桂西南喀斯特山区土地承载力预测

FORCARSTING TO THE LAND SUPPORTING CAPABILITY OF POPULATION IN KARST MOUNTAIN AREA OF SOUTHWEST GUANGXI, CHINA

土地是人们获取食品的最便于使用的最经济的资源。可是，由于土地位置的不可移动性、数量有限性、与及受气候因子影响的产量的不稳定性等特征，使土地生产力在一定时间、一定技术经济条件下，不可能无限制地满足人们的食物需求。因此，研究和了解不同时期特定区域的土地生产力与人口合理承载量的动态关系，对制定该区域人口、经济发展规划将提供重要佐证。本文采用定性定量相结合的方法对桂西南喀斯特地区未来不同时期、不同人口发展方策、不同生活消耗标准的土地承载能力进行预测，其结果可为该地区人口、经济发展战略研究提供科学依据。

The earth is the most convenient and economical resource from which People get food. However, because of the characteristics such as unmovability of earth locations, limitation of quantity and unstability of out-pus influenced by the weath etc, the earth, in a given period of time and under certain econemic and technoligical conditions, can not satisfy people's unlimited need for food. To study and to grasp the dynamic relation between the earth's ability to yield and the reasonable population endurance in different time and in certain areas can supply important evidences for the planning of developing regional population and economy. This article forecasts the earth bearing capacity of Karst region in southeast of Guangxi. Using the methed of quantitative analysis combining with qualitative analysis, this article forecasts the earth bearing capacity in different future Periods of time, in different pepulation developing schemes and under different life-consuming criterions. Therefore the restults can provide scientific evidences for the diveloping strategic research of population and economy in that region.