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  1. Library Resource
    Artículos de revistas y libros
    Diciembre, 2016
    China

    Soil nitrogen (N) cycling is an important factor in terrestrial ecosystems, including grasslands. Understanding the effects of grazing on nitrogen cycling in grassland ecosystems is critical for better management and for improving knowledge of the mechanisms underlying grassland degradation and can provide basic information for sustainable development in grassland ecosystems. In this study, in situ incubation in intact soil cores was used to measure seasonal changes in soil nitrogen mineralization and nitrification in the meadow steppe of the Hulunber grasslands of northeastern China.

  2. Library Resource
    Artículos de revistas y libros
    Diciembre, 2015
    China

    The Lhoba are a small ethnic group, located in the Tibet Autonomous Region of China. Until 1960, their livelihood was predominantly based on swidden agriculture, hunting, and gathering. To investigate and document the plant species used by the Lhoba, ethnobotanical surveys were conducted in three villages of Nanyi Township in Milin County, Tibet, China.

  3. Library Resource
    Artículos de revistas y libros
    Diciembre, 1997
    Burkina Faso, Sri Lanka, Pakistán, India, Sudán, Egipto, Estados Unidos de América, Níger, Filipinas, China, Indonesia, Nepal, Bangladesh, Colombia, África occidental, Asia, África

    This volume reviews the findings and results of research of the International Irrigation Management Institute during its first decade. The book also reviews several of the institute?s major institutional strengthening activities.

  4. Library Resource
    Documentos de conferencias e informes
    Diciembre, 1994
    India, Bangladesh, China, Indonesia, Nepal, Filipinas, Sri Lanka, Asia

    In this workshop the participants identified five priority areas of concern relative to sustainable management of groundwater irrigation by farmers:1) aquifer drawdown; 2) FMIS groundwaterwater support services, 3) management problems under water-surplus conditions; 4) management problems under water-deficit conditions; 5) management problems in conjunctive use areas .

  5. Library Resource
    Artículos de revistas y libros
    Diciembre, 2014
    Estados Unidos de América, México, España, Marruecos, China, América Septentrional, América central, América del Sur, Europa, África, África septentrional, Asia, Asia meridional

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