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Effects of mechanical erosion control practices on soil and vegetation carbon sequestration (case study: Catchment Basin of Kardeh- Iran)

By Somayeh Naseri, Mohammad Jafari, Hossein Tavakoli and Hossein Arzani

Abstract

Climate change and global warming are major problems all over the world that anthropogenic greenhouse gases emission especially Co2 is one of the main reasons. So it is vital to find methods to reduce Co2 or increase Carbon sequestration. Carbon sequestration by plants and in soils accounted as an effective way of reducing CO2 emission to the atmosphere, but considerable amount of soil organic carbon is lost by erosion annually. One way to deal with these losses is mechanical practices that control erosion and stabilizes the soil. This study has been conducted to evaluate the effect of mechanical practices on carbon sequestration in Kardeh watershed of Mashhad, Iran. Rock check dams, gabions and small earth dams were considered as mechanical treatments comparing to natural rangeland. Plant vegetation biomass, litter and soil samples were taken and measured for carbon stocks.Results indicate the most amount of sequestered carbon were occurred in the soil (about 99%). Natural rangelands with 319 and 252 ton. Ha-1 in 0-25 and 25-50 cm had highest and rock check dam with 94 and 81 ton. Ha-1 in these depthshad the lowest soil carbon sequestration. Small earth dams with 170 and 132 ton. Ha-1intop soil and sub soil has the highest soil carbon stocks among mechanical treatments during 16 years. So soil erosion control measures are potential cases for carbon sequestration projects through soil stabilization

Topics: Key words, Carbon sequestration, mechanical practices, soil, vegetation, Kardeh
Year: 2014
OAI identifier: oai:CiteSeerX.psu:10.1.1.651.9093
Provided by: CiteSeerX
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