Archive for February, 2010

can geospatial technologies benefit the poor?

Sunday, February 14th, 2010

From student, AK, Intro GIS, taken from GIS, GPS, and Remote Sensing by Uwe Deichmann and Stanley Wood

The role of information and communication technologies in assisting rural development is drawing increasing attention. It promises to help isolated and disenfranchised communities transform themselves into development participants who are better informed and integrated.

GIS provides tools for visualizing, integrating, and analyzing spatial data and a unique capacity to merge information from many sources. By using a common spatial framework, GIS enables users to analyze how physical, social, and economic factors interact. Constraints to widespread use of GIS have been its high cost and complexity and the difficulty of obtaining geographically referenced (geo-referenced) data. However, as the technology has become cheaper and less complex, it has become more accessible to non-specialists.

GPS and remote-sensing techniques have reduced the problem of obtaining geo-referenced information. For instance, most field surveys now use GPS to capture the location of sample points, such as plots or households, enabling easy visualization of survey results and integration with other geographic data. GPS receivers range from the handheld models that are inexpensive, easy to use, and provide coordinate accuracy of about 10 meters to differential receivers that yield accuracy in centimeters. Great advances also have been made in remote sensing and aerial photography. Image processing techniques generate digital maps from aerial photos or satellite data that combine the accuracy of a topographic map with the richer contextual information of a photograph.

Until recently, geospatial technologies have benefited the rural poor mostly indirectly, by generating improved information for research, policy analysis, planning, and monitoring. Precision farming techniques are used in high-intensity commercial agriculture, where detailed location information determines, for example, the level of fertilizer applied to each portion of a field. However, the capital, maintenance, and training requirements are well beyond the means of most farmers in developing countries, particularly smallholders whose small field sizes make these technologies uneconomic.

One of the most direct applications of GIS in developing countries is participatory mapping, where, for example, specialists interact with farming communities to create spatial inventories of natural resources, property status, land-use rights, and perceived problems. Such inventories feed into a consultative process aimed at building consensus on more equitable and sustainable resource-management arrangements. Community mapping can also help foster the process of transferring greater decision-making power and fiscal responsibility to local levels of government. GIS is increasingly being used widely in parcel mapping. Without proper land registration, it can be argued that formal land markets are less efficient and the incentives to invest in land conservation might be limited.

Questions can arise about the political economy and sustainability of GIS approaches applied at the community level, and research on those issues has given rise to a literature on Public Participation GIS (PPGIS). Research primarily addresses concerns about GIS as an invasive technology that benefits a few elites and institutions while marginalizing the very people it’s supposed to help. While this work has often focused on developed-country experiences, its concerns are even more pertinent to poor communities in developing countries. PPGIS issues include:

  • Changes in local politics and power relationships resulting from the use of GIS in geospatial decision-making.
  • The effects of differential access to GIS hardware, software, data, and expertise
  • The educational, social, political, and economic reasons for lack of access and exemplary ways in which communities have overcome these barriers
  • The ways in which socially differentiated communities and their local knowledge might best be represented within GIS
  • GIS as local surveillance
  • Identifying public data policies that positively or negatively influence small-scale local businesses.

Geographic information technologies will continue to provide considerable indirect benefits through better-informed policymaking, research, planning, and development support by both government and non-government agents. But we need to continually reexamine the direct benefits.

Take for example, the “2020 Vision for Food, Agriculture, and the Environment“. This is an initiative of the International Food Policy Research Institute (IFPRI) to develop a shared vision and a consensus for action on how to meet future world food needs while reducing poverty and protecting the environment. Through the 2020 Vision initiative, IFPRI is bringing together divergent schools of thought on these issues, generating research, and identifying recommendations. In an initiative such as this, GIS can be used extensively to identify and model any aspect that is spatially distributed, for example, mapping gender assets, tracking movement of food from rural to urban areas, conducting site selections of optimal farming locations by crop, modeling equitable water allocation, and possibly applying precision agriculture.

IFPRI promotes a vision for food access for the greatest good, that assists the poor while not irreparably hurting the environment. But who might get left out in a consensual “greatest good” vision? Women’s subsistence farming but not men’s cash crop farming? Women in these developing countries often have their own local knowledge about food production that differs from men. What if the communities themselves want to map and analyze: do they have the access to the satellite images and computers? Communities may have their own alternate or small scale means of producing food that varies from getting out food to the largest number of peoples. Technologies have been developed like Google Earth and have been used by indigenous people to monitor illegal activities on their land, for example logging. What happens after the experts leave? It’s these things that we need to reflect on when we promote GIS for rural development.

Peter A. K. Kyem, James Saku. 2009. Web-Based GIS and the Future of Participatory GIS Applications Within Local and Indigenous Communities. GISP Department of Geography Central Connecticut State University New Britain, USA. EJISDC Vol. 38.

Daniel Weiner, Trevor M. Harris. 2003. Community-Integrated GIS for Land Reform in South Africa. URISA Journal, Vol. 15.

Renee Sieber. 2006. Public Participation GIS: A Literature Review and Framework. Annals of the Association of American Geographers. Volume 96, Number 3 , pp. 491-507.

the green computer

Friday, February 12th, 2010

We can only hope that the toxin-free PCs are as advertised:

IT and business transformation services company Wipro Infotech is the first Indian company to build a 100% recyclable and toxin-free computer. Wipro joins a small number of manufacturers worldwide to develop toxics-free electronics.

The eco-friendly Wipro Greenware desktops are manufactured to be completely free from harmful chemicals such as polyvinyl chloride (PVC) and brominated flame retardants (BFRs).

The challenge, of course, is to ensure that, once its lifespan is done, there is a reputable place to recycle the Wipro.