منابع مشابه
Impacts of Nafta on the Valencia Orange Industries of Arizona and Sonora, Mexico
As perennial fruits, oranges rank only behind grapes in terms of total area planted, volume and value of production in Sonora (SARH). Prior to NAFTA only a small portion of Sonora's orange crop was exported to the U.S., and the remainder was consumed in the fresh domestic market (Donnadieu). Profits per carton sold in Mexico were greater than those earned by Sonoran exports to the United States...
متن کاملA Spatial Multiagent Model of Border Security for the Arizona–Sonora Borderland
We report the results of the first sprint of a project to build decision support tools for border security that incorporate interactions among border security forces, smugglers and the population and represent integrated technology architectures made up of fixed and mobile sensor and surveillance networks. To demonstrate the feasibility of social simulation for the security of the Southwestern ...
متن کاملGrowing seasons in a chemical transport model
Introduction Conclusions References Tables Figures Back Close Full Screen / Esc Biogeosciences Discussions This discussion paper is/has been under review for the journal Biogeosciences (BG). Please refer to the corresponding final paper in BG if available. Abstract Introduction Conclusions References Tables Figures Back Close Full Screen / Esc Abstract Chemical transport models (CTMs), used for...
متن کاملTemperature Sensitivity of Soil Respiration to Nitrogen Fertilization: Varying Effects between Growing and Non-Growing Seasons
Nitrogen (N) fertilization has a considerable effect on food production and carbon cycling in agro-ecosystems. However, the impacts of N fertilization rates on the temperature sensitivity of soil respiration (Q10) were controversial. Five N rates (N0, N45, N90, N135, and N180) were applied to a continuous winter wheat (Triticum aestivum L.) crop on the semi-arid Loess Plateau, and the in situ s...
متن کاملPartitioning of Nitrogen over Five Growing Seasons in Tallgrass Prairie
Annual spring burning of tallgrass prairie increases plant biomass production despite losses of N and lower net N mineralization. To better understand how burning influences the cycling of N in prairie, '5N was injected to soil as NH4+, and the partitioning between plant and soil N pools was followed over five growing seasons in annually burned and unburned prairie. Applied '5N was rapidly immo...
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ژورنال
عنوان ژورنال: Journal of Agronomic Education
سال: 1982
ISSN: 0094-2391
DOI: 10.2134/jae.1982.0029