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Delineation of site-specific management units for operational applications using the topographic position index in La Pampa, Argentina [PDF]

Computers and Electronics in Agriculture, 2016
Display Omitted Yield values are related to water availability, soil texture and topography.The topographic position index (TPI) can be used to evaluate local topography.TPI correlates better with yield than topography.The topographic features were characterized using the autocorrelation function.Classified TPI maps can be used to delineate MU for ...
María Soledad Mieza, Walter Rubén Cravero, Federico Darío Kovac, Pablo Gastón Bargiano   +3 more
exaly   +4 more sources

An improved Topographic Wetness Index considering topographic position

2010 18th International Conference on Geoinformatics, 2010
The Topographic Wetness Index (TWI) is frequently used to simulate the soil moisture conditions in a watershed quantitatively, and it is the most commonly used indicator for static soil moisture content as well. So it plays an important role in the research of soil erosion and distributed hydrological model in watersheds, etc.
Jianchao Ma, Junming Chen
exaly   +3 more sources

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Application of the topographic position index to heterogeneous landscapes

Geomorphology, 2013
Topographic position index (TPI) is an algorithm increasingly used to measure topographic slope positions and to automate landform classifications. We applied TPI to a geoarchaeological research project in northwestern Belgium but its use led to erroneous landform classifications in this heterogeneous landscape.
Jeroen De Reu, Jean Bourgeois, Machteld Bats   +2 more
exaly   +2 more sources

A Parsimonious Approach to Estimate Soil Organic Carbon Applying Unmanned Aerial System (UAS) Multispectral Imagery and the Topographic Position Index in a Heterogeneous Soil Landscape [PDF]

Remote Sensing, 2021
Remote sensing plays an increasingly key role in the determination of soil organic carbon (SOC) stored in agriculturally managed topsoils at the regional and field scales. Contemporary Unmanned Aerial Systems (UAS) carrying low-cost and lightweight multispectral sensors provide high spatial resolution imagery (<10 cm).
Marc Wehrhan, Michael Sommer, Sommer Michael   +2 more
exaly   +4 more sources

Topographic Position-based Stream definition (TPS): A simple method to address spatial variability of drainage density in stream networks

Hydrological Sciences Journal, 2022
Defining river networks from a digital elevation model (DEM) is a critical step in many hydrological studies. Most methods rely on analyses of flow accumulation based on a single drainage area threshold value.
Rafael Barbedo, Vinicius Alencar Siqueira, Walter Collischonn   +2 more
exaly   +1 more source

Topographic characterization of seismic networks using topographic position index and Voronoi tiles: a case of the Hokuriku region, Japan

Arabian Journal of Geosciences, 2018
Usually, seismic record stations are established in various topographic slope positions, from valleys to ridges. In most previous studies, topographic amplification factor (TAF) is proposed as one of the indicators of earthquake wave amplification which can lead to overestimation of earthquake magnitudes in seismic networks.
Sadra Karimzadeh, Masakatsu Miyajima
exaly   +2 more sources

Identifying Small Depressional Wetlands and Using a Topographic Position Index to Infer Hydroperiod Regimes for Pond-Breeding Amphibians

Wetlands, 2017
Small, seasonal pools and temporary ponds (
Jeffrey W Riley, Daniel L Calhoun, William J Barichivich   +2 more
exaly   +2 more sources

Development of topographic position index based on Jenness algorithm for precision agriculture at Kerala, India

Spatial Information Research, 2017
This study is an attempt to classify the topographic position index (TPI) and landforms of Kerala State, India using complex spatial statistics and GIS application to identify and extract geomorphologic properties of digital elevation model with 30 m resolution.
exaly   +2 more sources

Investigating the spatial distribution of flood inundation and landforms using topographic position index (TPI) and geomorphon-based automated landform classification methods

Journal of Earth System Science
Laxmi Gupta, Jagabandhu Dixit, Gupta Laxmi   +2 more
exaly   +2 more sources

The Modification of Soil Moisture Deficit Calculation Using Topographic Wetness Index to Account For the Effect of Slope and Landscape Position

2012 Dallas, Texas, July 29 - August 1, 2012, 2012
The Sustainable Nutrient Management Decision Support System (SNM-DSS) has been developed to provide farmers with advise on minimising Nitrogen and Phosphorous loss from land spread organic and mineral fertilisers. Within the SNM-DSS, the Hybrid Soil Moisture Deficit (SMD) model (Schulte et al., 2005) is used to assess when slurry spreading is ‘safe ...
null Gillian L Lewis, null Nicholas M Holden   +1 more
openaire   +1 more source