气候变化领域集成服务门户(CCPortal): Comprehensive Assessment of NDVI Products Derived from Fengyun Satellites across China

CCPortal

DOI	10.3390/rs16081363
	Comprehensive Assessment of NDVI Products Derived from Fengyun Satellites across China
	Wang, Lei; Han, Xiuzhen; Fang, Shibo; Xiao, Fengjin
发表日期	2024
EISSN	2072-4292
起始页码	16
结束页码	8
卷号	16 期号:8
英文摘要	NDVI data are crucial for agricultural and environmental research. The Fengyun-3 (FY-3) series satellites are recognized as primary sources for retrieving NDVI products on a global scale. To apply FY-3 NDVI data for long-term studies, such as climate change, this study conducted a thorough evaluation to detect the potentials of the FY-3B and FY-3D satellites for generating a long time series NDVI dataset. For this purpose, the spatiotemporal consistency between the FY-3B and FY-3D satellites was evaluated, and their performances were compared. Then, a grey relational analysis (GRA) method was applied to detect the factors influencing the consistency among the different satellites, and a gradient boosting regression (GBR) model was constructed to create a long-term FY-3 NDVI product. The results indicate an overall high consistency between the FY-3B and FY-3D NDVIs, suggesting that they could be used as complementary datasets for generating a long-term NDVI dataset. The correlations between the FY-3D NDVI and the MODIS NDVI, as well as the leaf area index (LAI) measurements, were both higher than those of FY-3B, which indicates a better performance of FY-3D in retrieving NDVI data. The grey correlation degrees between the NDVI differences and four parameters, which were land cover (LC), DEM, latitude (LAT) and longitude (LON), were calculated, revealing that the LC was the most related to the NDVI differences. Finally, a GBR model with FY-3B NDVI, LC, DEM, LAT and LON as the input variables and FY-3D NDVI as the target variable was established and achieved a robust performance. The R values between the GBR-estimated NDVI and FY-3D NDVI reached 0.947, 0.867 and 0.829 in the training, testing and validation datasets, respectively, indicating the feasibility of the established model for generating long time series NDVI data by combining data from the FY-3B and FY-3D satellites.
英文关键词	Fengyun satellites; NDVI product; assessment; long term; grey relational analysis; gradient boosting regression
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS记录号	WOS:001210899300001
来源期刊	REMOTE SENSING
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/304183
作者单位	China Meteorological Administration; China Meteorological Administration; Chinese Academy of Meteorological Sciences (CAMS)
推荐引用方式 GB/T 7714	Wang, Lei,Han, Xiuzhen,Fang, Shibo,et al. Comprehensive Assessment of NDVI Products Derived from Fengyun Satellites across China[J],2024,16(8).
APA	Wang, Lei,Han, Xiuzhen,Fang, Shibo,&Xiao, Fengjin.(2024).Comprehensive Assessment of NDVI Products Derived from Fengyun Satellites across China.REMOTE SENSING,16(8).
MLA	Wang, Lei,et al."Comprehensive Assessment of NDVI Products Derived from Fengyun Satellites across China".REMOTE SENSING 16.8(2024).