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IssuesOrdenación de tierrasLandLibrary Resource
There are 8, 235 content items of different types and languages related to Ordenación de tierras on the Land Portal.
Displaying 3481 - 3492 of 5231

satellite analysis of contrasting fire patterns in Aboriginal- and Euro-Australian lands in tropical North Australia

Journal Articles & Books
Diciembre, 2007
Australia

We use satellite imagery to compare and contrast fire patterns across a repeating mosaic of vegetation types occurring within the tropical savanna of the Northern Territory, Australia. Our study area included different land management settings that encapsulate three contrasting styles of management that have developed following European settlement in northern Australia: Decentralized fire management carried out by small Aboriginal communities widely dispersed across a large landscape.

Understanding landscape patterns of temporal variability in avian populations to improve environmental impact assessments

Journal Articles & Books
Diciembre, 2013

It is recognized that wildlife populations exhibit spatial and temporal variability in patterns of species richness across heterogeneous landscapes. This phenomenon can prove problematic for environmental practitioners when attempting to complete comprehensive environmental assessments (EAs) with limited field surveys. A better understanding of regional spatio-temporal patterns in population dynamics should enhance site-level decision-making.

Influence of Vertical and Horizontal Habitat Structure on Nationwide Patterns of Avian Biodiversity

Journal Articles & Books
Diciembre, 2013
Estados Unidos de América

With limited resources for habitat conservation, the accurate identification of high-value avian habitat is crucial. Habitat structure affects avian biodiversity but is difficult to quantify over broad extents. Our goal was to identify which measures of vertical and horizontal habitat structure are most strongly related to patterns of avian biodiversity across the conterminous United States and to determine whether new measures of vertical structure are complementary to existing, primarily horizontal, measures.

Automated integration of lidar into the LANDFIRE product suite

Journal Articles & Books
Diciembre, 2015

Accurate information about three-dimensional canopy structure and wildland fuel across the landscape is necessary for fire behaviour modelling system predictions. Remotely sensed data are invaluable for assessing these canopy characteristics over large areas; lidar data, in particular, are uniquely suited for quantifying three-dimensional canopy structure. Although lidar data are increasingly available, they have rarely been applied to wildland fuels mapping efforts, mostly due to two issues.

Organic farming and heterogeneous landscapes positively affect different measures of plant diversity

Journal Articles & Books
Diciembre, 2014
Suecia

Increasing landscape heterogeneity and organic farming practices are known to enhance species richness in agroecosystems. However, little is known about the consequences of these management options on other biodiversity components such as community composition, phylogenetic structure and functional diversity which may be more closely linked to ecosystem functioning. We surveyed semi‐natural plant communities within the uncultivated field margins of 18 arable farms in Skåne, south Sweden.

Delineation and functional status monitoring in small saline wetlands of NE Spain

Journal Articles & Books
Diciembre, 2009

The small playa-lakes and other saline wetlands of Monegros, scattered over a dry area with winter cereal monoculture, are threatened by the settlement of new irrigation districts and other kinds of human pressure. Enforcing the protection rules of European Union in these valuable habitats requires, first, their delimitation and monitoring. This article shows how these tasks can be undertaken using remote sensing in conjunction with field observations.

Labile nitrogen, carbon, and phosphorus pools and nitrogen mineralization and immobilization rates at low temperatures in seasonally snow-covered soils

Journal Articles & Books
Diciembre, 2007

Surface mineral horizons from four ecosystems sampled in the northwestern Italian Alps were incubated at -3 and +3°C to simulate subnivial and early thaw period temperatures for a seasonally snow-covered area. The soil profiles at these sites represent extreme examples of management, grazed meadow (site M) and extensive grazing beneath larch (site L) or naturally disturbed by avalanche and colonized by alder (site A) and the expected forest climax vegetation beneath fir (site F).

Linkages between land management activities and stream water quality in a border dyke-irrigated pastoral catchment

Journal Articles & Books
Diciembre, 2009
Nueva Zelandia

This paper describes key linkages between land management activities and stream water quality for a 5230ha catchment used for intensive pastoral agriculture in southern New Zealand. Due to low annual rainfall and the wide coverage of soils with low available water-holding capacities, flood irrigation of the 2400ha of flat land within the catchment is an important feature impacting on farm business profitability and stream health. Water quality variables and nutrient and sediment yield estimates are reported for a four-year period.

Diffusion of voluntary protection among family forest owners: Decision process and success factors

Journal Articles & Books
Diciembre, 2013
Finlandia

The ongoing forest biodiversity protection programme in Finland (METSO) relies on voluntary participation of family forest owners. Even though the programme has gained wide acceptability among owners, compared to traditional conservation such as land acquisition, more owners need to be engaged. In this study, we examined how the new protection measures have diffused among forest owners. This analysis will help find means to promote the protection among owners who could but have not yet participated. The theoretical background is innovation diffusion.

Method For Landscape-Scale Vegetation Assessment: Application to Great Basin Rangeland Ecosystems

Journal Articles & Books
Diciembre, 2007
Estados Unidos de América

The growth of landscape-scale land management necessitates the development of methods for large-scale vegetation assessment. Field data collection and analysis methods used to assess ecological condition for the 47165-h North Spring Valley watershed are presented. Vegetation cover data were collected in a stratified random design within 6 Great Basin vegetation types, and the probability of detecting change in native herbaceous cover was calculated using power analyses.