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    • Journal of Range Management, Volume 42 (1989)
    • Journal of Range Management, Volume 42, Number 5 (September 1989)
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    Infiltration and sediment production as affected by soil surface conditions in a shrubland of Patagonia, Argentina

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    Author
    Rostagno, C. M.
    Issue Date
    1989-09-01
    Keywords
    runoff
    shrubs
    eroded soils
    Argentina
    
    Metadata
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    Citation
    Rostagno, C. M. (1989). Infiltration and sediment production as affected by soil surface conditions in a shrubland of Patagonia, Argentina. Journal of Range Management, 42(5), 382-385.
    Publisher
    Society for Range Management
    Journal
    Journal of Range Management
    URI
    http://hdl.handle.net/10150/645034
    DOI
    10.2307/3899544
    Additional Links
    https://rangelands.org/
    Abstract
    Infiltration and sediment production of eroded and uneroded shrub interspace soils were evaluated in December 1986 in a severely grazed, arid range site in northeastern Patagonia. A rainfall simulator and small plots were used to collect the data. A desert pavement embedded in a vesicular crust characterized the surface soil of the eroded areas that occupy the lowest position in the microtopographic pattern. A granular, fine, and weak structured A horizon characterized the soil of uneroded areas. Slopes were similar for the eroded and uneroded areas. Surface soil bulk density, electrical conductivity, clay and organic matter content were significantly greater for the eroded than for the uneroded soils. Litter cover was significantly higher for the uneroded soils. Plant cover, although higher for the uneroded areas, was low (< 5%) for both eroded and uneroded areas. Mean infiltration rate at the end of 35 min, with the soil initially dry, was 0.8 and 6.1 cm/hr for the eroded and uneroded soils. respectively. For the soil initially at field capacity, infiltration decreased to 0.6 cm/hr and 4.1 cm/hr. Soil losses were higher from the eroded areas (606 kg/ha and 687 kg/ha) than for the uneroded areas (291 kg/ha and 556 kg/ha) when the soils were initially dry and at field capacity, respectively. Regression analysis indicated infiltration rate was positively related to litter cover and negatively related to gravel cover, whereas sediment production was negatively related to bulk density, plant, and gravel cover characteristics of the site.
    Type
    text
    Article
    Language
    en
    ISSN
    0022-409X
    ae974a485f413a2113503eed53cd6c53
    10.2307/3899544
    Scopus Count
    Collections
    Journal of Range Management, Volume 42, Number 5 (September 1989)

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