GuanghzoulnstituteofGeochemistry;
theChineseAcademyofSciences;
Guangzhou510630;
P.R.China;
InsituteofGeographicalSciencesandNaturalResourcesResearch;
theChineseAcademyofSciences;
Beijing100101;
P.R.China;
珠江三角洲; 时空关系; GIS; 地理信息系统; 生态系统; 人地系统; 遥感; 突发事件;