Global assessment and mapping of changes in mesoscale landscapes: 1992–2015

Jakub Nowosad , Tomasz Stepinski , Paweł Netzel

Abstract

Monitoring global land cover changes is important because of concerns about their impact on environment and climate. The release by the European Space Agency (ESA) of a set of worldwide annual land cover maps covering the 1992–2015 period makes possible a quantitative assessment of land change on the global scale. While ESA land cover mapping effort was motivated by the need to better characterize global and regional carbon cycles, the dataset may benefit a broad range of disciplines. To facilitate utilization of ESA maps for broad-scale problems in landscape ecology and environmental studies, we have constructed a GIS-based vector database of mesoscale landscapes – patterns of land cover categories in 9 km × 9 km tracts of land. First, we reprojected ESA maps to the Fuller projection to assure that each landscape in the database has approximately the same size and shape so the patterns of landscapes at different locations can be compared. Second, we calculated landscape attributes including its compositions in 1992 and 2015, magnitude of pattern change, categories transition matrix for detailed characterization of change, fractional abundances of plant functional types (PFTs) in 1992 and 2015, and change trend type – a simple, overall descriptor of the character of landscape change. Combining change trends and change magnitude information we constructed a global, thematic map of land change; this map offers a visualization of what, where, and to what degree has changed between 1992 and 2015. The database is SQL searchable and supports all GIS vector operations. Using change magnitude attribute we calculated that only 22% of total landmass experienced significant landscape change during the 1992–2015 period, but that change zone accounted for 80% of all pixel-based transitions. Dominant land cover transitions were forest → agriculture followed by agriculture → forest. Using PFTs attributes to calculate global aggregation of gross and net changes for major PFTs yielded results in agreement with other recent estimates.
Author Jakub Nowosad
Jakub Nowosad,,
-
, Tomasz Stepinski
Tomasz Stepinski,,
-
, Paweł Netzel (FoF / IoFRM)
Paweł Netzel,,
- Institute of Forest Resources Management
Journal seriesInternational Journal of Applied Earth Observation and Geoinformation, ISSN 0303-2434, (N/A 140 pkt, Not active)
Issue year2019
Vol78
Pages332-340
Publication size in sheets0.5
Keywords in EnglishESA CCI-LC dataset, Mapping land change, landscapes, Land cover transitions
ASJC Classification1903 Computers in Earth Sciences; 1904 Earth-Surface Processes; 2306 Global and Planetary Change; 2308 Management, Monitoring, Policy and Law
DOIDOI:10.1016/j.jag.2018.09.013
URL https://www.sciencedirect.com/science/article/pii/S0303243418305841?via%3Dihub
Languageen angielski
File
Global assessment and mapping of changes in mesoscale landscapes: 1992–2015 of 19-08-2019
16,14 MB
Score (nominal)140
Score sourcejournalList
Publication indicators WoS Citations = 5; WoS Impact Factor: 2018 = 4.846 (2) - 2018=5.194 (5)
Citation count*
Cite
Share Share

Get link to the record


* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
Back
Confirmation
Are you sure?