Sökning: "Forest landscape model"

Visar resultat 21 - 25 av 95 uppsatser innehållade orden Forest landscape model.

1. 21. The natural pest control potential of different landscapes : mapping the ecosystem service in three regions of Sweden

   Master-uppsats, SLU/Dept. of Biosystems and Technology (from 130101)

   Författare :Charlotte Peitz; [2021]
   Nyckelord :natural pest control; natural enemies; landscapes; agricultural diversification; pesticide reduction; mapping; ecosystem service; ecological intensification; agroecology;

   Sammanfattning : Natural pest control describes the process of natural enemies suppressing pests and thus reducing crop damage and stabilizing yields. How well these beneficial arthropod predators and parasitoids can thrive in a landscape is influenced by the land-use types in the vicinity, such as forest patches, pastures, or agricultural fields, and their ability to provide resources. LÄS MER

3. 22. Deep Reinforcement Learning for the Optimization of Combining Raster Images in Forest Planning

   Master-uppsats, Mittuniversitetet/Institutionen för informationssystem och –teknologi

   Författare :Yangyang Wen; [2021]
   Nyckelord :Raster images; Optimization; Deep Reinforcement Learning; Markov Decision Process; Deep Q Learning Neural Network; Temporal Difference; Model Usefulness; Parameter Correlation; Model Effectiveness.;

   Sammanfattning : Raster images represent the treatment options of how the forest will be cut. Economic benefits from cutting the forest will be generated after the treatment is selected and executed. Existing raster images have many clusters and small sizes, this becomes the principal cause of overhead. LÄS MER

4. 23. A detailed study on Amazon Forest structure and mortality rates through LPJ-GUESS vegetation model

   Kandidat-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

   Författare :Sara Mazzuoli; [2021]
   Nyckelord :Amazon s Forest; LPJ-GUESS; simulation; TEAM-NETWORK; dynamic vegetation model; observation; mortality; allometry; tree stand structure; biomass; cohort; PFTs; plant functional types; NPP; Earth and Environmental Sciences;

   Sammanfattning : 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. LÄS MER

5. 24. Growth and management of Silver birch and Hybrid aspen in southern Sweden

   Master-uppsats, SLU/Southern Swedish Forest Research Centre

   Författare :Mari Tuvikene; [2021]
   Nyckelord :Betula pendula Roth; ; Populus × wettsteinii Hämet-Ahti = P. tremula L. × P. tremuloides Michx.; ; plantation; young stand; simulation; fertilization;

   Sammanfattning : Nowadays, the changing climate and the risks associated with it urge us to re-evaluate our silvicultural practices. Due to the increasing demand for wood and good economy amongst other factors, Swedish forest landscape is dominated by two species – Norway spruce Picea abies (L.) Karst. and Scots pine Pinus sylvestris (L. LÄS MER

7. 25. Cropland and tree cover mapping using Sentinel-2 data in an agroforestry landscape, Burkina Faso

   Master-uppsats, Göteborgs universitet/Institutionen för geovetenskaper

   Författare :Ntandokazi Masimula; [2020-06-29]
   Nyckelord :Sentinel-2; Cropland mask; Tree cover estimation; Burkina Faso; Agroforestry; Random Forest;

   Sammanfattning : Sentinel-2, with high spatial resolution bands and increased number of spectral channels, has provided increased capabilities for vegetation mapping. Cropland masks within heterogeneous areas such as the Sudano-Sahel zone have become useful for monitoring landscapes. LÄS MER