MODELING LAND-USE CHANGE IMPACTS OF BIOFUELS IN THE GTAP-BIO FRAMEWORK

2012 ◽  
Vol 03 (03) ◽  
pp. 1250015 ◽  
Author(s):  
ALLA A. GOLUB ◽  
THOMAS W. HERTEL
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Computable General Equilibrium ◽  
Bilateral Trade ◽  
Crop Yields ◽  
Ghg Emissions ◽  
Biofuel Production ◽  
Cge Models

This paper reviews an analysis of land use change impacts of expanded biofuel production with GTAP-BIO computable general equilibrium (CGE) model. It describes the treatment of energy substitution, the role of biofuel by-products, specification of bilateral trade, the determination of land cover changes in response to increased biofuel feedstock production, and changes in crop yields – both at the intensive and extensive margins. The paper responds to some of the criticisms of GTAP-BIO and provides insights into the sensitivity of land use change and GHG emissions to changes in key parameters and assumptions. In particular, it considers an alternative specification of acreage response that takes into account the degree of land heterogeneity within agro-ecological zone (AEZ) for different AEZs and countries. The paper concludes with the discussion of alternative specifications of land mobility across uses employed in CGE models and the agenda for further research to narrow parametric and structural uncertainty to improve the model's performance.

scholarly journals Biofuel production and soil GHG emissions after land-use change to switchgrass and giant reed in the U.S. Southeast

2017 ◽  
Vol 7 (1) ◽  
pp. e00125 ◽  
Author(s):  
Andrea Nocentini ◽  
John Field ◽  
Andrea Monti ◽  
Keith Paustian
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Ghg Emissions ◽  
Biofuel Production ◽  
Giant Reed ◽  
The U.S

scholarly journals Biofuels and land-use changes: searching for the top model

2011 ◽  
Vol 1 (2) ◽  
pp. 224-232 ◽  
Author(s):  
Andre M. Nassar ◽  
Leila Harfuch ◽  
Luciane C. Bachion ◽  
Marcelo R. Moreira
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Policy Making ◽  
Agricultural Sector ◽  
Land Use Changes ◽  
Ghg Emissions ◽  
Biofuel Production ◽  
Policy Makers ◽  
Green House Gas ◽  
Biofuel Policies

The use of agricultural-based biofuels has expanded. Discussions on how to assess green house gas (GHG) emissions from biofuel policies, specifically on (non-observed) land-use change (LUC) effects involve two main topics: (i) the limitations on the existing methodologies, and (ii) how to isolate the effects of biofuels. This paper discusses the main methodologies currently used by policy-makers to take decisions on how to quantify LUCs owing to biofuel production expansion. It is our opinion that the concerns regarding GHG emissions associated with LUCs should focus on the agricultural sector as a whole rather than concentrating on biofuel production. Actually, there are several limitations of economic models and deterministic methodologies for simulating and explaining LUCs resulting from the expansion of the agricultural sector. However, it is equally true that there are avenues of possibilities to improve models and make them more accurate and precise in order to be used for policy-making. Models available need several improvements to reach perfection. Any top model requires a concentration of interdisciplinary designers in order to replicate empirical evidence and capture correctly the agricultural sector dynamics for different countries and regions. Forgetting those limitations means that models will be used for the wrong purposes.

Alternative U.S. biofuel mandates and global GHG emissions: The role of land use change, crop management and yield growth

Energy Policy ◽  
2013 ◽  
Vol 57 ◽  
pp. 602-614 ◽  
Author(s):  
A. Mosnier ◽  
P. Havlík ◽  
H. Valin ◽  
J. Baker ◽  
B. Murray ◽  
...  
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Ghg Emissions ◽  
Crop Management

scholarly journals Accounting for indirect land-use change in the life cycle assessment of biofuel supply chains

2012 ◽  
Vol 9 (71) ◽  
pp. 1105-1119 ◽  
Author(s):  
Susan Tarka Sanchez ◽  
Jeremy Woods ◽  
Mark Akhurst ◽  
Matthew Brander ◽  
Michael O'Hare ◽  
...  
Keyword(s):  
Land Use ◽  
Life Cycle ◽  
Land Use Change ◽  
Life Cycle Analysis ◽  
Crop Yields ◽  
Hybrid Approach ◽  
Biofuel Production ◽  
Policy Outcomes ◽  
Carbon Intensity ◽  
Indirect Land Use Change

The expansion of land used for crop production causes variable direct and indirect greenhouse gas emissions, and other economic, social and environmental effects. We analyse the use of life cycle analysis (LCA) for estimating the carbon intensity of biofuel production from indirect land-use change (ILUC). Two approaches are critiqued: direct, attributional life cycle analysis and consequential life cycle analysis (CLCA). A proposed hybrid ‘combined model’ of the two approaches for ILUC analysis relies on first defining the system boundary of the resulting full LCA. Choices are then made as to the modelling methodology (economic equilibrium or cause–effect), data inputs, land area analysis, carbon stock accounting and uncertainty analysis to be included. We conclude that CLCA is applicable for estimating the historic emissions from ILUC, although improvements to the hybrid approach proposed, coupled with regular updating, are required, and uncertainly values must be adequately represented; however, the scope and the depth of the expansion of the system boundaries required for CLCA remain controversial. In addition, robust prediction, monitoring and accounting frameworks for the dynamic and highly uncertain nature of future crop yields and the effectiveness of policies to reduce deforestation and encourage afforestation remain elusive. Finally, establishing compatible and comparable accounting frameworks for ILUC between the USA, the European Union, South East Asia, Africa, Brazil and other major biofuel trading blocs is urgently needed if substantial distortions between these markets, which would reduce its application in policy outcomes, are to be avoided.

The role of bacterial communities in shaping Cd-induced hormesis in ‘living’ soil as a function of land-use change

2020 ◽  
pp. 124996
Author(s):  
Diwu Fan ◽  
Shengyan Wang ◽  
Yanhui Guo ◽  
Jian Liu ◽  
Evgenios Agathokleous ◽  
...  
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Bacterial Communities

Exploring the role of land degradation on agricultural land use change dynamics

2018 ◽  
Vol 636 ◽  
pp. 1373-1381 ◽  
Author(s):  
S. Bajocco ◽  
D. Smiraglia ◽  
M. Scaglione ◽  
E. Raparelli ◽  
L. Salvati
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Land Degradation ◽  
Agricultural Land ◽  
Agricultural Land Use ◽  
Change Dynamics

Mapping land use on Irish raised bogs using Sentinel-2 imagery and Google Earth Engine

2021 ◽  
Author(s):  
Wahaj Habib ◽  
John Connolly ◽  
Kevin McGuiness
Keyword(s):  
Land Use ◽  
High Resolution ◽  
Land Use Change ◽  
Optical Sensors ◽  
Ghg Emissions ◽  
Google Earth ◽  
Good Prospect ◽  
Raised Bogs ◽  
Google Earth Engine ◽  
Sentinel 2

<p>Peatlands are one of the most space-efficient terrestrial carbon stores. They cover approximately 3 % of the terrestrial land surface and account for about one-third of the total soil organic carbon stock. Peatlands have been under severe strain for centuries all over the world due to management related activities. In Ireland, peatlands span over approximately 14600 km<sup>2</sup>, and 85 % of that has already been degraded to some extent. To achieve temperature goals agreed in the Paris agreement and fulfil the EU’s commitment to quantifying the Carbon/Green House Gases (C/GHG) emissions from land use, land use change forestry, accurate mapping and identification of management related activities (land use) on peatlands is important.</p><p>High-resolution multispectral satellite imagery by European Space Agency (ESA) i.e., Sentinel-2 provides a good prospect for mapping peatland land use in Ireland. However, due to persistent cloud cover over Ireland, and the inability of optical sensors to penetrate the clouds makes the acquisition of clear sky imagery a challenge and hence hampers the analysis of the landscape. Google Earth Engine (a cloud-based planetary-scale satellite image platform) was used to create a cloud-free image mosaic from sentinel-2 data was created for raised bogs in Ireland (images collected for the time period between 2017-2020). A preliminary analysis was conducted to identify peatland land use classes, i.e., grassland/pasture, crop/tillage, built-up, cutover, cutaway and coniferous, broadleaf forests using this mosaicked image. The land-use classification results may be used as a baseline dataset since currently, no high-resolution peatland land use dataset exists for Ireland. It can also be used for quantification of land-use change on peatlands. Moreover, since Ireland will now be voluntarily accounting the GHG emissions from managed wetlands (including bogs), this data could also be useful for such type of assessment.</p>

scholarly journals Industrial Sprawl and Residential Housing: Exploring the Interplay between Local Development and Land-Use Change in the Valencian Community, Spain

Land ◽  
2019 ◽  
Vol 8 (10) ◽  
pp. 143 ◽  
Author(s):  
Zambon ◽  
Cerdà ◽  
Gambella ◽  
Egidi ◽  
Salvati
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Urban Sprawl ◽  
Industrial Development ◽  
Local Development ◽  
Rural Landscape ◽  
Southern Europe ◽  
Urban Hierarchy ◽  
Industrial Expansion

Urbanization in Mediterranean Europe has occurred in recent decades with expansion of residential, commercial and industrial settlements into rural landscapes outside the traditional metropolitan boundaries. Industrial expansion in peri-urban contexts was particularly intense in Southern Europe. Based on these premises, this work investigates residential and industrial settlement dynamics in the Valencian Community, Spain, between 2005 and 2015, with the aim to clarify the role of industrial expansion in total urban growth in a paradigmatic Mediterranean region. Since the early 1990s, the Valencian industrial sector developed in correspondence with already established industrial nodes, altering the surrounding rural landscape. Six variables (urban hierarchy, discontinuous settlements, pristine land under urban expansion, isolated industrial settlements, within- and out-of-plan industrial areas) were considered with the aim at exploring land-use change. Empirical results indicate a role of industrial development in pushing urban sprawl in coastal Valencia. A reflection on the distinctive evolution of residential and industrial settlements is essential for designing new planning measures for sustainable land management and containment of urban sprawl in Southern Europe. A comparative analysis of different alternatives of urban development based on quantitative assessment of land-use change provides guidelines for local development and ecological sustainability.

scholarly journals Land-use change and livelihoods of non-farm households: The role of income from employment in oil palm and rubber in rural Indonesia

2018 ◽  
Vol 76 ◽  
pp. 828-838 ◽  
Author(s):  
Jonida Bou Dib ◽  
Vijesh V. Krishna ◽  
Zulkifli Alamsyah ◽  
Matin Qaim
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Oil Palm ◽  
Farm Households
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