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 1225 - 1236 of 4598

Comparative Study of Built-up Index Approaches for Automated Extraction of Built-up Regions From Remote Sensing Data

Journal Articles & Books
Décembre, 2014

Accurate built-up information is imperative for loss estimation and disaster management after the occurrence of catastrophic events such as earthquake, tornado, tsunami and flood. These catastrophic events leave behind a trail of mass destruction with property and human losses amounting to millions. Once a natural disaster hits a region, built-up information is required within a short span of time for disaster management. Nowadays, earth observation satellite imagery serves as a promising source to extract the land use / land cover classes.

Projected surface radiative forcing due to 2000–2050 land-cover land-use albedo change over the eastern United States

Journal Articles & Books
Décembre, 2013
États-Unis d'Amérique

Satellite-derived contemporary land-cover land-use (LCLU) and albedo data and modeled future LCLU are used to study the impact of LCLU change from 2000 to 2050 on surface albedo and radiative forcing for 19 ecoregions in the eastern United States. The modeled 2000–2050 LCLU changes indicate a future decrease in both agriculture and forested land and an increase in developed land that induces ecoregion radiative forcings ranging from −0.175 to 0.432 W m⁻² driven predominately by differences in the area and type of LCLU change.

Forecasting the environmental and socio-economic consequences of changes in the Common Agricultural Policy

Journal Articles & Books
Décembre, 2003

A framework is described that has been used to assess the effect of the European Commission's Agenda 2000 proposal on the Dumfries and Galloway region, Scotland. The model assesses the impact of agriculture on land-use patterns, the environment and socio-economics of the region. It incorporates a farm-type linear programming sub-model with environmental and socio-economic sub-models.

Impact of loess relief on land use mosaic in SE Poland

Journal Articles & Books
Décembre, 2012

Land cover is one of the most changeable environment components in time and space. The type, intensity and spatial distribution of land use forms result directly from the actual and former character of agriculture. In this study, an attempt was made to assess the impact of loess relief on the spatial diversity of land use patch features. The research was carried out within three test areas covering a total of about 100km². The test areas are located within the loess areas of SE Poland. Spatial analyses were carried out using GIS software.

Can reforested and plantation habitats effectively conserve SW China’s ant biodiversity?

Journal Articles & Books
Décembre, 2016
Chine

China has a long history of deforestation and environmental degradation. Because China is also lacking biological reserves, off-reserve conservation is a major contributor to its conservation efforts. Off-reserve conservation in China is primarily being achieved within afforestation and low-intensity agriculture. We compare ant diversity of three habitats: Natural Forest, Disturbed Forest and Plantation, to assess the conservation potential of these multiple land uses.

Agriculture Land Suitability Evaluator (ALSE): A decision and planning support tool for tropical and subtropical crops

Journal Articles & Books
Décembre, 2013

Agricultural land suitability evaluation for crop production is a process that requires specialized geo-environmental information and the expertise of a computer scientist to analyze and interpret the information. This paper presents ALSE, an intelligent system for assessing land suitability for different types of crops in tropical and subtropical regions (e.g. mango, banana, papaya, citrus, and guava) based on geo-environmental factors that automates the process of evaluation and illustrates the results on an attribute table.

Fractal characterization of soil particle-size distribution under different land-use patterns in the Yellow River Delta Wetland in China

Journal Articles & Books
Décembre, 2014
Chine

PURPOSE: Soil particle-size distribution (PSD) is an important soil physical property. Single- and multi-fractal models are increasingly used to characterize soil properties and may provide additional information. The Yellow River Delta is one of the best representative examples of river ecosystem wetlands in the world. In this area, different land resource development patterns strongly influence soil structure and fertility.

Crop and water productivity, profitability and energy consumption pattern of a maize-based crop sequence in the North Eastern Himalayan Region, India

Journal Articles & Books
Décembre, 2013
Inde

Mono-cropping is the most common farming practice followed in the North Eastern Hilly Region (NEHR) of India and farmers leave the land fallow after harvesting the main crop. The identification of suitable sequential crops is essential to increase the cropping intensity, land-use efficiency and overall productivity of the land. Therefore, a study was carried out during 2008–09, 2009–10 and 2010–11 on maize (rainy season) followed by table pea, mustard, French bean and groundnut (post rainy season). Sequence crops were imposed with paddy straw mulch at 5.0 t ha⁻¹ and without mulch.

Driving forces responsible for aeolian desertification in the source region of the Yangtze River from 1975 to 2005

Journal Articles & Books
Décembre, 2012
Chine

The Yangtze River is the China’s longest river and the third-longest river in the world. The river’s source region in the Qinghai-Tibet Plateau is especially sensitive to global environmental change because of its high elevation and cold environment. Under the influence of global warming, aeolian desertified land has expanded rapidly in this area. To assess the trends in aeolian desertification from 1975 to 2005, remote-sensing and GIS technology were used to monitor the extent of aeolian desertification in 1975, 1990, 2000, and 2005.

Multivariate Clustering Approach for Characterization of the Montepulciano d’Abruzzo Colline Teramane Area

Journal Articles & Books
Décembre, 2011
Italie

A multivariate clustering approach combined with geomatics was applied to delineate and define homogeneous zones (terroir units) within the premium Denomination of Guaranteed Origin Colline Teramane winegrowing area, in the Teramo Province, Italy. A geographical information system (GIS) architecture was set up to incorporate the main factors affecting the geographical differentiation of land capability. Vine-related environmental indices and parameters were interpolated and incorporated in the GIS.

CN-Idris: An Idrisi tool for generating curve number maps and estimating direct runoff

Journal Articles & Books
Décembre, 2011

This article presents a raster-based Geographic Information Systems (GIS) tool called CN-Idris that outputs runoff estimates from land use/land cover and hydrologic soil group maps based on the Natural Resources Conservation Service Curve Number method. The tool enables the user to select among three antecedent moisture conditions and two values of the initial abstraction (Iₐ) parameter, and it has the option to include spatial variation in rainfall input.

Road impacts on spatial patterns of land use and landscape fragmentation in three parallel rivers region, Yunnan Province, China

Journal Articles & Books
Décembre, 2014
Chine

The structure and function of network is a central issue in landscape ecology. Road networks with hierarchical structure are crucial for understanding landscape dynamics. In this study, we compared the distribution of national road, provincial road, county road and rural road in the Three Parallel Rivers Region (TPRR) in Yunnan Province of China, and estimated the effect of roads (and other factors) on the spatial patterns of land use and land cover with logistic regression.