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The long-term productivity of forest ecosystems depends on the cycling of nutrients. The effect of carbon dioxide fertilization on forest productivity may ultimately be limited by the rate of nutrient cycling. Contemporary and future disturbances such as climatic warming, N-deposition, deforestation, short rotation sylviculture, fire (both wild and controlled), and the invasion of exotic species all place strains on the integrity of ecosystem nutrient cycling. Global differences in climate, soils, and species make it difficult to extrapolate even a single important study worldwide. Despite advances in the understanding of nutrient cycling and carbon production in forests, many questions remain. The chapters in this volume reflect many contemporary research priorities. The thirteen studies in this volume are arranged in the following subject groups: • N and P resorption from foliage worldwide, along chronosequences and along elevation gradients; • Litter production and decomposition; • N and P stoichiometry as affected by N deposition, geographic gradients, species changes, and ecosystem restoration; • Effects of N and P addition on understory biomass, litter, and soil; • Effects of burning on soil nutrients; • Effects of N addition on soil fauna.
Research & information: general --- Biology, life sciences --- Forestry & related industries --- leaf stoichiometry --- Cyclocarya paliurus --- geographic variations --- natural populations --- climate variables --- nitrogen --- phosphorus --- N:P ratio --- soil stoichiometry --- soil nutrient --- nutrient limitations --- natural grassland --- natural forest --- soil fauna --- N addition --- soil profile --- community structure --- food resources --- poplar plantations --- experimental nitrogen addition --- understory plant growth --- plant nutrient --- nonstructural carbohydrates --- Alpine treeline --- Nitrogen --- Non-structural carbohydrates --- Phosphorus --- Potassium --- Remobilization --- Storage --- Upper limits --- nutrient resorption --- nitrogen and phosphorous --- planted forests --- climate zones --- plant functional types --- precipitation --- green leaf nutrient --- nitrogen deposition --- N and P colimitation --- leaf N:P stoichiometry --- soil N:P stoichiometry --- seasonal variations --- nutrition resorption --- ecological stoichiometry --- plant-soil feedback --- stand age --- Robinia pseudoacacia L. --- forests --- nutrients --- disturbance --- management --- diversity --- biomass --- soil properties --- experimental fires --- UV-spectroscopy analysis --- thermal infrared thermometer --- nitrogen and phosphorus addition --- understory plants --- stoichiometric ratio --- litter decomposition --- litter standing crop carbon --- conversion coefficient --- climatic factors --- Tibetan Plateau --- shrublands --- Cunninghamia lanceolata --- mixture effect --- nutrient cycling --- rhizosphere effect --- species competition
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The long-term productivity of forest ecosystems depends on the cycling of nutrients. The effect of carbon dioxide fertilization on forest productivity may ultimately be limited by the rate of nutrient cycling. Contemporary and future disturbances such as climatic warming, N-deposition, deforestation, short rotation sylviculture, fire (both wild and controlled), and the invasion of exotic species all place strains on the integrity of ecosystem nutrient cycling. Global differences in climate, soils, and species make it difficult to extrapolate even a single important study worldwide. Despite advances in the understanding of nutrient cycling and carbon production in forests, many questions remain. The chapters in this volume reflect many contemporary research priorities. The thirteen studies in this volume are arranged in the following subject groups: • N and P resorption from foliage worldwide, along chronosequences and along elevation gradients; • Litter production and decomposition; • N and P stoichiometry as affected by N deposition, geographic gradients, species changes, and ecosystem restoration; • Effects of N and P addition on understory biomass, litter, and soil; • Effects of burning on soil nutrients; • Effects of N addition on soil fauna.
leaf stoichiometry --- Cyclocarya paliurus --- geographic variations --- natural populations --- climate variables --- nitrogen --- phosphorus --- N:P ratio --- soil stoichiometry --- soil nutrient --- nutrient limitations --- natural grassland --- natural forest --- soil fauna --- N addition --- soil profile --- community structure --- food resources --- poplar plantations --- experimental nitrogen addition --- understory plant growth --- plant nutrient --- nonstructural carbohydrates --- Alpine treeline --- Nitrogen --- Non-structural carbohydrates --- Phosphorus --- Potassium --- Remobilization --- Storage --- Upper limits --- nutrient resorption --- nitrogen and phosphorous --- planted forests --- climate zones --- plant functional types --- precipitation --- green leaf nutrient --- nitrogen deposition --- N and P colimitation --- leaf N:P stoichiometry --- soil N:P stoichiometry --- seasonal variations --- nutrition resorption --- ecological stoichiometry --- plant-soil feedback --- stand age --- Robinia pseudoacacia L. --- forests --- nutrients --- disturbance --- management --- diversity --- biomass --- soil properties --- experimental fires --- UV-spectroscopy analysis --- thermal infrared thermometer --- nitrogen and phosphorus addition --- understory plants --- stoichiometric ratio --- litter decomposition --- litter standing crop carbon --- conversion coefficient --- climatic factors --- Tibetan Plateau --- shrublands --- Cunninghamia lanceolata --- mixture effect --- nutrient cycling --- rhizosphere effect --- species competition
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The long-term productivity of forest ecosystems depends on the cycling of nutrients. The effect of carbon dioxide fertilization on forest productivity may ultimately be limited by the rate of nutrient cycling. Contemporary and future disturbances such as climatic warming, N-deposition, deforestation, short rotation sylviculture, fire (both wild and controlled), and the invasion of exotic species all place strains on the integrity of ecosystem nutrient cycling. Global differences in climate, soils, and species make it difficult to extrapolate even a single important study worldwide. Despite advances in the understanding of nutrient cycling and carbon production in forests, many questions remain. The chapters in this volume reflect many contemporary research priorities. The thirteen studies in this volume are arranged in the following subject groups: • N and P resorption from foliage worldwide, along chronosequences and along elevation gradients; • Litter production and decomposition; • N and P stoichiometry as affected by N deposition, geographic gradients, species changes, and ecosystem restoration; • Effects of N and P addition on understory biomass, litter, and soil; • Effects of burning on soil nutrients; • Effects of N addition on soil fauna.
Research & information: general --- Biology, life sciences --- Forestry & related industries --- leaf stoichiometry --- Cyclocarya paliurus --- geographic variations --- natural populations --- climate variables --- nitrogen --- phosphorus --- N:P ratio --- soil stoichiometry --- soil nutrient --- nutrient limitations --- natural grassland --- natural forest --- soil fauna --- N addition --- soil profile --- community structure --- food resources --- poplar plantations --- experimental nitrogen addition --- understory plant growth --- plant nutrient --- nonstructural carbohydrates --- Alpine treeline --- Nitrogen --- Non-structural carbohydrates --- Phosphorus --- Potassium --- Remobilization --- Storage --- Upper limits --- nutrient resorption --- nitrogen and phosphorous --- planted forests --- climate zones --- plant functional types --- precipitation --- green leaf nutrient --- nitrogen deposition --- N and P colimitation --- leaf N:P stoichiometry --- soil N:P stoichiometry --- seasonal variations --- nutrition resorption --- ecological stoichiometry --- plant-soil feedback --- stand age --- Robinia pseudoacacia L. --- forests --- nutrients --- disturbance --- management --- diversity --- biomass --- soil properties --- experimental fires --- UV-spectroscopy analysis --- thermal infrared thermometer --- nitrogen and phosphorus addition --- understory plants --- stoichiometric ratio --- litter decomposition --- litter standing crop carbon --- conversion coefficient --- climatic factors --- Tibetan Plateau --- shrublands --- Cunninghamia lanceolata --- mixture effect --- nutrient cycling --- rhizosphere effect --- species competition --- leaf stoichiometry --- Cyclocarya paliurus --- geographic variations --- natural populations --- climate variables --- nitrogen --- phosphorus --- N:P ratio --- soil stoichiometry --- soil nutrient --- nutrient limitations --- natural grassland --- natural forest --- soil fauna --- N addition --- soil profile --- community structure --- food resources --- poplar plantations --- experimental nitrogen addition --- understory plant growth --- plant nutrient --- nonstructural carbohydrates --- Alpine treeline --- Nitrogen --- Non-structural carbohydrates --- Phosphorus --- Potassium --- Remobilization --- Storage --- Upper limits --- nutrient resorption --- nitrogen and phosphorous --- planted forests --- climate zones --- plant functional types --- precipitation --- green leaf nutrient --- nitrogen deposition --- N and P colimitation --- leaf N:P stoichiometry --- soil N:P stoichiometry --- seasonal variations --- nutrition resorption --- ecological stoichiometry --- plant-soil feedback --- stand age --- Robinia pseudoacacia L. --- forests --- nutrients --- disturbance --- management --- diversity --- biomass --- soil properties --- experimental fires --- UV-spectroscopy analysis --- thermal infrared thermometer --- nitrogen and phosphorus addition --- understory plants --- stoichiometric ratio --- litter decomposition --- litter standing crop carbon --- conversion coefficient --- climatic factors --- Tibetan Plateau --- shrublands --- Cunninghamia lanceolata --- mixture effect --- nutrient cycling --- rhizosphere effect --- species competition
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The majority of carbon stored in the soils of the world is stored in forests. The refractory nature of some portions of forest soil organic matter also provides the slow, gradual release of organic nitrogen and phosphorus to sustain long term forest productivity. Contemporary and future disturbances, such as climatic warming, deforestation, short rotation sylviculture, the invasion of exotic species, and fire, all place strains on the integrity of this homeostatic system of C, N, and P cycling. On the other hand, the CO2 fertilization effect may partially offset losses of soil organic matter, but many have questioned the ability of N and P stocks to sustain the CO2 fertilization effect.
polyphenols --- aluminum accumulator --- near natural forest management --- chloroform fumigation extraction --- soil structure --- soil enzymes --- manure pelleting --- microbial biomass --- Oxisol --- biolability --- soil nutrients --- second production cycle --- PLFA --- pyrolysis --- Eucalyptus sp. --- Cunninghamia lanceolata plantation --- carbon --- the Three Gorges Reservoir --- revegetation --- carbon distribution index --- climate change --- seasons --- annual increment average --- topography --- humic substances --- litter N --- soil fertility --- climate zone --- nutrient cycling --- Daxing’an Mountains --- carbon mineralization --- nitrification --- 31P nuclear magnetic resonance spectroscopy (31P NMR) --- organic matter --- throughfall --- forest soil --- dissolved organic carbon (DOC) --- P species --- stoichiometric homeostasis --- dissolved organic matter (DOM) --- soil organic matter fraction --- variable-charge soils --- ammonium --- nitrate --- soil degradation --- soil P fractions --- seasonal trends --- ammonia-oxidizing bacteria --- nitrogen dynamics --- net primary productivity --- soil microbial communities --- beech forests --- soil pH --- wood volume --- temperature --- northern temperate --- multilevel models --- Pinus massoniana plantation --- ammonia-oxidizing archaea --- P stock --- stand density --- P resorption efficiency --- forest types --- soil greenhouse gas flux --- enzyme activities --- soil N --- alpine forest --- moisture gradient --- climate --- climatic factors --- soil available phosphorus --- microbial activity --- soil available nitrogen --- leaf N:P ratio --- stemflow --- Chamaecyparis forest --- charcoal --- gross nitrogen transformations --- principal component analyses --- information review --- manuring --- stand age --- tree-DOM
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