Carbon and Nutrient Dynamics in Natural and Agricultural Tropical EcosystemsSoil fertility is one of the most important factors regulating yield and productivity in both the agricultural and natural ecosystems of the tropics, and maintaining soil fertility has become a key challenge to sustainable development in this region. This book presents the ecological processes and management practices which affect soil fertility and then looks at ways to integrate this knowledge to develop economically feasible solutions. Based on a symposium held at the University of Zimbabwe in May 1996, the volume is partly the result of ten years of research by the Soil Biology and Fertility Project in Zimbabwe and includes contributions from researchers in Africa, Asia, Europe and North America. The book is divided into five sections covering nutrient dynamics in soil, decomposition of crop residues, tree-soil-crop interactions in agroforestry and in ecosystem dynamics, and prospects for the future. Essential reading for agronomists, soil scientists and ecologists studying the tropics, this volume is also an important reference for decision-makers in land use and development in tropical countries. |
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Contents
Organic Carbon and Plant Nutrients in Soils under | 15 |
Isotopic Composition of Organic Carbon in Some Soils | 23 |
Providers and Plunderers of Nitrogen 333 | 33 |
Copyright | |
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Common terms and phrases
acid aggregates Agricultural agroforestry agroforestry systems alley cropping analysis banana Biology and Biochemistry Biology and Fertility biomass biophysical C-to-N ratio CAB INTERNATIONAL Cadisch Campbell clay coffee husks concentration cultivation cycling decomposable decomposition depth Ecology ecosystem effects fallow farm farmers ferralsol field fractions Giller Gliricidia grass grass-legume grassland ha¹ Handayanto herbaceous horizon improved increase inorganic inputs interactions isotopic Kirchmann leaching legumes Leguminosae Leucaena lignin litter Machanga maize maize system manure mineralization miombo Misamfu mixed pastures mulch Munyawiri Murape Mutuobare N₂ fixation Nairobi nitrogen nodulate Noordwijk Okigwe organic-matter Oxisols Plant and Soil plant litter polyphenols production prunings rain forest rainfall rates release Research residues roots samples savannahs season Soil Biology soil fertility soil organic matter Soil Science Soil Science Society SOM-C species stability studies Table Tiessen trees tropical soils turnover uptake variability woodland yield Zimbabwe



