Influence of Pasture and Rainfed Agriculture Land Uses on Soil Loss in Dojag-Chay Subwatershed (Ardabil Province- NW Iran)

Journal of Rangeland Science

مقاله 11، دوره 1، شماره 2، فروردین 2011، صفحه 153-165   

نوع مقاله: Research and Full Length Article

نویسندگان

R. Talaei^{* 1}؛ A. Jafari Ardakani²؛ F. Azimi³؛ R. Bayat⁴؛ M. Parehkar²

¹Scientific Member of the Center of Agriculture and Natural Resources of Ardabil, Ardabil

²Scientific Members of the Center of Soil Conservation and Watershed Management, Tehran.

³Scientific Member of the Center of Agriculture and Natural Resources of Ardabil

⁴Scientific Members of the Center of Soil Conservation and Watershed Management, Tehran

چکیده

One of the main resonator factors in watershed soil erosion is inappropriate
land management including conversion of pasture land to dry-land farming.
Unfortunately, the changes of Gara Su watershed usages have been very common.
Thus, in order to understand the influence of land use on runoff rate and soil loss, soil
losses were investigated and determined under both pasture and dry-land agricultures
at sub-watershed of Dojag chay in southern west Qara Su Basin (within Ardebil
province). In this Research, using a drop maker rainfall simulator device, 18
treatments under the said watershed were conducted using an artificial rain with the
intensity of 6 mm/ min for 6 minutes and soil loss rate was measured due to the
rainfall in two user types in dry-land and rangeland under natural humidity conditions
and approximately the same as the raining season in three slope classes of 5 to 12, 12
to 20 and greater than 20. The results showed that with the cultivation, cultivated
soils get empty and their porosity and permeability increase so, with the increase of
water penetration ability, their runoff compared to the pasture lands starts with delay.
Comparing the amount of runoff shows that after runoff gets started in rain-fed
agriculture lands, the flowing speed and amount of water become more than those of
pasture lands and the statistical analysis also verified the significant relationship,
especially in slopes of more than 20% between the amount of soil loss and land use.
The soil loss under rain-fed agriculture was 8.8 times more than the pasture. As the
soil loss was compared for different slope classes of 5-12, 12-20, and more than 20
slope percent, the results indicated that the soil losses under rain-fed agriculture were
4.5, 5.6, and 12 times more than the pasture. The study results, therefore, can be
utilized for proper management of area through devoting necessary attention into
land uses.

کلیدواژه‌ها

Pasture land؛ dry-land farming؛ Soil Loss؛ Dojag Chay watershed؛ Rainfall simulator and Runoff

مراجع

Agha Razi, H., and Ghodoosi, J., 2000.
Relationship between land use, soil
erosion and slope sediment yield (in
Persian). Proceedings of the National
Conference of land management and
soil erosion, sustainable development,
ARAK-IRAN: 2 to 4 February: pp. 362-
375.
Ahmadi Ilkhchy, A., Haj Abbas M A. and
Jalalian A., 2001. Effects of changing
pasture land to dry land production on
runoff rate, soil loss in the Dorhan
region, Chaharmahal Bakhtiari(in
Persian). Science and Technology of
Agriculture and Natural Resources, 6
(1): 103-115.
Andraski, B.J., Daniel, T.C., Lowery B.
and Mueller D.H., 1985. Runoff results
from natural and simulated rainfall for
four tillage system. Trans. Am. Soc.
Agric. Eng. 28, 1219-1225.
Azimi, F., Talaei, R., Hekmatjoo, S., 2005.
Collection and identification of the flora
of Ardabil province and establishment
of herbarium (Phase: 2) (in Persian).
Research center of Agriculture and
Natural Research center of Ardabil
Province. Final Report of research plan,
110 p.
Bajaracharya, R. M., Lal, R., 1992.
Seasonal soil loss and erodibility
variations on a Miamian silt loam soil.
Soil Science Society of American
Journal 56, 1560–1565. 
Journal of Rangeland Science, 2011, Vol. 1, No. 2 Reza Talaei, et al. / 163
Banai, M., 1998. Revised map of thermal
and moisture regimes of soils. Soil and
Water Research Institute of Iran.
Boix-Fayos, C., Calvo-Cases, A., Imeson,
A. C., Soriano-Soto, M. D., Tiemessen,
I. R., 1998. Spatial and short-term
temporal variations in runoff, soil
aggregation and other soil properties
along a Mediterranean climatological
gradient. Catena 33, 123–138.
Boix-Fayos, C., Martinez-Mina, M.,
Arnau-Rosalen, E., Calvo-Cases, A.,
Castillo V., and Albaladejo J., 2006.
Measuring soil erosion by field plots:
Understanding the sources of variation.
Earth Science Review 78, 267-285.
Cambardella, C.A., Elliott E.T., 1993.
Carbon and distribution in aggregates
from cultivated and native grassland
soils. Soil. Sci. Soc. Am. J. 57, 1071-
1076.
Celik, I., 2006. Land-use effects on organic
matter and physical propertes of soil in
a Southern Mediterranean highland of
Turkey. Soil and Tillage Research
83(2), 173-286.
Cerda, A., Ibanez S. and Calvo A., 1997.
Design and operation of a small and
portable rainfall simulator for rugged
terrain. Soil Technology 11, 163-170.
Chapi K., 1997. Type and amount of
erosion in relation to land management
and operation of deposition determine
contributions to optimize land use (in
Persian). Watershed Management MSc
thesis, Department of Natural
Resources, Tarbiat Modarres
University, 185 p.
Consulting engineers of Boomabad, 1996.
Qara Su watershed feasibility studies;
Vegetation cover report (pasture) (in
Persian). Vol. 6, 83 p.
Davoodi Rod A., 2001. Evaluate the role
of land management on soil erosion (in
Persian). Proceedings of the National
Conference of land management and
soil erosion, sustainable development,
ARAK-IRAN: 2 to 4 February: pp. 109-
120.
Dolati mehr, A., Hezhabrpour, G., Agai S.,
2003. Study the temperature crisis and
its effect on the dominant crops in
Ardebil province (in Persian).
Prediction and Research Department
Meteorological Application of Ardebil,
135 p.
Dunjó, G., Pardini, G. and Gispert M.,
2004. The role of land use-land cover on
runoff generation and sediment yield at
a micro plot scale, in a small
Mediterranean catchment. Journal of
Arid Environments 57, 99-116.
Dunne, T., Dietrich, W. E., Brunengo, M.
J., 1978. Recent and past erosion rates
in semi-arid Kenya. Zeitschrift fuer
Geomorphologie Supplementband 29,
130–140.
Ebrahimi, N. AH., 2000. The effect of
different land utilization in erosion and
sedimentation in Kahrizi Arak
catchment (in Persian). Proceedings of
the National Conference of land
management and soil erosion,
sustainable development, ARAK-IRAN:
2 to 4 February: pp. 177-190.
Elliott, E.T., 1986. Aggregate structure and
carbon, nitrogen, and phosphorous in
native and cultivated soils. Soil Sci. Soc.
Am. J. 50, 627-633.
Elwell, H. A., Stocking, M. A., 1976.
Vegetative cover to estimate soil
erosion hazard in Rhodesia. Geoderma
15, 61–70.
Erskin, W. D., Mahmoudzadeh, A. and
Myers, C., 2002. Land use effects on
sediment yields and soil loss rates in
small basins of Triassic sandstone near
Sydney NSW, Australia, Catena 49,
271-287.
Francis, C. F., Thornes, J. B., 1990. Runoff
hydrographs from three Mediterranean
vegetation cover types. In: Thornes, J.
B. (Ed.), Vegetation and Erosion.
Wiley, Chichester, pp. 363-384.
Ghodoosi, J., Tavakoli, M., Soltanei, M. J.,
Khalkhalei, S. A., Sepanji, H.,
Maddadei, A,. 2004. Assessment of
quarantine methods in pasture lands to
decrease of soil erosion and sediment 
164/ J. of Rang. Sci., 2011, Vol. 1, No. 2 Influence of Pasture…..
yield (in Persian). The center of soil
conservation and watershed
management, Tehran, Proceedings of
the Third National Conference on
erosion and sedimentation, pp. 193-200.
Hamed, Y., Albergel, J., Pépin, Y.,
Asseline, J., Nasri, S., Zante, P.,
Berndtsson, R., El-Niazy M. and Balah
M., 2002. Comparision between rainfall
simulator erosion and observed
reservoir sedimentation in an erosionsensitive semiarid catchment. Catena
50, 1-16.
Jasa, P.J. and Dickey, E.C., 1991. Sub
soiling Contouring, and tillage on
erosion and runoff. APPL – Eng. Agric:
American Society of Agriculture
Engineers 7, 81-85.
Kamphorst A., 1987. A small rainfall
simulator for the determination of soil
erodibilty. Netherlands Journal of
Agricultural Science 35, 407-415.
Lal, R., 1988. Erodibility and Erosivity. In:
Lal, R. (Ed.), Soil Erosion Research
Methods. Soil and Water Conservation
Society, Ankeny, IA, pp. 141.
Luk, S. H., 1979. Effect of soil properties
on erosion by wash and splash. Earth
Surface Processes 4, 241–255.
Mathys, N., Klotz, S., Esteves, M.
descroix, L. Lapetite, J. M., 2005.
Runoff and erosion in the black marls of
the French Alps: Observations and
measurements at the plot scale. Catena
63, 261-281.
Navas, A., Alberto, F., Machin, J. and
Galán, A., 1990. Design and operation
of a rainfall simulator for field studies
on runoff and soil erosion. Soil
Technology 3, 385-397.
Nolan S. C., van Vliet, L. J. P., Goddard,
T.W. and Flesch T.K., 1997. Estimating
storm erosion with rainfall simulator.
Can. J. Soil Sci. 77, 669-676.
Poesen, G. and Ingelmo S. F., 1992.
Runoff and sediment yield from top
soils with different porosity by rock
fragment cover and position, Catena 19,
451-474.
Reisian, R., Charkhaby, A. H., Nowruzi,
Y., Nekovy Mehr, M., 2004. Erodibility
of the soil in Gogak catchment of the
area of Chahar Mahal and Bakhtiari
using Artificial Rainfall simulator (in
Persian). Final Report of Research
Project, Soil Conservation and
Watershed Management Research
Institute, 107 p.
Romero- Díaz, A., Cammeraat, L. H.,
Vacca, A., Kosmas, C., 1999. Soil
erosion at three experimental sites in the
Mediterranean. Earth Surface Processes
and Landforms 24, 1243–1256.
Sadeghi, S. H., Reisian, R. and Razavi, S.
L., 2004. Comparison of runoff and
sediment production on abandoned
agricultural and poor pasture lands (in
Persian). the center of soil conservation
and watershed management, Tehran,
Proceedings of the Third National
Conference on erosion and
sedimentation, pp. 608-611.
Shabani Heidar Abadi, M., Feiznia, S.,
Ahmadi, H., Ghodoosi J., Sareshtehdaei
A., 2004. Land use change effects on
sediment yield (in Persian). the center of
soil conservation and watershed
management, Tehran, Proceedings of
the Third National Conference on
erosion and sedimentation, pp. 65 -71.
Six, J., Paustain, K., Elliott, E. T.,
Combrink C., 2000. Soil structure and
organic matter : I. Distribution of
aggregate-size classes and aggregateassociated carbon. Soil Sci. Soc. Am. J.
64, 681-689.
Sokooti Oskoei, R., Qaiemian N., Jafari
Ardakani, A., Ahmadi A., 2004.
Conversion of pasture lands in the
erosion and sediment yield (in Persian).
the center of soil conservation and
watershed management, Tehran,
Proceedings of the Third National
Conference on erosion and
sedimentation, pp. 340-338.
Talaei, R., Azimi, F., Mesri M., Jafari
Ardakani, A., Ali Akbarzadeh E. and
Imani A., 2005. Investigating physicochemical properties of affecting the 
Journal of Rangeland Science, 2011, Vol. 1, No. 2 Reza Talaei, et al. / 165
fertility of rangeland soils converted to
dry lands of the Gareh Sou watershed in
Ardabil Province (a case studey : Dojag
chay sub-catchment) (in Persian). Soil
Conservation and Watershed
Management Institute, Research center
of Agriculture and Natural Research
center of Ardabil Province. Final Report
of research plan, 131 p.
Valmis, S., Dimoyiannis, D. and Donalatos
N. G., 2005. Assessing interrill erosion
rate from soil aggregate instability
index, rainfall intensity and slope angle
on cultivated soils in central Greece.Soil
and Tillage Research 80(1-2), 139-147.
Vanyompaey, A.J., Govers G. and
Puttemans C., 2002. Modelling land use
changes and their impact on soil erosion
and sediment supply to rivers. Journal
of Earth Surface Processes and
Landforms 27, 481-494.
Walsh, R. P. D., Coelho, C., Elmes, A.,
Ferreira, A. J. D., Gonçalves, A. J. B.,
Shakesby, Ternan, J.L. and Williams A.
G., 1998. Rainfall simulation plot
experiments as a tool in overland flow
an soil erosion assessment, northCentral Portugal. Geoökodynamik19
(3/4), 139-152.
Walt, L.A., 1983. Effects land use change
on soil erosion in the Western Gwydir
Area. J. Cons. New South Wales 39(2),
142 –147.
Wischmeier, W. H., Johnson, C. B., Cross,
B. V., 1971. A soil erodibility
monograph for farmland and
construction sites. Journal of Soil and
Water Conservation 26, 189–193.
Yazdi Samadi, B, Rezaei, A. and
Valyzadeh M., 2005. Statistical designs
in agricultural research (in Persian).
Theran university publications, No.
2346, 764 p.
Yousefi Fard, M., Jalalian, A., Khademi,
H. Hajabasi M. A., 2005. Notrient loss
In different land use estimated by
rainfall simulator. Proceeding of
International Conference on Human
Impacts on Soil Quality Atribute