Over the past five years, the pilot establishment of national parks in China has been a major event in global biodiversity conservation. The national parks under construction and proposed account for nearly 1% of the land area, and their social impacts have attracted the attention of researchers and managers. However, most of the research has a focus on the effects of protection, and national parks do not have a sufficient understanding of the social impacts and perceptions of the local residents. This research, taking Nanling National Park in Guangdong Province as the case, used the social impact assessment research framework to explore the perceptions and support of local people for the creation of national parks. Through questionnaires and in-depth interviews, the findings were first that most residents expressed a low awareness of Nanling National Park’s development, but they still expressed conditional support. Second, ethnic minorities and less educated residents did not support the creation of national parks. Perceptions of ecological, economic, political, and cultural impacts affected whether residents supported the construction of national parks. In the initial stages of national park development, governmental administrative departments should reduce the negative impacts of national park construction by strengthening the publicity and awareness building, formulating appropriate policy guidance for different needs, and giving local residents the right to express their views, so as to enhance resident support for national park projects.

To explore the seismic performance of RC bridge columns subjected to combined stresses of compression, bending, shear, and torsion, reversed cyclic tests with eight column specimens were performed in the laboratory. Finite-element analysis (FEA) was used to evaluate the strains of the steel bars in columns and to carry out the parametric analysis. It was found that the coupling effect of bending and torsion was significant. Bending hysteresis loops were fuller than torsional hysteresis loops. Different torsion-to-bending ratios resulted in different bending or torsional failure modes. The plastic hinge length increased with an increase in the torsional effect. With an increase of the torsion-to-bending ratio, the flexural capacity was not fully used, but the torsional capacity, torsional stiffness, and torsional energy dissipation increased. With a decrease in column height, the flexural capacity, flexural stiffness, and flexural energy dissipation increased; however, the lateral deformation decreased, and the torsional capacity showed little change. When the longitudinal reinforcement ratio was increased, although the bending performance was enhanced, the torsional performance showed no significant change. An increase in the stirrup ratio improved torsional performance but not bending performance. Strains of longitudinal rebars and stirrups in the plastic hinge area increased greatly after steel yielding. The length of the torsional plastic hinge increased and the position of the plastic hinge moved upward when columns showed the torsional failure mode. The relationship between maximum torque and maximum shear force under different torsion-to-bending ratios is discussed.

The SARS-CoV-2 virus first emerged in late 2019 and has since spread quickly throughout China and become a global pandemic. As the situation with COVID-19 has evolved, wearing a face mask in public has grown commonplace. Using the technology acceptance model (TAM) as a foundation, this study introduces three new variables, namely, perceived risk, social pressure, and social image, to establish an extended model for investigating the factors that influence if residents wear masks. A total of 1200 questionnaires were distributed in China, from 1 February to 30 May 2020, through China’s largest online platform. The results indicate the following: 1. Residents’ positive attitude towards mask wearing promotes their behavioral intention to wear masks. 2. Perceived risk, social pressure, and social image have a positive impact on attitude towards mask wearing. 3. The intention to wear masks and attitude were both positively influenced by perceived usefulness. 4. The perceived usefulness is more influential in rural than urban groups, in terms of behavioral intention. This article proposes that public education on the facts related to the coronavirus, the threats posed by the COVID-19 pandemic to health, and the usefulness of face masks in preventing the transmission of COVID-19 could increase residents’ intention to wear a mask.

Promoting greener and sustainable development is one of the main goals of the most recent 14th Five-Year Plan (i.e., 2021–2025). Environmental regulation is seen as fundamental to green transformation and an important way for all of China to reach a high-quality and sustainable development mode. However, large spatial disparities exist across the different regions in China, so formulating region-oriented environmental regulatory policies to achieve regional high-quality and sustainable development is now a matter of great practical significance. In the present paper, we analyze this problem and begin by calculating the high development level measured through the Green Total Factor Productivity (GTFP) of 259 Chinese cities. Thereafter we construct a comprehensive index of environmental regulation through the linear weighted-sum method. Lastly, we investigate the spatiotemporal heterogeneity of the impact of environmental regulation on GTFP using a Geographically and Temporally Weighted Regression (GTWR) model. We find that: (1) From the spatial dimension perspective, the impact of environmental regulation of Chinese cities on GTFP is either linear (monotonically increasing or decreasing), non-linear (U-shaped or inverted U-shaped), or nonsignificant. Most cities have a U-shaped relationship, indicating that environmental regulation first inhibits GTFP at the early stage, but then promotes it. There are also significant differences among cities in the turning points of environmental regulation; (2) From the time dimension perspective, the number of cities is on the rise having monotonically decreasing impacts of environmental regulation on GTFP. Furthermore, even for the same city, the relationship between the two variables shows different characteristics in different years; (3) The impact of five control variables on GTFP may also vary from one city to another over the sample period, also presenting spatiotemporal heterogeneity effects. Consequently, the formulation and implementation of environmental regulatory policies should not only adapt to local conditions but also choose reasonable and effective measures to achieve high-quality development targets.