Passar para o conteúdo principal

page search

IssuesdesflorestaçãoLandLibrary Resource
There are 3, 056 content items of different types and languages related to desflorestação on the Land Portal.

desflorestação

AGROVOC URI:

Displaying 649 - 660 of 1177

Land cover changes in the Lachuá region, Guatemala: patterns, proximate causes, and underlying driving forces over the last 50� years

Journal Articles & Books
Dezembro, 2014
Guatemala

Identifying the patterns of land cover change (LCC) and their main proximate causes and underlying driving forces in tropical rainforests is an urgent task for designing adequate management and conservation policies. The Lachuá region maintains the largest lowland rainforest remnant in Guatemala, but it has been highly deforested and fragmented during the last decades. This is the first paper to describe the patterns of LCC and the associated political and socioeconomic factors in the region over the last 50� years.

Calculation on the impacts of forestation, afforestation and reforestation on the C-sequestration potential in Belgian forests ecosystems. COST E21 Workshop. Contribution of forests and forestry to mitigate greenhouse effects. Joensuu (Finland). 28-30 ...

Journal Articles & Books
Dezembro, 2000
Finlândia
Bélgica
Europa

The Belgian climate policy is formulated at the federal level, requiring cooperation between regional and federal administrations. Around a fifth of the total area of Belgium is covered by forests. Around 80/ of the productive forests are in the Walloon region. Reported values for land use change and forestry categories give a potential of 2,057 kt eq. CO2 per year. Given the existing regional forest inventories (RFI): RFI1 for 1984 and RFI2 for 1999, an estimate has been made to consolidate reported data.

Increasing tree cover while losing diverse natural forests in tropical Hainan, China

Journal Articles & Books
Dezembro, 2014
China

To protect biodiversity and improve environmental conditions, China has invested billions of dollars in reforestation and payments for ecosystem service programs. Here, we examine the Sloping Land Conversion Program, the largest such program in the world and found that after 13� years of implementation at our study site, it has had negative impacts on natural tropical forests. GIS and remote sensing techniques revealed that both natural forests and natural shrub and grasslands were replaced by non-native monocultural plantations on Hainan Island, China, a key tropical biodiversity hotspot.

Testing the robustness of the physically-based ECOMAG model with respect to changing conditions

Journal Articles & Books
Dezembro, 2015
França
Suécia

The robustness of the physically-based, semi-distributed hydrological model ECOMAG with respect to changing (climatic or land-use) conditions was evaluated for two basins, considered within the modelling workshop held in the frame of the 2013 IAHS conference in Göteborg, Sweden. The first basin, the Garonne River basin, France, is characterized mostly by changes in climatic conditions, while the second, Obyån Creek, Sweden, was exposed to drastic land cover change due to deforestation.

Diversifying Incomes and Losing Landscape Complexity in Quilombola Shifting Cultivation Communities of the Atlantic Rainforest (Brazil)

Journal Articles & Books
Dezembro, 2013
Brasil

Shifting cultivation systems have been blamed as the primary cause of tropical deforestation and are being transformed through various forms of conservation and development policies and through the emergence of new markets for cash crops. Here, we analyze the outcomes of different policies on land use/land cover change (LUCC) in a traditional, shifting cultivation landscape in the Atlantic Forest (Brazil), one of the world’s top biodiversity hotspots.

Spatial and temporal analysis of vegetation change in agricultural landscapes: A case study of two brigalow (Acacia harpophylla) landscapes in Queensland, Australia

Journal Articles & Books
Dezembro, 2007
Austrália

The majority of landscapes around the world have been modified or transformed by human activities to meet the needs of human societies. The loss of native vegetation for agricultural development affects the sustainability of growing proportion of the world's ecosystems. Factors such as land tenure, roads and agricultural intensification, together with biophysical properties, have been cited as drivers of deforestation.

Impacts of land cover change scenarios on storm runoff generation: a basis for management of the nyando basin, kenya

Journal Articles & Books
Dezembro, 2014

The effects of conceptual land cover change scenarios on the generation of storm runoffs were evaluated in the Nyando Basin. The spatial scenarios represented alternatives that vary between full deforestation and reforestation. Synthetic storm events of depths 40, 60 and 80 mm were formulated according to the rainfall patterns and assumed to have durations corresponding to the runoff times of concentration.

Payments for ecosystem services in Amazonia. The challenge of land use heterogeneity in agricultural frontiers near Cruzeiro do Sul (Acre,Brazil)

Journal Articles & Books
Dezembro, 2012
Brasil

Amazonia became a target area for Payment for Ecosystem Services (PES) initiatives in deforestation. We analysed the implementation of a PES scheme in Acre (Brazil) by taking into account land use heterogeneity in an agricultural frontier. Justified by the modernisation of deforestation control policies, the programme promotes agricultural intensification through fire-free practices. In this way, the PES tends to focus on long-established settlements, where farmers are wealthier and the landscape is dominated by pasture. Agricultural intensification may be adapted to foster reforestation.

Land use and climate changes and their impacts on runoff in the yarlung zangbo river basin, china

Journal Articles & Books
Dezembro, 2014
China

Impacts of land use and climate change on runoff were investigated by studying the runoff in the Yarlung Zangbo River basin, China. Trends in precipitation, mean air temperature, and runoff were analysed by non‐parametric Mann‐Kendall tests. Land‐use changes were examined with land‐use transition matrix and geographic information system tools. Land‐use and climate changes showed several characteristics, including increased reforestation, decreased grassland, retreat of glaciers and increased desertification.

novel application of satellite radar data: measuring carbon sequestration and detecting degradation in a community forestry project in Mozambique

Journal Articles & Books
Dezembro, 2013
Moçambique

Background: It is essential that systems for measuring changes in carbon stocks for Reducing Emissions from Deforestation and Forest Degradation (REDD) projects are accurate, reliable and low cost.