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    • Rangeland Ecology & Management, Volume 62, Number 4 (July 2009)
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    Differences in Net Primary Productivity Among Contrasting Habitats in Artemisia ordosica Rangeland of Northern China

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    Author
    Li, Chunping
    Sun, Osbert Jianxin
    Xiao, Chunwang
    Han, Xingguo
    Issue Date
    2009-07-01
    Keywords
    Artemisia ordosica
    net primary production (NPP)
    Ordos Plateau
    soil organic carbon (SOC) density
    turnover rate
    
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    Citation
    Li, C., Sun, O. J., Xiao, C., & Han, X. (2009). Differences in net primary productivity among contrasting habitats in Artemisia ordosica rangeland of Northern China. Rangeland Ecology & Management, 62(4), 345-350.
    Publisher
    Society for Range Management
    Journal
    Rangeland Ecology & Management
    URI
    http://hdl.handle.net/10150/643038
    DOI
    10.2111/07-084.1
    Additional Links
    https://rangelands.org/
    Abstract
    Artemisia ordosica Krasch. is a semishrub native to the Ordos Plateau of Inner Mongolia, northern China, and forms a unique and dominant vegetation type in the sandland of the region. To determine the variation of productivity in A. ordosica rangeland, we investigated net primary production (NPP), fine root turnover, soil microbial C (Cmic), and soil organic carbon density (SOCd) on sand dunes differing in mobility (i.e., fixed, semifixed, and shifting sand dunes) in Mu Us sandland. We found that, on an area basis, the NPP, SOCd, Cmic, and fine root turnover rates all increased with increasing vegetation cover. However, the ratios of root NPP to total NPP (RMRN) increased with declining vegetation cover. Total NPP varied markedly among habitats and ranged from 18.3 g m-2 yr-1 for communities on the shifting sand dunes to 293.8 g m-2 yr-1 for communities on the fixed sand dunes; whereas the rates of fine root turnover varied from 0.16 yr-1 to 0.54 yr-1. Our study demonstrated that habitat change in sandland has significant impacts on ecosystem productivity by affecting many related aspects of NPP. From the perspective of biomass production, protection of the semifixed dunes from degradation should be taken as a higher priority than trying to convert shifting sand dunes to semifixed sand dunes; whereas conversion of semifixed sand dunes to fixed sand dunes would appear to be a much easier task than restoring shifting sand dunes. 
    Type
    text
    Article
    Language
    en
    ISSN
    0022-409X
    ae974a485f413a2113503eed53cd6c53
    10.2111/07-084.1
    Scopus Count
    Collections
    Rangeland Ecology & Management, Volume 62, Number 4 (July 2009)

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