Results 11 to 20 of about 12,702 (268)

STUDY OF THE LANDFORMS OF THE IBICUÍ RIVER BASIN WITH USE OF TOPOGRAPHIC POSITION INDEX

open access: yesRevista Brasileira de Geomorfologia, 2018
The Topographic Position Index (TPI) is an algorithm which calculates the difference of the elevation between a central pixel ( and the mean of the elevation of its surroundings () surroundings defined by of a radius determined by the user. The study was
Romario Trentin   +1 more
doaj   +5 more sources

Topographic Position Index Predicts Within-Field Yield Variation in a Dryland Cereal Production System

open access: yesAgronomy
Agricultural systems exhibit a large degree of within-field yield variability. We require a better understanding of the drivers of this variability in order to optimally manage croplands.
Jacob A. Macdonald   +8 more
doaj   +3 more sources

Pemantauan Batas Wilayah Berdasarkan Klasifikasi Bentuk Lahan Menggunakan Metode Topographic Position Index

open access: yesMajalah Geografi Indonesia
Abstrak. Berkaitan dengan konteks batas intra-nasional, batas intra-nasional memerlukan perhatian khusus dalam pemeliharaan dan pemantauan garis batas, sebagaimana diatur dalam teori boundary making yang mencakup alokasi, delimitasi, demarkasi ...
Amelia Fauzana, Naufal Setiawan
doaj   +5 more sources

Local Topographic Model using Position Index for Analyzing the Characteristics of Unserpentinized Lateritic Zones in Sorowako Nickeliferous Laterite Deposit, Indonesia [PDF]

open access: yesInternational Journal on Advanced Science, Engineering and Information Technology, 2018
An investigation of the relationship between slope position classification and nickeliferous laterite zones over serpentinized ultramafic terrain in Sorowako, South Sulawesi has been conducted using topographic position index from Light Detection and Ranging data for digital elevation model as references with detail resolution of 5m.
Setiyo Wibowo   +2 more
openaire   +2 more sources

Topographic Analysis of Intertidal Polychaete Reefs (Sabellaria alveolata) at a Very High Spatial Resolution

open access: yesRemote Sensing, 2022
In temperate coastal regions of Western Europe, the polychaete Sabellaria alveolata (Linné) builds large intertidal reefs of several hectares on soft-bottom substrates.
Guillaume Brunier   +4 more
doaj   +2 more sources

ANÁLISE DE ELEMENTOS DO RELEVO ATRAVÉS DO TOPOGRAPHIC POSITION INDEX (TPI) DA BACIA HIDROGRÁFICA DO ARROIO PUITÃ – OESTE DO RIO GRANDE DO SUL/BRASIL

open access: yesGeography Department University of Sao Paulo, 2016
O presente trabalho teve como objetivo a determinação de classes do Topographic Position Index (TPI) na bacia hidrográfica do arroio Puitã. O arroio Puitã localiza-se no sul do Brasil, oeste do estado do Rio Grande do Sul. A base altimétrica para a definição do Topographic Position Index, foram os dados de radar do “Shuttle Radar Topography Mission ...
Romario Trentin   +2 more
openaire   +3 more sources

Modelling topographic influences on vegetation vigour in the Cradle Nature Reserve, Gauteng province, South Africa

open access: yesGeocarto International
The study explores topography and vegetation changes in the Cradle Nature Reserve’s landscape, which is characterised by interconnected water infiltration and drainage patterns with geological features such as sinkholes, using indices such as the ...
Charles Matyukira   +2 more
doaj   +2 more sources

Landscape Ecological Risk and Drivers of Land-Use Transition under the Perspective of Differences in Topographic Gradient

open access: yesLand
Human activities have caused different degrees of land-use change on different topographic gradients, with impacts on the landscape and ecosystem. Effectively preventing and addressing ecological risk (ER) and achieving harmonious coexistence between ...
Xuebin Zhang   +6 more
doaj   +2 more sources

Predicting aboveground forest biomass with topographic variables in human‐impacted tropical dry forest landscapes [PDF]

open access: yesEcosphere, 2018
Topographic variables such as slope and elevation partially explain spatial variations in aboveground biomass (AGB) within landscapes. Human activities that impact vegetation, such as cattle grazing and shifting cultivation, often follow topographic ...
Miguel A. Salinas‐Melgoza   +2 more
doaj   +2 more sources

Topographic units mapping from DEM analysis: evaluation of the Upslope Position Index (UPI) in two Tuscany (Italy) study areas [PDF]

open access: yes, 2011
The Earth’s surface is structured into landforms as the result of the spatial distribution and redistribution of materials and energy in the landscape. The study of landforms is used to make further inferences pertaining to expected site conditions such as kind and degree of pedogenesis, texture and stability of unconsolidated sediments (R.A. MacMIllan
Ciulli, A.   +4 more
openaire   +2 more sources

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