NDLI: Modelling spatially explicit impacts from phosphorus emissions in agriculture

Content Provider	Springer Nature Link
Author	Scherer, Laura Pfister, Stephan
Copyright Year	2015
Abstract	Excess phosphorus from fertilizer application and mobilised soil phosphorus from erosion are partially lost to the aquatic environment where they might cause eutrophication. Phosphorus emissions vary spatially and it is the goal of this study to broaden the scope of the existing inventory to the global scale and to increase the spatial resolution by accounting for relevant environmental processes.Phosphorus emissions were estimated globally at a resolution of 5 arc-minutes for 169 crops. Two models were coupled for that purpose. First, the Universal Soil Loss Equation (USLE) model was used to determine soil erosion which is the dominant process inducing phosphorus emissions. Second, the Swiss Agricultural Life Cycle Analysis (SALCA) model was applied to estimate the phosphorus emissions from four different processes with erosion being one of them. The emissions as inventory were compared to the ecoinvent database and subsequently translated into environmental impacts on biodiversity via characterisation factors. Additionally, sensitivity and contribution to variance analyses were carried out.Our results suggest that the data in the ecoinvent database, which is widely used for life cycle assessments, underestimate phosphorus emissions by up to an order of magnitude. Furthermore, the contribution to variance analysis highlighted the importance of regionalising both, inventory results and characterisation factors.Since the ecoinvent database provides a poor representation of global conditions, we highly recommend using regionalised estimates of phosphorus emissions provided in this study.
Starting Page	785
Ending Page	795
Page Count	11
File Format	PDF
ISSN	09483349
Journal	The International Journal of Life Cycle Assessment
Volume Number	20
Issue Number	6
e-ISSN	16147502
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2015-04-17
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Agriculture Erosion Eutrophication Life cycle assessment Life cycle impact assessment Phosphorus emissions Regionalisation Environment Environmental Economics Environmental Engineering/Biotechnology Environmental Chemistry
Content Type	Text
Resource Type	Article
Subject	Environmental Science

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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