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    Ecological water demand: the case of the slope systems in the East Liaohe River Basin

    The ecological water demand (EWD) is the least water amount required to maintain the structure and the function of the special eco-system and the temporal scale of a study on the EWD must be a season’s time. B...

    Yan Denghua Ph.D., He Yan, Deng Wei, Hou Youshun in Journal of Geographical Sciences (2003)