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Issuescobertura do soloLandLibrary Resource
There are 2, 240 content items of different types and languages related to cobertura do solo on the Land Portal.

cobertura do solo

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Committed carbon emissions, deforestation, and community land conversion from oil palm plantation expansion in West Kalimantan, Indonesia

Journal Articles & Books
Dezembro, 2012
Indonésia

Industrial agricultural plantations are a rapidly increasing yet largely unmeasured source of tropical land cover change. Here, we evaluate impacts of oil palm plantation development on land cover, carbon flux, and agrarian community lands in West Kalimantan, Indonesian Borneo. With a spatially explicit land change/carbon bookkeeping model, parameterized using high-resolution satellite time series and informed by socioeconomic surveys, we assess previous and project future plantation expansion under five scenarios.

Assessing the Utility of Satellite Imagery with Differing Spatial Resolutions for Deriving Proxy Measures of Slum Presence in Accra, Ghana

Journal Articles & Books
Dezembro, 2012
Gana

Little research has been conducted on how differing spatial resolutions or classification techniques affect image-driven identification and categorization of slum neighborhoods in developing nations. This study assesses the correlation between satellite-derived land cover and census-derived socioeconomic variables in Accra, Ghana to determine whether the relationship between these variables is altered with a change in spatial resolution or scale.

Global characterization and monitoring of forest cover using Landsat data: opportunities and challenges

Journal Articles & Books
Dezembro, 2012
Global

The compilation of global Landsat data-sets and the ever-lowering costs of computing now make it feasible to monitor the Earth's land cover at Landsat resolutions of 30 m. In this article, we describe the methods to create global products of forest cover and cover change at Landsat resolutions. Nevertheless, there are many challenges in ensuring the creation of high-quality products. And we propose various ways in which the challenges can be overcome.

Soil water repellency in rangelands of Extremadura (Spain) and its relationship with land management

Journal Articles & Books
Dezembro, 2013
Espanha

Soil water repellency reduces infiltration capacity, enhancing overland flow and even runoff production, and may produce patchiness in water infiltration at the hillslope scale. Knowledge about hydrophobicity in rangelands of Mediterranean type climate and its relation with vegetation cover and land management is sparse. The objectives of the present work are to determine the degree and spatial occurrence of soil water repellency and to define its relationship with site characteristics, such as soil, vegetation and land management in rangelands of SW Spain.

Global forecasts of urban expansion to 2030 and direct impacts on biodiversity and carbon pools

Journal Articles & Books
Dezembro, 2012
Sri Lanka
África Ocidental
Global

Urban land-cover change threatens biodiversity and affects ecosystem productivity through loss of habitat, biomass, and carbon storage. However, despite projections that world urban populations will increase to nearly 5 billion by 2030, little is known about future locations, magnitudes, and rates of urban expansion. Here we develop spatially explicit probabilistic forecasts of global urban land-cover change and explore the direct impacts on biodiversity hotspots and tropical carbon biomass.

Impacts of conservation buffers and grasslands on total phosphorus loads using hydrological modeling and remote sensing techniques

Journal Articles & Books
Dezembro, 2011

To better assess the impacts of conservation buffers and grasslands on water quality at large spatial scales, development and integration of novel approaches are crucial to ensure that these land management practices are functioning properly and meeting their original goals. Recent developments in remote sensing technology have greatly enriched the availability of geospatial data that can be used in hydrological modeling to assess the potential hydrological response of conservation practices over larger areas.

Performance of the Endemic Alpine Herb Primula scandinavica in a Changing European Mountain Landscape

Journal Articles & Books
Dezembro, 2015
Noruega

This paper reports on the performance of the red-listed Primula scandinavica, endemic to Scandinavia. The study took place in Jotunheimen, Norway. We evaluated occurrence, density and sexual reproduction variables (number of fertile individuals and number of seed capsules). Habitats were registered as land-cover categories (historical and current; broad habitat types) and habitat patch classes (semi-natural and natural; fine-grained habitat types).

Study on the diurnal change of microclimate and human comfort in five types of land covers

Journal Articles & Books
Dezembro, 2013

The role of urban parks in the microclimatic conditions of cities in summer is investigated in this paper through monitoring campaigns carried out at the Beijing Olympic forestry park. Five kinds of land cover, namely urban woods, lawn, bare concrete cover, water areas and wetlands were selected to study on the temperature, humidity and human comfort. The air temperature and relative humidity were measured once every two hours from 8:00 to 20:00 every day and continuously three days in July 2010.

Fire emissions estimates in Siberia: evaluation of uncertainties in area burned, land cover, and fuel consumption

Journal Articles & Books
Dezembro, 2012
Rússia

Boreal forests constitute the world's largest terrestrial carbon pools. The main natural disturbance in these forests is wildfire, which modifies the carbon budget and atmosphere, directly and indirectly. Wildfire emissions in Russia contribute substantially to the global carbon cycle and have potentially important feedbacks to changing climate. Published estimates of carbon emissions from fires in Russian boreal forests vary greatly depending on the methods and data sets used. We examined various fire and vegetation products used to estimate wildfire emissions for Siberia.

Use patterns of natural resources supporting livelihoods of smallholder communities and implications for climate change adaptation in Zimbabwe

Journal Articles & Books
Dezembro, 2016
Zimbabwe

Declining crop and livestock production due to a degrading land resource base and changing climate among other biophysical and socio-economic constraints, is increasingly forcing rural households in Zimbabwe and other parts of Southern Africa to rely on common natural resource pools (CNRPs) to supplement their household food and income.