The Sustainable Development Goals and the World Health Organization have prioritized senior mental health as an important goal. Senior mental health is a critical issue within the global public health sphere. Notably, green spaces are a useful alternative for improving senior mental health. Many studies have focused on green space and senior mental health, especially on their connection and relationship. However, this research topic lacks a comprehensive and systematic review. Owing to the lack of critical reviews, this study clarified the trend, progress, status, and focus of studies on green spaces and senior mental health using bibliometric analysis of literature within the Web of Science database. The literature analysis within this study specifically focused on the following, including the country/region contribution analysis, institution contribution analysis, keyword analysis, and highly productive journal analysis. Furthermore, this study systematically recorded the content of green space and senior mental health, identified the gap that exists, and provided future frontier directions or issues for research. These contribute toward comprehending the progress and content of this research topic and further provide a guide, reference, and inspiration for possible future research.

After the agreements of the Conference of the Parties, more and more countries announced plans to achieve net zero emissions over the coming decades and published new policies in response to the agreements. Public awareness is a crucial factor in achieving the goals of the agreements. Therefore, the study of public awareness/behavior toward the low-carbon transition is important. However, this topic lacks a comprehensive and systematic review. Thus, this study used bibliometric analysis, including performance analysis and scientific mapping analysis, to reveal research trends and clarify the status of studies in low-carbon transition and public awareness. We found that 95% of the literature on this topic was published from 2011 to 2022. Judging from keywords, the hotspots of this topic are “Sustainability”, “Energy Transition”, “Low-carbon Economy”, and “Carbon Emission Reduction”. Regarding the research field transition for this topic, environmental sciences have always been a core subject. Furthermore, economics, management, political science, and sociology have focused on this topic in recent years. Additionally, there are gaps between low-carbon policy and public awareness/behavior. Therefore, the frontier directions of low-carbon transition and public awareness include “low-carbon education”, “policies with specific guidelines”, and “worldwide collaboration”.

Disturbance of urban and regional nitrogen cycles due to urbanization have resulted in the greenhouse effect, acid rain, eutrophication, and reductions in biodiversity

Since the declaration of the Sustainable Development Goals (SDGs) by 2030, an increasing number of countries have announced plans to achieve goals such as clean water and sanitation. Pharmaceutical wastewater is a problem in wastewater treatment. Methods to improve the outcomes of wastewater emissions and prevent health problems are required. Therefore, studies regarding pharmaceutical wastewater and its effects on health are crucial. However, comprehensive systematic reviews on this topic are lacking. Thus, in the present study, we utilized bibliometric analysis, incorporating performance analysis and scientific mapping, to identify emerging research trends and provide an overview of the current landscape of studies in this field. Our study will help clarify the advancements and key areas of focus in this research topic and inspire future research.