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| Registros recuperados: 311 | |
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| Abila, R.O.; Othina, A.. |
| Wetlands in most parts of the world are under threat of over-exploitation partly because their socio-economic value is not well known. Yala Wetland, the largest freshwater wetland in Kenya, with a large part of it bordering Lake Victoria’s shoreline, faces even greater threats of extinction. This wetland measures about 17,500 ha and is host to a number of indigenous fish species, animals and plants which are exploited by the local communities for subsistence and commercial purposes.There has been pressure to reclaim portions of this wetland for agricultural activity. So far, 2,300 ha has, indeed, been drained for commercial agriculture. Furthermore, it is difficult to control effort in the exploitation of the remaining wetland resources since the... |
| Tipo: Proceedings Paper |
Palavras-chave: Wetlands; Inland waters; Overexploitation; Socioeconomic aspects; Fishery resources; Resource management; Water reservoirs; Monitoring systems; Land use; Resource conservation; Environment management; Protected resources; Freshwater lakes; Inland fisheries; Lake fisheries; Wetlands; Inland waters; Overexploitation; Http://aims.fao.org/aos/agrovoc/c_8371; Http://aims.fao.org/aos/agrovoc/c_3876; Http://aims.fao.org/aos/agrovoc/c_28014. |
| Ano: 2006 |
URL: http://hdl.handle.net/1834/1493 |
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| Ashley, C.. |
| Namibia is the most arid country south of the Sahara, with an economy fundamentally reliant on natural resources. The most scarce resource is water, and the main economic sectors are mining, fishing, agriculture, and wildlife-based tourism. The majority of the population live in rural areas, dependent on a wide range of natural resources. Sustainable use and conservation of biodiversity are therefore essential for the future. The question is how to achieve it? One key strategy is to assess -- and where necessary redesign -- economic incentives affecting use of natural resources. This paper illustrates the role of economic incentives in influencing the use of land-based renewable natural resources (RNR). It identify incentives which are being, or need to... |
| Tipo: Other |
Palavras-chave: Land use; Biodiversity; Conservation. |
| Ano: 1996 |
URL: http://hdl.handle.net/1834/537 |
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| Froufe, Luís Cláudio Maranhão; Rachwal, Marcos Fernando Gluck; Seoane, Carlos Eduardo Sicoli. |
| Carbon storage of agroforestry systems, regenerated areas, conventional agriculture and pasture was evaluated at Alto Ribeira Valley region, São Paulo State, Brazil, in different compartments of Land-use systems (LUS). In soil, classified as Entisols and Inceptisols, we found similarities among all LUS, dued to their low contents of organic carbon, and similar values of bulk density. The total carbon stocked on land-use systems, greater amounts were determined on regenerated areas (115.78 Mg ha-1), followed by agroforestry systems (75.38 Mg ha-1), agriculture (47.07 Mg ha-1), and pasture (36.01 Mg ha-1). Despite their conservative characteristic, the silvicultural practices of multistrata agroforestry systems have to be improved for forest production and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Conservação dos recursos naturais; Floresta Ombrófila Densa; Estoque de carbono; SAF; Sistemas de uso do solo Agroforestry systems; Atlantic Rain Forest; Carbon sink; Land use; Natural resource conservation. |
| Ano: 2011 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/180 |
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| Torres, Carlos Moreira Miquelino Eleto; Gonçalves Jacovine, Laércio Antônio; Oliveira Neto, Silvio Nolasco de; Brianezi, Daniel; Alves, Eliana Boaventura Bernardes Moura. |
| Os sistemas agroflorestais são ferramentas integrantes das políticas públicas brasileira para mudanças climáticas, que visam à mitigação das emissões desses gases. Dada a importância destas ferramentas na estocagem de carbono na superfície terrestre e sua contribuição na minimização das mudanças climáticas é preciso avaliar o seu potencial de estocagem de carbono, de forma a balizar políticas públicas de incentivo às atividades. Neste sentido, objetivou-se levantar os dados de pesquisa disponíveis que demonstrem a estocagem de carbono de diferentes modelos de sistemas agroflorestais. As pesquisas indicam que há uma grande variação no incremento médio em carbono nos sistemas, variando de 1,26 a 11,19 t C ha-1 ano-1, dependendo da sua estrutura. Assim,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Recursos Florestais; Engenharia Florestal; SAF Sequestro de carbono SAF Sistemas de uso do solo Carbon sequestration; Crop-livestock-forest integration; Land use. |
| Ano: 2014 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/633 |
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| Viana,Laura Tillmann; Bustamante,Mercedes Maria da Cunha; Molina,Marirosa; Pinto,Alexandre de Siqueira; Kisselle,Keith; Zepp,Richard; Burke,Roger A. |
| The objective of this work was to evaluate the effects of fire regimes and vegetation cover on the structure and dynamics of soil microbial communities, through phospholipid fatty acid (PLFA) analysis. Comparisons were made between native areas with different woody covers ("cerrado stricto sensu" and "campo sujo"), under different fire regimes, and a 20-year-old active palisadegrass pasture in the Central Plateau of Brazil. Microbial biomass was higher in the native plots than in the pasture, and the highest monthly values were observed during the rainy season in the native plots. No significant differences were observed between fire regimes or between communities from the two native vegetation types. However, the principal component (PC) analysis... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Land use; Microbial diversity; PLFA; Savannas; Seasonality. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2011001200012 |
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| Morgado,Luiz Balbino; Willey,Robert William. |
| Nitrogen supply and plant population are basic parameters for cereal-legume intercropping. In order to study plant population and nitrogen fertilizer effects on yield and yield efficiency of maize-bean intercropping, a field experiment was established. Three bean plant populations and three nitrogen levels were used. Maize dry matter accumulation decreased with increases in bean plant population. Competitive effect of intercrop beans on maize yields was high at higher plant populations, being decreased by nitrogen fertilizer; application of 50 kg ha-1 N was very efficient in increasing maize cob yield. Intercropping significantly decreased harvest index of beans in all plant population and nitrogen fertilizer situations. The efficiency of intercropping,... |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Zea mays; Phaseolus vulgaris; Mixed cropping; Land use. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2003001100002 |
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| Bergeron, Gilles; Pender, John L.. |
| This study investigates the micro-determinants of land use change using community, household and plot histories, an ethnographic method that constructs panel data from systematic oral recalls. A 20-year historical timeline (1975-1995) is constructed for the village of La Lima in central Honduras, based on a random sample of 97 plots. Changes in land use are examined using transition analysis and multinomial logit analysis. Transition analysis shows that land use transitions were relatively infrequent in areas under extensive cultivation, but more so in areas of intensive cultivation; and that most changes favored intensification. Econometric analysis suggests that land use intensification was influenced by plot level variables (especially altitude, slope,... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Honduras; Land use; Econometrics--Case studies; Horticultural products; Land management; Land Economics/Use. |
| Ano: 1999 |
URL: http://purl.umn.edu/97464 |
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| Eija, Pouta; Sami, Myyra; Kyosti, Pietola. |
| Land improvements with long pay-back periods are often delayed on leased agricultural land, resulting in social costs through land degradation, decreased land productivity and environmental problems. An important question is thus how landowners would respond to regulations and mandates concerning land improvements. Based on a landowner survey, we analyse landowner choices under certain land improvement regulations, using the currently dominant choice of leasing land for agricultural use as the benchmark. The results indicated that land leasing will continue to increase in the future, but if the landowner mandate to co-finance costly land improvements is increased, landowners are predicted to respond significantly to these mandates and search for other land... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Contingent behaviour; Latent class model; Landlord; Land use; Heterogeneity; Land Economics/Use; Q15; Q24; Q28. |
| Ano: 2011 |
URL: http://purl.umn.edu/114770 |
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| Hegyi, Judit; Kacz, Karoly; Kettinger, Anita. |
| In the course of a survey we’ve researched private farms of the West-Transdanubian Region in terms of their land area, economic farm size, land use and types of their enterprise. The research of agricultural enterprises from these points of view was the further share of our work. 371 pieces of questionnaire were sent farms of enterprises (joint-stock company, ltd., deposit company, co-operative) in Gyôr-Moson-Sopron, Vas and Zala counties, from which 72 assessable documents returned. The questionnaire asked the farmers the type of their farming (according to the rate of Standard Gross Margin), their economic farm size and data of land property and land use (in the year of 2002, 2004 and 2006). It also enquired about the claim to change of land size, the... |
| Tipo: Journal Article |
Palavras-chave: Agricultural enterprises; Questionnaire; Economic farm size; Land use; Conceptions of future expansion; Farm Management; Land Economics/Use. |
| Ano: 2008 |
URL: http://purl.umn.edu/53970 |
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| Registros recuperados: 311 | |
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