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| Registros recuperados: 131 | |
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| LIU, J.; HULL, V.; BATISTELLA, M.; DEFRIES, R.; DIETZ, T.; FU, F.; HERTEL, T. W.; IZAURRALDE, R. C.; LAMBIN, E. F.; LI, S.; MARTINELLI, L. A.; MCCONNELL, W. J.; MORAN, E. F.; NAYLOR, R.; OUYANG, Z.; POLENSKE, K. R.; REENBERG, A.; ROCHA, G. DE M.; SIMMONS, C. S.; VERBURG, P. H.; VITOUSEK, P. M.; ZHANG, F.; ZHU, C.. |
| Interactions between distant places are increasingly widespread and influential, often leading to unexpected outcomes with profound implications for sustainability. Numerous sustainability studies have been conducted within a particular place with little attention to the impacts of distant interactions on sustainability in multiple places. although distant forces have been studied, they are usually treated as exogenous variables and feedbacks have rarely been considered. To understand and integrate various distant interactions better, we propose an integrated framework based on telecoupling, an umbrella concept that refers to socioeconomic and environmental interactions over distances. The concept of telecoupling is a logical extension of research on... |
| Tipo: Artigo de periódico |
Palavras-chave: Socioeconomic and environmental interactions; Investment; Knowledge transfer; Migration; Species invasion; Sustainability; Teleconnection; Telecoupling; Transnational land deals; Water transfer.; Agents; Causes; Coupled human and natural systems; Coupled human-environment systems; Coupled socialecological systems; Dispersal; Distant interactions; Effects; Feedbacks; Flows; Globalization; Technology transfer; Trade.. |
| Ano: 2013 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/961534 |
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| YUAN, S.; LINQUIST, B. A.; WILSON, L. T.; CASSMAN, K. G.; STUART, A. M.; PEDE, V.; MIRO, B.; SAITO, K.; AGUSTIANI, N.; ARISTYA, V. E.; KRISNADI, L. Y.; ZANON, A. J.; HEINEMANN, A. B.; CARRACELAS, G.; SUBASH, N.; BRAHMANAND, P. S.; LI, T.; PENG, S.; GRASSINI, P.. |
| Future rice systems must produce more grain while minimizing the negative environmental impacts. A key question is how to orient agricultural research & development (R&D) programs at national to global scales to maximize the return on investment. Here we assess yield gap and resource-use efficiency (including water, pesticides, nitrogen, labor, energy, and associated global warming potential) across 32 rice cropping systems covering half of global rice harvested area. We show that achieving high yields and high resource-use efficiencies are not conflicting goals. Most cropping systems have room for increasing yield, resource-use efficiency, or both. In aggregate, current total rice production could be increased by 32%, and excess nitrogen almost... |
| Tipo: Artigo de periódico |
Palavras-chave: Resource-use efficiency; Global agricultural; Investment; Arroz; Oryza Sativa; Impacto Ambiental; Produção Agrícola; Rice; Environmental impact; Resource management; Cropping systems; Crop production. |
| Ano: 2021 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1137479 |
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| RIBAS, L. C.; GRACA, L. R.. |
| o presente trabalho procurou caracterizar um critério de decisão para fins de reforma econômica de povoamentos florestais de Pinus sp., objetivando, desta forma, a substituição, no tempo, de povoamentos de baixa qualidade e produtividade, por outros em mais produtivos. O critério econômico baseu-se na maximização do lucro um processo de substituição (reforma). Sugeriu-se, que a reforma seja efetuada imediatamente após se efetivar o próximo desbaste planejado de um determinado povoamento. Por outro lado, condições específicas de custos, receitas, tempo e taxa de juros condicionarão o melhor momento de se reformar determinado povoamento florestal. |
| Tipo: Parte de livro |
Palavras-chave: Investment; Forest planning.; Análise Econômica; Investimento; Planejamento Florestal.; Pinus; Economic analysis.. |
| Ano: 1989 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/300439 |
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| Martínez-Reina,Antonio María; Todececilla,Lilibet; Rodríguez-Pinto,María del Valle; Cordero,Carina Cecilia; Grandett-Martínez,Liliana María. |
| Abstract The objective of this work was to characterize technologically and economically the sweet chili pepper production system in the Caribbean region of Colombia. A survey was applied to 60 farmers using the simple random sampling technique. The economic returns were analyzed in the producing areas of San Juan del Cesar, in the department of La Guajira, and Ponedera, in the department of Atlántico, with an average of 0.6 hectares of the areas used for planting the sweet chili pepper. The average age of the farmers is 51 years old, with more than 11 years of experience in this crop. The results present differences in terms of production efficiency; for example, it was found that it is higher for the town of San Juan del Cesar, which is explained because... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agriculture; Costs; Income; Investment; Returns. |
| Ano: 2021 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122021000100042 |
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| Esparza Vela, Mario Edgar. |
| El presente documento analiza la socioeconomía de la migración rural en el estado de Durango, enfatizando en los aspectos de recepción y asignación productiva de las remesas. Uno de los objetivos de la investigación fue conocer las características del migrante y de la unidad de producción familiar, que permitieran la definición de las variables significativas, sobre las que puede incidir la política económica para reorientar o fortalecer el uso productivo de las remesas. Se construyó un índice que muestra el potencial de inversión productiva, según el cual dicho potencial existe en 13 de los municipios del estado. La investigación muestra que la población migrante del estado inicia su vida migratoria en una edad joven (22 años), es principalmente... |
| Tipo: Tesis |
Palavras-chave: Migración; Remesas; Inversión; Durango; Sector Rural; Doctorado; Economía; Migration; Remittances; Investment; Rural Sector. |
| Ano: 2007 |
URL: http://hdl.handle.net/10521/1493 |
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| Valencia Sandoval, Karina. |
| El nopal (Opuntia spp.) es una especie básica en el consumo de los mexicanos, ya que en torno a este producto giran innumerables actividades económicas del campo y la industria. Además, el nopal puede ser considerado como un alimento funcional, es decir, que mejora la salud de quien lo consume. En el presente trabajo se hizo un estudio comparativo de la ganancia obtenida con un cultivo de nopal sin diferenciar y un cultivo en el que se invierten recursos, con el fin de promocionar sus características funcionales, en el que es posible diferenciar. Se usó una evaluación tradicional, obteniendo el valor actual neto, y una evaluación con opciones reales que, comparado con la evaluación tradicional, contempla la volatilidad en los precios y el cambio de... |
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Palavras-chave: Opuntia spp.; Evaluación tradicional; Expansión; Inversión; Valor; Traditional assessment; Expansion; Investment; Critical value; Maestría; Economía. |
| Ano: 2010 |
URL: http://hdl.handle.net/10521/58 |
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| Valencia Sandoval, Karina. |
| El nopal (Opuntia spp.) es una especie básica en el consumo de los mexicanos, ya que en torno a este producto giran innumerables actividades económicas del campo y la industria. Además, el nopal puede ser considerado como un alimento funcional, es decir, que mejora la salud de quien lo consume. En el presente trabajo se hizo un estudio comparativo de la ganancia obtenida con un cultivo de nopal sin diferenciar y un cultivo en el que se invierten recursos, con el fin de promocionar sus características funcionales, en el que es posible diferenciar. Se usó una evaluación tradicional, obteniendo el valor actual neto, y una evaluación con opciones reales que, comparado con la evaluación tradicional, contempla la volatilidad en los precios y el cambio de... |
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Palavras-chave: Opuntia spp.; Evaluación tradicional; Expansión; Inversión; Valor; Traditional assessment; Expansion; Investment; Critical value; Maestría; Economía. |
| Ano: 2010 |
URL: http://hdl.handle.net/10521/58 |
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| Liu, Jianguo; Michigan State University, USA; liuji@msu.edu; Hull, Vanessa; Michigan State University, USA; hullvane@csis.msu.edu; Batistella, Mateus; EMBRAPA Satellite Monitoring, Campinas, SP, Brazil; mb@cnpm.embrapa.br; DeFries, Ruth; Columbia University, USA; rd2402@columbia.edu; Dietz, Thomas; Michigan State University, USA; tdietz@msu.edu; Fu, Feng; Massachusetts Institute of Technology, USA; fufengenergy@gmail.com; Hertel, Thomas W.; Purdue University, USA; hertel@purdue.edu; Izaurralde, R. Cesar; University of Maryland, USA; cesar.izaurralde@pnnl.gov; Lambin, Eric F.; Stanford University, USA; elambin@stanford.edu; Li, Shuxin; Michigan State University, USA; lishu@msu.edu; McConnell, William J.; Michigan State University, USA; mcconn64@msu.edu; Moran, Emilio F.; Michigan State University, USA; moranef@msu.edu; Naylor, Rosamond; Stanford University, USA; Roz@stanford.edu; Ouyang, Zhiyun; Chinese Academy of Sciences, Beijing, China; zyouyang@rcees.ac.cn; Polenske, Karen R.; Massachusetts Institute of Technology, USA; krp@mit.edu; Reenberg, Anette; University of Copenhagen, Copenhagen, Denmark; Ar@geogr.ku.dk; Simmons, Cynthia S.; Michigan State University, USA; simmo108@msu.edu; Verburg, Peter H.; Institute for Environmental Studies, VU University Amsterdam, Netherlands; Peter.Verburg@ivm.vu.nl; Vitousek, Peter M.; Stanford University, USA; vitousek@leland.stanford.edu; Zhang, Fusuo; China Agricultural University, Beijing, China; zhangfs@cau.edu.cn; Zhu, Chunquan; International Union for Conservation of Nature, China; caomu1963@126.com. |
| Interactions between distant places are increasingly widespread and influential, often leading to unexpected outcomes with profound implications for sustainability. Numerous sustainability studies have been conducted within a particular place with little attention to the impacts of distant interactions on sustainability in multiple places. Although distant forces have been studied, they are usually treated as exogenous variables and feedbacks have rarely been considered. To understand and integrate various distant interactions better, we propose an integrated framework based on telecoupling, an umbrella concept that refers to socioeconomic and environmental interactions over distances. The concept of telecoupling is a logical extension of research on... |
| Tipo: Peer-Reviewed Synthesis |
Palavras-chave: Agents; Causes; Coupled human-environment systems; Coupled human and natural systems; Coupled social-ecological systems; Dispersal; Distant interactions; Effects; Feedbacks; Flows; Globalization; Investment; Knowledge transfer; Migration; Socioeconomic and environmental interactions; Species invasion; Sustainability; Technology transfer; Teleconnection; Telecoupling; Trade; Transnational land deals; Water transfer. |
| Ano: 2013 |
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| Registros recuperados: 131 | |
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