Sökning: "drought index"

Visar resultat 11 - 15 av 45 uppsatser innehållade orden drought index.

1. 11. Topographic controls of drought impact on Swedish primary forests

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

   Författare :Johanna Asch; [2021]
   Nyckelord :Physical geography; ecosystem analysis; primary forest; boreal forest; drought impact; topography; drainage; climate change; random forest; terrain index; Earth and Environmental Sciences;

   Sammanfattning : Anthropogenic climate change has increased the frequency of extreme drought events and leads to “hotter” droughts. Topography controls plant available water and site-specific climatic conditions. Drought sensitivity may therefore vary over short distances between wet and dry locations of the landscape. LÄS MER

3. 12. Effects of the 2018 drought on mire productivity in Skogaryd - Evaluation of ground sensors, satellite data and meteorological data

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

   Författare :Ines Júlio Alfredo; [2021]
   Nyckelord :Sentinel 2; Vegetation Indices; Ground Sensors; Drought and Mire; Earth and Environmental Sciences;

   Sammanfattning : The drought is a complex meteorological phenomenon associated with low precipitation and low water saturation in atmosphere, soils and plants and can has a great effect on aboveground biomass and change the structure and function of the ecosystems. The droughts also are known to reduce the primary and secondary productivity of vegetation. LÄS MER

4. 13. Impact of fire and frost drought events on vegetation greenness and albedo in Subarctic Scandinavia

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

   Författare :Elin Backström; [2021]
   Nyckelord :Physical Geography and Ecosystem analysis; Vegetation Greenness; Albedo; Fire; Frost Drought; Earth and Environmental Sciences;

   Sammanfattning : 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. 14. Vegetation-climate interactions in California – an in-depth analysis on the influence of climatic events across different Californian biomes

   Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

   Författare :Felipe Fileni; [2021]
   Nyckelord :droughts; climate vegetation interactions; SPEI; NDVI; California;

   Sammanfattning : It is widely accepted that climate variability is a key driver of vegetation productivity. Yet, there are discrepancies on the ideal timescales of climatic events and vegetation response. The work herein attempts to clarify how those variables interact in the region of California. LÄS MER

7. 15. Multi-scale topography assessment for site-specific drought management in Sweden

   Master-uppsats, SLU/Dept. of Soil and Environment

   Författare :Karl Knaebel; [2021]
   Nyckelord :drought; topography; precision agriculture; Sentinel-2; DSS;

   Sammanfattning : Globally, as well as in Sweden, the occurrence of droughts is expected to increase due to global warming. The drought summer of 2018 revealed the vulnerability of Sweden’s agriculture – with cereal yield losses of up to 50 %. Subsequently, the development of more resilience crop production systems to mitigate future droughts is required. LÄS MER