Search results for " land"

La valeur économique des paysages des villes périurbanisées

2007

La recherche présentée ici propose une méthode de description et d’évaluation des caractéristiques d’un paysage qui combine la géographie quantitative et l’économétrie des modèles hédoniques. Un modèle géographique produit des indices caractérisant les paysages à partir d’une reconstitution de la vue depuis le sol, en tenant compte des effets du relief et des masques que les objets hauts opposent à la vue. Il décrit la quantité de paysage vu par un observateur au niveau du sol en la répartissant entre 13 types d’occupations du sol. Les variables produites par le modèle géographique sont utilisées dans des régressions hédoniques qui permettent d’évaluer l’impact des attributs paysagers ain…

La gestione del demanio marittimo nella evoluzione del paesaggio costiero

2017

Le linee di costa sono da sempre il luogo fisico a maggiore gradiente di immaterialità, a più alta densità di valore esperienziale, a più elevata tensione localizzativa. Con specifico riferimento all’uso dei litorali, alla loro conservazione e valorizzazione, all’accesso a essi, in quanto commons e heritage-goods, l’articolo avanza alcune considerazioni generali che richiamano temi di pianificazione ampi e profonde questioni valutative. Lo studio proposto intende indicare alcune componenti strutturali (in senso paesaggistico), caratteristiche salienti (in senso assiologico) e potenzialità (in senso progettuale) del patrimonio costiero. Il lavoro prende spunto dall’osservazione di alcuni cas…

Innovative and Applied Research in Biology: Proceedings, Vol. 2

2020

The collection contains SCIENTIFIC articles on the topics of the LU 78 conference reports. The main focus is on innovative and applied research in biology and interdisciplinary fields.

Culture in sustainability : towards a transdisciplinary approach

2017

1 INTRODUCTION, 5, Ljiljana Rogač Mijatović, Katriina Soini, Katarzyna Plebańczyk, Sari Asikainen PART 1: CONCEPTS 2 ENCHANTING SUSTAINABILITY: From enlightened modernity towards embodiment and planetary consciousness, 9, Hans Dieleman 3 CULTURE AND THE SOCIAL LEARNING PROCESS TOWARDS SUSTAINABILITY, 21, Philippe Vandenbroeck 4 UNDERSTANDING CULTURAL SUSTAINABILITY: Connecting sustainability and culture, 28, Nathalie Nunes, Hanna Söderström and Sandra Hipke PART 2: POLICIES AND PRACTICES 5 CULTURAL PROJECTS, PUBLIC PARTICIPATION, AND SMALL CITY SUSTAINABILITY, 45, Isabel Ferreira and Nancy Duxbury 6 HISTORIC URBAN LANDSCAPE APPROACH AS A TOOL FOR SUSTAINABLE URBAN HERITAGE MANAGEMENT, 61, …

I suoli di una toposequenza collinare e la loro adattabilità alla produzione di uva nell’Azienda Feudo Arancio (Sambuca di Sicilia-Agrigento)

2008

Derivation of critical rainfall thresholds for landslide in Sicily

2015

Rainfall is the primary trigger of shallow landslides that can cause fatalities, damage to properties and economic losses in many areas of the world. For this reason, determining the rainfall amount/intensity responsible for landslide occurrence is important, and may contribute to mitigate the related risk and save lives. Efforts have been made in different countries to investigate triggering conditions in order to define landslide-triggering rainfall thresholds. The rainfall thresholds are generally described by a functional relationship of power in terms of cumulated or intensity event rainfall-duration, whose parameters are estimated empirically from the analysis of historical rainfall e…

A physically-based and distributed tool for modeling the hydrological and mechanical processes of shallow landslides

2015

This work presents the capabilities of a model, i.e. the tRIBS-VEGGIE-Landslide, in two different versions, i.e. developed within a probabilistic framework and coupled with a root cohesion module. The probabilistic model treats geotechnical and soil retention curve parameters as random variables across the basin and estimates theoretical probability distributions of slope stability and the associated “factor of safety” commonly used to describe the occurrence of shallow landslides. The derived distributions are used to obtain the spatiotemporal dynamics of probability of failure, conditioned on soil moisture dynamics at each watershed location. The framework has been tested in the Luquillo …

DEM-resolution control on rainfall-triggered landslide modeling within a triangulated network-based model

2019

Catchment slope distribution significantly controls rainfall-triggered landslide modeling, in both direct and indirect ways. Slope directly determines the soil volume associated with instability. Indirectly, it affects the subsurface lateral redistribution of soil moisture across the basin, which in turn determines the water pore pressure conditions that impact slope stability. It is thus clear that the accuracy in reproducing slope distribution may be crucial in slope stability analysis. The resolution of the Digital Elevation Model (DEM) regulates the description of the topography. The correlation between raster resolution and landslide model outputs has been investigated in the literatur…

Global Estimation of Biophysical Variables from Google Earth Engine Platform

2018

This paper proposes a processing chain for the derivation of global Leaf Area Index (LAI), Fraction of Absorbed Photosynthetically Active Radiation (FAPAR), Fraction Vegetation Cover (FVC), and Canopy water content (CWC) maps from 15-years of MODIS data exploiting the capabilities of the Google Earth Engine (GEE) cloud platform. The retrieval chain is based on a hybrid method inverting the PROSAIL radiative transfer model (RTM) with Random forests (RF) regression. A major feature of this work is the implementation of a retrieval chain exploiting the GEE capabilities using global and climate data records (CDR) of both MODIS surface reflectance and LAI/FAPAR datasets allowing the global estim…

Current Social and Rangeland Access Trends among Pastoralists in the Western Algerian Steppe

2021

International audience; In the western Algerian steppe, the public authorities have carried out actions aimed at rural development (agricultural development programs) and combating desertification (grazing reserves) to counter the significant and rapid loss of vegetation cover of pastures by overgrazing, and the consequent impacts on local livelihoods. In the Rogassa area, these actions have impacted land tenure and the ancestral and collective way of land use and access. These changes have caused transformations in lifestyle and pasture management. This research aims to characterize how such changes are affecting local pastoralists and what their perceptions are about them. A selective sam…