Essays about: "LPJ-GUESS"
Showing result 11 - 15 of 34 essays containing the word LPJ-GUESS.
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11. A detailed study on Amazon Forest structure and mortality rates through LPJ-GUESS vegetation model
University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskapAbstract : Nowadays it has become relevant for scientists to understand the impact of tropical forest structure on the Global Carbon Cycle. Dynamic vegetation models have been developed to pursue this issue, specifically by improving algorithms that could analyze the allometry, biomass content and mortality rate of each singular simulated plant individual and how this responds to climate change, management and rising CO2 concentrations. READ MORE
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12. Evaluation of estate level forest management strategies in terms of ecosystem services and biodiversity aspects
University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskapAbstract : Ecosystem services from forests provide society with a multitude of benefits. However, current research shows that in Swedish forests aspects of ecosystem services have a status ranging from “moderate” to “inadequate”. READ MORE
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13. Evaluating the ability of LPJ-GUESS to simulate the tree size structures of tropical forests
University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskapAbstract : Tropical forests are of great importance to all living-beings due to their high biodiversity and the valu-able resources, such as food and fuel, they provide. In addition, tropical trees sequester a high amount of carbon and consequently over half of the global forest carbon stock can be found in the tropics. READ MORE
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14. Increasing forest mortality and its drivers: Simulating central European forests under climate change
University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskapAbstract : Increasing tree growth and mortality rates in Europe are still poorly understood and have been attributed to a variety of drivers. This study aimed to relate increasing forest mortality rates in six central European countries to climate drivers (CO2 concentration, temperature and precipitation) from 1985-2015, using a process-based vegetation model. READ MORE
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15. Multitask Convolutional Neural Network Emulators for Global Crop Models - Supervised Deep Learning in Large Hypercubes of Non-IID Data
University essay from Lunds universitet/Matematisk statistikAbstract : The aim of this thesis is to establish whether a neural network (NN) can be used for emulation of simulated global crop production - retrieved from the computationally demanding dynamic global vegetation model (DGVM) Lund-Potsdam-Jena General Ecosystem Simulator (LPJ-GUESS). It has been devoted to elaboration with various types of neural network architectures: Branched NNs capable of processing inputs of mixed data types; Convolutional Neural Network (CNN) architectures able to perform automated temporal feature extraction of the given weather time series; simpler fully connected (FC) structures as well as Multitask NNs. READ MORE
