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    • Rangeland Ecology & Management, Volume 63 (2010)
    • Rangeland Ecology & Management, Volume 63, Number 4 (July 2010)
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    An Assessment of Nonequilibrium Dynamics in Rangelands of the Aru Basin, Northwest Tibet, China

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    Author
    Dorji, Tsechoe
    Fox, Joseph L.
    Richard, Camille
    Dhondup, Kelsang
    Issue Date
    2010-07-01
    Keywords
    biodiversity
    grazing gradient
    rangeland assessment
    rangeland ecosystem management
    species diversity
    
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    Citation
    Dorji, T., Fox, J. L., Richard, C., & Dhondup, K. (2010). An assessment of nonequilibrium dynamics in rangelands of the Aru basin, Northwest Tibet, China. Rangeland Ecology & Management, 63(4), 426-434.
    Publisher
    Society for Range Management
    Journal
    Rangeland Ecology & Management
    URI
    http://hdl.handle.net/10150/642803
    DOI
    10.2111/REM-D-09-00011.1
    Additional Links
    https://rangelands.org/
    Abstract
    An assessment of nonequilibrium rangeland dynamics was conducted in the Aru basin, a semiarid site located in the very dry northwest part of the Chang Tang Nature Reserve, Tibet, China. A grazing gradient approach was used to examine the effects of different livestock grazing intensities on vegetation, providing data to determine if plant-herbivore interaction has been a major structuring force of the plant community and thus to indicate what type of dynamic might apply in the study area. No significant differences were found between a highly grazed site and a lightly grazed site in vegetation cover, standing biomass, and Shannon-Wiener species diversity index of total, graminoid, forb, and tomtza (Oxytropis glacialis Benth. ex Bunge) functional groups, with the exception that tomtza coverage was significantly higher at the highly grazed (1.04%) than at the lightly grazed site (0.02%). Grazing intensity alone did not explain a significant amount of variation in the plant species data. These results indicate that a dominance of nonequilibrium dynamics appears to be the case in the basin, probably one of the least-arid sites in the northwest Chang Tang region of the Tibetan Plateau. Thus, opportunistic livestock management strategies adapted to variable vegetation production from year to year, rather than the setting of a rigid stocking rate that assumes a stable carrying capacity, is probably the most plausible approach for managing livestock and its relationship to biodiversity values in this region. 
    Type
    text
    Article
    Language
    en
    ISSN
    0022-409X
    ae974a485f413a2113503eed53cd6c53
    10.2111/REM-D-09-00011.1
    Scopus Count
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    Rangeland Ecology & Management, Volume 63, Number 4 (July 2010)

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