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The Nature and Properties of Soils, Global Edition

The Nature and Properties of Soils, Global Edition

Raymond R. Weil | Nyle C. Brady

(2016)

Additional Information

Book Details

Abstract

Developed for Introduction to Soils or Soil Science courses, The Nature and Properties of Soils, Fifteenth Edition, can be used in courses such as Soil Fertility, Land Resources, Earth Science and Soil Geography.


Help students learn about soils and their connections to the ecosystem

The Nature and Properties of Soils is designed to engage today’s students with the latest in the world of soils. This hallmark text introduces students to the exciting world of soils through clear writing, strong pedagogy, and an ecological approach that effectively explains the fundamentals of soil science. Worked calculations, vignettes, and current real-world applications prepare readers to understand concepts, solve problems, and think critically. Written for both majors and non-majors, this text highlights the many interactions between the soil and other components of forest, range, agricultural, wetland and constructed ecosystems.


Now in full-color, the Fifteenth Edition includes hundreds of compelling photos, figures, and diagrams to bring the exciting world of soils to life. Extensively revised, new and updated content appears in every chapter. Examples include: coverage of the pedosphere concept; new insights into humus and soil carbon accumulation; subaqueous soils, soil effects on human health; principles and practice of organic farming; urban and human engineered soils; new understandings of the nitrogen cycle; water-saving irrigation techniques; hydraulic redistribution, soil food-web ecology; disease suppressive soils; soil microbial genomics; soil interactions with global climate change; digital soil maps; and many others.

Table of Contents

Section Title Page Action Price
Cover Cover
Title Page 3
Copyright Page 4
Contents 7
Preface 15
1 The Soils Around Us 19
1.1 What Ecosystem Services Do Soils Perform? 20
1.2 How Do Soils Support Plant Growth? 21
1.3 How Do Soils Regulate Water Supplies? 25
1.4 How Do Soils Recycle Raw Materials? 26
1.5 How Do Soils Modify the Atmosphere? 26
1.6 What Lives in the Soil Habitat? 26
1.7 Soil as an Engineering Medium 29
1.8 The Pedosphere and the Critical Zone? 30
1.9 Soils as Natural Bodies 30
1.10 The Soil Profile and Its Layers (Horizons) 33
1.11 Topsoil and Subsoil 36
1.12 Soil—Interface of Air, Minerals, Water, and Life 38
1.13 What are the Mineral (Inorganic) Constituents of Soils? 38
1.14 The Nature of Soil Organic Matter 41
1.15 Soil Water—Dynamic and Complex 43
1.16 Soil Air: A Changing Mixture of Gases 44
1.17 How Do Soil Components Interact to Supply Nutrients to Plants? 44
1.18 How Do Plant Roots Obtain Nutrients? 46
1.19 Soil Health, Degradation, and Resilience 48
1.20 Conclusion 49
Study Questions 50
References 50
2 Formation of Soils from Parent Materials 51
2.1 Weathering of Rocks and Minerals 51
2.2 What Environmental Factors Influence Soil Formation? 59
2.3 Parent Materials 60
2.4 How Does Climate Affect Soil Formation? 73
2.5 How Do Living Organisms (Including People) Affect Soil Formation? 75
2.6 How Does Topography Affect Soil Formation? 80
2.7 How Does Time Affect Soil Formation? 83
2.8 Four Basic Processes of Soil Formation 85
2.9 The Soil Profile 88
2.10 Urban Soils 95
2.11 Conclusion 99
Study Questions 99
References 100
3 Soil Classification 101
3.1 Concept of Individual Soils 101
3.2 Soil Taxonomy: A Comprehensive Classification System 103
3.3 Categories and Nomenclature of Soil Taxonomy 110
3.4 Soil Orders 112
3.5 Entisols (Recent: Little If Any Profile Development) 114
3.6 Inceptisols (Few Diagnostic Features: Inception of B Horizon) 117
3.7 Andisols (Volcanic Ash Soils) 118
3.8 Gelisols (Permafrost and Frost Churning) 120
3.9 Histosols (Organic Soils Without Permafrost) 121
3.10 Aridisols (Dry Soils) 125
3.11 Vertisols (Dark, Swelling, and Cracking Clays) 127
3.12 Mollisols (Dark, Soft Soils of Grasslands) 130
3.13 Alfisols (Argillic or Natric Horizon, Moderately Leached) 132
3.14 Ultisols (Argillic Horizon, Highly Leached) 133
3.15 Spodosols (Acid, Sandy, Forest Soils, Highly Leached) 135
3.16 Oxisols (Oxic Horizon, Highly Weathered) 136
3.17 Lower-Level Categories in Soil Taxonomy 139
3.18 Conclusion 146
Study Questions 147
References 147
4 Soil Architecture and Physical Properties 148
4.1 Soil Color 148
4.2 Soil Texture (Size Distribution of Soil Particles) 152
4.3 Soil Textural Classes 157
4.4 Structure of Mineral Soils 162
4.5 Formation and Stabilization of Soil Aggregates 166
4.6 Tillage and Structural Management of Soils 174
4.7 Soil Density 179
4.8 Pore Space of Mineral Soils 189
4.9 Soil Properties Relevant to Engineering Uses 193
4.10 Conclusion 203
Study Questions 203
References 204
5 Soil Water: Characteristics and Behavior 206
5.1 Structure and Related Properties of Water 207
5.2 Capillary Fundamentals and Soil Water 209
5.3 Soil Water Energy Concepts 211
5.4 Soil Water Content and Soil Water Potential 217
5.5 The Flow of Liquid Water in Soil 225
5.6 Infiltration and Percolation 231
5.7 Water Vapor Movement in Soils 235
5.8 Qualitative Description of Soil Wetness 236
5.9 Factors Affecting Amount of Plant-Available Soil Water 240
5.10 Mechanisms by Which Plants are Supplied with Water 246
5.11 Conclusion 248
Study Questions 248
References 250
6 Soil and the Hydrologic Cycle 251
6.1 The Global Hydrologic Cycle 252
6.2 Fate of Incoming Water 254
6.3 The Soil–Plant–Atmosphere Continuum (SPAC) 262
6.4 Control of ET 268
6.5 Liquid Losses of Water from the Soil 273
6.6 Percolation and Groundwater 275
6.7 Enhancing Soil Drainage 280
6.8 Septic Tank Drain Fields 287
6.9 Irrigation Principles and Practices 291
6.10 Conclusion 298
Study Questions 300
References 300
7 Soil Aeration and Temperature 302
7.1 Soil Aeration—The Process 302
7.2 Means of Characterizing Soil Aeration 304
7.3 Oxidation–Reduction (Redox) Potential 306
7.4 Factors Affecting Soil Aeration and Eh 310
7.5 Ecological Effects of Soil Aeration 312
7.6 Soil Aeration in Urban Landscapes 316
7.7 Wetlands and Their Poorly Aerated Soils 319
7.8 Processes Affected by Soil Temperature 326
7.9 Absorption and Loss of Solar Energy 332
7.10 Thermal Properties of Soils 334
7.11 Soil Temperature Control 339
7.12 Conclusion 342
Study Questions 343
References 343
8 The Colloidal Fraction: Seat of Soil Chemical and Physical Activity 345
8.1 General Properties and Types of Soil Colloids 346
8.2 Fundamentals of Layer Silicate Clay Structure 350
8.3 Mineralogical Organization of Silicate Clays 352
8.4 Structural Characteristics of Nonsilicate Colloids 360
8.5 Genesis and Geographic Distribution of Soil Colloids 362
8.6 Sources of Charges on Soil Colloids 364
8.7 Adsorption of Cations and Anions 366
8.8 Cation Exchange Reactions 368
8.9 Cation Exchange Capacity (CEC) 374
8.10 Exchangeable Cations in Field Soils 380
8.11 Anion Exchange 382
8.12 Sorption of Pesticides and Groundwater Contamination 384
8.13 Binding of Biomolecules to Clay and Humus 387
8.14 Conclusion 389
Study Questions 390
References 390
9 Soil Acidity 392
9.1 What Processes Cause Soil Acidification? 393
9.2 Role of Aluminum in Soil Acidity 397
9.3 Pools of Soil Acidity 398
9.4 Buffering of pH in Soils 403
9.5 How Can We Measure Soil ph? 404
9.6 Human-Influenced Soil Acidification 408
9.7 Biological Effects of Soil pH 415
9.8 Raising Soil pH by Liming 422
9.9 Alternative Ways to Ameliorate the Ill Effects of Soil Acidity 428
9.10 Lowering Soil pH 432
9.11 Conclusion 433
Study Questions 435
References 435
10 Soils of Dry Regions: Alkalinity, Salinity, and Sodicity 438
10.1 Characteristics and Problems of Dry Region Soils 439
10.2 Causes of High Soil pH (Alkalinity) 447
10.3 Development of Salt-Affected Soils 449
10.4 Measuring Salinity and Sodicity 453
10.5 Classes of Salt-Affected Soils 456
10.6 Physical Degradation of Soil by Sodic Chemical Conditions 459
10.7 Biological Impacts of Salt-Affected Soils 462
10.8 Water-Quality Considerations for Irrigation 467
10.9 Reclamation of Saline Soils 470
10.10 Reclamation of Saline–Sodic and Sodic Soils 474
10.11 Management of Reclaimed Soils 479
10.12 Conclusion 479
Study Questions 480
References 481
11 Organisms and Ecology of the Soil 482
11.1 The Diversity of Organisms in the Soil 483
11.2 Organisms in Action 488
11.3 Abundance, Biomass, and Metabolic Activity 493
11.4 Earthworms 495
11.5 Ants and Termites 500
11.6 Soil Microanimals 504
11.7 Plant Roots 508
11.8 Soil Algae 512
11.9 Soil Fungi 512
11.10 Soil Prokaryotes: Bacteria and Archaea 520
11.11 Conditions Affecting the Growth and Activity of Soil Microorganisms 527
11.12 Beneficial Effects of Soil Organisms on Plant Communities 528
11.13 Soil Organisms and Plant Damage 530
11.14 Ecological Relationships among Soil Organisms 535
11.15 Conclusion 539
Study Questions 540
References 541
12 Soil Organic Matter 544
12.1 The Global Carbon Cycle 544
12.2 Organic Decomposition in Soils 548
12.3 Factors Controlling Rates of Residue Decomposition and Mineralization 553
12.4 Genesis and Nature of Soil Organic Matter and Humus 561
12.5 Influences of Organic Matter on Plant Growth and Soil Function 568
12.6 Amounts and Quality of Organic Matter in Soils 573
12.7 Carbon Balance in the Soil–Plant–Atmosphere System 574
12.8 Environmental Factors Influencing Soil Organic Carbon Levels 578
12.9 Soil Organic Matter Management 582
12.10 Soils and Climate Change 586
12.11 Composts and Composting 593
12.12 Conclusion 597
Study Questions 598
References 599
13 Nitrogen and Sulfur Economy of Soils 601
13.1 Influence of Nitrogen on Plant Growth and Development 602
13.2 Distribution of Nitrogen and the Nitrogen Cycle 603
13.3 Immobilization and Mineralization 605
13.4 Dissolved Organic Nitrogen 608
13.5 Ammonium Fixation by Clay Minerals 609
13.6 Ammonia Volatilization 609
13.7 Nitrification 611
13.8 Gaseous Losses by Denitrification and Anammox 614
13.9 Biological Nitrogen Fixation 619
13.10 Symbiotic Fixation with Legumes 621
13.11 Symbiotic Fixation with Nonlegumes 626
13.12 Nonsymbiotic Nitrogen Fixation 628
13.13 Nitrogen Deposition from the Atmosphere 629
13.14 The Nitrate Leaching Problem 631
13.15 Practical Management of Soil Nitrogen 635
13.16 Importance of Sulfur 643
13.17 Natural Sources of Sulfur 644
13.18 The Sulfur Cycle 649
13.19 Behavior of Sulfur Compounds in Soils 649
13.20 Sulfur Oxidation and Reduction 652
13.21 Sulfur Retention and Exchange 655
13.22 Sulfur and Soil Fertility Maintenance 656
13.23 Conclusion 657
Study Questions 657
References 658
14 Soil Phosphorus and Potassium 661
14.1 Phosphorus in Plant Nutrition and Soil Fertility 662
14.2 Effects of Phosphorus on Environmental Quality 664
14.3 The Phosphorus Cycle 670
14.4 Organic Phosphorus in Soils 675
14.5 Inorganic Phosphorus in Soils 679
14.6 Solubility of Inorganic Soil Phosphorus 682
14.7 Phosphorus-Fixation Capacity of Soils 685
14.8 Plant Strategies for Adequate Phosphorus Acquisition from Soils 690
14.9 Practical Phosphorus Management 692
14.10 Potassium: Nature and Ecological Roles 695
14.11 Potassium in Plant and Animal Nutrition 696
14.12 The Potassium Cycle 699
14.13 The Potassium Problem in Soil Fertility 701
14.14 Forms and Availability of Potassium in Soils 703
14.15 Factors Affecting Potassium Fixation in Soils 706
14.16 Practical Aspects of Potassium Management 707
14.17 Conclusion 709
Study Questions 710
References 711
15 Calcium, Magnesium, Silicon, and Trace Elements 714
15.1 Calcium as an Essential Nutrient 715
15.2 Magnesium as a Plant Nutrient 717
15.3 Silicon in Soil–Plant Ecology 721
15.4 Deficiency Versus Toxicity 726
15.5 Micronutrient Roles in Plants 728
15.6 Sources of Micronutrients 733
15.7 Factors Influencing the Availability of the Trace Element Cations 737
15.8 Organic Compounds as Chelates 742
15.9 Factors Influencing the Availability of the Trace Element Anions 746
15.10 Soil Management and Trace Element Needs 752
15.11 Conclusion 759
Study Questions 760
References 761
16 Practical Nutrient Management 763
16.1 Goals of Nutrient Management 763
16.2 Nutrients as Pollutants 767
16.3 Natural Ecosystem Nutrient Cycles 780
16.4 Recycling Nutrients Through Animal Manures 784
16.5 Industrial and Municipal By-Products 793
16.6 Practical Utilization of Organic Nutrient Sources 796
16.7 Inorganic Commercial Fertilizers 800
16.8 Fertilizer Application Methods 806
16.9 Timing of Fertilizer Application 810
16.10 Diagnostic Tools and Methods 811
16.11 Soil Analysis 816
16.12 Site-Index Approach to Phosphorus Management 822
16.13 Some Advances and Challenges in Fertilizer Management 825
16.14 Conclusion 830
Study Questions 832
References 833
17 Soil Erosion and Its Control 836
17.1 Significance of Soil Erosion and Land Degradation 837
17.2 On-Site and Off-Site impacts of Accelerated Soil Erosion 843
17.3 Mechanics of Water Erosion 846
17.4 Models to Predict the Extent of Water-Induced Erosion 849
17.5 Factors Affecting Interrill and Rill Erosion 852
17.6 Conservation Tillage 860
17.7 Vegetative Barriers 867
17.8 Control of Gully Erosion and Mass Wasting 868
17.9 Control of Accelerated Erosion on Range- and Forestland 871
17.10 Erosion and Sediment Control on Construction Sites 874
17.11 Wind Erosion: Importance and Factors Affecting It 878
17.12 Predicting and Controlling Wind Erosion 882
17.13 Tillage Erosion 885
17.14 Land Capability Classification as a Guide to Conservation 889
17.15 Progress in Soil Conservation 891
17.16 Conclusion 893
Study Questions 894
References 895
18 Soils and Chemical Pollution 897
18.1 Toxic Organic Chemicals 898
18.2 Kinds of Organic Contaminants 903
18.3 Behavior of Organic Chemicals in Soil 905
18.4 Effects of Pesticides on Soil Organisms 912
18.5 Remediation of Soils Contaminated with Organic Chemicals 914
18.6 Soil Contamination with Toxic Inorganic Substances 924
18.7 Potential Hazards of Chemicals in Sewage Sludge 930
18.8 Prevention and Remediation of Inorganic Soil Contamination 934
18.9 Landfills 937
18.10 Radionuclides in Soil 943
18.11 Radon Gas from Soils 947
18.12 Conclusion 950
Study Questions 950
References 951
19 Geographic Soils Information 954
19.1 Soil Spatial Variability in the Field 954
19.2 Techniques and Tools for Mapping Soils 959
19.3 Modern Technology for Soil Investigations 964
19.4 Remote Sensing in Soil Survey 969
19.5 Making a Soil Survey 977
19.6 Using Soil Surveys 980
19.7 Geographic Information Systems (GIS) 986
19.8 Digital Soil Maps: Properties or Polygons? 989
19.9 GIS, GPS, and Precision Agriculture 994
19.10 Conclusion 997
Study Questions 998
References 998
20 Prospects for Soil Health in the Anthropocene 1000
20.1 The Concepts of Soil Health and Soil Quality 1001
20.2 Soil Resistance and Resilience 1009
20.3 Soils and Global Ecosystem Services 1011
20.4 Using Plants to Improve Soil Health 1014
20.5 Feeding the Human Population 1017
20.6 Intensified Agriculture—the Green Revolution 1018
20.7 Impacts of Vastly Increased Ratios of People to Land 1023
20.8 Sustainable Agriculture in Developed Countries 1028
20.9 Biochar: Hype or Hope for Soil Quality? 1035
20.10 Organic Farming Systems 1037
20.11 Sustainable Agriculture Systems for Resource-Poor Farmers 1044
20.12 Conclusion 1055
Study Questions 1055
References 1056
Appendix A World Reference Base, Canadian, and Australian Soil Classification Systems 1059
Appendix B SI Units, Conversion Factors, Periodic Table of the Elements, and Plant Names 1064
Glossary of Soil Science Terms 1070
Index 1089
A 1089
B 1090
C 1090
D 1092
E 1093
F 1093
G 1094
H 1094
I 1095