Magnesium Deficiency in Forest Ecosystems

1. Front Matter

   Pages i-xvi

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2. Magnesium deficiency. Symptoms and development

   1. Front Matter

      Pages 1-1

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   2. Visual magnesium deficiency symptoms (coniferous, deciduous trees) and threshold values (foliar, soil)

      • H.-P. Ende, F. H. Evers

      Pages 3-21

   3. Temporal and spatial development of magnesium deficiency in forest stands in Europe, North America and New Zealand

      • G. Landmann, I. R. Hunter, W. Hendershot

      Pages 23-64

3. Magnesium in forest ecosystems

   1. Front Matter

      Pages 65-65

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   2. Biogeochemistry of magnesium in forest ecosystems

      • K. H. Feger

      Pages 67-99

   3. Tree physiology

      • S. Slovik

      Pages 101-214

   4. Influence of magnesium supply on tree growth

      • K. Makkonen-Spiecker, H. Spiecker

      Pages 215-226

   5. Causes of magnesium deficiency in forest ecosystems

      • K. Katzensteiner, G. Glatzel

      Pages 227-251

4. Recuperation of magnesium deficiency through fertilization

   1. Front Matter

      Pages 253-253

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   2. Soil chemistry

      • S. Augustin, M. Mindrup, K. J. Meiwes

      Pages 255-273

   3. Tree nutrition

      • M. Kaupenjohann

      Pages 275-296

   4. Structural aspects of magnesium deficiency

      • S. Fink

      Pages 297-307

   5. Fine-root development

      • S. Raspe

      Pages 309-332

   6. Evaluation of different magnesium fertilization strategies

      • W. Schaaf

      Pages 333-355

5. Concluding remarks

   1. Concluding remarks

      • R. F. Hüttl

      Pages 357-362

R. F. HUTTL AND W. SCHAAF Brandenburg Technical University Cottbus, Chair of Soil Protection and Recultivation, P.O. Box 10 13 44, 03013 Cottbus, Germany The health status of forest trees and stands is determined by numerous site factors such as chemical, physical, and biological soil factors, water supply, climate, weather conditions, management history as well as atmospheric deposition impacts. In this context, the nutrient supply is an important evaluation parameter. Forest trees well supplied with nutrients are more resistant to stresses that affect the forest ecosystem than other trees. This is true for both biotic and abiotic influences. Therefore the investigation of the so-called 'new type forest damage' was aimed at the exact determination of the health status of damaged trees. When considering the complete forest ecosystem, health (=vitality) means the sustainable ability to withstand negative environmental influences and still remain stable and productive. From this viewpoint, an optimal nutritional status is a prerequisite for an optimal health status. The term 'new type forest damage' comprises a number of damage symptoms which have been observed in various tree species on very different sites since the mid-1970s, particularly in Europe and North America. However, they occurred much more intensively in the 1980s. Generally, this forest damage was thought to be related to negative impacts of air pollutants.

• chemistry
• ecosystem
• ecosystems
• forest
• nutrition
• soil

• Brandenburg Technical University, Cottbus, Germany

  Reinhard F. Hüttl, Wolfgang Schaaf

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