关键词: 结构方程模型, 农业生态经济系统, 耦合关系, 农户, 吴起县, 空间统计特征, 城市热岛, 时空演化, 杭州

Abstract: Based on the peasant household investigation in Wuqi County in 2008, the coupling relationship of agricultural eco-economic system in the County was analyzed by using structural equation model. It was shown that agricultural resources and industrial situation had definite effects on the system coupling, with the influence coefficient being 0.14 and 1.00, respectively. There was a negative correlation coefficient (-0.11) between the agricultural resources and industrial situation, suggesting that the industrial development in the City was not based on the effective utilization of agricultural resources, and the agricultural resources hadn’t direct effects on the economic benefit. The direct path coefficient between the industrial situation and economic benefit was -2.95, and the total path coefficient was only 0.23, illustrating that the industrial development in the City was mainly relied on the utilization of other energy and material resources. From the viewpoint of the coupling relationship of the agricultural eco-economic system, it was considered that the current agricultural ecosystem in the County was unstable, and less depended on outside resources. In other words, there was a potential crisis in the process of building and forming a well coupled agricultural eco-economic system. Therefore, this county should improve its utilization of agricultural resources through developing its pasture and forest industries.

Key words: structural equation model, agricultural eco-economic system, coupling relationship, peasant household, Wuqi County, spatial statistical feature, urban heat island (UHI), spatial-temporal evolution, Hangzhou.