基于DEA模型的中国林业投入产出效率评价

【关键词】:林业投入;;林业产出;;效率评价;;DEA
【摘要】:林业的高效发展是实现我国生态、经济、社会可持续发展的重要举措之一。为了促进林业发展,我国政府对林业的投入逐年递增。本文运用DEA评价模型,对1993年-2010年间我国林业投入产出效率进行测算和分析。测算结果表明:1993年-2002年间,我国林业投入产出效率总体较高,综合效率均值为0.994,但2003年-2010年间综合效率均值下降到0.932,且波动较大;林业劳动力投入和林业第一产业产值对我国林业投入产出的效率影响较大。结合我国林业发展的现实背景分析发现,林业投资资金的利用效率不高、人力资源投入不足和林业经济发展水平偏低导致了近几年林业投入产出效率的降低。
The efficient development of forestry is vital to sustainable progress in ecology, economics and society in China. Funds invested in forestry by government have increased greatly to drive comprehensive development. Current correlation research on forestry input-output efficiencies are characterized by a single output index system, reflecting the development of forestry economics and local forestry efficiency. However, there has been no valuable empirical exploration of the ecological effects, economic effects and social effects of forestry with respect to national forestry input-output efficiency. In order to reflect national input-output forestry efficiency this paper employs the DEA model -an efficiency evaluation method based on the concept of relative efficiency used to evaluate and sort decision-making units of the same kind – to estimate and analyze relative input-output efficiency from 1993-2010. Our model uses forest fixed asset investment and number of forestry employees as input indices and production value of the forest first industry, afforestation area and farmer per capita income as output indices. We divided technical efficiency into pure technical efficiency and scale efficiency, and on the SE-DEA model we analyze the super-efficiency of forestry. Results show that the input-output efficiency of forestry has been relatively high since 1993, but fluctuated dramatically in recent years and trended downtrend. Forestry input-output efficiency in China has been impacted by labor force inputs as well as the production value of the forestry first industry. Efficiency underwent a downward trend triggered by inefficient utilization of forestry investment capital, insufficient supplementation of human resources and a low-level forestry economy. Based on these data we propose that the government pay more attention to the stable development of forestry, forestry investment management and production management to strengthen forestry science and technology. The forestry economy should be further developed under the protection of forest ecology by exploring scientific forestry public policy systems that promote the sound development of a forestry ecological economy.