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IssuesmapsLandLibrary Resource
There are 239 content items of different types and languages related to maps on the Land Portal.
Displaying 157 - 168 of 169

Participatory Integrated Climate Services for Agriculture (PICSA): Climate services for farmers in Latin America and the Caribbean

December, 2022
Global

Participatory Integrated Climate Services for Agriculture (PICSA) is an agricultural extension and climate services approach that supports farmers in making plans and decisions tailored to each farmer’s own ‘context’ in their production systems. It is implemented by facilitators (e.g., extension officers, non-governmental organisation field staff, community volunteers and researchers) through a series of meetings with groups of farmers.

Mapping the suitability of selected crops in the Ganges Delta

December, 2022
Philippines

Assessing the suitability of different crops in specific geographic locations is crucial for optimizing crop productivity, promoting climate resilience, and guiding land use decisions. This study assessed the biophysical suitability of rice, watermelon and maize in the Ganges Delta, one of the most densely populated deltas in the world and also extremely vulnerable to climate change. This delta is expected to increasingly experience more frequent and intense extreme weather events, sea level rise and food insecurity.

Banana bunchy top disease in Africa – Predicting continent‐wide disease risks by combining survey data and expert knowledge

December, 2022
Global

Across Africa, banana bunchy top disease (BBTD) severely impacts banana production and livelihoods of millions of small-holder farmers. Mapping vulnerability of landscapes to monitor BBTD establishment and spread is crucial for proactive measures of disease exclusion. To highlight current and future risks of BBTD in Africa, using logistic regression, the relationship between 1160 field-observations from 14 BBTD surveys and environmental covariate maps was determined.

Decoding the vitality of earth observation for flood monitoring in the Lower Godavari River Basin, India

December, 2022
India

The entire Indian subcontinent experienced devastating floods in the year 2022. The central section of the Godavari river basin (GRB) received torrential rainfall from the southwest monsoon during the second week of July 2022. This study exhibits how Earth observation (EO) datasets and cloud platforms like Google Earth Engine (GEE) can be used for swift, lucid and accurate decoding of the flood inundation signatures. Geospatial analysts can estimate concurrent floods using high-resolution C-band SAR/Sentinel-1 images, gridded precipitation and streamflow forecast datasets.

Implementing Cloud Computing for the Digital Mapping of Agricultural Soil Properties from High Resolution UAV Multispectral Imagery

December, 2022
Global

The spatial heterogeneity of soil properties has a significant impact on crop growth, making it difficult to adopt site-specific crop management practices. Traditional laboratory-based analyses are costly, and data extrapolation for mapping soil properties using high-resolution imagery becomes a computationally expensive procedure, taking days or weeks to obtain accurate results using a desktop workstation. To overcome these challenges, cloud-based solutions such as Google Earth Engine (GEE) have been used to analyze complex data with machine learning algorithms.

Global mapping of volumetric water retention at 100, 330 and 15 000 cm suction using the WoSIS database

December, 2022
Global

Present global maps of soil water retention (SWR) are mostly derived from pedotransfer functions (PTFs) applied to maps of other basic soil properties. As an alternative, ‘point-based’ mapping of soil water content can improve global soil data availability and quality. We developed point-based global maps with estimated uncertainty of the volumetric SWR at 100, 330 and 15 000 cm suction using measured SWR data extracted from the WoSIS Soil Profile Database together with data estimated by a random forest PTF (PTF-RF).

Distribution of drought events and their impact on child malnutrition in Senegal [Abstract only]

December, 2022
Senegal

Climate change has become a significant threat to Western African countries in recent decades, including Senegal. Further, there has been an increasing occurrence of extreme events such as droughts. Droughts, directly and indirectly, have detrimental impacts on human health and often trigger nutritional status in the respective region. Children under the age of five are more vulnerable to Droughts in terms of malnutrition. In Senegal also, drought has unforeseen impacts on health systems and impacts the nutritional dynamics of children.

Myanmar Agricultural Performance Survey Round One: Note on Sample Characteristics and Weighting

December, 2022
Myanmar

The first round of the Myanmar Agricultural Performance Survey (MAPS)–a nationwide phone panel consisting of 3,893 households–was implemented between February 2022 and March 2022. The objective of the survey was to collect data on farm characteristics and agricultural assets, area and crops planted, access to inputs, crop marketing, and constraints in agricultural activities.

Monitoring of the mangrove ecosystem in the province of Guayas-Ecuador during the period 2018-2022.

December, 2022
Global

Mangroves are highly productive ecosystems that provide important ecosystem services, are strategic allies in carbon capture and storage, conserve different plant and wildlife species, are producers of aquatic species such as crabs and shrimp, and local communities have developed strong economic, cultural and identity ties. Despite their great ecological, economic, and social importance, mangroves are threatened by natural and anthropogenic factors, hence the importance of their constant monitoring.

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Earth Observations for Humanitarian Applications

05 June 2024 - 19 June 2024

NASA’s Applied Remote Sensing Training Program (ARSET) has opened a new open, online webinar series: Earth Observations for Humanitarian Applications. Refugees, internally displaced people (IDPs), and other displaced populations are made more vulnerable to climate change impacts due to their socio-political marginalization. This three-part, intermediate training presents concrete strategies for mapping localized climate conditions with risks faced by refugee and IDP communities around the world.

The training will focus on flood risk assessments and specific challenges for assessing flood risk in refugee and IDP camps; gauging long-term heat stress in refugee camps and the challenges with decision making surrounding heat risk; and monitoring drought effects on agricultural landscapes in refugee settings using Earth observations (EO) to explore the correlations between anomalies in crop productivity and weather-based factors

 

Assessing the Impacts of Fires on Watershed Health

05 July 2023 - 12 July 2023

NASA’s Applied Remote Sensing Training Program (ARSET) has opened a new open, online webinar series: Assessing the Impacts of Fires on Watershed Health. This advanced-level, three-part training will focus on using remote sensing observations for monitoring post-fire impacts on watershed health. Specifically, this training will highlight uses of NASA Earth observations (EO) for pre-fire land cover mapping, watershed delineation and stream mapping, post-fire burn severity mapping, and pre- and post-fire riverine and freshwater water quality.

Fundamentals of Machine Learning for Earth Science

19 April 2023 - 03 May 2023

NASA’s Applied Remote Sensing Training Program (ARSET) has opened a new online introductory webinar series: Fundamentals of Machine Learning for Earth Science. This three-part training, presented in English and Spanish, is open to the public and will provide attendees an overview of machine learning in regards to Earth Science, and how to apply these algorithms and techniques to remote sensing data in a meaningful way. Attendees will also be provided with end-to-end case study examples for generating a simple random forest model for land cover classification from optical remote sensing. We will also present additional case studies to apply the presented workflows using additional NASA data.

 

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