TY - Forest and Grassland Resources Research A1 - CUI Lijuan, ZHAO Xinsheng, LI Shengnan, ZHANG Manyin, ZHANG Yan, LI Wei, WANG Yifei T1 - Security Analysis of the Ecological Water Demand of Beijing Wetland Parks Y1 - 2012-02-28 JF - Forest and Grassland Resources Research JO - Forest and Grassland Resources Research SP - 81 EP - 86 VL - 0 IS - 1 UR - http://www.lyzygl.com.cn N1 - ER -