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Two field studies revealed large differences among various subgroups in the population of car drivers. Private drivers, commuters, and business drivers differed strongly with respect to current decisions and behaviour which affect CO2 emissions, and with respect to their sensitivity to various policy instruments. Several promising policy targets were identified" combinations of user groups and behaviours where substantial CO2 reduction may be achieved. The sensitivity of different car user groups to various policy measures showed whether and how desired behavioral changes may be realised.
Many people believe that 'sustainable solutions' to global air pollution and climate change should include significant changes in human consumption and lifestyles. Under this heading six different NRP projects have been conducted. This chapter gives a review and assessment of these projects, supplemented with discussions of related research. The paper starts with a general statement of the environmental problem of household metabolism as a key component of the socio-economic production- consumption cycle. It summarises and comments upon nine different (sub)projects. And it ends with general observations, conclusions and suggestions for research and policy in relation to sustainable consumption patterns. Conceptual...
The possible impacts of a climatic change associated with an increase in CO2 on the hydrology of forests is evaluated by applying sensitivity analysis and a climatic scenario to a one-dimensional model. Water consumption of forests is affected by changes in plant physiology and meteorological environment. Changes in species composition are not taken into account. Increase in CO2 leads to a decrease of stomatal conductance, resulting in a decrease in transpiration of 10-30%. The evaporation of rainfall interception by the canopy is increased due to a higher leaf area index and higher temperatures. Application of a wet scenario shows an increase in total interception, but the ratio between interception and precipitation...