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Carbon and Nitrogen Stocks of the Soils of different climatic regions of Golestan Province, Iran

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Relation http://oar.icrisat.org/3672/
 
Title Carbon and Nitrogen Stocks of the Soils of different climatic regions of Golestan Province, Iran
 
Creator Khormali, F
Wani, S P
Srinivasa Rao, Ch
 
Subject Soil Science
Fertilizer Appications
 
Description Some biological soil quality indicators i.e. soil respiration, microbial biomass, biomass nitrogen, C:N,
net mineralization, population of the microorganisms together with total carbon, organic carbon, inorganic
carbon and total nitrogen were studied to investigate their variatiou in different climatic regions of Golestan
province, northeast Iran. Fourteen soil profiles were dug and described on three climatic regions namely:
Aridie-thermic, xeric-thermic and udic-mesic soil moisture and temperature regimes. All the studied soils
formed on loess or loess-derived parent materiaL Natural vegetation varies from sparse rangelands in the
northern arid parts to dense deciduous forest in the southern humid regions of north-facing slopes of the
Alborz mountain ranges. The studied soils were classified as Aridisols and Entisols in the aridic moisture
regimes, Inceptisols and Mollisols in the xeric moisture regimes and Alfisols in the udic moisture regime
regions. The results revealed that organic carbon and total nitrogen increased while inorganic carbon
decreased with increasing precipitation. Soil inorganiC carbon and consequently pH decreased with
increasing precipitation. Biological soil quality attributes such as soil respiratioIL, biomass carbon and
nitrogen increased sharply from aridic to xeric regions but decreased gradually in the udic regions. This
trend was in accordance with the population of bacteria and actinomycetes. The xeric-thermic moisture and
temperature regimes has provided favourable soil environment with regard to the available moisture and
temperature both for the population of .microorganisms and also the vegetative cover which both are
responsible for the biomass production
 
Date 2007
 
Type Conference or Workshop Item
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/3672/1/Proceedings_of_INRA_Carbon_and_nitrogen_stocks_KhormaliF_SPW_2007.pdf
Khormali, F and Wani, S P and Srinivasa Rao, Ch (2007) Carbon and Nitrogen Stocks of the Soils of different climatic regions of Golestan Province, Iran. In: Proceedings of International Symposium on Organic Matter Dynamics in Agro-Ecosystems., 16th to 19th July 2007, Poitiers, France.