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Grasslands of the World.pdf - Disasters and Conflicts - UNEP

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Natural grassl<strong>and</strong> dynamics 198<br />

Fertilizing Campos grassl<strong>and</strong> 199<br />

Fertilization in Argentina 199<br />

Fertilization <strong>of</strong> Campos <strong>Grassl<strong>and</strong>s</strong> in Uruguay 200<br />

Fertilization <strong>of</strong> natural grassl<strong>and</strong>s in sou<strong>the</strong>ast Brazil 202<br />

Structural changes on fertilized natural grassl<strong>and</strong>s in SE Brazil 203<br />

Improvement techniques 205<br />

Over-seeding 205<br />

Legume introduction 206<br />

Sward preparation for seeding 207<br />

Legumes for improvement 207<br />

Stock management 209<br />

Research <strong>and</strong> development priorities 209<br />

Ecological grassl<strong>and</strong> management for maintaining productivity 210<br />

References 212<br />

Chapter 6 – <strong>Grassl<strong>and</strong>s</strong> <strong>of</strong> central North America<br />

Rex D. Pieper<br />

221<br />

Introduction 221<br />

Location <strong>and</strong> general description <strong>of</strong> <strong>the</strong> region 222<br />

Climate 225<br />

Topography <strong>and</strong> soils 226<br />

Fauna 227<br />

Vegetation patterns 230<br />

Primary production 234<br />

Pastoral <strong>and</strong> Agricultural Systems 236<br />

Crop production 236<br />

Grazing management 237<br />

Balancing seasonal variations <strong>of</strong> forage supply 240<br />

Grazing systems 241<br />

Intensification? 242<br />

Rangel<strong>and</strong> burning 244<br />

Development <strong>of</strong> grassl<strong>and</strong>s 244<br />

Current status <strong>of</strong> grassl<strong>and</strong> research <strong>and</strong> management 246<br />

Future <strong>of</strong> <strong>the</strong> Great Plains 251<br />

References 251<br />

Chapter 7 – Grazing management in Mongolia<br />

J.M. Suttie<br />

265<br />

Introduction 265<br />

Changes in administrative systems in <strong>the</strong> twentieth century 273<br />

vii

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