应用生态学报2017，Vol.28Issue(8)：2545-2553,9.DOI:10.13287/j.1001-9332.201708.020
基于“氮补偿”机制及数据包络分析的活性氮减排评价——以京津冀区域为例
Evaluation of reactive nitrogen emissions reduction in Beijing-Tianjin-Hebei agglomeration based on ‘ N offset’ mechanism and data envelopment analysis
摘要
Abstract
The rapid development of urbanization has brought the huge ecological pressure and serious environmental pollution,resulting from direct and indirect emissions of anthropogenic reactive nitrogen to atmosphere and hydrosphere during nitrogen consumption.Based on the quantitative analysis of reactive nitrogen emissions by Beijing-Tianjin-Hebei agglomeration,we constructed an evaluation index for annual reactive nitrogen removal efficiency of this region by employing data envelopment analysis.Then we attempted to put forward low-nitrogen development countermeasures based on ‘N offset’ mechanism for the sustainable development.The results showed that the total reactive nitrogen emissions of Beijing-Tianjin-Hebei agglomeration slightly decreased with fluctuation during urbanization in 2004-2014.Hebei Province was the main contributor to nitrogen emission,occupying 79％-84％ and 74％-79％ of nitrogen loss to atmosphere and hydrosphere.The main sources of emission were agricultural activities,and then turned to industrial activities and residential livelihood.The impacts of urbanization on reactive nitrogen emission intensity of each region were different.The annual emission intensity of this agglomeration was 5.8 t N · km-2.Beijing City owned the highest of emission reduction efficiency,followed by Hebei Province and Tianjin City.The keys for overall low-nitrogen urbanization were supposed to be the reduction in the emissions intensity of Hebei Province and the improvement in emission reduction efficiency of Tianjin City.The countermeasures toward emission reduction,basing on collaborative ‘ N offset’ mechanism,would contribute to the reciprocity among Beijing-Tianjin-Hebei agglomeration in emission reduction during sustainable development.关键词
城市化/活性氮/数据包络分析/氮补偿/京津冀区域Key words
urbanization/reactive nitrogen/data envelopment analysis/nitrogen offset/Beijing-Tianjin-Hebei agglomeration引用本文复制引用
冼超凡,王莉雁,逯非,郑华,欧阳志云..基于“氮补偿”机制及数据包络分析的活性氮减排评价——以京津冀区域为例[J].应用生态学报,2017,28(8):2545-2553,9.基金项目
本文由国家自然科学重点基金项目(71533005)和中国科学院青年创新促进会项目资助 This work was supported by the National Natural Science Foundation of China (71533005) and the Youth Innovation Promotion Association of Chinese Academy of Sciences. （71533005）
