Results 11 to 20 of about 94,613 (298)

The concept of potential natural vegetation: an epitaph?

open access: yesJournal of Vegetation Science, 2010
We discuss the usefulness of the concept of Potential Natural Vegetation (PNV), which describes the expected state of mature vegetation in the absence of human intervention. We argue that it is impossible to model PNV because of (i) the methodological problems associated to its definition and (ii) the issues related to the ecosystems dynamics.We ...
Alessandro Chiarucci   +4 more
core   +7 more sources

Long‐term vegetation stability and the concept of potential natural vegetation in the Neotropics

open access: yesJournal of Vegetation Science, 2015
AbstractWhen vegetation trends over time are analysed from an appropriate long‐term perspective using palaeoecological records, the concept of potential natural vegetation (PNV) is unsupported because of continual vegetation changes driven by natural or anthropic forcings. However, some palaeoecological records show long‐lasting (i.e.
Rull, Valentí
openaire   +3 more sources

Potential distribution of biomes (Potential Natural Vegetation) at 250 m spatial resolution

open access: yes, 2018
Potential distribution of biomes (Potential Natural Vegetation) at 250 m spatial resolution based on the BIOME 6000 data set (8057 modern pollen-based site reconstructions). Predicted at 250 m using Ensemble Machine Learning and relief and climate variables representing the climate for the last 20+ years.
Hengl, Tomislav
openaire   +3 more sources

Potential natural vegetation: reburying or reboring? [PDF]

open access: yesJournal of Vegetation Science, 2012
AbstractThis paper deals with the recent debate on the potential natural vegetation (PNV) concept. After reviewing its limitations with respect to understanding of the processes involved in secondary succession, spatial and temporal scaling and data processing, we still consider it a useful tool for summarizing knowledge about a territory in a way that
Javier Loidi   +1 more
openaire   +1 more source

Deep Learning Approach for Detection of Underground Natural Gas Micro-Leakage Using Infrared Thermal Images

open access: yesSensors, 2022
The leakage of underground natural gas has a negative impact on the environment and safety. Trace amounts of gas leak concentration cannot reach the threshold for direct detection.
Kangni Xiong   +5 more
doaj   +1 more source

Assessing Vegetation Heritage Value: The Alentejo Central (Portugal) as a Case Study

open access: yesLand, 2021
Vegetation natural heritage can be valued in itself, but also as a habitat for many wildlife species. This study presents a methodological essay concerning the evaluation of plant heritage, applied in Central Alentejo, in the south of Portugal.
Teresa Batista   +3 more
doaj   +1 more source

Plant community variability within potential natural vegetation units: a case study from the Bohemian Karst

open access: yesJournal of Forest Science, 2009
: Based on a map of potential natural vegetation (PNV), actual vegetation was studied in the Mramor locality (106.4 ha). A total of 188 relevés were examined using stratified random sampling. A comparison was made between trends in vegetation variability
P. Šamonil, K. Polesná, P. Unar
doaj   +1 more source

Bioévaluation du paysage végétal du massif du Haut-Vénacais (Haute-Corse)

open access: yesTerritoire en Mouvement, 2019
Located in the center of Corsica, the Haut-Vénacais massif is one of the most diversified mountainous areas in terms of vegetation landscape. This massif was chosen in the framework to an ecological and conservation status assessessment.
Pauline Delbosc   +3 more
doaj   +1 more source

Soil Response to Agricultural Land Abandonment: A Case Study of a Vineyard in Northern Italy

open access: yesAgronomy, 2021
Agricultural land abandonment is an emerging problem in European Union (EU), and about 11% of agricultural EU land is at high risk of abandonment in the coming 10 years. Land abandonment may have both positive and negative effects in ecosystems.
Luigi Sciubba   +6 more
doaj   +1 more source

Land cover classification using multi-temporal MERIS vegetation indices [PDF]

open access: yes, 2007
The spectral, spatial, and temporal resolutions of Envisat's Medium Resolution Imaging Spectrometer (MERIS) data are attractive for regional- to global-scale land cover mapping.
Mathur, A.   +7 more
core   +1 more source

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