 2,798 km(2) (2006-2010), 70,286 +/- 3,033 km(2) (2011-2015), 75,176 +/- 2,785 km(2) (2016-2020), that the area of water rose by ap-proximately 31.3% and continued to increase. The area of permanent water remained constant between 1990 and 2020 at 47,280 km(2). On the QTP, the change in water area can be split into four regions: rapid increase (Qiangtang Plateau), slow increase (eastern basins), decrease (northern and northeastern basins), and relatively stable (southern basins). About 186,408 km(2) area of land is significantly losing water bodies, while about 589,567 km(2) area of land is significantly gaining water bodies. This study provides higher accuracy temporal distribution data of water bodies in the Qinghai-Tibet Plateau, and quantitatively evaluates the area changes of water bodies from multiple spatial scales. Research provides an important scientific reference for hydrological research and effective management of water resources in important rivers in the QTP.
关键词	remote sensing water classification Qinghai-Tibet Plateau random forest google earth engine
英文关键词	STORAGE CHANGES; CLIMATE-CHANGE; LAKE CHANGES; INDEX NDWI; EXTRACTION; LEVEL
WOS研究方向	Geosciences, Multidisciplinary
WOS记录号	WOS:000958281200001
来源期刊	FRONTIERS IN EARTH SCIENCE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/282783
作者单位	Chengdu University of Technology
推荐引用方式 GB/T 7714	Sui, Tianbo,Ye, Chengming,Tang, Rong,et al. Spatio-temporal change monitoring for surface water on the Qinghai-Tibet Plateau from 1990 to 2020 using remote sensing[J],2023,11.
APA	Sui, Tianbo,Ye, Chengming,Tang, Rong,&Wei, Ruilong.(2023).Spatio-temporal change monitoring for surface water on the Qinghai-Tibet Plateau from 1990 to 2020 using remote sensing.FRONTIERS IN EARTH SCIENCE,11.
MLA	Sui, Tianbo,et al."Spatio-temporal change monitoring for surface water on the Qinghai-Tibet Plateau from 1990 to 2020 using remote sensing".FRONTIERS IN EARTH SCIENCE 11(2023).