气候变化领域集成服务门户(CCPortal): Soil management practices can contribute to net carbon neutrality in California

CCPortal

DOI	10.1088/1748-9326/ad4b41
	Soil management practices can contribute to net carbon neutrality in California
	Di Vittorio, Alan V.; Simmonds, Maegen B.; Jones, Andrew; Silver, Whendee L.; Houlton, Benjamin; Torn, Margaret; Almaraz, Maya; Nico, Peter
发表日期	2024
ISSN	1748-9326
起始页码	19
结束页码	6
卷号	19 期号:6
英文摘要	Stabilizing climate requires reducing greenhouse gas (GHG) emissions and storing atmospheric carbon dioxide (CO2) in land or ocean systems. Soil management practices can reduce GHG emissions or sequester atmospheric CO2 into inorganic and organic forms. However, whether soil carbon strategies represent a viable and impactful climate mitigation pathway is uncertain. A specific question concerns the role that land-management practices and soil amendments can play in realizing California's ambition for carbon neutrality by 2045. Here we examine the carbon flux impacts of soil conservation (i.e., compost, reduced tillage, cover crop) and enhanced silicate rock weathering (EW) practices at different areal extents of implementation in cropland, grassland, and savanna in California under two climate change cases. We show that with implementation areas of 15% or 50% of private cultivated land, grassland, and savanna in California, soil conservation practices alone can contribute 1.4 0.7 2.1 % ( - 1.8 - 0.9 - 2.7 Mt CO2eq y-1) and 4.6 2.3 6.9 % ( - 6.0 - 3.0 - 8.9 Mt CO2eq y-1) of the additional emissions reduction needed (beyond previous targets) to meet the 2045 net neutrality goal (-129.3 Mt CO2eq y-1), respectively, on an average annual basis, including climate uncertainty. Including EW in these scenarios increases the total contributions of management practices to 4.1 2.5 5.6 % ( - 5.2 - 3.2 - 7.3 Mt CO2eq y-1) and 13.5 8.2 18.6 % ( - 17.5 - 10.7 - 24.2 Mt CO2eq y-1), respectively, of this reduction. This highlights that the extent of implementation area is a major factor in determining benefits and that EW has the potential to make a real contribution to net reduction targets. Results are similar across climate cases, indicating that contemporary field data can be used to make future projections. With EW there remains mechanistic uncertainties, however, such as rock dissolution rate and environmental controls on weathering products, which require additional field research to improve understanding of the technological efficacy of this approach for California's 2045 carbon neutrality goal.
英文关键词	emissions reduction; land use; soil carbon; inorganic carbon; enhanced weathering; CALAND; climate change mitigation
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:001230501900001
来源期刊	ENVIRONMENTAL RESEARCH LETTERS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/290912
作者单位	United States Department of Energy (DOE); Lawrence Berkeley National Laboratory; University of California System; University of California Berkeley; Cornell University; Cornell University; Yale University; University of California System; University of California Davis
推荐引用方式 GB/T 7714	Di Vittorio, Alan V.,Simmonds, Maegen B.,Jones, Andrew,et al. Soil management practices can contribute to net carbon neutrality in California[J],2024,19(6).
APA	Di Vittorio, Alan V..,Simmonds, Maegen B..,Jones, Andrew.,Silver, Whendee L..,Houlton, Benjamin.,...&Nico, Peter.(2024).Soil management practices can contribute to net carbon neutrality in California.ENVIRONMENTAL RESEARCH LETTERS,19(6).
MLA	Di Vittorio, Alan V.,et al."Soil management practices can contribute to net carbon neutrality in California".ENVIRONMENTAL RESEARCH LETTERS 19.6(2024).