Saturday, March 24, 2012

Quantum Leap

Quantum GIS has published several interesting case studies. Though a small set, I see an already wide variety of GIS applications: a study of green spaces by high school students in Argentina, wildlife conservation in Tanzania (with glow-in-the-dark elephant photos here) and government SDI for the state of Jalisco Mexico (pop. 7.3M). Has Open Source GIS become ready for heavy lifting? Thanks Nick M..

Thursday, March 22, 2012

Mangroves a Mundo

A study completed by Chandra Giri, E. Ochieng, Larry Tieszen and others at the USGS has mapped the world's mangroves by analysing about 1,000 LandSat scenes along with GIS, GE and other ancillary data. The researchers estimate that the 'total mangrove forest area of the world in 2000 was 137,760 sq. km', less than estimated by the previous global study, and about '0.7% of total tropical forests of the world'. Browse the results, download the data and/ or read the published paper (440KB PDF).