气候变化领域集成服务门户(CCPortal): Greenhouse gas emissions from Mediterranean agriculture: Evidence of unbalanced research efforts and knowledge gaps

CCPortal

DOI	10.1016/j.gloenvcha.2021.102319
	Greenhouse gas emissions from Mediterranean agriculture: Evidence of unbalanced research efforts and knowledge gaps
	Aguilera E.; Reyes-Palomo C.; Díaz-Gaona C.; Sanz-Cobena A.; Smith P.; García-Laureano R.; Rodríguez-Estévez V.
发表日期	2021
ISSN	9593780
卷号	69
英文摘要	Designing effective mitigation policies for greenhouse gas (GHG) emissions from agriculture requires understanding the mechanisms by which management practices affect emissions in different agroclimatic conditions. Agricultural GHG emissions and carbon sequestration potentials have been extensively studied in the Mediterranean biome, which is a biodiversity hot spot that is highly vulnerable to environmental changes. However, the absolute magnitude of GHG emissions and the extent to which research efforts match these emissions in each production system, are unknown. Here, we estimated GHG emissions and potential carbon sinks associated with crop and livestock production systems in the Mediterranean biome, covering 31 countries and assessing approximately 10,000 emission items. The results were then combined with a bibliometric assessment of 797 research publications to compare emissions estimates obtained with research efforts for each of the studied items. Although the magnitude of GHG emissions from crop production and the associated carbon sequestration potential (261 Tg CO2eq yr−1) were nearly half of those from livestock production (367 Tg CO2eq yr−1), mitigation research efforts were largely focused on the former. As a result, the relative research intensity, which relates the number of publications to the magnitude of emissions, is nearly one order of magnitude higher for crop production than for livestock production (2.6 and 0.4 papers Tg CO2eq−1, respectively). Moreover, this mismatch is even higher when crop and livestock types are studied separately, which indicates major research gaps associated with grassland and many strategic crop types, such as fruit tree orchards, fiber crops, roots and tubers. Most life cycle assessment studies do not consider carbon sequestration, although this single process has the highest magnitude in terms of annual CO2eq. In addition, these studies employ Tier 1 IPCC factors, which are not suited for use in Mediterranean environments. Our analytical results show that a strategic plan is required to extend on-site field GHG measurements to the Mediterranean biome. Such a plan needs to be cocreated among stakeholders and should be based on refocusing research efforts to GHG balance components that have been afforded less attention. In addition, the outcomes of Mediterranean field studies should be integrated into life cycle assessment-based carbon footprint analyses in order to avoid misleading conclusions. © 2021 The Author(s)
关键词	Agricultural GHG emissions Carbon sequestration Livestock GHG emissions Mediterranean agriculture Research gaps
英文关键词	agricultural emission; biodiversity; carbon footprint; carbon sequestration; crop production; greenhouse gas; life cycle analysis; Mediterranean environment; orchard; research work
语种	英语
来源期刊	Global Environmental Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/205477
作者单位	CEIGRAM-ETSIAAB, Technical University of Madrid, Madrid, 28040, Spain; Cátedra de Ganadería Ecológica Ecovalia-Clemente Mata, Facultad de Veterinaria, University of Córdoba, Córdoba, 14071, Spain; Institute of Biological and Environmental Sciences, School of Biological Sciences, University of Aberdeen, Aberdeen, UK AB24 3UU, United Kingdom
推荐引用方式 GB/T 7714	Aguilera E.,Reyes-Palomo C.,Díaz-Gaona C.,et al. Greenhouse gas emissions from Mediterranean agriculture: Evidence of unbalanced research efforts and knowledge gaps[J],2021,69.
APA	Aguilera E..,Reyes-Palomo C..,Díaz-Gaona C..,Sanz-Cobena A..,Smith P..,...&Rodríguez-Estévez V..(2021).Greenhouse gas emissions from Mediterranean agriculture: Evidence of unbalanced research efforts and knowledge gaps.Global Environmental Change,69.
MLA	Aguilera E.,et al."Greenhouse gas emissions from Mediterranean agriculture: Evidence of unbalanced research efforts and knowledge gaps".Global Environmental Change 69(2021).