Vegetation of the Earth and Ecological Systems of the Geobiosphere

  • Heinrich Walter

Part of the Heidelberg Science Library book series (HSL)

Table of contents

  1. Front Matter
    Pages i-xx
  2. Introduction: The Classification of Ecological Systems

  3. General Section

    1. Heinrich Walter
      Pages 22-41
  4. Zonobiome of the Equatorial Diurnal Climate With Evergreen Tropical Rain Forest

  5. Semievergreen Forest

    1. Front Matter
      Pages 68-71
  6. Climatic Savannas

    1. Front Matter
      Pages 91-95
    2. Heinrich Walter
      Pages 96-130
  7. Semidesert

    1. Front Matter
      Pages 131-132
    2. Heinrich Walter
      Pages 163-188
  8. Forest-Steppe

    1. Front Matter
      Pages 189-192
    2. Heinrich Walter
      Pages 193-226
  9. Boreonemoral Zone

    1. Front Matter
      Pages 227-229
    2. Heinrich Walter
      Pages 230-244
  10. Forest Tundra

    1. Front Matter
      Pages 245-246
    2. Heinrich Walter
      Pages 247-253
  11. Summary

    1. Heinrich Walter
      Pages 254-260
  12. Back Matter
    Pages 260-276

About this book

Introduction

Phytomass and Primary Production of the Various Vegetational Zones and of the Entire Biosphere The biosphere is that thin layer at the earth's surface in which living organisms exist and biological cycling takes place. It includes the upper horizons of the soil in which plants root, the atmosphere near the ground, (insofar as organisms penetrate this space), and all the surface waters. More than 99% of the earth's biomass is phytomass, to which we shall limit our discussion. Amounts of phytomass are distinctly related to vegeta­ tional zones. Because accurate determination of phytomass and primary production is difficult, only gross estimates have been available until recently. However, in 1970, Bazilevich et al. published (in Russian) more accurate calculations, based on the rapidly accumulating literature, for the various thermal zones and bioclimatic regions of the earth. These authors calculated mean phyto­ mass and mean annual primary production for the various regions as dry mass (in tons) per hectare. On the basis of measurements of the areas covered by the individual regions, excluding rivers, lakes, glaciers, and permanent snow, total phytomass and total annual primary production for the various regions were obtained (see table). The sum of these figures is the phytomass and annual production of the land surface of the earth. In addition, the table gives corresponding data for the waters of the earth. The values involved are potential i. e. , they are based on natural vegetation uninfluenced by man.

Keywords

Vegetation cyclin earth plants soil

Authors and affiliations

  • Heinrich Walter
    • 1
  1. 1.University of HohenheimStuttgart-HohenheimFederal Republic of Germany

Bibliographic information

  • DOI https://doi.org/10.1007/978-1-4684-0468-5
  • Copyright Information Springer-Verlag New York 1979
  • Publisher Name Springer, New York, NY
  • eBook Packages Springer Book Archive
  • Print ISBN 978-0-387-90404-7
  • Online ISBN 978-1-4684-0468-5
  • Series Print ISSN 0073-1595
  • About this book