Essays about: "Vegetation Indices"

Showing result 11 - 15 of 65 essays containing the words Vegetation Indices.

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

   University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

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

   Abstract : 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. READ MORE

3. 12. Multi-scale topography assessment for site-specific drought management in Sweden

   University essay from SLU/Dept. of Soil and Environment

   Author : Karl Knaebel; [2021]
   Keywords : drought; topography; precision agriculture; Sentinel-2; DSS;

   Abstract : 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. READ MORE

4. 13. The role of agricultural drainage in controlling the effectiveness of two-stage ditches in Sweden

   University essay from SLU/Dept. of Soil and Environment

   Author : Neerajaa Nagarajan; [2021]
   Keywords : Subsurface drainage; Absorbance flourescence spectroscopy; Suspended sediments; NO3N; NH4N; PO4P; TP values; DOM indices;

   Abstract : Increased agricultural activities are causing eutrophication in downstream water bodies. To mitigate nutrient leaching from cropland, various in-field and edge-of-field practices have been implemented. READ MORE

5. 14. Development of a deep learning method for soil moisture estimation at high spatial and temporal resolution using satellite data

   University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

   Author : Nicklas Simonsen; [2021]
   Keywords : Physical Geography and Ecosystem Analysis; Machine Learning; Deep Learning; Recurrent Neural Network; LSTM; Soil Moisture; Remote Sensing; SAR; Sentinel-1; Sentinel-2; ISMN; ICOS: Geomatics; Earth and Environmental Sciences;

   Abstract : Soil moisture (SM) is an essential climate variable that controls fundamental hydrological and climatic processes. Soil moisture products derived from microwave remote sensing often provide measurements at low spatial resolution and incomplete temporal records. READ MORE

6. 15. Assessing annual forest phenology: a comparison of Unmanned Aerial Vehicle (UAV) and phenocamera datasets

   University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

   Author : Shangharsha Thapa; [2020]
   Keywords : Geography; Ecosystem Analysis; Near-surface Remote Sensing; UAV; Phenocamera; Forest Phenology; Phenophase; Seasonality; NDVI; GCC; Geomatics; Earth and Environmental Sciences;

   Abstract : Near-surface remote sensing platforms such as Unmanned Aerial Vehicles (UAVs) and phenocameras appear to be potential platforms for keeping track of seasonal dynamics at a local scale. This research focusses on extracting time series of different vegetation indices (VIs) from both platforms, computing seasonality events from them and comparing the results against spectral sensor data. READ MORE