Aller au contenu principal

page search

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 865 - 876 of 4598

Comparison between reconstructions of global anthropogenic land cover change over past two millennia

Journal Articles & Books
Décembre, 2013
Suisse
Allemagne

Three global datasets, the History Database of the Global Environment (HYDE), Kaplan and Krumhardt (KK) and Pongratz of reconstructed anthropogenic land cover change (ALCC) were introduced and compared in this paper. The HYDE dataset was reconstructed by Goldewijk and his colleagues at the National Institute of Public Health and the Environment in Netherland, covering the past 12 000 years. The KK dataset was reconstructed by Kaplan and his colleagues, the Soil-Vegetation-Atmosphere Research Group at the Institute of Environmental Engineering in Switzerland, covering the past 8000 years.

Saving land to feed a growing population: consequences for consumption of crop and livestock products

Journal Articles & Books
Décembre, 2016
Pays-Bas

PURPOSE: The expected increase in demand for food raises concerns about the expansion of agricultural land worldwide. To avoid expansion, we need to focus on increasing land productivity, reducing waste, and shifting human diets. Studies exploring diet shifts so far have ignored competition for land between humans and animals. Our objective was to study the relation between land use, the share of animal protein in the human diet, population size, and land availability and quality.

Drainage and agriculture impacts on fire frequency in a southern Illinois forested bottomland

Journal Articles & Books
Décembre, 2008
États-Unis d'Amérique

Postsettlement (1909-2003) fire history of a forested bottomland in the Mississippi Embayment of southern Illinois, USA, was determined using fire-scar analysis. The study area is a forested bottomland hardwood site, with remnant pockets of the dominant presettlement bald cypress - tupelo (Taxodium-Nyssa) vegetation. Ditch drainage was installed in 1919, with agricultural clearing and abandonment varying throughout the early and mid-twentieth century. Commercial agricultural activities ceased after the site became part of a conservation area ca. 1950.

Across the grain: Multi-scale map comparison and land change assessment

Journal Articles & Books
Décembre, 2016

Changes in the spatial distribution of land cover and land use can have significant impacts on ecological processes at multiple scales; estimating these changes provides critical data for both monitoring and understanding land-use effects on these processes. One approach to mapping landcover changes, particularly useful over longer periods of time, is comparison of existing landcover maps, (post-classification change analysis).

Future European agricultural landscapes--What can we learn from existing quantitative land use scenario studies

Journal Articles & Books
Décembre, 2006
Suisse
Norvège
Europe

The structure of agricultural production and spatial patterns of agricultural land use in Europe are expected to face major changes over the next decades due to changes in global trade, technology, demography and policies. This paper presents a set of 25 scenarios comprising information on quantitative land use changes in Europe. The scenarios have been selected from studies with different foci, operating on both different spatial scales and different time horizons.

Woodland restoration in Scotland: Ecology, history, culture, economics, politics and change

Journal Articles & Books
Décembre, 2009

In the latter half of the 20th century, native pine woodlands in Scotland were restricted to small remnant areas within which there was little regeneration. These woodlands are important from a conservation perspective and are habitat for numerous species of conservation concern. Recent developments have seen a large increase in interest in woodland restoration and a dramatic increase in regeneration and woodland spread. The proximate factor enabling this regeneration is a reduction in grazing pressure from sheep and, particularly, deer.

vulnerability of ecosystem services to land use change

Journal Articles & Books
Décembre, 2006
Europe

Terrestrial ecosystems provide a number of vital services for people and society, such as biodiversity, food, fibre, water resources, carbon sequestration, and recreation. The future capability of ecosystems to provide these services is determined by changes in socio-economic characteristics, land use, biodiversity, atmospheric composition and climate. Most published impact assessments do not address the vulnerability of the human-environment system under such environmental change.

Borders without barriers – Structural functionality and green infrastructure in the Austrian–Hungarian transboundary region of Lake Neusiedl

Journal Articles & Books
Décembre, 2013

Many ongoing processes in today's landscapes impact our environment considerably. Thus, it is enormously important to gather information on qualitative characteristics of our landscapes in order to effectively counteract the negative developments. Structural functionality as proxy for the assessment of habitat quality and species patterns has already proven potential to successfully describe ecological values.

Urban land uses with respect to ecology: A case study for Çanakkale city centre

Policy Papers & Briefs
Décembre, 2011
Turquie

This investigation was conducted for both constituting an urban land use planning and criticizing the appropriateness of the uses with respect to ecology by taking into consideration the ecological factors in the centre and the periphery of Çanakkale city. A method based on "Maximum Values Map Approximation Method" was used in this present study. A suggested land use map of the study area was constructed for these usage types according to the arrangements of their priorities by the experts.

Impacts of land-use change on biodiversity: An assessment of agricultural biodiversity in the European Union

Journal Articles & Books
Décembre, 2006
Pays-Bas
France
Grèce
Espagne
Global

The objective of this study is to assess land-use intensity and the related biodiversity in agricultural landscapes of the EU25 for the current situation (2000), and explore future trends, based on the four EURURALIS scenarios up to 2030. Data from the Farm Accountancy Data Network (FADN) were used to classify farm types in 100 regions of the EU15, according to agricultural intensity. For the ten New Member States (EU10), which are not yet considered by the FADN, country level data were used to obtain similar farm types.

Mountain vegetation change quantification using surface landscape metrics in Lancang watershed, China

Journal Articles & Books
Décembre, 2013
Chine

Land cover and vegetation change are among the most important aspects of environmental change. Vegetation change can be quantified by landscape pattern indices (LPI). Landscape indices are routinely calculated using planar land use/land cover (LU/LC) maps, obtained by the projection of a non-flat landscape surface into a two-dimensional Cartesian space. Especially in mountainous areas, quantification on planar maps can lead to underestimation of vegetation and land cover changes. Hoechstetter et al.