The ethics of Google Earth: crossing thresholds from spatial data to landscape visualisation

‘Virtual globe’ software systems such as Google Earth are growing rapidly in popularity as a way to visualise and share 3D environmental data. Scientists and environmental professionals, many of whom are new to 3D modeling and visual communications, are beginning routinely to use such techniques in their work. While the appeal of these techniques is evident, with unprecedented opportunities for public access to data and collaborative engagement over the web, are there nonetheless risks in their widespread usage when applied in areas of the public interest such as planning and policy-making?     

Indicators of perceived naturalness as drivers of landscape preference

The concept of naturalness is one of the more studied concepts in landscape preference research and describes how close a landscape is to a perceived natural state. In this study we explored the relationship between landscape preference and three landscape indicators of naturalness (level of succession, number of woodland patches and shape index of edges). We used computer-generated visualisations of a hypothetical landscape containing pasture and broadleaved woodland. In the landscape simulations we altered the values of the naturalness indicators between the levels of low, medium and high, creating 27 different visualisations. The survey was distributed as an on-line survey in seven different languages and obtained 703 respondents. The study showed a strong relationship with preference for both the level of succession and number of woodland patches, and a weaker relationship with shape index of edges. The two demographic factors which were shown to contribute most to the formation of preference were gender and having a landscape related profession. The results suggest that the selected indicators are more important drivers of preference than demographic factors.     

Landscape visualisation and climate change: the potential for influencing perceptions and behaviour

The urgent need to mitigate and adapt to climate change is becoming more widely understood in scientific and policy circles, but public awareness lags behind. The potential of visual communication to accelerate social learning and motivate implementation of the substantial policy, technological, and life-style changes needed, has begun to be recognised. In particular, realistic landscape visualisations may offer special advantages in rapidly advancing peoples’ awareness of climate change and possibly affecting behaviour and policy, by bringing certain possible consequences of climate change home to people in a compelling manner. However, few such applications are yet in use, the theoretical basis for the effectiveness of visualisations in this role has not been clearly established, and there are ethical concerns elicited by adopting a persuasive approach which deliberately engages the emotions with visual imagery. These questions and policy implications are discussed in the context of a theoretical framework on the effects of landscape visualisation on a spectrum of responses to climate change information, drawing in part on evidence from other applications of landscape visualisation. The author concludes that the persuasive use of visualisations, together with other approaches, may be effective, is justified, and could be vital in helping communicate climate change effectively, given ethical standards based on disclosure, drama, and defensibility.