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Carbon, Nitrogen and Phosphorus Cycling in Forest Soils

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ISBN: 9783038976820 9783038976837 Year: Pages: 238 DOI: 10.3390/books978-3-03897-683-7 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Biology --- Forestry
Added to DOAB on : 2019-06-26 08:44:06
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Abstract

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.

Keywords

carbon distribution index --- moisture gradient --- soil organic matter fraction --- soil degradation --- soil available nitrogen --- soil available phosphorus --- temperature --- stand density --- charcoal --- forest soil --- carbon mineralization --- microbial activity --- nitrification --- polyphenols --- temperature --- soil microbial communities --- PLFA --- seasons --- nitrogen dynamics --- gross nitrogen transformations --- Daxing’an Mountains --- climatic factors --- soil nutrients --- forest types --- principal component analyses --- soil structure --- soil pH --- Oxisol --- variable-charge soils --- aluminum accumulator --- seasonal trends --- beech forests --- soil enzymes --- organic matter --- multilevel models --- near natural forest management --- Pinus massoniana plantation --- Cunninghamia lanceolata plantation --- soil greenhouse gas flux --- biolability --- tree-DOM --- dissolved organic matter (DOM) --- carbon --- dissolved organic carbon (DOC) --- stemflow --- throughfall --- alpine forest --- ammonia-oxidizing bacteria --- ammonia-oxidizing archaea --- ammonium --- nitrate --- revegetation --- microbial biomass --- chloroform fumigation extraction --- enzyme activities --- stoichiometric homeostasis --- the Three Gorges Reservoir --- Eucalyptus sp. --- wood volume --- second production cycle --- annual increment average --- soil fertility --- nutrient cycling --- Chamaecyparis forest --- humic substances --- 31P nuclear magnetic resonance spectroscopy (31P NMR) --- P species --- topography --- net primary productivity --- climate zone --- climate --- soil N --- litter N --- climate change --- manuring --- manure pelleting --- northern temperate --- pyrolysis --- information review --- leaf N:P ratio --- P resorption efficiency --- soil P fractions --- P stock --- stand age

Sustainable Cropping Systems

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ISBN: 9783039289073 / 9783039289080 Year: Pages: 326 DOI: 10.3390/books978-3-03928-908-0 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Biology --- Agriculture (General)
Added to DOAB on : 2020-06-09 16:38:57
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Global crop production must substantially increase to meet the needs of a rapidly growing population. This is constrained by the availability of nutrients, water, and land. There is also an urgent need to reduce the negative environmental impacts of crop production. Collectively, these issues represent one of the greatest challenges of the twenty-first century. Sustainable cropping systems based on ecological principles are the core of integrated approaches to solve this critical challenge. This special issue provides an international basis for revealing the underlying mechanisms of sustainable cropping systems to drive agronomic innovations. It includes review and original research articles that report novel scientific findings on improvement in cropping systems related to crop yields and their resistance to biotic and abiotic stressors, resource use efficiency, environmental impact, sustainability, and ecosystem services.

Keywords

organic cropping system --- maize --- soybean --- wheat --- partial returns --- Zea mais L. --- Triticum aestivum L. --- Helianthus annuus L. --- organic fertilization --- mineral N fertilization --- protein crops --- systematic review --- Europe --- multiple correspondence analysis (MCA) --- potato (Solanum tuberosum) --- shade --- light --- yield --- growth --- quality --- cover crops --- agrobiodiversity --- conventionalization --- system approach --- harvesting strategies --- forage yield and quality --- forage sorghum --- pearl millet --- Texas High Plains --- kura clover --- living mulch --- cover crop --- perennial --- conservation --- nitrogen --- forage --- economics --- farmer’s perception --- maize --- push-pull technology --- stemborer --- no-tillage --- conservation agriculture --- durum wheat --- gluten fractions --- SDS-PAGE analysis --- leguminous cover crop --- vetch --- double cropping --- grain yield --- N uptake --- N use efficiency --- rice --- hierarchical patch dynamics --- cropping system design --- up-scaling --- vineyard system --- complexity --- organization --- cropping systems --- water --- nitrogen --- WHCNS --- scenario analyses --- maize production --- nitrogen use efficiency --- nitrogen nutrition --- Acidic soil --- crop rotation --- enzyme activities --- green manure --- sustainable yield index --- nutrient balance --- crop residue incorporation --- straw decomposition --- residue C and N release --- SOC and STN stocks --- cover crop --- manure --- nitrate --- nitrogen --- cereal rye --- maize --- no-tillage --- cover crop --- irrigation --- weed suppression --- gross margin --- faba bean --- forage pea --- fall grazing --- cover crop --- catch crop --- nutrient cycling --- cropping systems --- sustainable crop production --- agroecology --- nutrient use efficiency --- water use efficiency --- environmental quality

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