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There are 9, 839 content items of different types and languages related to uso da terra on the Land Portal.

uso da terra

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Environmental Cognitions, Land Change and Social-Ecological Feedbacks: Local Case Studies of Forest Transition in Vietnam

Journal Articles & Books
Dezembro, 2013
Vietnam

Forest transition — i.e., the shift from decreasing to expanding forest cover — in the northern mountains of Vietnam was analyzed at the local scale in four villages from the 1970s to 2007–2008 to understand feedbacks from local environmental degradation on land uses, the conditions under which such feedbacks occur, and their possible roles in the transition. Remote sensing data were combined with field surveys including interviews, group discussions, mental and participatory mapping, observations and secondary sources.

Retaining Open Space with Purchasable Development Rights Programs

Journal Articles & Books
Dezembro, 2003

This paper examines the preservation of farmland through purchasable development rights. In a comparison of the estimated costs and benefits associated with the development of open space from 1982 to 1992, we show that these programs may provide a net benefit to society. An econometric model is employed to address the question of what factors explain both the creation of these programs and the magnitude of farmland preservation.

Land change variability and human–environment dynamics in the United States Great Plains

Journal Articles & Books
Dezembro, 2012
Estados Unidos

Land use and land cover changes have complex linkages to climate variability and change, biophysical resources, and socioeconomic driving forces. To assess these land change dynamics and their causes in the Great Plains, we compare and contrast contemporary changes across 16 ecoregions using Landsat satellite data and statistical analysis. Large-area change analysis of agricultural regions is often hampered by change detection error and the tendency for land conversions to occur at the local-scale.

Ecohydrological feedback mechanisms in arid rangelands: Simulating the impacts of topography and land use

Journal Articles & Books
Dezembro, 2009

The interaction between ecological and hydrological processes is particularly important in arid and semi-arid regions. Often the interaction between these processes is not completely understood and they are studied separately. We developed a grid-based computer model simulating the dynamics of the four most common vegetation types (perennial grass, annuals, dwarf shrubs and shrubs) and related hydrological processes in the region studied.

Application of Tabu Search Algorithm With a Coupled AnnAGNPS-CCHE1D Model to Optimize Agricultural Land Use

Journal Articles & Books
Dezembro, 2008

Abstract: A principal contributor to soil erosion and nonpoint source pollution, agricultural activities have a major influence on the environmental quality of a watershed. Impact of agricultural activities on the quality of water resources can be minimized by implementing suitable agriculture land-use types. Currently, land uses are designed (location, type, and operational schedule) based on field study results, and do not involve a science-based approach to ensure their efficiency under particular regional, climatic, geological, and economical conditions.

Temporary conservation for urban biodiversity

Journal Articles & Books
Dezembro, 2011

Urban habitats, particularly wastelands and brownfields, maintain rich biodiversity and offer habitat for many species, even rare and endangered taxa. However, such habitats are also under socio-economic pressures due to redevelopment for housing and industrial uses. In order to maintain urban biodiversity, it is currently unknown how much open area must be preserved and whether conservation is possible without complete exclusion from economic development.

TERRITORIAL ORDER OF THE HIGH ACRE BASIN

Conference Papers & Reports
Julho, 2008
Brasil
Oceânia

A implantação do ordenamento territorial do Alto Acre é etapa fundamental para o planejamento da ocupação dos espaços e direcionamento de atividades em busca do desenvolvimento regional. Este trabalho teve como objetivo criar um referencial teórico para a implantação do ordenamento territorial da região do Alto Acre.

Understanding species persistence for defining conservation actions: A management landscape for jaguars in the Atlantic Forest

Journal Articles & Books
Dezembro, 2013
América do Sul

Habitat models constitute useful instruments for understanding species-habitat interactions and can constitute helpful conservation tools. The Upper Paraná Atlantic Forest (UPAF) of South America still holds the world’s southernmost jaguar (Panthera onca) population.

Simple models of carbon and nitrogen cycling in New Zealand hill country pastures: exploring impacts of intensification on soil C and N pools

Journal Articles & Books
Dezembro, 2011
Nova Zelândia

Concerns about climate change and water quality make it necessary to have a better understanding of the cycling of carbon (C) and nitrogen (N) within landscapes. In New Zealand, pastoral farming on hill country is a major land use, and there is little information available at a landscape level on the cycling of C and N within these systems, particularly the impacts of land use intensification.

Hierarchical mapping of Northern Eurasian land cover using MODIS data

Journal Articles & Books
Dezembro, 2011

The Northern Eurasian land mass encompasses a diverse array of land cover types including tundra, boreal forest, wetlands, semi-arid steppe, and agricultural land use. Despite the well-established importance of Northern Eurasia in the global carbon and climate system, the distribution and properties of land cover in this region are not well characterized. To address this knowledge and data gap, a hierarchical mapping approach was developed that encompasses the study area for the Northern Eurasia Earth System Partnership Initiative (NEESPI).