Journal of Ecology and Rural Environment ›› 2019, Vol. 35 ›› Issue (4): 409-418.doi: 10.19741/j.issn.1673-4831.2018.0431

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Spatio-Temporal Change in Agricultural Carbon Production Budget and Evaluation of Agricultural Carbon Emission Equity in Luzhou City

LUO Hong1,2, LUO Huai-liang1,2, LI Chao-yan1, XIONG Jing-yun1   

  1. 1. Geography and Resources Science College of Sichuan Normal University, Chengdu 610068, China;
    2. Key Laboratory of Southwest Land Resources Evaluation and Monitoring of Ministry of Education of China, Sichuan Normal University, Chengdu 610068, China
  • Received:2018-07-23 Online:2019-04-25 Published:2019-04-25

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Abstract:

Based on spatial data of Luzhou City, the parameter estimation and IPCC inventory estimation methods were used to estimate the carbon budget of agricultural production in the city from 2006 to 2015. The equity of regional agricultural carbon emissions has been evaluated using the ecological carrying and economic efficiency coefficients. The results show that:(1) Within the ten years, the city's agricultural carbon absorption had increased from 166.47×107 kg to 188.38×107 kg, while rice had the largest share of carbon sequestration. The carbon absorption intensity from agriculture rose from 8×103 kg·hm-2 in 2006 to 8.96×103 kg·hm-2 in 2015. Among the areas in Luzhou City, carbon absorption intensity was significantly weakened in Longmatan and Xuyong, while that from Luxian and Hejiang increased significantly. (2) During the study period, the city's carbon emissions from agriculture reduced from 144.02×107 kg to 127.71×107 kg, of which livestock breeding was the largest source of emissions. The carbon intensity of agriculture fell from 6.92×103 kg·hm-2 in 2006 to 6.07×103 kg·hm-2 in 2015, with intensities from Longmatan, Naxi, Xuyong, and Gulin weakening significantly, while the intensity from Luxian significantly increased. (3) The ecological carrying capacity of agricultural carbon emissions was the largest in Jiangyang, followed by Longmatan, Luxian, Hejiang, Naxi, Gulin and Xuyong. Agricultural production efficiency ranked as following:Longmatan > Jiangyang > Luxian > Hejiang > Naxi > Gulin>Xuyong. (4) A cluster analysis of agricultural carbon emission equity shows that the northern plains to certain extent shared the pressure of other areas of the city on reducing agricultural carbon emission. But the carbon emissions from agricultural production in the southern mountainous areas of the city increased the pressure on the city for the reduction of agricultural carbon emission.

Key words: agricultural carbon budget, equity evaluation, Luzhou City

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