摘要
【目的】对土地承载力的系统研究,可为区域可持续发展提供科学依据。【方法】选取岷江上游杂谷脑河流域为研究对象,以社会经济处于不同发展阶段的人均营养素摄入量作为人均营养标准,对杂谷脑河流域的土地承载力进行定量估算。【结果】结果显示,在温饱、小康、发达水平条件下,杂谷脑河流域土地分别可以承载6.06、5.43、3.92万人,而2011年年末杂谷脑河流域总人口为45 761人。【结论】结果表明,当社会经济处于温饱、小康水平,该区域土地承载力处于盈余状态;当社会经济处于发达水平,土地承载力将出现赤字。
[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 riv- er 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 in- take. 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 capaci- ty 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.
出处
《四川农业大学学报》
CSCD
北大核心
2012年第4期451-455,共5页
Journal of Sichuan Agricultural University
基金
国家自然科学基金(41071115)
四川省科技支撑计划(2011sz0240)
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
land carrying capacity
land productivity
per capita nutrition standards
Zagunao riv- er basin
