关键词: 土地承载力, 土地生产力, 人均营养标准, 杂谷脑河流域

Abstract: [Objective] Studying land carrying capacity can provide a scientific basis for regional sustainable development. [Method] The Zagunao river basin in the upper reaches of Minjiang river was selected as the research object in this stuty. Socio-economic development was divided into three levels and per capita nutrition was also divided into three levels by per capita nutrient intake. The land carrying capacity of the Zagunao river basin was estimated according to per capita nutrition standard. [Results] The land carrying capacities of the Zagunao river basin were 60.6, 54.3, and 39.2 thousand people, respectively, at the levels of adequate food and clothing, well-off life and developed standard of living. However, the population of the Zagunao river basin was 45 761 people by the end of 2011. [Conclusion] The rusults indicate that the land carrying capacity of study area is surplus at the levels of adequate food and clothing and well-off life. Whereas, a deficit in land carrying capacity occurs when socio-economic level reaches developed standard.

Key words: land carrying capacity, land productivity, per capita nutrition standards, Zagunao river basin