Avancerad sökning
Visar resultat 1 - 5 av 10 uppsatser som matchar ovanstående sökkriterier.
1. Monitoring deforestation in the Serranía de Chiribiquete in northern Colombian Amazon using time series analysis of satellite data
Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskapSammanfattning : Deforestation monitoring is of significant importance for the ecosystem, climate change,and policy-making. The availability of optical and synthetic aperture radar (SAR) satellite remote sensing images, along with the development of time series change detection methods, has contributed to the increasing popularity of time series analysis in forest disturbance monitoring. LÄS MER
2. Estimation of dissolved organic carbon from inland waters using remote sensing data and machine learning
Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskapSammanfattning : This thesis presents the first attempt to estimate Dissolved Organic Carbon (DOC) in inland waters over a large-scale area using satellite data and machine learning (ML) methods. Four ML approaches, namely Random Forest Regression (RFR), Support Vector Regression (SVR), Gaussian Process Regression (GPR), and a Multilayer Backpropagation Neural Network (MBPNN) were tested to retrieve DOC using a filtered version of the recently published open source AquaSat dataset with more than 16 thousand samples across the continental US matched with satellite data from Landsat 5, 7 and 8 missions. LÄS MER
3. Spatiotemporal changes in Gothenburg municipality's green space, 1986 to 2019
Master-uppsats, Göteborgs universitet/Institutionen för geovetenskaperSammanfattning : As the world’s population is becoming increasingly more urban the infrastructure expands to accommodate the inhabitants’ needs. In a dense urban environment green space has an important function since it provides vital ecosystem services, contributes to recreational and cultural values and is essential for biodiversity. LÄS MER
4. Impact of fire and frost drought events on vegetation greenness and albedo in Subarctic Scandinavia
Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskapSammanfattning : With climate change, the frequency in climate extremes such as drought, heavy rainfalls, and extreme temperatures is predicted to increase. These extremes can potentially stress and damage vegetation over large areas, leading to altered carbon cycle, vegetation greenness, albedo, and shifted species composition. LÄS MER
5. Markförändringsanalys över Karlstad mellan åren 2002 och 2015 : En studie baserad på Landsat 7/8 data och bilddifferentiering
M1-uppsats, Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)Sammanfattning : Karlstads vision är att bli en kommun med 100 000 invånare till år 2031. För att kommunen ska nå målet innebär det att fler bostäder behöver byggas. Det innebär att det kommer bli markanvändningsförändringar inom Karlstadskommun. Den urbana miljön bör påverkats när antalet invånare i Karlstad ökar. LÄS MER
