Bravo-Espinosa, M.

Etchevers Barra, J.

Medina, L.

Prat, Christian

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SOIL EROSION AND RUNOFF OF AN ACRISOL UNDER FOUR AGRONOMIC
TREATMENTS IN MEXICO
BRA VO-ESP/NOSA Miguel", MEDINA Lenin ", PRAT Christian" and ETeIlEvERS BARRA Jorge'
'CENAPROS-lNlFAP, Mexico,
bravo_miguel@infosel.net.mx, lenin_medi:la72@hotmail.com
biRD, France; prat@mpl.ird.fr
'Cl', Mexico, jetchev@colpos.mx
The REVOLSO Project (Alternative Agriculture for a Sustainable Rehabilitation of
Dcteriorated Volcanic Soils in Mexico and Chile, 2002-2006. European
Union lNCO/DEV Project #lCA4-CT-200 1-10052) aims at finding technological solutions,
adapted to socio-economic local conditions, to rehabilitate unproductive and erodible
deteriorated volcanic soils in a sustainable way·(http://www.ird.teledetection.fr/revolso).
This work presents the main results of one year of runoff and soil erosion measurements
on an Acrisol in Morelia district, Michoacan State, Mexico.
Four treatments are tested on 1000 m2 plots: (I) C-Conventional: faba beans as a
rnonoculture, with low agronomic inputs; (2) Cl-Conventional improved: faba beans + Vicia
sativa, with high inputs; (3) O-Organic: faba beans as a moncculture, applying 15: ha"1 of cow
manure, and (4) F-Fallow system, which had the native vegetation with free grazing animals.
Rainfall parameters, soil moisture and bulk density, infiltration, soil rugosity, plant cover,
and crop developmental sequence are measured as well as soil, sediment, and water
parameters as pH, EC, CEC, N, 1', K. Every plots are equipped with an H-f1ume and a water
level recorder. The affluent is conducted to a rotating tank of 2000 I seated on two electronic
weight cells. When it is full, 2% of the excess of water is collected in another reservoir. Water
and sedimcnts samples are analyzed.
The rainy season started late at the end of June and finished in November. The annual
rainfall was about 1320 mm, 32% more than the mean value; 128 days present rainfalls but
only 22 generated runoff. 15 rain falls had more than 30 mm; 10 rain falls had an intensity
between 10 to 20 mmth", four had between 20 to 50 mm'th' and the strongest had 62, 83, 91
and 141 mmrh'.
Annual erosion rates ranged from 1 to 14 t*ha· I . The F treatment produced the lowest
erosion rate but the highest runoff rate. The 0 treatment got the highest erosion, followed by
the Cl (13 t*ha· l ) and the C (11 t*ha· I ) .
Keywords: soil erosion, faba bean, fallow, Acrisol, Mexico
EFFECT OF LAND USE CHANGE ON SOIL QUALITY AND SOIL EROSION
IN A TROPICAL DECIDUOUS ECOSYSTEM (CHAMELA, MEXICO)
H. COTLER 1and P. ORTEGA 2
1lnstituto Nacional de Ecologia - SEMARNAT, Mexico (hcotler@ine.gob.mx)
2 Instituto de Geologia, Universidad Nacional Autonorna de Mexico
(mpol@geologia.unam.mx)
In the last 50 years, the tropical deciduous forest in Mexico has been severely transformed
into pasture. This conversion leads water soil erosion as a main degradation process. Soil
aggregates and their stability have an influence on physical properties, resistance to erosion
and the soil's ability to transmit liquids, solutes, gases and heat, which have a strong influence
54 JAG Regional Geomorphology Conference - Mexico
International Association of Geomorphologists
Regional Geomorphology Conference
Mexico 2003
Geomorphic hazards:
Towards the prevention of disasters
ABSTRACTS
Mexico City, October 27 - November 2, 2003
Hosted by
Mexican Society of Geomorphology
Institute of Geography, UNAM
POSTER CONTRIBUTIONS
20.BADLANDS IN SOUTHERN BASILlCATA. EXAMPLES OF LAND
DEGRADATION AND REMODELLING
8entivenga M. Boenzi F, Capolonqo D.. Piccarre!a r\l
21.S01L EROSION AND RUNOFF OF AN ACRISOL UNDER FOUR
AGRONOMIC TREATMENTS IN MEXICO
8ravo-Espinosa iVl, fV1edina L-enin . Prat Christian and E~che'lers Barra J.
,
22.ERODIBILITY, AGGREGATE STABILITY ANALYSIS AND AGGREGATE
CLASSIFICATION OF GYPSIFEROUS SOILS FROM THE
MIDDLE EBRO BASI~~ (SPAi~~)
G. Desir: C fV1arin
23.ERODIBLlTY OF ANDISOLS. - IS THE K FACTOR ESTlrvlATION
SUITABLE FOR VOLCANiC ASH SOILS?
Daniel Geissert
24, DISCONTINUITIES IN POLlCYCLlC PALEOSOLS AND LANDSCAPE
STPBILlTY OF THE NEVADO DE TOLUCA VOLCANO,
C Jasso J. Gama ,S Sedov E Solleiro. anc J Rvas
25.USE OF SATELLITE IMAGES FOR THE CHARACTERIZATION OF THE
EROSIONAL PROCESSES IN THE CHICHINAUTZIN RANGE
VOLCANIC FIELD (MEXICO)
C Ncyola , [1;1. Foct , and C. fvlerirg
26,CLAY TRANSLOCATION IN A YOUNG COLLUViAL COVERING
STRATUM iN THE CENTRAL HIGHLAND OF MEXICO - RESULTS OF
MICROMORPHOLOGICAL INVESTIGATIONS
Poetsch, Th, Werner G., Sedov, S. and Solleiro. E
27.CHANGES OF THE SEDIMENTATION RATE CAUSED BY LAND-USE
DEVELOPMENT IN KUSHIRO MIRE, HOKKAIDO, NORTH=:RN JAPAN
Shigeru fV1izugaki, Futoshi Nakamura and Tohru Araya


Geomorphic hazards : towards the prevention of disasters : abstracts

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