EFFECTS OF GRAZING MANAGEMENT ON DIFFERENT FORMS OF ORGANIC CARBON IN PENETI PLAIN OF IZEH AREA IN KHUZESTAN PROVINCE

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OWJI A.R.; LANDI A.; HOJATI S.

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Journal: Journal of Water and Soil Conservation Year:2017 | Volume:24 | Issue:3 Page(s): 113-129

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Title

EFFECTS OF GRAZING MANAGEMENT ON DIFFERENT FORMS OF ORGANIC CARBON IN PENETI PLAIN OF IZEH AREA IN KHUZESTAN PROVINCE

Author(s)

OWJI A.R. | LANDI A. | HOJATI S. | Issue Writer Certificate

Keywords

PASTUREQ2

GRAZING MANAGEMENTQ1

SOIL CARBONQ1

SOIL QUALITYQ2

Abstract

Background and Objectives: Soil is a key resource that control the cycles of water, biota and geochemicals and the greatest organic matter reservoir. Little information is available about the effects of grazing on different forms of soil organic carbon in Khuzestan province PASTUREs. Therefore, this study was conducted to evaluate the effects of GRAZING MANAGEMENT on amount and forms of organic carbon in some PASTURE soils from Peneti plain of Izeh area in Khuzestan province.Materials and Methods: Accordingly, two adjacent PASTUREs with different management (grazing and grazing exclusion) around the Izeh city were selected and then, random soil samples were taken from the surface (0 to 20 cm) and subsurface (20 to 40 cm) in 15 points. After air drying the soil samples and passing them through a 2 mm sieve, physical, chemical properties and forms of organic carbon including total organic carbon (TOC), permanganateoxidizable carbon (POXC), fine particulate organic carbon (FPOC) and coarse particulate organic carbon (CPOC), dissolved organic carbon (DOC) and microbial biomass carbon (MBC) of the soils were measured.Results: The results showed that GRAZING MANAGEMENT has increased soil organic matter of surface and subsurface soils the values were statistically significant in the surface layers and increased the amounts of TOC (from 8.33 to 9.53 g kg-1), DOC (from 9.46 to 10.86 g L-1), MBC (from 418.1 to 456.2 mg kg-1), POXC (from 974.25 to 1035.3 mg kg-1), FPOC (from 430.6 to 450.7 mg kg-1) and CPOC (from 680.10 to 701.4 mg kg-1), but despite the increase in organic matter contents of subsurface soils the difference was not statistically significant. The effect of management practices, in order to have a significant effect to lower parts of the soil, it requires a longer period management. Comparing the biomass upon non-grazing (405 gm-2) and grazed (117 gm-2) areas, indicates a good condition of vegetation in the non-grazing and the effectiveness of enclosure in rehabilitation of PASTUREs in the study area.Conclusion: The results showed that MBC, DOC and POXC are more sensitive than other forms of organic carbon to GRAZING MANAGEMENT. They are more appropriate indicators for GRAZING MANAGEMENT on organic carbon quality being added to the soil. Also, based on carbon stratification ratio index (CSRI), regarding different forms of organic carbon in the study area, non-grazing was one of the most proper and efficient management practices which improved SOIL QUALITY. Accordingly, it seems that non-grazing practices should be considered as one of the major programs in renewable natural resources plans. On the other hand, the results indicate adverse effects of grazing on the quality of soil organic matter endangering the long-term sustainable production in PASTUREs.

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APA: Copy

OWJI, A.R., LANDI, A., & HOJATI, S.. (2017). EFFECTS OF GRAZING MANAGEMENT ON DIFFERENT FORMS OF ORGANIC CARBON IN PENETI PLAIN OF IZEH AREA IN KHUZESTAN PROVINCE. JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES), 24(3), 113-129. SID. https://sid.ir/paper/156147/en

Vancouver: Copy

OWJI A.R., LANDI A., HOJATI S.. EFFECTS OF GRAZING MANAGEMENT ON DIFFERENT FORMS OF ORGANIC CARBON IN PENETI PLAIN OF IZEH AREA IN KHUZESTAN PROVINCE. JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES)[Internet]. 2017;24(3):113-129. Available from: https://sid.ir/paper/156147/en

IEEE: Copy

A.R. OWJI, A. LANDI, and S. HOJATI, “EFFECTS OF GRAZING MANAGEMENT ON DIFFERENT FORMS OF ORGANIC CARBON IN PENETI PLAIN OF IZEH AREA IN KHUZESTAN PROVINCE,” JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES), vol. 24, no. 3, pp. 113–129, 2017, [Online]. Available: https://sid.ir/paper/156147/en

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