Variation and Spatial Distribution of Emissions from Livestock Manure Management in Iran: An Evaluation and Location Analysis

IF 2.6 4区 环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES
Ali Vaysi, Saeed Ghanbari Azad Pashaki, Abbas Rohani, Mehdi Khojastehpour
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Abstract

Rising livestock and poultry production necessitates sustainable manure management practices to curb greenhouse gas (GHG) emissions. This study employs two artificial neural networks, Multi-Layer Perceptron (MLP) and Radial Basis Function (RBF), to forecast manure production in Iranian provinces (2020–2030). The RBF model demonstrated superior accuracy compared to a Multi-Layer Perceptron model. Our forecasts predict the significant potential for biogas and biomethane production from manure by 2030, estimated at 10,782.4 and 6469.44 Mm3.year-1 respectively. This translates to replacing 4.03% and 4.98% of Iran's projected annual gas and electricity consumption in 2030. While this offers a renewable energy source, conventional manure management practices are projected to increase agricultural methane emissions. Our analysis highlights that utilizing biomethane from biogas represents the most effective strategy for reducing GHG emissions in the energy sector. The study projects that by 2030, manure management will still produce 14 million tons of carbon dioxide, equivalent to 16.71% of the agricultural sector's GHG emissions. Scenario analysis indicates that adopting biomethane as a natural gas substitute offers the most significant reduction in energy sector emissions compared to current practices. These findings underscore the importance of effective manure management for climate change mitigation. Furthermore, they highlight the need for long-term pollution reduction policies informed by accurate livestock growth forecasts. This study also contributes by demonstrating the potential of artificial neural network models for accurate manure production forecasting and developing GHG reduction strategies.

Abstract Image

伊朗牲畜粪便管理排放物的变化和空间分布:评估和位置分析
畜禽养殖量的不断增加要求采用可持续的粪便管理方法来遏制温室气体(GHG)排放。本研究采用多层感知器 (MLP) 和径向基函数 (RBF) 两种人工神经网络来预测伊朗各省(2020-2030 年)的粪肥产量。与多层感知器模型相比,径向基函数模型表现出更高的准确性。根据我们的预测,到 2030 年,利用粪便生产沼气和生物甲烷的潜力巨大,估计分别为 10782.4 百万立方米/年和 6469.44 百万立方米/年。这相当于在 2030 年替代伊朗预计年天然气和电力消耗量的 4.03% 和 4.98%。虽然这提供了一种可再生能源,但传统的粪肥管理方法预计会增加农业甲烷排放量。我们的分析强调,利用沼气产生的生物甲烷是减少能源行业温室气体排放的最有效策略。研究预测,到 2030 年,粪肥管理仍将产生 1400 万吨二氧化碳,相当于农业部门温室气体排放量的 16.71%。情景分析表明,与目前的做法相比,采用生物甲烷作为天然气替代品能最显著地减少能源部门的排放量。这些发现强调了有效的粪肥管理对减缓气候变化的重要性。此外,它们还强调了在准确预测牲畜增长的基础上制定长期污染减排政策的必要性。这项研究还证明了人工神经网络模型在准确预测粪肥产量和制定温室气体减排战略方面的潜力。
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来源期刊
CiteScore
5.40
自引率
0.00%
发文量
104
审稿时长
1.7 months
期刊介绍: International Journal of Environmental Research is a multidisciplinary journal concerned with all aspects of environment. In pursuit of these, environmentalist disciplines are invited to contribute their knowledge and experience. International Journal of Environmental Research publishes original research papers, research notes and reviews across the broad field of environment. These include but are not limited to environmental science, environmental engineering, environmental management and planning and environmental design, urban and regional landscape design and natural disaster management. Thus high quality research papers or reviews dealing with any aspect of environment are welcomed. Papers may be theoretical, interpretative or experimental.
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