[1]School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China;
[2]Faculty of Horticulture, Chiba University, Chiba 271-8510, Japan;
[3]School of Geography and planning, Sun Yat-sen University, Guangzhou 510275, China;
珠江三角洲; 地下水; 重金属; 离子; 垃圾渗滤液; 珠三角地区; 珠海; 广州;