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Electric vehicles (EV) are considered an option for reducing the transport sector's environmental impacts. Motivated by environmental concerns, governments are formulating policies for the promotion of EV. However, the EV transition has more than environmental benefits; it also has economic and social impacts that are usually not considered. Understanding the effects of the transition to EV on sustainability has become increasingly important in the appropriate public policies formulation and evaluation. This article presents a system dynamics model representing the Colombian EV market and the relationships between the market dynamics and sustainability. This model is used to understand the synergistic effects between the Colombian-market dynamics and sustainability system. The results show that the synergies between market dynamics and sustainability are important. Neglecting them would result in different behaviours from those exhibited in real life and overestimating performance measures. Therefore, the effects of policies that promote EVs would be inadequate if synergies are not considered. This approach is a first step towards improving the understanding of sustainable transport impacts from a holistic perspective and can formulate more robust policies. • System dynamics model broadens understanding of EV market and sustainability feedbacks • Synergistic and constant growth model of the system are compared • Analysis of extreme market scenarios to capture maximum impacts on sustainability • Synergies assessment between Colombian EV market dynamics and sustainability • Constant growth model fails to represent dynamics between sustainability and market [ABSTRACT FROM AUTHOR]

Nitrogen (N) stabilizers such as urease inhibitors (UI) and nitrification inhibitors (NI) are promising tools to mitigate N losses from fertilized soils. To better understand the efficacy of UI and NI, a 2-year field trial was carried out in the North China Plain (NCP) to analyze the impact of UI and NI on NH 3 loss and N transformations following urea fertilizer application. Additionally, a laboratory study using an automated continuous-flow incubation system was conducted under controlled conditions, using the same soil, to evaluate the mitigation potential of the N stabilizers on NO, N 2 O and CO 2 emission. The results showed that a novel UI product, Limus® (BASF, Germany), containing active ingredients N-(n-butyl) thiophosphoric triamide (NBPT) and N-(n-propyl) thiophosphoric triamide (NPPT), limited ammonium formation rate and reduced NH 3 loss in both maize (by 85 and 96% for year 1 and 2, respectively) and wheat (by 41 and 64%, for year 1 and 2, respectively) seasons. The 3, 4-dimethypyrazole phosphate (DMPP) amendment significantly retarded nitrate formation rate but the effectiveness was compromised by high ambient temperature; additionally, the NI amendment increased NH 3 emission (by 16 and 24% for maize and wheat year 2, respectively). In the laboratory incubation experiment, addition of the UI reduced emissions of NO, N 2 O and CO 2 by 89, 73 and 19%, respectively, while the addition of the NI reduced the respective emissions by 95, 83 and 24% over the 16 d incubation period. These results suggest that N stabilizers can play a significant role in the mitigation of the environmental impacts of intensive agriculture, and, in particular, that the UI amendment may have the better potential to reduce N losses in the climatic and soil conditions of the NCP, and that the NI should be avoided under high ambient temperatures. Image 1 • Urease inhibitor amendment of urea reduced NH 3 , NO and N 2 O emissions. • Nitrification inhibitor amendment of urea reduced NO and N 2 O but increased NH 3 emissions. • Efficacy of the nitrification inhibitor was compromised by high ambient temperature. • Urease and nitrification inhibitor amendment of urea reduced CO 2 emissions. [ABSTRACT FROM AUTHOR]