Arid
DOI10.1016/j.scitotenv.2017.11.243
A historical perspective on soil organic carbon in Mediterranean cropland (Spain, 1900-2008)
Aguilera, Eduardo1; Guzman, Gloria I.1; Alvaro-Fuentes, Jorge2; Infante-Amate, Juan1; Garcia-Ruiz, Roberto3; Carranza-Gallego, Guiomar1; Soto, David1; Gonzalez de Molina, Manuel1
通讯作者Aguilera, Eduardo
来源期刊SCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
EISSN1879-1026
出版年2018
卷号621页码:634-648
英文摘要

Soil organic carbon (SOC) management is key for soil fertility and formitigation and adaptation to climate change, particularly in desertification-prone areas such as Mediterranean croplands. Industrialization and global change processes affect SOC dynamics inmultiple, often opposing, ways. Herewe present a detailed SOC balance in Spanish cropland from 1900 to 2008, as a model of a Mediterranean, industrialized agriculture. Net Primary Productivity (NPP) and soil C inputs were estimated based on yield and management data. Changes in SOC stocks were modeled using HSOC, a simplemodelwith one inert and two active C pools, which combines RothCmodel parameters with humification coefficients. Crop yields increased by 227% during the studied period, but total C exported fromthe agroecosystem only increased by 73%, total NPP by 30%, and soil C inputs by 20%. There was a continued decline in SOC during the 20th century, and cropland SOC levels in 2008 were 17% below their 1933 peak. SOC trends were driven by historical changes in land uses, management practices and climate. Cropland expansion was themain driver of SOC loss until mid-20th century, followed by the decline in soil C inputs during the fast agricultural industrialization starting in the 1950s, which reduced harvest indices and weed biomass production, particularly in woody cropping systems. C inputs started recovering in the 1980s, mainly through increasing crop residue return. The upward trend in SOC mineralization rates was an increasingly important driver of SOC losses, triggered by irrigation expansion, soil cover loss and climate change-driven temperature rise. (C) 2017 Elsevier B.V. All rights reserved.


英文关键词Climate change Land use change NPP Irrigation Roots Woody crops
类型Article
语种英语
国家Spain
收录类别SCI-E
WOS记录号WOS:000424196800064
WOS关键词GREENHOUSE-GAS EMISSIONS ; CLIMATE-CHANGE ; CROPPING SYSTEMS ; C-13 ABUNDANCE ; NITROUS-OXIDE ; MANAGEMENT-PRACTICES ; ANAEROBIC-DIGESTION ; AGRICULTURAL SOILS ; GASEOUS EMISSIONS ; PENINSULAR SPAIN
WOS类目Environmental Sciences
WOS研究方向Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/212932
作者单位1.Univ Pablo de Olavide, Agro Ecosyst Hist Lab, Ctra Utrera,Km 1, Seville 41013, Spain;
2.CSIC, EEAD, Dept Suelo & Agua, Zaragoza 50059, Spain;
3.Univ Jaen, Dept Biol Anim Biol Vegetal & Ecol, Jaen 23071, Spain
推荐引用方式
GB/T 7714
Aguilera, Eduardo,Guzman, Gloria I.,Alvaro-Fuentes, Jorge,et al. A historical perspective on soil organic carbon in Mediterranean cropland (Spain, 1900-2008)[J],2018,621:634-648.
APA Aguilera, Eduardo.,Guzman, Gloria I..,Alvaro-Fuentes, Jorge.,Infante-Amate, Juan.,Garcia-Ruiz, Roberto.,...&Gonzalez de Molina, Manuel.(2018).A historical perspective on soil organic carbon in Mediterranean cropland (Spain, 1900-2008).SCIENCE OF THE TOTAL ENVIRONMENT,621,634-648.
MLA Aguilera, Eduardo,et al."A historical perspective on soil organic carbon in Mediterranean cropland (Spain, 1900-2008)".SCIENCE OF THE TOTAL ENVIRONMENT 621(2018):634-648.
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