基于生态位理论及相应测度方法，计算2012—2015年广东省港口产业生态位强度、宽度、重叠度等指标数值。研究结果表明：（1）按照宽度值7个子产业可被划分成优势种、亚优势种、伴生种产业3种类型；水上运输业占据较多的区域资源，对港口产业整体发展贡献程度最大；船舶工业生态位宽度过窄且贡献最小，产业间的整体重叠度处于较低水平。（2）生态位分异度呈逐年递减趋势，产业差异化程度加大，竞争态势趋缓。（3）生态位态值与强度的降序排序结果一致，石油、化学和电力工业目前增长不足；综合来看，水上运输业发展良好，船舶工业发展水平不足。

Based on niche theory and corresponding measurement methods, this paper uses the data of port industry of Guangdong province during year 2012-2015 to calculate the niche width, overlap, differentiation, et al. The results show that:(1)Seven sub industries can be divided into three types according to niche width: dominant industries, sub dominant industries and auxiliary species industries. Water transportation occupies many regional resources and has the largest contribution to the overall development, but the niche width of shipbuilding industry is too narrow and its contribution is smallest, it''s overall overlap between industries is at a low level. (2)The niche diversity is decreasing year by year, the differentiation is increasing and the competition situation is at a gradual stage.(3)The niche state value is consistent with the descending order of niche intensity, the oil, chemical and power industries are growing at a low level. In general, the development of the water transport industry is good, and the development level of the shipbuilding industry is insufficient.

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国家社科基金资助项目：“我国沿海五大港口群港口产业联动研究”（14BJL085）