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| Registros recuperados: 262 | |
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| Egbendewe-Mondzozo, Aklesso; Swinton, Scott M.; Izaurralde, R. Cesar; Manowitz, David H.; Zhang, Xuesong. |
| This paper introduces a spatial bioeconomic model for study of potential cellulosic biomass supply at regional scale. By modeling the profitability of alternative crop production practices, it captures the opportunity cost of replacing current crops by cellulosic biomass crops. The model draws upon biophysical crop input-output coefficients, price and cost data, and spatial transportation costs in the context of profit maximization theory. Yields are simulated using temperature, precipitation and soil quality data with various commercial crops and potential new cellulosic biomass crops. Three types of alternative crop management scenarios are simulated by varying crop rotation, fertilization and tillage. The cost of transporting biomass to a specific... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Biomass production; Bioenergy supply; Biofuel policy; Bioenergy; Cellulosic ethanol; Agro-ecosystem economics; Ecosystem services economics; Agro-environmental trade-off analysis; Mathematical programming; EPIC; Agricultural and Food Policy; Crop Production/Industries; Environmental Economics and Policy; Land Economics/Use; Production Economics; Resource /Energy Economics and Policy; Q16; Q15; Q57; Q18. |
| Ano: 2010 |
URL: http://purl.umn.edu/98277 |
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| Beyene, Fekadu. |
| This paper examines interethnic conflict on grazing land previously accessed as common property. The study was undertaken in Mieso District of eastern Ethiopia where two ethnic groups experience different production systems pastoral and agropastoral. Game theoretic approach and analytic narratives have been used as analytical tools. Results show that the historical change in land use by one of the ethnic groups, resource scarcity, violation of customary norms, power asymmetry and livestock raids are some of the factors that have contributed to the recurrence of the conflict. The role of raids in triggering conflict and restricting access to grazing area becomes particularly important. Socio-economic and political factors are responsible for power... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Property rights; Conflict; Grazing land; Power asymmetry; Access rights; Customary institutions; Mieso; Ethiopia; Africa; Land Economics/Use; O17; Z13; Q15. |
| Ano: 2007 |
URL: http://purl.umn.edu/7703 |
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| Petracco, Carly K.; Pender, John L.. |
| Increasing smallholder farmers’ access to credit is a paramount concern in Africa in general and in Uganda in particular, as a means to help modernize agriculture. We use matching impact evaluation methods to assess four pair-wise comparisons: i) households who have freehold land with vs. without a title, ii) households who have customary land with vs. without a customary certificate, iii) households with a title or certificate having freehold vs. customary tenure, and iv) households without a title or certificate having freehold vs. customary tenure. Each comparison is then evaluated for the impact on access to any form of credit, formal credit and informal credit. Two matching methods were used and the results compared to test the robustness of the... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Uganda; Land tenure; Land titling; Rural credit; Agricultural Finance; Land Economics/Use; Q15; Q14. |
| Ano: 2009 |
URL: http://purl.umn.edu/51899 |
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| Erenstein, Olaf. |
| Lowland development efforts in West Africa have a mixed record. The paper posits that this is due to the neglect of: (1) market opportunity as driving force for lowland use; and (2) the wider context within which lowlands are used as important modifier. The paper applies a regression-based decomposition framework to analyze the factors driving and modifying lowland use in West Africa. It uses community-level data from 1014 geo-referenced lowland units around four urban centers along an agro-ecological gradient in Cote d'Ivoire and Mali. Tobit models are used to explain the extent of lowland non-use (seasonal fallow), its diversity (in terms of rice and other crop cultivation) and its land use intensity (double cropping). Results highlight that proximity to... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Urban - rural linkages; Market access; Agro-ecological gradient; West Africa; Lowland use; Peri-urban agriculture; O18; O3; Q15; Land Economics/Use. |
| Ano: 2006 |
URL: http://purl.umn.edu/25288 |
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| Lerman, Zvi; Shagaida, Natalya. |
| Russia has experienced dramatic changes in land ownership and tenure since 1991: agricultural land has been largely privatized, individual landowners now have legal rights to most agricultural land in the country, and prohibitions on buying and selling of land have been recently removed. The necessary pre-conditions for the development of agricultural land markets have been met and we are beginning to witness transactions that involve individual landowners, and not only the state. Further development of the land market is circumscribed by the inadequacy of the administrative and technical infrastructure. The paper discusses the evolving legal framework for land reform, considers the impacts on privatization and ownership structure of agricultural land, and... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Land reform; Land market; Land leasing; Transition; Land Economics/Use; P23; P26; P31; P32; Q15. |
| Ano: 2005 |
URL: http://purl.umn.edu/24604 |
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| Spencer, Thomas; Ancev, Tihomir. |
| Irrigation induced salinity is a serious problem in many countries around the world. In Australia, this type of salinity is most pronounced in the valley of the River Murray in South Australia. Location of irrigation enterprises has been identified as a key factor that needs to be taken into account by policies aimed at mitigating salinity. This article compares and contrasts two such policies: an irrigation zoning policy, where new irrigation enterprises are only allowed in low salinity impact zones, and an offsetting with salinity credits policy, where new irrigation enterprises can locate in high salinity impact zones, provided they offset their salinity impact with salinity credits. Key findings are that the offsetting policy will be both less costly... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Irrigation; Least-cost; Offsets; Salinity; Land Economics/Use; Q15; Q18; Q25; Q50. |
| Ano: 2006 |
URL: http://purl.umn.edu/25517 |
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| Janssen, Larry; Pflueger, Burton; Opoku, Emmanuel. |
| Agricultural land values and cash rental rates in South Dakota, by region and by state, are primary topics of this report. The target audience are farmers and ranchers, landowners, ag professional (lenders, rural appraisers, professional farm managers), and policy makers interested in ag land market trends. This report contains results of the 2010 Farm Real Estate Market Survey, the 20th annual SDSU survey developed to estimate ag land values and cash rental rates by land use in different regions of South Dakota. |
| Tipo: Report |
Palavras-chave: Ag land; Farmland; Acreage; Cropland; Land ownership; Land use; Land tenure; Ranchland; Agricultural Finance; Farm Management; Land Economics/Use; Q15. |
| Ano: 2010 |
URL: http://purl.umn.edu/101122 |
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| Souty, Francois; Brunelle, Thierry; Dumas, Patrice; Dorin, Bruno; Ciais, Philippe; Crassous, Renaud. |
| Interactions between food demand, biomass energy and forest preservation are driving both food prices and land-use changes, regionally and globally. This study presents a new model called Nexus Land-Use which describes these interactions through a generic representation of agricultural intensification mechanisms. The Nexus Land-Use model equations combine biophysics and economics into a single coherent framework to calculate crop yields, food prices, and resulting pasture and cropland areas within 12 regions inter-connected with each other by international trade. The representation of cropland and livestock production systems in each region relies on three components: (i) a biomass production function derived from the crop yield response function to inputs... |
| Tipo: Working Paper |
Palavras-chave: Land-use Change; Modelling; Global Biomass Projections; Environmental Economics and Policy; Q11; Q15. |
| Ano: 2012 |
URL: http://purl.umn.edu/122859 |
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| Registros recuperados: 262 | |
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