نتایج جستجو برای: vegetation patches

تعداد نتایج: 70020  

Journal: :Forest Ecology and Management 2021

In the cold temperate zone of western and southern slopes Changbai Mountain, Betula ermanii Cham. forest, Picea jezoensis (Siebold & Zucc.) Carrière mixed forests B. P. are heterogeneously distributed in a mosaic patches, reason for this formation is still unclear. August 1986, typhoon disturbed on forming large number forest gaps. After more than 30 years vegetation succession, patches wind-st...

Journal: :GI Forum ... 2023

Using forests as burial and ceremonial places is a long-standing cultural practice in Mozambique. However, this information still not translated into land-cover land-use maps. Thus the locations of these their descriptions remain unknown. To address gap knowledge, paper presents results mapping 52 local heritage sites Inhambane, analysing changes two locally protected forest patches. Results fr...

Journal: :Forests 2021

The present study focuses on the mosaic-like occurrences of patches steppes and fore-steppes in Pannonian forest-steppe zone. We current vegetation, which is maintained including by human landscape use, i.e., grazing mowing. area complex for this reason it shows changes differences vegetation more diversely. wanted to answer questions: Do sand forest-steppes occur Ipoly Valley what location? Wh...

2004
Charles H. Peterson Richard A. Luettich Fiorenza Micheli Gregory A. Skilleter

An understanding of how habitat structure influences physical environmental processes that are important to organisms utilizing the habitat is a necessary basis for predicting biological responses to habitat variation. Seagrass meadows represent an important coastal nursery habitat that modifies the local flow environment. We used basic fluid-dynamic balances to construct a simple model of the ...

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2010
Jean-François Ponge

24 25 The combined effects of isolation within an unfavourable matrix and vegetation 26 development were studied in patches of scrub vegetation on a tropical inselberg (Nouragues, 27 French Guiana). Three thickets ~10 m 2 area were sampled, located at ~30 m distance from 28 each other, in which the same vegetation types were present at less than 3 m distance: 29 canopies of Clusia minor (Clusia...

Journal: :Remote Sensing 2017
Takeshi Inomata Flory Pinzón José Luis Ranchos Tsuyoshi Haraguchi Hiroo Nasu Juan Carlos Fernandez Diaz Kazuo Aoyama Hitoshi Yonenobu

The successful analysis of LiDAR data for archaeological research requires an evaluation of effects of different vegetation types and the use of adequate visualization techniques for the identification of archaeological features. The Ceibal-Petexbatun Archaeological Project conducted a LiDAR survey of an area of 20 × 20 km around the Maya site of Ceibal, Guatemala, which comprises diverse veget...

Journal: :Remote Sensing 2014
Jianhua Zhou Bailang Yu Jun Qin

Spurious change is a common problem in urban vegetation change detection by using multi-temporal remote sensing images of high resolution. This usually results from the false-absent and false-present vegetation patches in an obscured and/or shaded scene. The presented approach focuses on object-based change detection with joint use of spatial and spectral information, referring to it as multi-l...

2009
Alemu Gonsamo Petri Pellikka

The major physiological processes of vegetation including photosynthesis and evapotranspiration are determined by the vegetation biophysical parameters that describe the canopy structure. Leaf area index (LAI) is one of the principal biophysical parameters in climate, weather, and ecological studies, and has been routinely estimated from remote sensing measurements. LAI is defined as one half t...

2017
M. Joseph Hughes Douglas Kaylor Daniel J. Hayes Warren B. Cohen

In the species-rich and structurally complex forests of the Eastern United States, disturbance events are often partial and therefore difficult to detect using remote sensing methods. Here we present a set of new algorithms, collectively called Vegetation Regeneration and Disturbance Estimates through Time (VeRDET), which employ a novel patch-based approach to detect periods of vegetation distu...

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