中文摘要：

相对于长江流域和黄河流域而言，华南地区先民生活方式的了解一直较为缺乏。广东湛江鲤鱼墩遗址人骨的C和N稳定同位素分析，显示此遗址的先民主要以海生类资源为食，陆生资源（包括可能的块茎类原始农业和动物）只占次要地位。通过与约同时代黄河流域、长江流域先民的稳定同位素数据比较，可以看出，早在6000年前，我国先民的生活方式就已出现3大类型。

英文摘要：

Compared with that in Yangtze River Valley and Yellow River Valley, human lifestyle in South China has been little known. In this paper, An analysis of the carbon and nitrogen stable isotope of the human bones from the Liyudun site, Zhanjiang, Guangdong, indicates that the humans mainly lived on marine resources, and that the terrestrial resources, including the possible tuber agriculture and animals, only played a minor role in human diets. Through comparising with the stable isotopic data from those almost contemporary sites located in Yellow River Valley and Yangtze River Valley, there exists three categories of human lifestyle before 6000 years in South China.