Land Use / Land Cover (LULC)
mapping product depicts the land cover/use according to one of the three nomenclatures. An object-based approach has been implemented using time-series of optical satellite data covering a complete growing season or year. These are used as a basis for segmentation into logical (homogeneous) units, which are then classified based on spectral and temporal characteristics.
|1972 LULC, Guadalhorce River Basin, Spain||2016 LULC, Guadalhorce River Basin, Spain|
SURFACE WATER DYNAMICS (SWD)
products display the extent of open water bodies (i.e. those not overgrown with vegetation) and its change over time. Both Synthetic Aperture Radar (SAR) and optical satellite imagery are used. The temporal dynamics product classifies (1) permanently, (2) temporarily and (3) never open water.
|2015, SWD, Burullus
LAND SURFACE TEMPERATURE (LST)
is used to detect trends and anomalies in ecosystems in terms of soil moisture and
vegetation. The effect of agricultural expansion on surface water resources can be monitored using LST time series.
|2000 -2017 LST Trend, Kilombero Floodplain, Tanzania||LST trend 2000 – 2016|
WATER QUALITY MAPS AND TREND ANALYSIS PRODUCTS
are derived from Envisat MERIS (and in the future from S3 OLCI) data and can provide
reliable and quantitative measures of chlorophyll a (CHL), total suspended matter (TSM) and colored dissolved organic matter (CDOM). These can be used as indicators of eutrophication, physical disturbance and contamination, respectively.
|2011-08 WQ Étang de Berre, France|
INVENTORIES & DELINEATION
are essential tools to take stock, monitor and act on wetlands on local to global scales. The creation and update of inventories is costly and harmonisation of different data sources is often a problem. Hence, a methodology has been designed to extract a Potential Wetland Layer (PWL) based on topographic information, satellite images and soil data. Based on this PWL a pre-inventory of wetlands can be done.
|Potential Wetland Layer, Andalusia, Spain|
Ecosystem Function – Flood Regulation
Ecosystem function – Flood regulation map shows the capacity of habitats to provide a specific ecosystem service. For example, protection against flooding can be calculated using the LULC and environmental condition data (e.g. mean distance to streams and rivers, slope, precipitations, altitude, vegetation density).
|2011 Flood regulation, Guadalhorce River Basin, Spain|
LAND USE / LAND COVER CHANGE (LULCC)
statistics are able to be derived from indicators that are calculated automatically using the SWOS software. Examples for the Ras Al Khor SWOS test site are shown below. Map showing (in red) all natural wetlands destroyed and converted into built-up areas between 1988 and 2017 (mapped using Landsat TM and Sentinel-2 time series and the SWOS tools).
|1988 LULC, Ras Al Khor, Dubai
||2017 LULC, Ras Al Khor, Dubai
||Ras Al Khor, Dubai
|Conversion of wetlands into built-up areas, Ras Al Khor, Dubai
||LULC Change 1988 – 2017, Ras Al Khor, Dubai|