Research on Carbon Footprint for Management Activity of Urban Modern Agriculture in Beijing——A Case Study of Pyrus ussuriensis Maxin. cv. Jingbaili Orchards in Mentougou District

doi:10.11924/j.issn.1000-6850.casb15080042

Abstract

Abstract: In order to build the regulation system for low-carbon agriculture and provide the basis for the energy conservation and emission reduction of urban modern agriculture management activity in Beijing through systematical estimation of carbon emission, the authors evaluated six Pyrus ussuriensis Maxin. cv. Jingbaili orchards in Mentougou district based on ten years’production data and the basic theory and study method of agricultural carbon footprint. The results showed that the average carbon footprint of the six Jingbaili orchards varied from 118.71 to 513.23 kg Ce/(hm2·a), and the carbon cost of fresh fruits was 0.12 to 0.27 kg Ce/kg. As to the composition of carbon footprint in these orchards, 16.97%- 83.20% came from the electricity consumed by irrigation, 0.00%-63.12% was discharged by chemical fertilizer, 8.68%-50.18% was caused by diesel oil and 2.09%-7.39% was attributed to pesticides, respectively. In addition, the amount of electricit consumption or nitrogenous fertilizer showed a positive correlation with the total carbon footprint of each orchard. Therefore, the carbon footprint could be effectively reduced by the implementation of an economic and precise system of irrigation and fertilization, and by building rainfall flood project according to local conditions.

CLC Number:

S859.84

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