Relationships Among Forage and Litter Production in Three Grazing Intensities in Nodooshan Rangeland (Yazd, Iran)

Document Type : Research and Full Length Article

Authors

1 Range management, Tarbiat Modaress University

2 Gorgan Agricultural Sciences and Natural Resources University

3 Tarbiat Modaress University, Noor

Abstract

Grazing management plays an important role in the continuous and economic
utilization of pastures. Proper grazing management is a main factor for the accumulation of
plant litter which reduces soil erosion and increase the soil permeability to keep more
moisture in the soil. In current study, the effect of three different grazing intensities (low,
moderate and high) along with the grazing gradient on the forage production rate and plant
litter percentage was investigated on Nodooshan steppe pastures of Yazd, Iran. A randomized
complete block with three replications was used to compare three grazing methods. Data for
forage production and litter percent were collected from a 2m2 quadrate in each plot. The
results showed significant differences among grazing systems for both traits (P<0.05). The
results showed that low grazing had the highest forage production. The regression equation
between forage production and litter percentage were logarithmic in both moderate and high
grazing intensities. For low grazing intensity, the relationships between two traits showed
quadratic egression and therefore, it was concluded that moderate grazing intensity was the
best in terms of both forge and litter production.

Keywords


Ajorloo, M., 2005. The effect of interval
crisis centers on rangeland vegetation and
soil properties. J. of Pajouhesh and
Sazandegi in natural resources. 74: 170-
174. (In Persian).
Baghestani, N., Arzani, H., 2001.
Investigation on effect of goat grazing
intensity on rangeland vegetation steppe,
J. of Iran Natural Resources. 57(1): 155-
168pp. (In Persian).
Bartolome J.W., Stroud M.C., Heady H.F.,
1978. Influence of natural mulch on
production on differing California annual
range sites, J. of Range Management.
33(1): 4-8.
Chen Y., Gilzae L., Lee P., Oikawa T.,
2007. Model analysis of grazing effect on
above-Ground biomass and above-ground
net primary production of a Mongolian
grassland ecosystem, J. of Hydrology.
333: 155-164.
This is trial version
www.adultpdf.com
Journal of Rangeland Science, 2011, Vol. 1, No. 3 E. Fakhimi et al. / 223
Clary W.P., Leininger W.L., 2000. Stubble
height as tool for management of riparian
areas, J.of Range Management. 53(6):
562-572.
Fattahi, B., 2003. Investigation on effect of
exists grazing on vegetation and soil in
summer rangeland Plour, MS. Thesis,
University of Tarbiat Modares. 79pp. (In
Persian).
Holechek J.L., Pieper R.D., Herbel C.H.,
2004. Range Management: principle and
practices, 5th Edition, Prentice-Hall
publisher, Upper Saddle River, NJ. USA.
607pp.
Kooijman A.M., Smith A., 2001. Grazing
as a measure to reduce nutrient
availability in acid dune grassland and
pine forests in the Netherlands. J. of
Ecological Engineering, 17: 63-77.
Mapfumo E., Naeth M.A., Baron V.S.,
Dick A.C., Chanasyk D.S., 2005. Grazing
impacts on litter and roots: perennial
versus annual Grasses J. of Range
Management. 55(1):16-22.
Molinar F., Galt D., Holechek J., 2001.
Managing for Mulch, J. of Rangeland,
24(1): 3-7.
Muller-Dombois, D, Ellenberg, H., 1974.
Aims and methods of vegetation ecology
Wiley, john weily and sons, New York,
545p.
Onagh, M., 1994. Evaluation of production
potential and management of rangelands
with using GIS. Proceeding of the first
national workshop on rangeland
management of Iran, Isfahan University
of Technology. 255-267pp.
Rauzi F., 1960: Water Intake Studies on
Range Soils at Three Location on the
Northern Plains, J. of Rangeland. 13(3):
179-186.
Refahi, H., 1999. Water erosion and its
control, Tehran University Publications,
Second edition, 551p. (In Persian).
Schwan H.E., Hodges D.L., Weaver C.N.,
1949. Influence of mulch and grazing on
forage growth, J. of Range Management.
2(3): 142-14.
Talebi, A.R., 2002. Application of statistic,
Tehran University Press, 271p.
Wikeem B.M., Newmam R.F., Ryswyk
A.L., 1989. Effect of fertilization date
and litter removal on grassland forage
production, J. of Range Management.
42(5): 412-415.
Willms W.D., Smolik S., Bailey A.W.,
1986. Herbage production following litter
removal on Alberta Native Grasslands, J.
of Range Management. 39(6): 536-540.
Zhao, W.Y., Li J.L., Qi J. G., 2007.
Change in vegetation diversity and
structure in response to heavy grazing
pressure in the Northern Tianshan
Mountains, China, J. of Arid
Environments. 68: 465-479.