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Issuesutilisation des terresLandLibrary Resource
There are 9, 789 content items of different types and languages related to utilisation des terres on the Land Portal.
Displaying 3961 - 3972 of 4598

Proyecto Frijol Zona Andina: Antropologia: Informe final

Reports & Research
Décembre, 1990
Pérou
Amérique du Sud
Amérique centrale

Anthropological work carried out by the PROFRIZA project in Cusco over 2 cropping seasons, between 1988-90, are reported. The status of bean cultivation in the region was assessed, as well as the experience acquired in seed production, small farmer management of farming activities, and the integration of farming communities that have old ways of exchanging products and services. Appropriate technology to promote crop improvement was identified, and crop management aimed at achieving good results on just one field, instead of several fields, and perhaps with low yields.

Quantifying soil macrofauna in a Colombian watershed

Journal Articles & Books
Décembre, 2001
Colombie
Amérique centrale
Amérique du Sud

From April to September 1994, macrofauna density, total biomass, and species diversity of earthworms were measured across a range of land use types in the Cabuyal River watershed. The methodology recommended by the Tropical Soil Biology and Fertility (TSBF) Program was used. Macrofauna density, biomass, and diversity of earthworm species varied considerably across land use types, and depths. Initial factor analysis yielded three factors that accounted for 71.8% of the total variance in macrofauna density.

Predicting bee community responses to land-use changes: Effects of geographic and taxonomic biases

Journal Articles & Books
Août, 2016

Land-use change and intensification threaten bee populations worldwide, imperilling pollination services. Global models are needed to better characterise, project, and mitigate bees' responses to these human impacts. The available data are, however, geographically and taxonomically unrepresentative; most data are from North America and Western Europe, overrepresenting bumblebees and raising concerns that model results may not be generalizable to other regions and taxa.

Predicting runoff risks by digital soil mapping

Journal Articles & Books
Février, 2016

Digital soil mapping (DSM) permits continuous mapping soil types and properties through raster formats considering variation within soil class, in contrast to the traditional mapping that only considers spatial variation of soils at the boundaries of delineated polygons. The objective of this study was to compare the performance of SoLIM (Soil Land Inference Model) for two sets of environmental variables on digital mapping of saturated hydraulic conductivity and solum depth (A + B horizons) and to apply the best model on runoff risk evaluation.

Principales insectos que atacan el grano de fríjol almacenado y su control [conjunto audiotutorial]

Journal Articles & Books
Décembre, 1979
Colombie
Amérique du Sud
Amérique centrale

This audiotutorial unit (cassette, printed script, 140 color slides, study guide, self-evaluation test), prepared by the Communication Support Unit at CIAT, is available for use with a manually or automatically synchronized slide projector/cassette tape recorder. Each unit is available from the Distribution Office at a cost of US$50; photocopies of the study guide alone can be obtained from the Bean Information Center.