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Integration of multi-disciplinary geospatial data for delineating agroecosystem uniform management zones

Journal Articles & Books
Décembre, 2015
Canada

Understanding agricultural ecosystems and their complex interactions with the environment is important for improving agricultural sustainability and environmental protection. Developing the necessary understanding requires approaches that integrate multi-source geospatial data and interdisciplinary relationships at different spatial scales. In order to identify and delineate landscape units representing relatively homogenous biophysical properties and eco-environmental functions at different spatial scales, a hierarchical system of uniform management zones (UMZ) is proposed.

Impact of Land Use and Land Cover Changes on Organic Carbon Stocks in Mediterranean Soils (1956–2007)

Journal Articles & Books
Décembre, 2015
Espagne

During the last few decades, land use changes have largely affected the global warming process through emissions of CO₂. However, C sequestration in terrestrial ecosystems could contribute to the decrease of atmospheric CO₂rates. Although Mediterranean areas show a high potential for C sequestration, only a few studies have been carried out in these systems. In this study, we propose a methodology to assess the impact of land use and land cover change dynamics on soil organic C stocks at different depths.

Why landscape ecologists should contribute to life cycle sustainability approaches

Journal Articles & Books
Décembre, 2015
Indonésie

CONTEXT: Understanding the consequences of changes in land use and land cover is among the greatest challenges in sustainability science, yet key themes related to land cover change are often left out of sustainability assessment tools. Because sustainability teaching is expanding at a rapid rate, incorporation of interdisciplinary, rigorous, quantitative tools to distinguish sustainable and unsustainable landscape change are needed.

Quantifying surface albedo and other direct biogeophysical climate forcings of forestry activities

Journal Articles & Books
Décembre, 2015

By altering fluxes of heat, momentum, and moisture exchanges between the land surface and atmosphere, forestry and other land‐use activities affect climate. Although long recognized scientifically as being important, these so‐called biogeophysical forcings are rarely included in climate policies for forestry and other land management projects due to the many challenges associated with their quantification.

Wolves adapt territory size, not pack size to local habitat quality

Journal Articles & Books
Décembre, 2015

Although local variation in territorial predator density is often correlated with habitat quality, the causal mechanism underlying this frequently observed association is poorly understood and could stem from facultative adjustment in either group size or territory size. To test between these alternative hypotheses, we used a novel statistical framework to construct a winter population‐level utilization distribution for wolves (Canis lupus) in northern Ontario, which we then linked to a suite of environmental variables to determine factors influencing wolf space use.

Global‐scale mapping of changes in ecosystem functioning from earth observation‐based trends in total and recurrent vegetation

Journal Articles & Books
Décembre, 2015
Afrique
Global
Amérique du Sud

AIM: To evaluate trend analysis of earth observation (EO) dense time series as a new way of describing and mapping changes in ecosystem functioning at regional to global scales. Spatio‐temporal patterns of change covering 1982–2011 are discussed in the context of changes in land use and land cover (LULCC). LOCATION: Global.

Gross changes in reconstructions of historic land cover/use for Europe between 1900 and 2010

Journal Articles & Books
Décembre, 2015
Suisse
Europe

Historic land‐cover/use change is important for studies on climate change, soil carbon, and biodiversity assessments. Available reconstructions focus on the net area difference between two time steps (net changes) instead of accounting for all area gains and losses (gross changes). This leads to a serious underestimation of land‐cover/use dynamics with impacts on the biogeochemical and environmental assessments based on these reconstructions.

Tropical Deforestation and Carbon Emissions from Protected Area Downgrading, Downsizing, and Degazettement (PADDD)

Journal Articles & Books
Décembre, 2015
Malaisie
Pérou

Protected area downgrading, downsizing and degazettement (PADDD) is a global phenomenon that has not received formal attention in Reducing Emissions from Deforestation and Forest Degradation (REDD+) policies designed to reduce forest carbon emissions and conserve biodiversity. Here, we examine how PADDD affects deforestation and forest carbon emissions. We documented 174 enacted and 8 proposed PADDD events affecting more than 48,000 km² in three REDD+ priority countries: Democratic Republic of the Congo, Malaysia, and Peru.

Have tropical deforestation's changing dynamics created conservation opportunities? A historical analysis

Journal Articles & Books
Décembre, 2015

During the past century, humans converted extensive areas of tropical forest into cultivated lands. Three distinct processes, each predominant during a different historical period, have driven the destruction of the forests. This review describes each of these deforestation dynamics: natural resource degrading poverty traps that predominated during the colonial era, new land settlement schemes that prevailed for two decades after decolonization, and finally, financialized, large enterprise dynamics that have predominated during the past quarter century.

THE TASK OF FOREST RECLAMATION LAND MANAGEMENT – TO CREATE OPTIMAL CONDITIONS FOR SUSTAINABLE FUNCTIONING OF AGRICULTUR

Journal Articles & Books
Décembre, 2015

The article deals with the theoretical aspects and the results of practical experiments Agroforestal of arrangement steppesites and had a positive impact on the preservation of fertility of chernozem soils and termination of erosion processes onplowed lands southeast CCZ

В статье рассмотрены теоретические аспекты и результаты практических экспериментовагролесомелиоративного обустройства степных участков, оказавших положительное влияние на сохранениеплодородия черноземных почв и прекращение эрозионных процессов на распаханных землях юго-востока ЦЧЗ.

Pollen‐based quantitative reconstructions of Holocene regional vegetation cover (plant‐functional types and land‐cover types) in Europe suitable for climate modelling

Journal Articles & Books
Décembre, 2015
Irlande
Europe

We present quantitative reconstructions of regional vegetation cover in north‐western Europe, western Europe north of the Alps, and eastern Europe for five time windows in the Holocene [around 6k, 3k, 0.5k, 0.2k, and 0.05k calendar years before present (bp)] at a 1° × 1° spatial scale with the objective of producing vegetation descriptions suitable for climate modelling.

Thresholds of species loss in Amazonian deforestation frontier landscapes

Journal Articles & Books
Décembre, 2015

In the Brazilian Amazon, private land accounts for the majority of remaining native vegetation. Understanding how land‐use change affects the composition and distribution of biodiversity in farmlands is critical for improving conservation strategies in the face of rapid agricultural expansion. Working across an area exceeding 3 million ha in the southwestern state of Rondônia, we assessed how the extent and configuration of remnant forest in replicate 10,000‐ha landscapes has affected the occurrence of a suite of Amazonian mammals and birds.