关键词: 分布, 森林, 组成, 树种, 科间关联

Abstract: The relationship among environmental pollution, resource consumption and economic growth has always been a hot research focus in environmental economics and resources economics. But there are few researches combining these relationships as a whole, especially for smallscale areas. The purpose of this article is to investigate the coupling relationship of the economic growth, resource consumption and environmental pollution. With the data of pollution discharge, resource consumption and per capita GDP from 2000 to 2013 in Qingyang City, Gansu Province, the cointegration test, variance decomposition and impulse response function based on vector autoregressive (VAR) model were employed. The results showed that there was a longterm equilibrium among economic growth, environmental pollution and resource consumption. The chemical oxygen demand and soot emissions had no significant effect on the economic growth, but the sulfur dioxide emission, energy consumption and water consumption had a great influence on the economic growth. The economic growth in Qingyang City was at the expense of increased pollutants emissions and resource consumption, and thus it was an important reason for environmental pollution and resource consumption. This indicates that economic growth has a strong dependence on resource and environment. A decoupling relationship has not occurred among economic growth, resource consumption and environmental pollution, while a coupling relationship of mutual promotion exists.

Key words: forest, composition, tree species, association between families., distribution