utilisation des terres
AGROVOC URI:
Parcel-based geo-information systems : concepts and guidelines
Plant-livestock-soil-hydrology interactions in the northeastern region of India
In a multidisciplinary study, highly significant interactional effects were found among land use, livestock component, soil properties and rainfall. On an average, 16.2 to 82.2 tonnes of sediment yield kmâ2 and more than 90% of rainwater was retained in-situ in new land use systems as against 3621.3 tonnes of sediment and 66.3% rainwater retention in shifting cultivation, because of poor land cover. Good vegetation cover reduced the runoff load, resulting in significant reduction in the soil and nutrient erosion.
Resolving large‐scale pressures on species and ecosystems: propensity modelling identifies agricultural effects on streams
Although agriculture is amongst the world's most widespread land uses, studies of its effects on stream ecosystems are often limited in spatial extent. National monitoring data could extend spatial coverage and increase statistical power, but present analytical challenges where covarying environmental variables confound relationships of interest. Propensity modelling is used widely outside ecology to control for confounding variables in observational data.
Development of a Watershed‐Based Geospatial Groundwater Specific Vulnerability Assessment Tool
This study assesses and characterizes the vulnerability of unregulated groundwater systems to microbial contamination in 18 counties in the state of Georgia using a contamination risk screening strategy based on watershed characteristics and elements of the Safe Drinking Water Act's Wellhead Protection program. Environmental data sources analyzed include septic systems, elevation, land use and land cover data, soil, vegetation coverage, demographics, and livestock.
Satellite Data Classification Using Open Source Support
In this study we explored the potential of open source data mining software support to classify freely available Landsat image. The study identified several major classes that can be distinguished using Landsat data of 30 m spatial resolution.
Community’s forest dependency and its effects towards the forest resources and wildlife abundances in Sarawak, Malaysia
Forests play an important role in the community’s livelihood, and this role has created an important relationship or mutual dependence between the forest and the community. Therefore, this study was conducted to identify the types of community’s forest dependency and to identify the effects of community’s forest dependency towards forest resources and wildlife abundance. The data were collected using the self-administered questionnaire, involving 204 community members in Bau District, Sarawak.
Sustainable agricultural residue removal for bioenergy: A spatially comprehensive US national assessment
This study provides a spatially comprehensive assessment of sustainable agricultural residue removal potential across the United States for bioenergy production. Earlier assessments determining the quantity of agricultural residue that could be sustainably removed for bioenergy production at the regional and national scale faced a number of computational limitations. These limitations included the number of environmental factors, the number of land management scenarios, and the spatial fidelity and spatial extent of the assessment.
Methodical approaches to the improvement of the use of lands and organization of the territory of agricultural organizations in conditions of ecologization of land use
In the conditions of the Republic of Belarus there were presented theoretical statements and methodical approaches to the improvement of the use of lands and organization of the territory of agricultural organizations in conditions of ecologization of land use. There were formulated the notion and tasks of improvement of the use of lands of agricultural organizations.
Finding Homogeneity in Heterogeneity--A New Approach to Quantifying Landscape Mosaics Developed for the Lao PDR
A key challenge for land change science in general and research on swidden agriculture in particular, is linking land cover information to human-environment interactions over larger spatial areas. In Lao PDR, a country facing rapid and multi-level land change processes, this hinders informed policy- and decision-making. Crucial information on land use types and people involved is still lacking. This article proposes an alternative approach for the description of landscape mosaics.
Spatial decision support system for assessing lake pollution hazard: southeastern pampean shallow lakes (Argentina) as a case study
This study gives an account of the implementation of a decision support system as a logical framework for assessing lake pollution hazard. The use of this system is demonstrated with an example from two lake watersheds, each one with different land-use, soil and topographic characteristics and also management regulations for natural resource protection. Lake pollution hazard is assessed as a function of two primary topics: hydrologic and soil conditions.
Human impact on avian diversity in rural Mediterranean areas
Human activities influence the biodiversity of Mediterranean ecosystems and are involved in the transformation of natural habitats into farmland. We surveyed birds using the point count method on 288 plots at a 50-m radius in three altitudinal landscapes with different rural character in spring and autumn. The results showed that bird species richness in the study area was high (74 species). High total species richness was found in the upland rural landscape characterized by mixed land use and high landscape diversity.