Study on Nutrient Content of Bothriochloa Ischaemum Community in the Loess Hilly-Gully Region Based on Spectral Characteristics
文献类型：期刊论文
| 作者 | Wang Shao-yan2; Chen Zhi-fei3; Luo Yang2; Jian Chun-xia2; Zhou Jun-jie4; Jin Yuan2; Xu Pei-dan4; Lei Si-yue4; Xu Bing-cheng1,2 |
| 刊名 | SPECTROSCOPY AND SPECTRAL ANALYSIS
 |
| 出版日期 | 2023-05-01 |
| 卷号 | 43期号:5页码:1612-1621 |
| ISSN号 | 1000-0593 |
| 关键词 | First derivative Red edge parameters Vegetation index Stepwise regression N and P addition |
| DOI | 10.3964/j.issn.1000-0593(2023)05-1612-10 |
| 通讯作者 | Xu Bing-cheng(Bexu@nwsuaf.edu.cn) |
| 英文摘要 | Exploring the relationship between spectral characteristics and nutrient content of the grassland communities is of great significance for promoting the application of rapid non-destructive testing technology in grassland fertilization management, which can be used to diagnose the nutritional status of the grassland communities by hyperspectral technology. A typical grassland community in the Loess Hilly-gully region on the Loess Plateau, Bothriochloa ischaemum community, was investigated with treatments of four nitrogen (N) addition (0, 25, 50, and 100 kg center dot N center dot ha(-1) center dot yr(-1)) and four phosphorus (P) addition treatments (0, 20, 40, and 80 P2O5 center dot kg center dot ha(-1) center dot yr(-1)). Based on hyperspectral and community N and P nutrient content measurements, combined with the first derivative treatment in the red-edge region, 18 characteristicspectral parameters consisting of vegetation indexes, characteristic bands and red-edge parameters, the characteristicspectral parameters sensitive to the N and P content and N : P ratio of B. ischaemum community were screened by multiple linear stepwise regression (SWR) methods, and an inverse model was established to estimate the aboveground total N content and total P content and N : P ratio in the community. Results showed that the N and P content of the B. ischaemum community increased with N application, and the N : P ratio decreased with P application; the spectral reflectance under N and P addition is inversely proportional to fertilizer application in the visible band and positively proportional to fertilizer application in the near-infrared band, and the "double-peak phenomenon" of the first derivative in the red-edge region was significantly affected by N and P addition. Among them, TBSI, R-910 and AMP contributed significantly to the model for N estimation (R-2 =0. 87, F=18. 8* * *), while DVI, mSR705, R-430, R-660 and AMP contributed significantly to the model for P estimation (R-2 =0. 91, F=20. 51* * *), and Slope725 contributed the most to the model for the estimation of N : P ratio (R-2 = 0. 54, F= 5. 14* * *). This study used hyperspectral technology to achieve a rapid estimation of the N and P content of the B. ischaemum community, and based on the significant correlation between N and P content and N : P ratio and spectral feature parameters, the parameter combination with the highest accuracy was selected, which laid a foundation for the method and parameter selection of monitoring grassland nutrient content after N and P addition at large scale. |
| WOS关键词 | CANOPY NITROGEN ; PIGMENT CONTENT ; CARBON ; RATIO |
| WOS研究方向 | Spectroscopy |
| 语种 | 英语 |
| 出版者 | OFFICE SPECTROSCOPY & SPECTRAL ANALYSIS |
| WOS记录号 | WOS:001027826000038 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/196045]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Xu Bing-cheng |
| 作者单位 | 1.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 2.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 3.Guizhou Univ, Coll Life Sci, Guiyang 550025, Peoples R China 4.Northwest A&F Univ, Coll Grassland Agr, Yangling 712100, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang Shao-yan,Chen Zhi-fei,Luo Yang,et al. Study on Nutrient Content of Bothriochloa Ischaemum Community in the Loess Hilly-Gully Region Based on Spectral Characteristics[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS,2023,43(5):1612-1621. |
| APA | Wang Shao-yan.,Chen Zhi-fei.,Luo Yang.,Jian Chun-xia.,Zhou Jun-jie.,...&Xu Bing-cheng.(2023).Study on Nutrient Content of Bothriochloa Ischaemum Community in the Loess Hilly-Gully Region Based on Spectral Characteristics.SPECTROSCOPY AND SPECTRAL ANALYSIS,43(5),1612-1621. |
| MLA | Wang Shao-yan,et al."Study on Nutrient Content of Bothriochloa Ischaemum Community in the Loess Hilly-Gully Region Based on Spectral Characteristics".SPECTROSCOPY AND SPECTRAL ANALYSIS 43.5(2023):1612-1621. |
入库方式： OAI收割
来源：地理科学与资源研究所
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