| 摘要 | 第1-8页 |
| ABSTRACT | 第8-15页 |
| Chapter 1 Introduction | 第15-36页 |
| ·Background of hyperspectral remote sensing and principle | 第16-19页 |
| ·Definitions of reflectance, transmittance, and absorbance | 第16页 |
| ·Physics principle of crops spectrum diagnosis | 第16-17页 |
| ·Crop basic principle of hyperspectral remote sensing | 第17-19页 |
| ·Precision agriculture | 第19-21页 |
| ·Nitrogen and remote sensing for corn crop | 第21-26页 |
| ·Importance of Nitrogen | 第21-22页 |
| ·Nitrogen and its leaf spectral properties | 第22-25页 |
| ·Nitrogen and their relationship with spectral indices | 第25-26页 |
| ·Application of vegetation indices, soil background resistance indices and derivative spectroscopy | 第26-28页 |
| ·Chlorophyll and its importance with leaf reflectance properties | 第28-31页 |
| 1. 5.1. Importance of chlorophyll | 第28页 |
| ·Spectral chlorophyll and its relationship with nitrogen | 第28-29页 |
| ·Chlorophyll and its relationship with hyperspectral remote sensing and vegetation indices | 第29-31页 |
| ·Leaf area index and reflectance characteristic of corn crop | 第31-34页 |
| ·Importance of leaf area index (LAI) | 第31-32页 |
| ·LAI and their relationship with spectral indices | 第32-33页 |
| ·Growth stage and canopy geometry | 第33-34页 |
| ·Ground cover and the soil background | 第34页 |
| ·Objective of the study | 第34-36页 |
| ·For determining leaf N contents | 第35页 |
| ·For determining leaf chlorophyll contents | 第35页 |
| ·For determining leaf area index (LAI) | 第35-36页 |
| Chapter 2 Material and methods | 第36-51页 |
| ·Remote estimation of crop nitrogen contents by using hyperspectral vegetation indices of summer corn under rain-fed condition | 第36-41页 |
| ·Site description and detail of experiment | 第36-37页 |
| ·Fields measurements and data collection | 第37-40页 |
| ·Statistical analysis and calculation of spectral vegetation Indices | 第40-41页 |
| ·Hyperspectral remote estimation of leaf total nitrogen by using derivative spectroscopy, their parameters and red edge inflection point (REIP) | 第41-44页 |
| ·Site description and detail of experiment | 第41页 |
| ·Spectral features parametric selection | 第41-44页 |
| ·Statistical analysis and linear and non-linear model fitting | 第44页 |
| ·Improved new vegetation indices for remote estimation of leaf chlorophyll contents and grain yield of summer corn | 第44-46页 |
| ·Site description and detail of experiments | 第44页 |
| ·Leaf chlorophyll content | 第44-45页 |
| ·Calculations and statistical analysis | 第45-46页 |
| ·Improved new vegetation indices for remote estimation of leaf area index of summer corn | 第46-51页 |
| ·Site description and detail of experiments | 第46-47页 |
| ·Measuring leaf area index | 第47页 |
| ·Calculations and statistical analysis | 第47页 |
| ·Hyperspectral Vegetation indices used in this study | 第47-51页 |
| Chapter 3 Remote estimation of crop nitrogen contents by using hyperspectral vegetation indices of summer corn under rainfed condition | 第51-69页 |
| ·Leaf nitrogen contents under different N rates | 第51-52页 |
| ·Leaf hyperspectral reflectance spectra under different N rates | 第52-54页 |
| ·Relationship of leaf N contents to leaf spectral reflectance of single wavelengths | 第54页 |
| ·Relationship of leaf N contents to leaf spectral reflectance of single log wavelengths | 第54-56页 |
| ·Relationship of leaf N contents to leaf spectral reflectance of dual wavelength | 第56-57页 |
| ·Relationship between leaf N contents to leaf spectral reflectance of dual log wavelengths | 第57-59页 |
| ·Relationship of leaf N contents to spectral vegetation indices (SVIs) | 第59-62页 |
| ·Leaf N content prediction models | 第62-65页 |
| ·Discussions | 第65-69页 |
| Chapter 4 Hyperspectral remote estimation of leaf total nitrogen by using derivative spectroscopy, their parameters and red edge inflection point (REIP) | 第69-83页 |
| ·Leaf nitrogen contents under different N rates | 第69页 |
| ·Leaf hyperspectral reflectance spectra under different N rates | 第69页 |
| ·Correlation coefficient between leaf N contents and first order derivative reflectance spectra | 第69-70页 |
| ·Relationship between spectral reflectance and nitrogen content at different growth stages | 第70-71页 |
| ·Regression model fitting for leaf N contents and leaf spectral characteristics at different growth stages | 第71-74页 |
| ·Accuracy test for remote estimation model of leaf nitrogen contents | 第74-77页 |
| ·Discussion | 第77-83页 |
| Chapter 5 Improved new vegetation indices for remote estimation of leaf chlorophyll contents and grain yield of summer corn | 第83-96页 |
| ·Leaf chlorophyll contents under different nitrogen rate application | 第83-84页 |
| ·Relationship between leaf N contents and spectral reflectance | 第84页 |
| ·Relationship between leaf chlorophyll content and spectral reflectance | 第84-87页 |
| ·Relationship between leaf chlorophyll content and grain yield | 第87-88页 |
| ·Relationship between leaf chlorophyll content and spectral indices | 第88-90页 |
| ·The best suited indices with their predictive model for remote estimation of leaf chlorophyll content | 第90页 |
| ·Used of new bands to develop new spectral index and its validation | 第90-93页 |
| ·Discussions | 第93-96页 |
| Chapter 6 Improved new vegetation indices for remote estimation of leaf area index of mmer corn | 第96-104页 |
| ·Leaf area index under different nitrogen rate application at different growth stages82 | 第96页 |
| ·Leaf spectral reflectance and LAI determination | 第96-97页 |
| ·Relationship between Leaf spectral indices and LAI | 第97-100页 |
| ·Discussion | 第100-104页 |
| References | 第104-113页 |
| Acknowledgment | 第113-115页 |
| Dedication | 第115-116页 |
| 附件 | 第116页 |
