Based on the man-grain relationship, it established a LCCI(Land Carrying Capacity Index) model, quantitativly evaluated the present population carrying capacity of the land resources in the Han River( in Hubei Province) from three aspects: counties, prefecture-level cities, and drainage basins.The result revealed the geographical features and spatio-temporal evolution pattern of land carrying capacity in different areas of Hubei Province, discussed the coupling relationship between land resources, grain and the population.%土地资源承载力是研究区域人口消费与食物生产、人类需求与资源供给间的平衡关系问题,研究土地资源承载力能为区域发展和生态建设提供科学依据和决策支持。文章以人粮关系为基础,建立土地资源承载指数(Land Carrying Capacity Index,LCCI)模型,从县、地级市、流域三个尺度定量评价了汉江流域湖北段的土地资源现实人口承载力。土地资源承载力的研究结果揭示了汉江流域湖北段不同地区土地资源承载力的地域特征与时空演变格局,反映出土地资源、粮食、人口的耦合关系,为湖北省粮食安全和区域可持续发展提供参考。
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