A Mid-Infrared Spectral Inversion Model for Total Nitrogen Content of Farmland Soil in Southern Xinjiang

Zi-jin BAI; Jie PENG; De-fang LUO; Hai-hui CAI; Wen-jun JI; Zhou SHI; Wei-yang LIU; Cai-yun YIN

doi:10.3964/j.issn.1000-0593(2022)09-2768-06

Spectroscopy and Spectral Analysis, Volume. 42, Issue 9, 2768(2022)

A Mid-Infrared Spectral Inversion Model for Total Nitrogen Content of Farmland Soil in Southern Xinjiang

Zi-jin BAI1,*... Jie PENG1,1; *;, De-fang LUO1,1;, Hai-hui CAI1,1;, Wen-jun JI2,2;, Zhou SHI3,3;, Wei-yang LIU1,1; and Cai-yun YIN1,1; |Show fewer author(s)

Author Affiliations

¹1. College of Agriculture, Tarim University, Alar 843300, China

²2. College of Land Science and Technology, China Agricultural University, Beijing 100083, China

³3. College of Environment and Resources, Zhejiang University, Hangzhou 310058, China

show less

Abstract Get PDF(in Chinese)

Figures & Tables(4)

Fig. 1. Mid-infrared spectral reflectance characteristics of soil samples with different total nitrogen contents

Download full size

View in Article

Fig. 2. Correlation analysis of soil total nitrogen content and mid-infrared spectral data

Download full size

View in Article

Table 1. Statistical results of total nitrogen content in soil samples
View table
View in Article
Table 1. Statistical results of total nitrogen content in soil samples
样本集数目最小值/(g·kg^-1) 最大值/(g·kg^-1) 平均值/(g·kg^-1) 标准差/(g·kg^-1) 变异系数/%
建模集 164 0.07 1.66 0.68 0.28 41
预测集 82 0.17 1.50 0.68 0.27 40
总体 246 0.07 1.66 0.68 0.28 41

Table 2. Accuracy comparison of different models for soil total nitrogen content

View table

View in Article

Table 2. Accuracy comparison of different models for soil total nitrogen content

建模因子	模型	建模集				预测集
建模因子	模型	R²	RMSE	RPD	RPIQ	R²	RMSE	RPD	RPIQ
全波段	PLSR	0.79	0.13	2.17	3.22	0.77	0.13	2.08	3.30
	SVM	0.82	0.12	2.26	3.36	0.73	0.15	1.86	2.88
	RF	0.77	0.14	2.12	2.92	0.75	0.13	2.09	3.24
	BPNN	0.81	0.12	2.31	3.43	0.75	0.12	2.12	3.28
PCA	PLSR	0.76	0.14	2.06	3.06	0.72	0.15	1.84	2.85
	SVM	0.81	0.12	2.24	3.33	0.75	0.14	1.95	3.01
	RF	0.75	0.12	2.14	3.37	0.74	0.15	2.05	3.03
	BPNN	0.84	0.11	2.49	3.70	0.78	0.12	2.33	3.54
SPA	PLSR	0.75	0.14	2.00	2.98	0.57	0.18	1.50	2.31
	SVM	0.69	0.16	1.69	2.52	0.51	0.20	1.39	2.15
	RF	0.74	0.14	2.02	2.96	0.71	0.16	1.77	2.68
	BPNN	0.89	0.10	2.75	4.10	0.76	0.13	2.18	3.41

Tools

Get Citation

Copy Citation Text

Zi-jin BAI, Jie PENG, De-fang LUO, Hai-hui CAI, Wen-jun JI, Zhou SHI, Wei-yang LIU, Cai-yun YIN. A Mid-Infrared Spectral Inversion Model for Total Nitrogen Content of Farmland Soil in Southern Xinjiang[J]. Spectroscopy and Spectral Analysis, 2022, 42(9): 2768

Download Citation

EndNote(RIS)BibTex Plain Text

Set citation alerts for article

Save article for my favorites