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Registros recuperados: 35
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A DYNAMIC ANALYSIS OF THE IMPACT OF WATER QUALITY POLICIES ON IRRIGATION INVESTMENT AND CROP CHOICE DECISIONS AgEcon
Wu, JunJie; Mapp, Harry P., Jr.; Bernardo, Daniel J..
A dynamic model is developed to analyze farmers' irrigation investment and crop choice decisions under alternative water quality protection policies. The model is applied to an empirical example in the Oklahoma High Plains. The choices of crops and irrigation systems and the resulting levels of irrigation, income, and nitrogen runoff and percolation are simulated over a ten-year period. An effluent tax on nitrogen runoff and percolation is shown to be effective in reducing nitrate pollution. The efficacy of cost sharing in adopting modern irrigation technologies and restrictions on irrigation water use depends on soil type. A tax on nitrogen use is shown to be the least effective policy.
Tipo: Journal Article Palavras-chave: Crop selection; Dynamic optimization; Irrigation investment; Water quality; Crop Production/Industries.
Ano: 1994 URL: http://purl.umn.edu/15167
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A spatial analysis of land use change and water quality in Lake Biwa, Japan AgEcon
Tanaka, Katsuya; Wu, JunJie.
Tipo: Conference Paper or Presentation Palavras-chave: Land Economics/Use; Resource /Energy Economics and Policy.
Ano: 2010 URL: http://purl.umn.edu/61911
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AMENITIES IN AN URBAN EQUILIBRIUM MODEL: RESIDENTIAL DEVELOPMENT IN PORTLAND, OREGON AgEcon
Wu, JunJie; Adams, Richard M.; Plantinga, Andrew J..
This paper analyzes the effect of open space and other amenities on housing prices and development density within the framework of an urban equilibrium model. The model is estimated as a system of equations that includes households' residential choice decisions and developers' development decisions and emphasizes the importance of amenities in the formation of development patterns and property values. The model is applied to Portland, Oregon, where ambitious open space programs have been implemented. The results suggest that amenities are important: households are willing to pay more for newer houses located in areas of less dense development, with more open space, better views, less traffic congestion, and near amenity locations. For the developer,...
Tipo: Conference Paper or Presentation Palavras-chave: Community/Rural/Urban Development; R11; R21; R31.
Ano: 2003 URL: http://purl.umn.edu/21961
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ASSESSING THE COSTS AND ENVIRONMENTAL CONSEQUENCES OF AGRICULTURAL LAND USE CHANGES: A SITE-SPECIFIC, POLICY-SCALE MODELING APPROACH AgEcon
Wu, JunJie; Adams, Richard M.; Kling, Catherine L.; Tanaka, Katsuya.
The growth in federal conservation programs has created a need for policy modeling frameworks capable of measuring micro-level behavioral responses and macro-level landscape changes. This paper presents an empirical model that predicts crop choices, crop rotations, and conservation tillage adoption as a function of conservation payment levels, profits, and other variables at more than 42,000 agricultural sites of the National Resource Inventory (NRI) in the Upper Mississippi River Basin. Predicted changes in crop choices and tillage practices are then fed into site-specific environmental production functions to determine changes in nitrate runoff and leaching and in water and wind erosion at each NRI site. This policy-scale model is applied to the case of...
Tipo: Working or Discussion Paper Palavras-chave: Agricultural policy; Conservation practices; Green payments; Land use changes; Nitrate runoff and leaching; Non-point pollution; Soil erosion; Environmental Economics and Policy; Land Economics/Use.
Ano: 2003 URL: http://purl.umn.edu/18475
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Conservation Policy and Land Value: The Conservation Reserve Program AgEcon
Lin, Haixia; Wu, JunJie.
This paper quantifies the effects of the Conservation Reserve Program (CRP) on farmland and developed land prices. Results show that the CRP increases farmland and developed land prices by 1.8% and 0.6%, respectively, on national average, with the largest increases in the Mountain, Southern Plains, and Northern Plains.
Tipo: Conference Paper or Presentation Palavras-chave: Land Economics/Use.
Ano: 2005 URL: http://purl.umn.edu/19417
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EFFICIENT PATTERNS OF CONSERVATION ACTIVITIES IN A WATERSHED: THE CASE OF THE GRANDE RONDE RIVER, OREGON AgEcon
Watanabe, Michio; Adams, Richard M.; Wu, JunJie.
This research examines a spatially explicit allocation of habitat restoration activities in an Oregon watershed to meet water temperature targets for the benefit of endangered salmonid fish species. Integrating hydrological, biological and economic models, a series of optimization problems are investigated for different policy targets including temperature reductions and enhanced fish populations. Results indicated that the heterogeneous nature of riparian conditions and stream morphology needs to be considered if restoration activities are to be allocated efficiently in a watershed. We also found that it is less costly to implement restoration activities in tributaries if the objective is to maximize stream length where water temperatures decrease by a...
Tipo: Conference Paper or Presentation Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2003 URL: http://purl.umn.edu/21995
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Empirical Analysis of Land-use Change and Soil Carbon Sequestration Cost in China AgEcon
Li, Man; Wu, JunJie; Deng, Xiangzheng.
This project examines the driving forces behind the land-use change and evaluates the effects of land-use transition on soil organic carbon density and sequestration cost in China. It contributes to the literature in three aspects. First, it applies a discrete choice method to model multiple land-use options with a unique set of high-quality data. Second, it conducts a comprehensive analysis of biophysical characteristics and changes in soil carbon storage caused by land-use change. Third, it examines the economic efficiency of alternative land use policies as instruments for carbon sequestration in China.
Tipo: Conference Paper or Presentation Palavras-chave: Carbon sequestration; Land-use; Soil organic carbon density; China; Environmental Economics and Policy; Land Economics/Use.
Ano: 2009 URL: http://purl.umn.edu/49568
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ENVIRONMENTAL AMENITIES AND COMMUNITY CHARACTERISTICS: AN EMPIRICAL STUDY OF PORTLAND, OREGON AgEcon
Cho, Seong-Hoon; Wu, JunJie.
This paper examines equilibrium properties of local jurisdictions implied by the Tiebout-style model. A set of equilibrium conditions are derived from a general equilibrium model of local jurisdictions. The conditions are parameterized and empirically estimated in a two-stage procedure. The method is applied to communities in a Portland metropolitan area with an extension of public-good provision to include environmental amenities. The results suggest that the model can replicate many of the empirical regularities observed in the data. For example, the predicted income distributions across communities closely matched the observed distribution. The estimated income elasticity of housing demand is consistent with previous findings. One important...
Tipo: Conference Paper or Presentation Palavras-chave: Environmental Economics and Policy.
Ano: 2002 URL: http://purl.umn.edu/19863
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Environmental and Distributional Impacts of Conservation Targeting Strategies AgEcon
Wu, JunJie; Zilberman, David; Babcock, Bruce A..
Resource purchasing funds have become a major tool for environmental protection and resource conservation. These funds use various strategies to target resources for environmental conservation, the choice of which may lead to striking differences in environmental performance. This paper develops an analytical framework to compare the effects of alternative targeting strategies on consumer surplus, producer surplus, and environmental benefits. We demonstrate that ignoring the output price effect of purchasing funds reduces environmental gain from the purchasing fund and, in some cases, may make a purchasing fund counterproductive. A purchasing strategy that targets resources with the highest environmental benefits may be counterproductive even if the price...
Tipo: Working or Discussion Paper Palavras-chave: Conservation funds; Distributional effects; Environmental benefits; Targeting strategies; Environmental Economics and Policy; D1; D2.
Ano: 1999 URL: http://purl.umn.edu/18528
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EVALUATION OF CONSERVATION POLICIES FOR REDUCING NITROGEN LOADS TO THE MISSISSIPPI RIVER AND GULF OF MEXICO AgEcon
Tanaka, Katsuya; Wu, JunJie.
This study integrates economic and physical models to estimate the social costs of several commonly suggested policies (chemical-use tax and three types of conservation payments) for reducing nitrogen loads to the Mississippi River and for controlling hypoxia in the Gulf of Mexico. The economic models predict farmer's crop rotations, tillage practices, and participation in the Conservation Reserve Program (CRP) at more than 44,000 Natural Resource Inventory sites in the Upper Mississippi River Basin. The estimated land use changes under the four policies are incorporated into a physical model to assess their impact on nitrate-N concentrations in the Mississippi River. Results suggest that the fertilizer-use tax is much more cost-effective than the three...
Tipo: Conference Paper or Presentation Palavras-chave: Environmental Economics and Policy.
Ano: 2004 URL: http://purl.umn.edu/20135
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How Do Location Decisions of Firms and Households Affect Economic Development in Rural America? AgEcon
Wu, JunJie; Gopinath, Munisamy.
This paper examines the causes of spatial inequalities in economic development across rural America. A theoretical model is developed to analyze interactions between location decisions of firms and households as they are affected by natural endowments, accumulated human and physical capital, and economic geography. Based on the theoretical analysis, an empirical model is specified to quantify the effect of these factors on key indicators of economic development across counties in the United States. Preliminary results suggest that households are willing to trade better amenities for lower income, and firms take advantage of this tradeoff by locating in areas with better climate and more recreational opportunities. In equilibrium, counties with better...
Tipo: Conference Paper or Presentation Palavras-chave: Community/Rural/Urban Development.
Ano: 2005 URL: http://purl.umn.edu/19229
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Impacts of Agricultural Practices and Policies on Potential Nitrate Water Pollution in the Midwest and Northern Plains of the United States AgEcon
Wu, JunJie; Lakshminarayan, P.G.; Babcock, Bruce A..
An empirical model is developed to estimate the effects of alternative farming practices on potential nitrogen runoff and leaching in 128,591 National Resources Inventory sites across the Midwest and the Northern Plains of the United States. This model integrates the effects of soils, climate, crops, and management practices on nitrogen loss. The model is applied to evaluation of two policy scenarios. The first scenario reduces N fertilizer application rates by 25 percent through the soil N test. The second replaces continuous cropping practices with crop rotations. The results show that policy effects vary widely across the study region. This analysis emphasizes the importance of conducting policy analysis on a disaggregated scale.
Tipo: Working or Discussion Paper Palavras-chave: Farming practices; Nitrogen runoff and leaching; Spatial heterogeneity; Disaggregated policy analysis; Environmental Economics and Policy.
Ano: 1996 URL: http://purl.umn.edu/18386
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LAND USE AND WATERSHED HEALTH IN THE UNITED STATES: AN EMPIRICAL ASSESSMENT AgEcon
Hascic, Ivan; Wu, JunJie.
This nation-scale, watershed-level analysis focuses on the major trends and the spatial pattern of land use and the impact on watershed health. We estimate a simultaneous equation system to analyze the impact of land use on aquatic health in watersheds across the United States.
Tipo: Conference Paper or Presentation Palavras-chave: Land Economics/Use.
Ano: 2004 URL: http://purl.umn.edu/20303
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Land Use Changes: Economic, Social, and Environmental Impacts AgEcon
Wu, JunJie.
Tipo: Journal Article Palavras-chave: Land Economics/Use; Q24; Q28.
Ano: 2008 URL: http://purl.umn.edu/94681
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MEASURING INTERACTIONS AMONG URBAN DEVELOPMENT, LAND USE REGULATIONS, AND PUBLIC FINANCE AgEcon
Cho, Seong-Hoon; Wu, JunJie.
In this paper, a theoretical model is developed to analyze the interactions among residential development, land use regulations, and public financial impacts (public expenditure and property tax). A simultaneous equations system with self-selection and discrete dependent variables is estimated to determine the interactions for counties in the five western states (California, Idaho, Nevada, Oregon, and Washington). The results show that county governments are more likely to impose land use regulations when facing rapid land development, high public expenditure and property tax. The land use regulations, in turn, decrease land development, long-run public expenditure, and property tax at the cost of higher housing prices and property tax. During the...
Tipo: Conference Paper or Presentation Palavras-chave: Community/Rural/Urban Development; Land Economics/Use.
Ano: 2001 URL: http://purl.umn.edu/20774
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MICRO VERSUS MACRO ACREAGE RESPONSE MODELS: DOES SITE-SPECIFIC INFORMATION MATTER? AgEcon
Wu, JunJie; Adams, Richard M..
Because requisite micro data frequently are unavailable, it is common practice to use aggregate data to estimate economic relationships representing the behavior of individual agents. A substantial body of literature has examined conditions under which inferences between micro and aggregate specifications can be made. Less attention has been focused on the relative accuracy of predictions for each scale of model. In an empirical application, we compare the goodness-of-fit measures of eight sets of acreage response models, varying in aggregation from field- (micro-) level to regional- (macro-) level models. Results suggest aggregate models are superior to the micro model in predicting acreage response, even thought the micro models contain substantially...
Tipo: Journal Article Palavras-chave: Agribusiness.
Ano: 2002 URL: http://purl.umn.edu/31074
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Optimal Design of a Voluntary Green Payment Program Under Asymmetric Information AgEcon
Wu, JunJie; Babcock, Bruce A..
Green payment programs, where the government pays farmers directly for environmental benefits, have been proposed as an alternative to the current method of achieving environmental benefits by restricting farming practices in exchange for deficiency payments. This paper presents a voluntary green payment program using the principles of mechanism design under asymmetric information. The information asymmetry arises because government knows only the distribution of individual farmers' production situations, rather than farm-specific information. The program is applied to irrigated corn production in the Oklahoma Panhandle, where nitrogen fertilizer is a nonpoint source of pollution. We demonstrate empirically that a green payment program can increase farm...
Tipo: Working or Discussion Paper Palavras-chave: Environmental Economics and Policy.
Ano: 1995 URL: http://purl.umn.edu/18325
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OPTIMAL DESIGN OF A VOLUNTARY GREEN PAYMENT PROGRAM UNDER ASYMMETRIC INFORMATION AgEcon
Wu, JunJie; Babcock, Bruce A..
Green payment programs, where the government pays farmers directly for environmental benefits, are an alternative to the current method of achieving environmental benefits which restricts farming practices in exchange for deficiency payments. This article presents a voluntary green payment program using the principles of mechanism design under asymmetric information. Information asymmetry arises because the government knows only the distribution of farmers’' production situations, rather than farm-specific information. The program is demonstrated with irrigated corn production in the Oklahoma high plains. A green payment program can reduce budget costs and pollution, while increasing the net social value of corn production.
Tipo: Journal Article Palavras-chave: Environmental Economics and Policy.
Ano: 1995 URL: http://purl.umn.edu/30774
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Optimal Design of Government Hierarchy for Ecosystem Service Provision AgEcon
Stone, Edward A.; Wu, JunJie.
There is broad concern that humans are transforming our environment. This transformation has potential to impact humanity as we depend on the environment ecosystem services. According to the Millennium Assessment (2005), degradation and unsustainable exploitation presently threaten over 60% of ecosystem services with real implications for health and standards of living. Furthermore, both the exploitation of ecosystem services and the growth rate of that exploitation have been far higher in recent decades than ever before due to population growth and rising standards of living, i.e. consumption. Increasing pressure on ecosystem services has driven thinking on mitigation strategies. Payment for ecosystem services (PES) has emerged as a strategy to...
Tipo: Conference Paper or Presentation Palavras-chave: Environmental Economics and Policy.
Ano: 2008 URL: http://purl.umn.edu/6253
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Optimal Economic Landscapes with Habitat Fragmentation Effects AgEcon
Lewis, David J.; Wu, JunJie.
Habitat fragmentation is widely considered a primary threat to biodiversity. This paper develops a theoretical model of land use to analyze the optimal conservation of landscapes when land quality is spatially heterogeneous and wildlife habitat is fragmented and socially valuable. When agriculture is the primary cause of fragmentation, we show that reforestation efforts should be targeted to the most fragmented landscapes with an aggregate share of forest equal to a threshold, defined by the ratio of the opportunity cost of conversion to the social value of core forest. When urban development is the primary cause of fragmentation, we show how spatial heterogeneity in amenities and household neighbor preferences affect the optimal landscape and the design...
Tipo: Conference Paper or Presentation Palavras-chave: Land Economics/Use.
Ano: 2005 URL: http://purl.umn.edu/19425
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