Temporal Analysis of Normalized Difference Vegetation Index (NDVI) and Land Surface Temperature (LST) Parameters to Detect Changes in the Iberian Land Cover between 1981 and 2001

International Journal of Remote Sensing, Vol. 32, No. 7, 10 April 2011, 2057–2068


“In past decades, the Iberian Peninsula has been shown to have suffered vegetation changes such as desertification and reforestation. Normalized difference vegetation index (NDVI) and land surface temperature (LST) parameters, estimated from data acquired by the Advanced Very High Resolution Radiometer (AVHRR) sensor onboard the National Oceanic and Atmospheric Administration (NOAA) satellite series, are particularly adapted to assess these changes. This work presents an application of the yearly land-cover dynamics (YLCD)methodology to analyse the behaviour of the vegetation, which consists of a combinedmultitemporal study of the NDVI and LST parameters on a yearly basis.Throughout the 1981–2001 period, trend analysis of the YLCD parameters emphasizes the areas that have endured the greatest changes in their vegetation. This result is corroborated by results from previous studies.”

Poland Implements Esri-Based INSPIRE Solution

Spatial Data and Services Will be Accessible throughout the Country

The Head Office of Geodesy and Cartography in Poland (GUGiK) is implementing an Esri-based solution to support compliance with the European Union’s Infrastructure for Spatial Information in Europe (INSPIRE) Directive. The directive sets out a framework and timetable for implementing a pan-European spatial data infrastructure (SDI) to address multinational and multi-agency issues. GUGiK is the central state administration unit responsible for national policy related to geodesy and cartography.

Esri’s ArcGIS technology will be used to create GUGiK’s GeoPortal2, a project designed to improve access to government datasets and provide mapping and survey services to other government agencies, citizens, and businesses.

GeoPortal2 includes Esri’s ArcGIS for INSPIRE product as well as software from Esri business partner con terra GmbH. The project is being implemented by Esri distributor ESRI Polska sp. z o.o.; Esri partner GISPartner; and the largest IT company in the country, Asseco Poland SA.

GeoPortal2 is scheduled to be completed in November 2012 and will include

  • Geographic names and addresses throughout Poland
  • Integrated and unified distribution of spatial data services defined by the INSPIRE Directive
  • Streamlined and improved data maintenance
  • Digital archive of spatial data for the central registry of data
  • Uniform maintenance on all orders of data products and services
  • More accurate monitoring of distributed resources

“ESRI Polska is excited by this opportunity and fully committed to working with GUGiK to implement this strategic project successfully,” says Lech Nowogrodzki, president, ESRI Polska. “We look forward to making a real difference to the development of Poland’s, and Europe’s, SDI.”

Passed by the member states of the European Union and the European Parliament, INSPIRE’s goal is to tie European geospatial information producers and users together into a single community to improve decision making and operations for a productive and sustainable Europe.

For more information about ArcGIS for INSPIRE, visit esri.com/INSPIRE.

[Source: Esri press release]

Using Decision Tree to Develop a Soil Ecological Quality Assessment System for Planning Sustainable Construction

Expert Systems with Applications: An International Journal, Volume 38 Issue 5, May 2011

Joonhong Park, Dongwon Ki, Kangsuk Kim, Suk Jun Lee, Dong Ha Kim, Kyong Joo Oh

“Soil ecology is the foundation of the entire biosphere and plays a significant role in global ecosystems. Soil ecology is important in the decision-making aspects of mega-construction projects. Despite its significance, soil ecological quality is not normally included in environmental impact assessments for sustainable development. This study develops and presents a new expert system to assess soil microbial diversity as an indicator of soil ecology quality using decision tree (DT) algorithms and GIS (geographic information system)-based spatial analysis. Our modeling results show that forward and backward DT models provide development-oriented and conservation-oriented information maps. To resolve potential conflicts by the different model predictions, a new mapping approach was developed for identifying strict conservation and potential development areas. These results suggest that the newly developed soil ecological quality assessment system can be used for planning mega-construction projects.”

Spatial Analysis of Contraceptive Use and Unmet Need in Kenya

MEASURE Evaluation PRH, Working Paper Series, April 2011

Remare R. Ettarh

“Objective:The objective of this study was to examine the geographical variation in the use of modern contraceptive use and unmet need for family planning across Kenya and in Nairobi slums, and to identify associated individual and contextual determinants.

“Methods: Data were obtained for women aged between 15-49 years from the 2008-09 Kenya Demographic Health Survey (DHS) and the Maternal and Child Health Project (2007-09) of the Nairobi Urban Health and Demographic Surveillance System (NUHDSS). Multilevel logistic regression was used to identify associated determinants of modern contraceptive use and unmet need, and spatial techniques used to map prevalence at district and village level for the national and slum data respectively.

“Results: Significant variation in the prevalence of modern contraceptive use and unmet need was found among districts in Kenya. Age, educational attainment, parity, and household wealth were associated with contraceptive use and unmet need across Kenya and in Nairobi slums.

“Conclusion: The geographical variation in modern contraceptive use and unmet need in Kenya suggests that unidentified district-level factors influence these outcomes and need to be the focus of strategies to address the low prevalence across parts of the country.”