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罗曼嘉 《中国地理科学(英文版)》1991,1(2):154-165
On the basis of "The Statistical Data of Guangdong Province in 1981" and the 14 selected original variables, 107 counties and suburbs in Guangdong are classified. In the classification, cluster analysis is applied, and the cluster hierarchy of the agro-ecosystem is achieved with a computer. According to output level, planting structure, and input level of energy, there is an evident regionalism in the agro-ecosystem of Guangdong, which presents approximately concentric circles centralized by Guangzhou City. 相似文献
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