GregCocks, to worldwithoutus
@GregCocks@techhub.social avatar

How Accurate Are Existing Land Cover Maps For Agriculture In Sub-Saharan Africa? [metrics]

https://doi.org/10.1038/s41597-024-03306-z <-- shared paper

Map showing the number of maps that predict cropland in each 10 m/pixel location. Panel A shows the maps in the context of the African continent while Panel B gives larger views of the maps (countries not to scale). Blue and red indicate regions of high or unanimous agreement between maps for the crop and non-crop classes, respectively. Yellow indicates regions of high disagreement between maps.
charts - Time series of 16-day MODIS MOD13A1.061 Terra Vegetation Indices averaged within (A) each country and (B) an administrative level 1 region, masked using each crop mask assessed in this study.
photo - farmer, Atsbi, Tigray, Ethiopia

GregCocks, to RadioControl
@GregCocks@techhub.social avatar

The Case For Remote Sensing Of Individual Plants

https://doi.org/10.1002/ajb2.1347 <-- shared short article

# interpretation

aerial images - High-resolution images from the Planet Labs constellation of cube-sats detect flowering individual trees in the Peruvian Amazon (yellow objects in panel A) and Colombian Amazon (pink objects in panel B). Many thousands of flowering individuals are apparent across hundreds of kilometers of Amazonian forest in these flowering events. Scale bar = 500 m.
aerial and oblique remotesensing-created images - Drone remote sensing of individual trees. (A) Ultra-high-density drone lidar resolves individual tree structure in a temperate beech forest in the southern Czech Republic. Colors indicate elevation, and the tallest trees are about 40 m aboveground. Measurement density here is 4323 points per square meter. (B) High-spatial resolution optical remote sensing from a low-altitude drone in the Atlantic lowlands of Costa Rica. We used methods from computer vision to construct three-dimensional scene geometry from two-dimensional images. The image is a natural color composite. (C) Same area as B, but colored by surface elevation, where warmer colors indicate taller objects. A single Goethalsia meiantha crown is outlined in white. The area of this crown is 157.3 m2. At a pixel size of 1 cm, this crown contains 1.573 × 106 pixels, demonstrating the tremendous increase in measurement density at high-spatial resolution. Scale bar in B and C = 30 m.
graphic / schematic - drone performing remote sensing on a tree

GregCocks, to environment
@GregCocks@techhub.social avatar

Remote Sensing And Satellite Technology For Green Sustainability

https://tracextech.com/remote-sensing-and-satellite-technology-for-environmental-monitoring/ <-- shared technical article

[This post is not considered an endorsement of this specific company or product, but is shared for the overview they provide of remotesensing]

graphics / images - remote sensing - drone - trees and canopy, oblique and vertical
graphic / image - remote sensing - meanders in a river over time based on LiDAR elevation data
graphic - schematic - overview of remotesensing approaches and types

GregCocks, to geopolitics
@GregCocks@techhub.social avatar

Global Maps Of Cropland Extent And Change Show Accelerated Cropland Expansion In The Twenty-First Century

https://doi.org/10.1038/s43016-021-00429-z <-- shared paper

bubble plot chart - Total and per-capita cropland area change, 2003–2019, per geographic region (across globe)
map - Global cropland extent and change, 2000–2019.
chart - Global cropland area (map based and sample based) and annual cropland NPP

badwolf42, to France French

Hello Fosstodon,

Greetings from , .

I'm a working on and at the regional . I try to contribute as many as possible to opensource GIS ecosystem (by funding, opening issues, improve documentation, share tricks and tips) on my daily tools

GregCocks, to geopolitics
@GregCocks@techhub.social avatar

Natural Floodplains Are Quickly Vanishing

https://eos.org/articles/natural-floodplains-are-quickly-vanishing <-- shared technical article

https://doi.org/10.1038/s41597-023-02382-x <-- shared paper

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image/jpeg
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Nonog, to Europe

Did the Bronze Age deforestation of Europe affect its climate? A regional climate model study using pollen-based land cover reconstructions
https://cp.copernicus.org/articles/19/1507/2023/ #climate

bnhrdotxyz, to random

LOOKING FOR UPDATED LAND COVER MAPS?

Esri, in partnership with the Impact Observatory, released their latest Map with improved AI modeling.

IMPORTANT: The quality and fit for purpose to local applications of remotely sensed, global scale, AI products will vary. Do not accept the results/outputs blindly and always try to verify/validate to determine the accuracy/usefulness of the data for your application.

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