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1.
The close link between scientific knowledge, learning, and beliefs is particularly relevant in environmental policymaking and the interaction of environmental with economic development‐focused policies. This article contributes to a more refined understanding of the links among scientific knowledge, belief changes, and the move from a collaborative to an adversarial policy subsystem within the Advocacy Coalition Framework. It analyzes the process of drafting and negotiating the biofuels aspects of the European Renewable Energy Directive, which was dominated by political disagreements between two advocacy coalitions. Their initial agreement on increasing the share of renewable energies in transport turned into conflict after new scientific evidence emerged on the negative environmental and climate change impacts of crop‐based biofuels. The environmental coalition changed its empirical policy beliefs to reflect normative policy beliefs on environmental protection. This change in empirical policy beliefs uncovered a pre‐existing conflict with the normative policy beliefs of the economic development‐focused coalition. As a consequence, the collaborative policy subsystem shifted to an adversarial policy subsystem.  相似文献   

2.
Studies of historical change in cultivated land use in Northeast China have become important in the discussion of food supply safety and the reconstruction of land use/cover changes in China. This paper subjects a number of sources relating to land use change in the three provinces of Northeast China to comparative analysis. The data examined include Russian survey data (1914), data from local and regional Chinese governments during the Republic of China (1931), data from the Japanese Society of Manchuria Railway (SMR) for 1940 and various sets of contemporary Chinese data for the second half of the 20th century. A unified method of reconstructing the data and estimating the rate of cultivated land use change in Northeast China during the 20th century is developed here. A relational model is proposed for this purpose. It establishes a general framework for relating the various sets of data generated in different time periods and indicates ways in which the data have to be calibrated to ensure their comparability. The calibration of the data involves correlation and regression analysis. The results of the comparative analysis show that the area of and rate of change in cultivated land use in Northeast China increased until the last decade of the twentieth century. Increase rates were particularly high between 1914–1931 and 1950–1960.  相似文献   

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