1.College of Resources and Environmental Sciences,China Agricultural University,Beijing 100193,China
2.State Key Laboratory of Soil Environmental Management and Pollution Control for Environmental Protection,Nanjing Institute of Environmental Sciences,Ministry of Ecology and Environment,Nanjing 210042,China
3.College of Engineering,China Agricultural University,Beijing 100083,China
4.Institute of Agricultural Engineering,Heilongjiang Academy of Land Reclamation Sciences,Harbin 150038,China
5.Institure of Agricultural Resources and Environment,Xinjiang Academy of Agricultural Sciences/Key Laboratory of Agro-Environment in Northwest Oasis,Ministry of Agriculture and Rural Affairs,Urumqi 830091,China
To address the challenge between greenhouse gas emissions reduction and animal husbandry development, this study developed a method to estimate the atmospheric bearing capacity of livestock and poultry farming based on greenhouse gas emissions. The intensity of greenhouse gas emissions was calculated, and by combining it with the threshold values, the regional animal breeding potential was assessed through simulation. The results showed that: 1) From 2010 to 2021, the greenhouse gas emissions intensity in livestock and poultry farming in Xinjiang Production and Construction Corps (XPCC) displayed a “first rising and then falling” trend; By 2021, the intensity of emissions reached 1 544.50 kg/hm2, with N2O emissions from farmland soil and CH4 emissions from animal intestines being the main emissions sources. Similarly, Beidahuang Group (BG) exhibited a “first rising and then falling” trend. The intensity emissions was 3 125.40 kg/hm2 on 2021, which was largely due to CH4 emissions from rice fields and N2O emissions from farmland soil. 2) The livestock and poultry farming in both XPCC and BG remained within the atmospheric bearing. The future potential estimated, measured in pig equivalents, is 4.234 million to 21.17 million for XPCC and 7.335 million to 36.675 million for BG, respectively. It was recommended that the two regions should focus on promoting emissions reduction technologies for rice fields, efficient water and fertilizer management, and advancing high-quality mechanization in agriculture and animal husbandry, as well as enhancing soil carbon sequestration. This study provided valuable insights into the integration of crop and livestock production with atmospheric environmental protection in the future.
依据政府间气候变化专门委员会(Intergovernmental Panel on Climate Change,IPCC)最新发布的温室气体核算方法指南[16],本研究基于新疆生产建设兵团(Xinjiang Production and Construction Corps,XPCC)和北大荒集团(Beidahuang Group,BG)在种植业及畜禽养殖业方面的实际生产情况,核算其CH4与N2O气体排放量,全文均以CO2计。
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