Effects of fire on vegetation dynamics in semi-steppe rangelands (Case study: Buin va Miandasht rangelands, Isfahan province)

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NAGHIPOUR BORJ A.A.; NABIZADEH S.; POURREZAEI J.

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Journal: IRANIAN JOURNAL OF RANGE AND DESERT RESEARCH Year:2019 | Volume:26 | Issue:3 (76) Page(s): 587-598

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Title

Effects of fire on vegetation dynamics in semi-steppe rangelands (Case study: Buin va Miandasht rangelands, Isfahan province)

Author(s)

NAGHIPOUR BORJ A.A. | NABIZADEH S. | POURREZAEI J. | Issue Writer Certificate

Keywords

Central ZagrosQ2

life formQ1

growth formQ1

palatabilityQ2

litterQ2

rangelands fireQ1

Abstract

Fire is one of the most important influencing factors on the structure and composition of plant communities, especially in arid and semiarid rangelands. This study was designed to investigate the role of fire on vegetation dynamics in semi-steppe rangelands of Central Zagros. A stratified random sampling was used to collect the data from six sites with one and five years after the last fire. At each rangeland site, 20 plots with four square area meters, 10 plots in the burned sites and 10 plots in the control sites, were used. The cover percentage of each species was accurately recorded. A one-way analysis of variance and Tukey's test were used to compare each of the variables. The results showed that the fire significantly reduced the vegetation cover and litter, and increased the bare soil surface in the region. The composition of the fire region was close to the control area after a period of five years. The fire caused a decrease in the percentage of shrubs and an increase in the proportion of perennial grasses, annual grasses, and annual forbs in the region. The fire also changed the vegetation composition of rangelands, so that the proportion of hemicryptophytes, therophytes, and geophytes were decreased while chamaephytes increased. Fire also increased the proportion of high and moderate palatable species (class I and II) and reduced the proportion of class III species. Based on the results of this study, it can be concluded that the fire reduces litter and increases the bare soil; consequently, the soil erosion is exacerbated, hence this should be considered in rangeland management. Overall, uncontrolled fires in the semi-arid regions of the country will not lead to the restoration of vegetation cover.

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APA: Copy

NAGHIPOUR BORJ, A.A., NABIZADEH, S., & POURREZAEI, J.. (2019). Effects of fire on vegetation dynamics in semi-steppe rangelands (Case study: Buin va Miandasht rangelands, Isfahan province). IRANIAN JOURNAL OF RANGE AND DESERT RESEARCH, 26(3 (76) ), 587-598. SID. https://sid.ir/paper/360837/en

Vancouver: Copy

NAGHIPOUR BORJ A.A., NABIZADEH S., POURREZAEI J.. Effects of fire on vegetation dynamics in semi-steppe rangelands (Case study: Buin va Miandasht rangelands, Isfahan province). IRANIAN JOURNAL OF RANGE AND DESERT RESEARCH[Internet]. 2019;26(3 (76) ):587-598. Available from: https://sid.ir/paper/360837/en

IEEE: Copy

A.A. NAGHIPOUR BORJ, S. NABIZADEH, and J. POURREZAEI, “Effects of fire on vegetation dynamics in semi-steppe rangelands (Case study: Buin va Miandasht rangelands, Isfahan province),” IRANIAN JOURNAL OF RANGE AND DESERT RESEARCH, vol. 26, no. 3 (76) , pp. 587–598, 2019, [Online]. Available: https://sid.ir/paper/360837/en

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