TAILIEUCHUNG - Soil respiration in young and old oriental spruce stands and in adjacent grasslands in Artvin, Turkey

Soil respiration is a good indicator of soil quality. In this study, the influence of species type and sampling time on soil respiration in young and old oriental spruce (Picea orientalis (L.) Link.) stands without understory and with a Rhododendron ponticum L. understory and in adjacent grasslands were investigated in Genya Mountain, Artvin, Turkey. | Turk J Agric For 28 (2004) 429-434 © TÜB‹TAK Soil Respiration in Young and Old Oriental Spruce Stands and in Adjacent Grasslands in Artvin, Turkey Ayd›n TÜFEKÇ‹O⁄LU*, Mehmet KÜÇÜK Department of Forestry, Kafkas University, 08000, Artvin - TURKEY Received: Abstract: Soil respiration is a good indicator of soil quality. In this study, the influence of species type and sampling time on soil respiration in young and old oriental spruce (Picea orientalis (L.) Link.) stands without understory and with a Rhododendron ponticum L. understory and in adjacent grasslands were investigated in Genya Mountain, Artvin, Turkey. Soil respiration was measured approximately monthly from May to October using the soda-lime technique. Mean daily soil respiration across all sites -2 -1 ranged from to g C m d . There were significant differences between grasslands and old forest sites, but no significant differences between young forest sites and grasslands. Seasonal changes in soil respiration were strongly related to temperature changes. Over all sites, soil temperature and soil moisture together accounted for 75% of the seasonal variability in soil respiration. Mean soil respiration rates correlated strongly with fine root (<2 mm) biomass (R = , P < ), surface (0-15 cm ) soil sand content (R = , P < ), surface soil silt content (R = , P < ), and subsurface (15-35 cm) soil pH (R = , P < ). Overall, grasslands had significantly higher soil respiration rates than did adjacent old forests, indicating greater biological activity within the grasslands. Key Words: soil biological activity, oriental spruce, grasslands, C cycle Türkiye-Artvin Yöresindeki Genç ve Yafll› Ladin Meflçerelerinde ve Bitifli¤indeki Çay›rl›klarda Toprak Solunumu Özet: Toprak solunumu toprak kalitesinin önemli göstergelerinden bir tanesidir. Bu çal›flmada, Artvin-Genya Da¤› mevkisindeki genç ve yafll› do¤u ladini (ormangülü diri örtüsü olan ve olmayan) .

• Nông nghiệp
• Soil biological activity
• Oriental spruce
• Oriental spruce Picea orientalis L
• Drier soils
• Rhododendron ponticum L
• understory
• Early post emergent herbicides
• Herbicide mixtures
• Soil biological activity in maize L
• Control and soil biological activity
• Soil respiration
• Dehydrogenase activity
• Phospatase activity
• Soil under banana cropping system
• Biological properties of soil
• Journal of Agriculture and Forestry
• Metasequoia glyptostroboides
• Biological metabolism
• Seedling soil
• Nutrient element content
• Enzyme activity
• Biological indicators
• Soil pollution
• Toxic effect
• Technogenic factor
• Activity rates
• Microbial activity
• Microbial diversity
• Evaluating soil quality
• Co inoculation
• Biological properties
• Soil health
• Microbial count
• Enzymatic activity
• Soil under sub tropical ecosystems
• Conservation tillage
• Crop residue management
• Biological activity
• Carbon mineralization
• Electrical conductivity
• Soil bacteria
• Soil fungi
• Soil actinomycetes
• Tobacco waste compost
• Farmyard manure lettuce
• Microbial and enzyme activity
• Organic C
• Total N
• Soil organic matter
• Especially nitrate
• Nitrogen mineralization of plant
• Rice straw
• Industrial tobacco residues
• Conventional tillage
• Microbial biomass carbon
• Microbial biomass nitrogen
• Zinc solubilizing bacteria
• Bacillus aryabhattai
• Biofortification of Zn
• Soil enzymes
• Zinc solubilizing bacterial (ZSB) isolates
• Microbial biomass
• Organic matter dynamics
• Sub tropical ecosystems
• Conservation practices
• Bulk density
• CO2 evolution
• Cotton based soybean rotation