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UID:pretalx-foss4g-it-2023-J9M9XE@talks.staging.osgeo.org
DTSTART;TZID=GMT:20230612T171500
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DESCRIPTION:Deforestation is one of the main drivers of environmental degra
 dation around the world. Slash-and-burn is a common practice\, performed i
 n tropical forests to create new agricultural lands for local communities.
  In Madagascar\, this practice affects many natural areas including lemurs
 ’ habitats. Reforestation within natural reserves is desirable combining
  native species with fast-growing ones\, aiming at habitats restoration. I
 n this context\, the extensive detection of forest disturbances can effect
 ively support restoration actions\, providing an overall framework to addr
 ess priorities and maximizing ecological benefits. In this work and with r
 espect to a study area located around the Maromizaha New Protected Area (M
 adagascar)\, an analysis was conducted based on a time series of NDVI maps
  from Landsat missions (GSD = 30 m). The period 1991-2022 was investigated
  to detect location and moment of forest disturbances with the additional 
 aim of quantifying the level of damage and of the recovery process at ever
 y disturbed location. It is worth to remind that the Maromizaha New Protec
 ted Area presently hosts 12 species of lemurs. Detection was operated at p
 ixel level by analyzing the local temporal profile of NDVI (yearly step). 
 Time of the eventual detected disturbance was found within the profile loo
 king for the first derivative minimum. Significance of NDVI change was eva
 luated testing the Cebyšëv condition and the following parameters mapped
 : (i) level of damage\; (ii) year of disturbance\; (iii) year of the event
 ual “total” recovery\; (iv) rate of recovery. Finally\, temporal trend
 s of both forest lost and recovery were analyzed to investigate potential 
 impacts onto local lemurs population and\, more in general\, to the entire
  Reserve.
DTSTAMP:20260518T183801Z
LOCATION:Sala Videoconferenza @ PoliBa
SUMMARY:A Possible Role of NDVI Time Series from Landsat Mission to Charact
 erize Lemurs’ Habitats Degradation in Madagascar - Enrico Borgogno-Mondi
 no\, Federica Ghilardi\, Samuele De Petris\, Valeria Torti\, Cristina Giac
 oma
URL:https://talks.staging.osgeo.org/foss4g-it-2023/talk/J9M9XE/
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