喀斯特峰丛洼地系统土地利用与人口聚落分布─—以贵州为例

KARST PEAK CLUSTER-DEPRESSION SYSTEM─ LAND USE,POPULATION AND SETTLEMENT DISTRIBUTION(AN EXAMPLE FROM GUIZHOU)

喀斯特峰丛洼地地区，每个洼地都与周围峰丛构成封闭的地域系统，辐聚型的物质运动导致了系统内物质分布呈独特的不规则垂直同心环带结构。受地形和地表物质（主要是土壤）分布的影响，土地利用在峰丛和洼地部分各不相同，狭小、分散、比重小的有效土壤使系统生产力偏低，严重制约了系统人口密度和规模的增加，使该区域人口空间聚集度低，社会经济长期处于贫穷落后状态。改变这一状况的关键在于改善交通条件，增加内部与外部、内部与内部的联系性并使土地利用科学化和合理化。

Each depression together with peak cluster around forms a close areal geosystem. Inkarst peak cluster-depression the radial motion of matter causes itself to be distributed in aspecial structure with irregular vertical concentric circular zone. Influenced by the relief oflandform and surface material(soils mainly)distribution pattern,land use in depressions isdifferent from that on peak clusters. Narrow disconnected space and poor soils in the systemmake it underproductive,impose constraint to the growth of population,render the popula-tion less agglomerated and the social economy remained underdeveloped for centuries. Keymeasures to help changing the situation are proposed to be improving areal transportationand communication,strengthening the exchange between interior and interior,as well as in-terior and exterior.