Relationship of Ecosystem Services in the Beijing–Tianjin–Hebei Region Based on the Production Possibility Frontier

The supply and demand of ecosystem services are affected by land use. Only a few studies have conducted in-depth quantitative analyses. This study adopted the Beijing–Tianjin–Hebei region as the research area. The CLUMondo model was adopted to infer the land-use pattern under protection, development, and natural scenarios in 2035. Moreover, the InVEST model was utilized to evaluate carbon sequestration, water yield, and soil conservation under multiple land-use patterns. The production possibility frontier was drawn to visualize the trade-off relationship further. The trade-off intensity index was calculated to quantify the magnitude of the trade-off. (1) Under the development scenario, the accelerated expansion of urbanized land will occupy a large amount of arable and forest land, which should be planned and controlled. (2) The trade-off and synergistic relationships could be transformed under the different land-use scenarios. (3) The production possibility frontier curve for each ecosystem service trade-off and the optimal value of the trade-off configuration were plotted for the different scenarios. The trade-off intensity of ecosystem services was also calculated. This study combined ecosystem services with land-use regulations and revealed the link between ecosystem services and regional land-use pattern change. The aim is to provide a reference for the synergistic progress of the ecological economy in the Beijing–Tianjin–Hebei region.

Development of the digital economy and its impact on labour market

The article considers the effects of technology on the level and composition of employment. Technological progress, by increasing the productivity of factors of production, expands an economy’s production possibility frontier but also decreases the number of existing workplaces. So the aim of the paper to consider the opportunities to the positive impact of the ICT on the labour market.

Comparative Analysis of Production Possibility Frontier in Measuring Social Efficiency with Data Envelopment Analysis: An Application to Airports

The environmental sustainability is a globally important issue, particularly in the global warming. There are many institutions and people who are interested in the greenhouse gases emissions issue and policies that attempt to improve the problem. The aviation industry is not an exception. Under this background, there has been much research on airport efficiency analysis, undesirable outputs, and on evaluating productivity with respect to environmental factors. In the efficiency analysis models with the undesirable outputs in the airports, there are two main types of production possibility frontiers. The first type is the frontier based on the Shephard technology, which involves a weak-disposability concept, using a single abatement factor. The second one is the frontier on the Lozano-Gutiérrez technology, which tries to take the weak disposability into account by regarding the undesirable outputs as input. However, they have limitations. Additionally, no study has provided how to apply weak disposability correctly. To find out the limitations and give standard to utilize weak disposability, we compare models with two issues that must be scrutinized. In this paper, we show that these two concepts have limitations in making the production possibility area. To overcome this limitation, we propose an undesirable-output model using multiple abatement factors based on weak disposability with the slack-based measure (SBM) approach. We analyze, comparatively, the different social efficiency performances according to two issues among the three approaches in estimating production possibility frontier, using the Shepard model, the Lozano-Gutierrez model, and our proposed model. To provide correct standard of measurement and apply characteristics of undesirable outputs, we study not only theoretically, but also empirically, with data from Korea’s 13 domestic airports.

Production Possibility Frontier & its Relation to Other Costs

A production–possibility frontier (PPF) or production possibility curve (PPC) is a curve which shows various combinations of set of two goods which can be produced with the given resources and technology where the given resources are fully and efficiently utilized per unit time. One good can only be produced by diverting resources from other goods, and so by producing less of them. This tradeoff is usually considered for an economy, but also applies to each individual, household, and economic organization.

Leisure and the Production Possibility Frontier: A Two-Step Pedagogy

The production possibility frontier (PPF) is a workhorse of economics principles texts, providing useful insights. However, its assumption of a given amount of labor can confuse students, who know that their willingness to supply labor is a variable, not given. That is, some will realize that there are actually many potential guns-butter trade-offs, one for each level of leisure chosen. That unexamined issue can undermine student buy-in to the concepts, and with it, the usefulness of the PPF and economic tools related to it and its “fixed amount of resources” assumption, such as the supply curves of microeconomics and the long-run aggregate supply curve of macroeconomics. However, that difficulty can be addressed using a two-step PPF presentation, which considers the simultaneous goods-leisure decision and the guns-butter possibilities consistent with it. It clarifies the analysis, as well as offering several benefits for economic instruction. JEL Classifications: A20, A22