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

策略	土壤因子输入参量	评价指标	多元线性逐步回归	偏最小二乘回归	随机森林回归
1	土壤光谱反射率	R²	0.26	0.37	0.83
		RMSE/(g/kg)	2.93	2.71	1.69
		MAPE/%	22.55	20.66	13.00
2	土壤光谱反射率与纹理特征	R²	0.45	0.55	0.92
		RMSE/(g/kg)	2.53	2.30	1.30
		MAPE/%	20.53	17.90	9.74
3	土壤有机质敏感光谱指数与纹理特征	R²	0.42	0.54	0.93
		RMSE (g/kg)	2.59	2.31	1.22
		MAPE/%	20.69	17.71	9.33
4	土壤有机质和盐分敏感光谱指数与纹理特征	R²	0.42	0.61	0.93
		RMSE (g/kg)	2.60	2.12	1.26
		MAPE/%	19.59	15.75	9.55
5	土壤有机质敏感光谱指数和盐分实测值与纹理特征	R²	0.62	0.72	0.95
		RMSE/ (g/kg)	2.11	1.80	1.07
		MAPE/%	15.40	12.45	8.08

Tab. 3 Comparison of estimation accuracy of uncultivated soil organic matter with different input parameters

Other figure/table from this article

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