Subscribe Now Subscribe Today
Science Alert
Curve Top
International Journal of Soil Science
  Year: 2011 | Volume: 6 | Issue: 2 | Page No.: 114-123
DOI: 10.3923/ijss.2011.114.123
Facebook Twitter Digg Reddit Linkedin StumbleUpon E-mail

Soil Organic Matter Status Changes with Cultivation of Overgrazed Pastures in Semi-dry West Central Iran

J. Fallahzade and M.A. Hajabbasi

The native intensively grazed and degraded pastures in dry areas are initially low in soil organic matter content. Therefore, frequently cultivation and conversion of these lands to croplands might have a positive influence on soil properties including soil organic matter. This study was conducted to determine the impacts of cultivation of overgrazed pasture on selected soil organic matter components in Javanmardi Plain, west central Iran. Total Organic Carbon (TOC), Particulate Organic Carbon (POC) compounds, total nitrogen and carbohydrate fractions were measured. Two sites including a pasture overgrazed by sheep in adjacent with one pasture converted to wheat fields for more than 23 years were used. Soil samples were taken from 0-5 and 5-15 cm depths in each site. Land use change resulted in significant (p<0.05) increases in TOC, POC, total nitrogen and carbohydrates contents in both depths. In most cases, the amounts of TOC in macroaggregates (0.25-2 mm) were significantly higher than those of microaggregates (0.05-0.25 mm) and large portion of TOC was stored in the macroaggregates. Cultivation of overgrazed pasture considerably increased the percentage of POC/TOC, reflecting more plant residue inputs under plantation. Although, land use change considerably increased TOC and carbohydrate amounts of intact soil, in most cases positive impact of land use change on storage of TOC and carbohydrate in aggregates were not (p>0.05) significant.
PDF Fulltext XML References Citation Report Citation
  •    Land use Change Effects on Carbohydrate Fractions, Total and Particulate Organic Matter of Forest Soils in Central Zagros Mountains
  •    Soil Changes Associated with Imperata cylindrica Grassland Conversion in Indonesia
  •    Comparative Analysis of Soil Nutrient Balance at Farm Level: A Case Study in Jimma Zone, Ethiopia
  •    Soil Organic Matter and Carbohydrate Contents of a Dystric Leptosol Under Organic Waste Management and Their Role in Structural Stability of Soil Aggregates
  •    Effect of Different Land Use Treatments on Soil Structural Quality and Relations with Fractal Dimensions
  •    Effect of Shifting Cultivation on Distribution of Nutrient Elements and Carbohydrates Within Water-Stable Aggregates in Northern Iran
How to cite this article:

J. Fallahzade and M.A. Hajabbasi, 2011. Soil Organic Matter Status Changes with Cultivation of Overgrazed Pastures in Semi-dry West Central Iran. International Journal of Soil Science, 6: 114-123.

DOI: 10.3923/ijss.2011.114.123






Curve Bottom