(Downloads - 0)
For more info about our services contact : help@bestpfe.com
Table of contents
1. APRESENTAÇÃO GERAL
2. PRESENTATION GENERAL
3. GENERAL INTRODUCTION
4. HYPOTHESES
5. GENERAL OBJECTIVES
6. CHAPTER I – BIBLIOGRAFIC REVIEW
6.1. Importance of minerals and rocks
6.2. Geology of Rio Grande do Sul
6.2.1. Escudo Sul-rio-grandense
6.2.2. Depressão Periférica
6.2.3. Planalto
6.2.4. Planície Costeira
6.3. Climate of Rio Grande do Sul
6.4. Great pedogenetic processes of southern Brazil
6.4.1. Soil weathering and formation
6.4.2. Reactions involved in the weathering of silicate
6.5. Origin and evolution of pedogenic minerals
6.5.1. Study of the weathering profile: geopedological profile
6.5.1.1. Measure of the alteration intensity
6.5.2. Alteration processes of soil clay minerals
6.5.2.1. Mineralogical modifications in the pedoenvironment
6.5.3. Soil response to Integrated Crop-Livestock Systems
6.5.3.1. Soil clay minerals in the ICLS
6.6. Final considerations
7. CHAPTER II – MINERALOGICAL ALTERATION AND SOIL FORMATION OF THE IGNEOUS ROCK IN SOUTH BRAZIL
7.1. Abstract
7.2. Introduction
7.3. Materials and Methods
7.3.1. Localization and classification of profiles
7.3.2. Characterization and environmental settings of sampled sites
7.3.2.1. Climate and lithology
7.3.2.2. Vegetation in the ecosystem context
7.3.4. Morphological Description and Sampling
7.3.5. Physical analysis
7.3.6. Chemical analysis
7.3.7. Mineralogical analysis
7.3.8. Weathering indexes
7.3.9. Microscopy
7.3.10. Fourier Transform Infrared Spectroscopy (FTIR)
7.4. Results
7.4.1. General properties of the soil
7.4.2. Chemical extractions
7.4.3. Mineralogy of the weathering profiles
7.4.3.1. Diffraction and optical microscopy
7.4.3.2. Diffraction of the clay fraction (< 2 μm)
7.4.3.3. Fourier Transform Infrared Spectroscopy (FTIR)
7.4.4. Total chemical analyses and weathering indices
7.5. Discussion
7.5.1. Evolution of the pedogenic minerals
7.5.2. Alteration intensities and weathering índices
7.5.3. Environmental relevance and soil use
7.6. Conclusions
8. CHAPTER III – IMPACT OF AN INTEGRATED NO-TILL SOYBEAN-BEEF CATTLE PRODUCTION SYSTEM ON THE OXISOL MINERALOGY IN SOUTHERN BRAZIL
8.1. Abstract
8.2. Introduction
8.3. Material and methods
8.3.1. Soil selection, sampling and sample preparation
8.3.2. Chemical analyses
8.3.3. Mineralogical analyses
8.3.4. Statistical analysis
8.4. Results
8.4.1. General soil properties
8.4.2. Clay Mineralogy and submicrometric fractionation
8.4.3. No grazing (NG)
8.4.4. Intensive grazing (IG)
8.5. Discussion
8.6. Final Considerations
8.7. Conclusions
9. GENERAL CONCLUSIONS
10. BIBLIOGRAPHIC REFERENCES
11. ANNEXES
