Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Field Application of Global Positioning System01:28

Field Application of Global Positioning System

385
The Global Positioning System (GPS) has become an indispensable tool in fieldwork, offering unparalleled precision and efficiency for surveying, navigation, and infrastructure development. By harnessing signals from a constellation of satellites, GPS receivers determine the location of objects with remarkable speed and accuracy, often completing calculations within a second.Advantages of Modern GPS TechnologyContemporary GPS receivers are designed to meet the practical demands of field...
385
Coordinates and Map Projections01:29

Coordinates and Map Projections

863
Coordinates and map projections are essential tools in accurately representing the Earth's surface for various applications, ranging from navigation to spatial analysis. The latitude and longitude coordinate system is a universally recognized framework for defining locations. Latitude specifies the distance of a point north or south of the equator, measured in degrees from 0° at the equator to 90° at the poles. Longitude indicates a location's position east or west of the prime meridian,...
863
Levels of Use of a GIS01:29

Levels of Use of a GIS

471
Geographic Information Systems (GIS) operate across three levels of application, each representing an increasing degree of complexity: data management, analysis, and prediction. These levels reflect the expanding functionality and versatility of GIS technology in handling spatial data for diverse purposes.Data ManagementAt its foundational level, GIS serves as a tool for data management, enabling the input, storage, retrieval, and organization of spatial data. This level is often employed in...
471
Geoid and Ellipsoid01:28

Geoid and Ellipsoid

1.2K
The Earth's shape is best described as an ellipsoid, a slightly flattened sphere created by rotating an ellipse around its minor axis. This flattening results in the polar axis being about 21 kilometers shorter than the equatorial axis. In contrast, the geoid represents the Earth's gravitational shape and aligns with the mean sea level (MSL). The geoid is an irregular equipotential surface where gravity is perpendicular at every point. Variations in Earth's mass distribution cause geoid...
1.2K
Maximum Size of Aggregate01:12

Maximum Size of Aggregate

1.1K
The maximum size of aggregate is defined as the aperture of the sieve retaining 15 percent or more of the particles present in the aggregate sample. The aggregate's maximum size impacts the concrete's water requirement, workability, and strength. Larger aggregates reduce the surface area needing cement paste coverage, which can lower water needs, thereby allowing a decrease in the water-to-cement ratio when the desired workability and richness of the mix are to be maintained, which can...
1.1K
Topographic Surveying and Contours01:29

Topographic Surveying and Contours

1.5K
Topographic surveying is critical for documenting the Earth's surface, focusing on capturing elevations, slopes, and natural and man-made features. It is essential in construction planning, water resource management, and land-use analysis. The primary outcome of such surveys is a topographic map, which uses contour lines to visually represent the shape and slope of the terrain, providing valuable insights into the landscape's characteristics.Contour lines are fundamental to understanding the...
1.5K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Assessing the Efficacy of GameBreaker Softshell Headgear in Reducing Peak Head Kinematics.

Annals of biomedical engineering·2026
Same author

Correction: Consolidating Dispersed Knowledge About Citizen Science and Citizen Observatories: Experiences from the Four WeObserve Communities of Practice.

Environmental management·2026
Same author

Climate-smart composting strategies.

Nature food·2026
Same author

Establishing a preliminary normative database of oral efficiency for children: the Test of Masticating and Swallowing Solids Application (ToMaSSApp).

European journal of pediatrics·2026
Same author

Integrating habitat suitability, socioeconomics, and infrastructure to assess global biological invasion risk under climate change: A case study of the rice stem borer, Chilo suppressalis.

Pest management science·2026
Same author

Environmental impacts of alternatives to animal-source foods: a scoping review.

The Lancet. Planetary health·2026
Same journal

Individual Trees Respond to 40 Years of Climate Change Through Leaf Functional Trait Acclimation.

Global change biology·2026
Same journal

Soil Microbial Diversity and Network Organization Respond to Land Use and Agricultural Inputs Worldwide.

Global change biology·2026
Same journal

Divergence From Temperate Models: Pollution Dominance and Stochastic Assembly in a Continental Freshwater System Under Compressed Modernity.

Global change biology·2026
Same journal

Stomatal Decoupling From Photosynthesis Under High Temperatures Is Consistent With Stomatal Optimisation.

Global change biology·2026
Same journal

Microbial Community Structure, Rather Than Diversity, Predicts Plant Yield Under Global Change.

Global change biology·2026
Same journal

Improving GPP and SIF Simulation With a Mechanistic Photosynthesis Model Integrated Into the BEPS Framework.

Global change biology·2026
See all related articles

Related Experiment Video

Updated: Apr 18, 2026

Use of Principal Components for Scaling Up Topographic Models to Map Soil Redistribution and Soil Organic Carbon
09:44

Use of Principal Components for Scaling Up Topographic Models to Map Soil Redistribution and Soil Organic Carbon

Published on: October 16, 2018

10.8K

Mapping global cropland and field size.

Steffen Fritz1, Linda See, Ian McCallum

  • 1International Institute for Applied Systems Analysis (IIASA), Schlossplatz 1, A-2361, Laxenburg, Austria.

Global Change Biology
|February 3, 2015
PubMed
Summary
This summary is machine-generated.

A new global cropland map and field size map for 2005 were developed using integrated data and crowdsourcing. These crucial agricultural monitoring tools are now freely available online.

Keywords:
agricultural intensitycroplanddata fusionfield sizeland coversynergy map

More Related Videos

Measuring and Mapping Patterns of Soil Erosion and Deposition Related to Soil Carbonate Concentrations Under Agricultural Management
08:09

Measuring and Mapping Patterns of Soil Erosion and Deposition Related to Soil Carbonate Concentrations Under Agricultural Management

Published on: September 12, 2017

12.5K
Cereal Crop Ear Counting in Field Conditions Using Zenithal RGB Images
11:49

Cereal Crop Ear Counting in Field Conditions Using Zenithal RGB Images

Published on: February 2, 2019

10.0K

Related Experiment Videos

Last Updated: Apr 18, 2026

Use of Principal Components for Scaling Up Topographic Models to Map Soil Redistribution and Soil Organic Carbon
09:44

Use of Principal Components for Scaling Up Topographic Models to Map Soil Redistribution and Soil Organic Carbon

Published on: October 16, 2018

10.8K
Measuring and Mapping Patterns of Soil Erosion and Deposition Related to Soil Carbonate Concentrations Under Agricultural Management
08:09

Measuring and Mapping Patterns of Soil Erosion and Deposition Related to Soil Carbonate Concentrations Under Agricultural Management

Published on: September 12, 2017

12.5K
Cereal Crop Ear Counting in Field Conditions Using Zenithal RGB Images
11:49

Cereal Crop Ear Counting in Field Conditions Using Zenithal RGB Images

Published on: February 2, 2019

10.0K

Area of Science:

  • Geosciences
  • Agricultural Science
  • Remote Sensing

Background:

  • Accurate global cropland data is essential for agricultural monitoring and land use modeling.
  • Existing global land cover products have limitations in resolution and accuracy for specific agricultural applications.

Purpose of the Study:

  • To develop a high-resolution (1 km) global cropland percentage map for the baseline year 2005.
  • To create the first global field size map to complement the cropland data.
  • To provide essential inputs for global agricultural monitoring initiatives like GEOGLAM and land use modeling.

Main Methods:

  • Integration of multiple global, regional, and national cropland maps (e.g., GlobCover, MODIS, AFRICOVER).
  • National-level product ranking using crowdsourced Geo-Wiki data to determine cropland likelihood.
  • Calibration with national and subnational crop statistics for spatial distribution.
  • Development of a global field size map through interpolation of crowdsourced field data.

Main Results:

  • A 1 km global IIASA-IFPRI cropland percentage map for 2005 with 82.4% overall accuracy.
  • The new cropland product demonstrated a lower root mean square error compared to the EarthStat product.
  • A novel global field size map was generated, showing satisfactory agreement with validation data.

Conclusions:

  • The developed cropland and field size maps are critical, freely available resources for global agricultural monitoring and land use modeling.
  • These products enhance the capabilities of initiatives like GEOGLAM by providing improved baseline cropland information.
  • The integration of crowdsourced data and multiple data sources offers a robust methodology for creating global environmental datasets.