基于净初级生产力的能源足迹模型及其与传统模型的比较分析

A new energy ecological footprint model based on net primary productivity and its comparison with traditional model

将净初级生产力和土地利用变化2个新指标纳入传统能源足迹模型,构建了基于净初级生产力的能源足迹模型。应用传统模型和改进后的模型分别计算了1999—2008年的吉林省能源足迹,并对2组结果进行了比较分析。研究结果表明:10年间,采用传统模型计算的吉林省人均能源足迹由0.7908hm2增至1.6770hm2,采用净初级生产力模型计算的人均能源足迹由0.2490hm2增至0.5237hm2。2种模型的计算结果在整体变化趋势和构成顺序上较为一致,但在历年变化速率和具体构成份额上存在一定差别。净初级生产力模型扩展了传统模型的研究范围,并在碳吸收参数选取等方面进行了较大改进,所得结果反映了区域综合碳吸收能力下的能源消费生态环境影响,更符合区域自然和社会实际状况,一定程度上是对传统模型的完善。

Two new indicators,net primary productivity（NPP） and land use change,are brought into traditional energy ecological footprint（EEF） model to construct a modified model named NPP-EEF model.By applying the traditional model and NPP-EEF model,the EEF of Jilin Province from 1999 to 2008 are calculated,and the results between the two models are compared and analyzed.The results show that during the 10 years,the EEF per capita increases from 0.790 8 hm2 to 1.677 0 hm2 by the traditional model,while the EEF per capita increases from 0.249 0 hm2 to 0.523 7 hm2 by NPP-EEF model.Although the EEF and their components of two models have the consistent trend basically,the annual change and distribution rates of the EEF both represent some differences.Comparing with the traditional model,NPP-EEF model extends the study range and modifies the parameter of carbon absorption.Moreover,the results of NPP-EEF model which reflects the eco-environmental impacts of energy consumption based on regional comprehensive carbon ability are more appropriate for according with the real condition of regional nature and society,being able to improve the traditional model to some extent.