Journal of Geo-information Science

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Study on Retrieval Method of Soil Organic Matter in Salinity Soil Using Unmanned Aerial Vehicle Remote Sensing

WANG Weiying, PENG Jinbang, ZHU Wanxue, YANG Bin, LIU Zhen, GONG Huarui, WANG Jundong, YANG Ting, LOU Jinyong, SUN Zhigang

Journal of Geo-information Science, 2024, 26(3): 736-752. DOI: 10.12082/dqxxkx.2024.230267

	光谱指数	r	p
有机质敏感光谱指数	D43	0.51	1.32E-04
	D45	-0.54	3.32E-05
	D53	0.59	3.33E-06
	D64	0.57	1.11E-05
	R34	-0.63	6.49E-07
	R52	0.60	3.04E-06
	R53	0.72	2.08E-09
	R61	0.53	6.22E-05
	T_b1	0.48	3.21E-04
	T_b3	0.49	2.35E-04
盐分敏感光谱指数	R13	-0.35	9.84E-03
盐分敏感光谱指数	NDD12	-0.37	6.73E-03

Tab. 2 Selected spectral indices (with their corresponding correlation coefficients and signiciant values) sensitive to soil organic matter and salinity in cultivated soil

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Fig. 1 Flowchart of soil organic matter content inversion in saline-alkali land using Unmanned Aerial Vehicle (UAV)-based multi-spectral remote sensing
Fig. 2 Distribution of experimental fields for UAV flight missions and soil sampling points
Fig. 3 Location distribution of soil sampling plot in the UAV remote sensing images
Fig. 4 Soil organic matter and salt content and reflectance of corresponding band under different organic matter and salt content
Fig. 5 Correlations between spectral reflectance and texture characteristics of uncultivated soil and cultivated soil
Tab. 1 Selected spectral indices (with their corresponding correlation coefficients and signiciant values) sensitive to soil organic matter and salinity in uncultivated soil
Tab. 3 Comparison of estimation accuracy of uncultivated soil organic matter with different input parameters
Fig. 6 Estimation results of organic matter in uncultivated soil based on spectral and texture characteristics
Fig. 7 Estimation results of soil organic matter in uncultivated soil based on spectral texture characteristics and salt information
Tab. 4 Comparison of estimation accuracy of cultivated soil organic matter with different input parameters
Fig. 8 Estimation results of organic matter in cultivated soil based on spectral and texture characteristics
Fig. 9 Estimation results of soil organic matter in cultivated soil based on spectral texture characteristics and salt information

模态框（Modal）标题

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