绿色食品产地评价——以京津冀永清地区为例

胡庆海, 王学求, 田密, 吴慧, 柳青青, 李俊华, 盘炜, 王丽君

Assessment of green food production areas: A case study of the Yongqing area in the Beijing-Tianjin-Hebei region

HU Qing-Hai, WANG Xue-Qiu, TIAN Mi, WU Hui, LIU Qing-Qing, LI Jun-Hua, PAN Wei, WANG Li-Jun

图1 永清县土壤实际采样点位[10-11]

Fig.1 Soil sampling sites of the Yongqing County[10-11]