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Issuesutilisation des terresLandLibrary Resource
There are 9, 801 content items of different types and languages related to utilisation des terres on the Land Portal.
Displaying 1681 - 1692 of 4598

Influence of land use/land cover (LULC) changes on atmospheric dynamics over the arid region of Rajasthan state, India

Journal Articles & Books
Décembre, 2013
Inde

The present study examines the long-term effects of land use/land cover (LULC) changes in Rajasthan state, India on land-atmosphere fluxes and, possibly in precipitation and aerosol loading. By comparing the satellite observations from Landsat MSS (1972–73) and IRS-P6 AWiFS (2006–07) considerable LULC changes are observed, an increase in crop-land and vegetated areas of ∼57% in the eastern and ∼68% in the western Rajasthan.

Corine Land Use System, case study; Çanakkale province

Policy Papers & Briefs
Décembre, 2009
Turquie

Using remote sensing and geographical information system (GIS), the detection of land cover/landuse (LC/LU) spaceies and monitoring changes in particular periods are made easily and economically. CORINE classification was developed in 1985 by countries of the Europeon Union to establish a good harmony especialy with LC/LU classification. This system contains three levels of classification. So far, LC/LU classification has not been fullfilled using large scale CORINE classification in Turkey,.

Temporal stability of vegetation indicators of wetland condition

Journal Articles & Books
Décembre, 2013

Vegetation indices are widely employed to evaluate wetland ecological condition, and are expected to provide sensitive and specific detection of environmental change. Most studies evaluate the performance of condition assessment metrics in the context of the data used to calibrate them. Here we examined the temporal stability of the Florida Wetland Condition Index (FWCI) for vegetation of depressional forested wetlands by resampling sites in 2008 that were previously sampled to develop the FWCI in 2001.

Cost of energy and mutual shadows in a two-axis tracking PV system

Journal Articles & Books
Décembre, 2012

The performance improvement obtained from the use of trackers in a PV system cannot be separated from the higher requirement of land due to the mutual shadows between generators. Thus, the optimal choice of distances between trackers is a compromise between productivity and land use to minimize the cost of the energy produced by the PV system during its lifetime. This paper develops a method for the estimation and optimization of the cost of energy function.

Impact of land use intensity on sandy desertification: An evidence from Horqin Sandy Land, China

Journal Articles & Books
Décembre, 2016
Chine

It has been widely accepted that high land use intensity contributes to sandy desertification in Northern China. However, it is surprising that it is even not easy to find an explicit definition and proper indicator for the term “land use intensity” in the sandy desertification related literatures.

Modern non-pollen palynomorphs from East African lake sediments

Journal Articles & Books
Décembre, 2011
Ouganda
Afrique

This paper presents an illustrated guide to the identification of non-pollen palynomorphs (NPPs) preserved in lake-sediment archives from equatorial East Africa. Modern NPPs were recovered from recently deposited surface sediment in 20 small crater lakes in western Uganda, located along environmental gradients of vegetation (moist evergreen and semi-deciduous forest, wooded and open grass savannah), land use (pastoralism, crop agriculture, plantations) and lake characteristics (basin morphometry, water chemistry and aquatic production).

Information and Auction Performance: A Laboratory Study of Conservation Auctions for Spatially Contiguous Land Management

Journal Articles & Books
Décembre, 2015

Conservation auctions are used by public agencies to procure environmental friendly land uses from private landowners. We present the structure of an iterative conservation auction that ranks bids according to a scoring rule intended to procure spatially adjacent conservation land use projects. Laboratory experiments are conducted to compare the performance of this auction under two information conditions. Under one condition subjects have knowledge about the spatial goal implemented by the scoring rule and in the other case they don’t.

ES4LUCC: A GIS-tool for remotely monitoring landscape dynamics

Journal Articles & Books
Décembre, 2012
Italie

Given the potential impacts of land cover changes on surface processes, accurate mapping of landscape dynamics is a crucial task in environmental monitoring. The use of commercial software for remote sensing of landscape changes requires appropriate expertise in sensor technology and computing resources that are not always available to decision makers. This paper presents the development of an experimental prototype of a lightweight and user-friendly GIS tool – ES4LUCC – a semiautomatic software for change detection and classification of land use/cover.

Future land-use change in the Netherlands: an analysis based on a chain of models

Journal Articles & Books
Décembre, 2006
Pays-Bas

Analyses of the impact of European policies on agricultural change are most often based on agricultural sector models. Such models have their limitations: they cannot specify the interaction between agriculture and the rest of the economy, and their spatial dimension is usually limited. Land use simulation models, on the other hand, usually depend on other models for assessing the demand for land. The consistency of those models with the assumptions and databases of the land use model is often not examined.

The impact of large-lot zoning and open space acquisition on home building in rural communities

Conference Papers & Reports
Décembre, 2009
États-Unis d'Amérique

Local governments in the United States use a wide range of tools to preserve rural landscapes. Some of these tools, like the purchase or transfer of development rights, are generally welcomed by farmers and other large landowners. Other tools, like increasing the minimum lot size in a town’s agricultural zone, are more controversial because they are believed to have negative effects on landowner wealth.

Effect of catchment properties on runoff coefficient in a karst area of southwest China

Journal Articles & Books
Décembre, 2014
Chine

Frequent human activities and climate change in the karst region of southwest China since the 1950s have led to the investigation of response of runoff to climate and catchment properties. Runoff coefficient (Rc) as an expression variable of the catchment response to rainfall is important to describe runoff dynamics and to estimate available streamflow for utilization. In this study, the equations of Rc associated with its attributors of climate condition and catchment property were derived using the Budyko framework.

Identification of hydrologic and geochemical pathways using high frequency sampling, REE aqueous sampling and soil characterization at Koiliaris Critical Zone Observatory, Crete

Journal Articles & Books
Décembre, 2011

Koiliaris River watershed is a Critical Zone Observatory that represents severely degraded soils due to intensive agricultural activities and biophysical factors. It has typical Mediterranean soils under the imminent threat of desertification which is expected to intensify due to projected climate change. High frequency hydro-chemical monitoring with targeted sampling for Rare Earth Elements (REE) analysis of different water bodies and geochemical characterization of soils were used for the identification of hydrologic and geochemical pathways.