Resultados de búsqueda - "Chang’an"

Precipitation characteristics of the South American monsoon system derived from multiple datasets por Carvalho, Leila M. V., Jones, C., Posadas, A., Quiróz, R., Bookhagen, B., Liebmann, B.

“…This suggests that significant uncertainties exist in the characterization of extreme precipitation, an issue that is highly important in the context of climate variability and change in South America.…”
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Simulating rural environmentally and socio-economically constrained multi-activity and multi-decision societies in a low-data context: A challenge through empirical agent-based mod... por Saqalli, M., Gerard, Bruno G., Bielders, Charles L., Defourny, Pierre

“…The purpose of the work is to build a valid and robust model that overcome this lack of data by building a individual specific system of behaviour rules conditioning these differential accesses showing the long-term catalytic effects of small changes of social rules. The model-building methodology is thereby crucial: the interviewing process provided the behaviour rules and criteria while the context, i.e. the economic, demographic and agro-ecological environment is described following published or unpublished literature. …”
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Conversion of intact peat swamp forest to oil palm plantation: effects on soil CO2 fluxes in Jambi, Sumatra por Comeau L, Hergoualc'h, Kristell, Smith, J.U., Verchot, Louis V.

“…The soil CO2 flux should be separated into its auto- and heterotrophic components and balanced with C inputs and other C outputs in further studies to determine soil net atmospheric impacts on the climate system of this land-use change.…”
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Beneficiary-centered management of irrigation systems: Retrospection on recent endeavors: Proceedings of the workshop held at the Irrigation Department, Colombo, Sri Lanka, 25th Ma... por Haq, K.A., Nandaratna, S.M.K.B.

“…In 1979, the government and USAID selected the Left Bank of the Gal Oya Irrigation System for rehabilitation. This planned change program was officially called the Gal Oya Rehabilitation and Water Management Project. …”
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Identification of immediate response genes dominantly expressed in juvenile resistant and susceptible Biomphalaria glabrata snails upon exposure to Schistosoma mansoni por Ittiprasert, W., Miller, A., Myers, J., Nene, Vishvanath M., El-Sayed, N.M., Knight, M.

“…While ESTs related to C-type lectin and low-density lipoprotein receptor were induced only by exposure to normal miracidia. By comparing changes in gene expression between resistant and susceptible juvenile snails responding either to normal or attenuated parasites, we can conclude that the transcription of genes associated with the intra-dermal penetration process of the snail host by invading miracidia may need to be taken into account when assessing differential gene expression between resistant and susceptible strains of B. glabrata in relation to S. mansoni exposure.…”
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Inventory, sustainability assessment, and upscaling of best agricultural water management practices por Loulseged, Makonnen, Awulachew, Seleshi Bekele, Jayasinghe, Gayathree, Hagos, Fitsum, Erkossa, Teklu

“…It is the belief of many analysts that agrarian countries like Ethiopia that depend on rain-fed agriculture are significantly vulnerable to rainfall variability, the risk which tends to aggravate with global climate change. Consequently, it is believed that future increases in food supplies and economic prosperity depend heavily on effective agricultural water management. …”
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Analysis of trends in extreme flood events and mitigation strategies in SOUTHEAST ASIA. [Abstract only]. por Amarnath, Giriraj, Pavelic, Paul, Smakhtin, Vladimir U.

“…This approach will help in identifying basin to regional-scale temporal changes in inundated area; duration of inundation cycles between large-medium-small scale floods. …”
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Livestock and sustainable nutrient cycling in mixed farming systems of sub-Saharan Africa. Volume II: Technical papers. Proceedings of an international conference por Powell, J.M., Fernández Rivera, S., Williams, Timothy O., Renard, C.

“…The climatic and socio-economic changes currently taking place in many parts of sub-Saharan Africa suggest that sustainable increases in agricultural production from an increasingly fragile ecosystem require new and innovative crop, livestock, and soil-management strategies. …”
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Long-term monitoring (1960-2008) of the river-sediment transport in the Red River Watershed (Vietnam): temporal variability and dam-reservoir impact por Dang, T.H., Coynel, A., Orange, Didier, Blanc, G., Etcheber, H., Le, L.A.

“…Therefore, the median discharge pre- (3389 m3/s) and post 1989 (3495 m3/s) are similar indicating there was little or no change between both periods. Sediment rating curves (power law-type; SPM=aQb) were fitted for both periods (1960-1989; 1990-2008). …”
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Co-composting of faecal sludge and organic solid waste for agriculture: process dynamics por Cofie, Olufunke O., Koné, D., Rothenberger, S., Moser, D., Zubruegg, C.

“…There was no significant effect of different turning frequencies on the temperature changes and the quality of mature compost. The final product contained C/N ratio of 13 and NO3/NH4-ratio of about 7.8, while TVS was about 21% TS and the NH4-N content was reduced to 0.01%. …”
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Soil carbon stocks and stability across an altitudinal gradient in southern Peru por Segnini, A., Posadas, A., Quiróz, R., Milori, D.M.B.P., Vaz Patto, Maria C, Martin Neto, L.

“…Results suggest that diversified production systems with crops and livestock are more stable for carbon stocks, which might be essential to help farmers adapting to the effects of climate change. Therefore, viable land uses, from the carbon economy perspective, must be promoted to support sustainable agricultural practices for most important ecological conditions.…”
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Climate effects on yield components as affected by genotypic responses to variable environmental conditions in upland rice systems at different altitudes por Shrestha, S., Asch, F., Dusserre, J., Ramanantsoanirina, A., Brueck, H.

“…The contribution of individual yield components to final yield changed with the environmental conditions the rice experienced during the development stages. …”
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Selección de líneas de maíz (Zea mays L.) con resistencia al virus del mosaico de la caña de azúcar (SCMV) por Salazar Erazo, Sandra Milena, León, C. de

“…Recent changes in the production systems of maize (Zea mays L.), including staggered and continue growing of the cultivation in Colombia, have increased the incidence of some diseases, among these stands out the sugar cane mosaic virus (SCMV). …”
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Complementary effects of organic and mineral fertilizers on maize production in the smallholder farms of Meru South District, Kenya por Mutegi, Edwin Mwiti, Biu Kung'u , James, Mucheru-Muna, M., Pieter, Pypers, Mugendi, Daniel Njiru

“…The general soil fertility parameters changed slightly with Calcium, Magnesium and Potassium increasing in all treatments. …”
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Simulating potential growth and yield of oil palm (Elaeis guineensis) with PALMSIM: Model description, evaluation and application por Hoffmann, M.P., Castañeda Vera, A., Wijk, Mark T. van, Giller, Kenneth E., Oberthür, Thomas, Donough, Christopher R., Whitbread, Anthony M.

“…Sensitivity analysis showed that PALMSIM is robust: simulated changes in yield caused by modifying the parameters by 10% are comparable to other tree crop model evaluations. …”
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Analysis of trends in extreme flood events and mitigation strategies in South East Asia por Amarnath, Giriraj, Pavelic, Paul, Smakhtin, Vladimir U.

“…This approach will help in identifying basin to regional-scale temporal changes in inundated area; duration of inundation cycles between large-medium-small scale floods. …”
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Representative agricultural pathways and scenarios: a trans-disciplinary approach to agricultural model inter-comparison, improvement and climate impact assessment por Valdivia RO, Antle, John M., Claessens, Lieven, Nelson, Gerald C., Rosenzweig, Cynthia, Ruane, Alex C., Vervoort, Joost M.

“…The global change research community has recognized that new pathway and scenario concepts are needed to implement impact and vulnerability assessment that is logically consistent across local, regional and global scales. …”
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Managing Potato Biodiversity to Cope with Frost Risk in the High Andes: A Modeling Perspective por Condori, B., Hijmans R.J., Ledent, J.F., Quiróz, R.

“…In spite of the existing warming trend, climate change models forecast high variability, including freezing temperatures. …”
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Indigenous pig management practices in rural villages of Western Kenya por Mutua, Florence K., Dewey, Catherine E., Arimi, S.M., Ogara, W.O., Githigia, S.M., Levy, M., Schelling, E.

“…Improved knowledge coupled with changes in local husbandry practices would improve productivity, increase family incomes and safeguard the community from potential health risks associated with pig rearing.…”
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Impact of land management on soil macrofauna in the Eastern plains of Colombia por Decaëns, Thibaud, Lavelle, Patrick M., Jiménez Jaén, J.J., Escobar, G., Rippstein, G, Schneidmadl, J, Sanz Scovino, José Ignacio, Hoyos, P., Thomas, Richard J.

“…Macroinvertebrate communities of the well drained savannas of Colombia are very sensitive to environmental changes associated with agricultural intensification. …”
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