赣江流域丘陵山区资源经济结构梯度的数量分析

本文应用主成分分析方法(PCA)对赣江流域丘陵山区县级系统的资源经济结构梯度进行了分析。根据35个县市资源和经济结构变量资料分析表明,各县市之间的系统差异主要由气候条件、土壤成分、农业集约化经营水平及城市化程度所决定;这些决定因素在地理空间分布上存在着一定的连续性,并呈梯度变化:即资源结构以吉泰盆地为中心向南、西、北方向辐射;地形和地势由河谷平原向低丘、高丘、低山和中山过渡;生产经济结构类型也由盆地的单纯种植业型向农牧型、农牧副型、多种经营型和山地林业型变化。据此可把该流域丘陵山区分为上游山区和上游南部丘陵区、中游南部丘陵区和西部山区、北部丘陵区及下游丘陵区6大区。最后根据资源经济结构梯度和分区结果提出本流域丘陵山区的资源开发战略方向为以浙赣铁路线上的下游丘陵区和以赣州市为依托的上游北部丘陵区为中心向中游的吉泰盆地和西部山区及上游的南部山区定向开发。

QUANTITATIVE ANALYSIS OF THE GRADIENT OF THE RESOURCE AND ECONOMY STRUCTURE IN THE HILLY AND MOUNTAINOUS AREA OF THE GANJIANG RIVER BASIN, JIANGXI PROVINCE

This paper deals with the gradient of the resource and economy structure at the county level in the hilly and mountainous area of the Ganjiang River basin by means of the Principal Component Analysis (PCA). Firstly, an analysis of the data about the resource and economy structure of 35 counties is made. It shows that the systematical differences among the counties are caused by climatical conditions, terrain composition, and the level of intensive farming. The spacial distribution of these decisive factors is that they take the Jitai basin as a centre and change sucessively and gradually in all directions, Secondly, the whole hilly and mountainous area is divided into 6 districts on the basis of the systematical differences among the counties and their gradient of the resource and economy structure. And lastly, the authors offer an opinion on the resource development of the hilly and mountainous area of the Ganjiang River basin.