Thuja sutchuenensis Franch. is a critically endangered plant endemic to the North-East Chongqing, China. Genetic variation was studied to assess the distribution of genetic diversity within and among seven populations from the single remnant locations, using inter-simple sequence repeat (ISSR) markers. A total of 15 primers generated 310 well defined bands, with an average of 20.7 bands per primer. The seven populations revealed a relatively high level of genetic diversity in the species. The percentage of polymorphic bands, Nei’s gene diversity and Shannon’s information index at the population and species level were 76.1%, 0.155, 0.252 and 100%, 0.165, 0.295, respectively. A low level of genetic differentiation among populations (G_ST = 0.102), in line with the results of Analyses of Molecular Variance (AMOVA), and a high level of gene flow (N_m = 4.407) were observed. Both the Unweighted Pair Group Method with Arithmatic Mean (UPGMA) cluster analysis and Principal Coordinates Analysis (PCoA) supported the grouping of all seven populations into two groups. In addition, Mantel test revealed no significant correlation between genetic and geographical distances (r = 0.329, p = 0.100). The low genetic differentiation among populations implies that the conservation efforts should aim to preserve all the extant populations of this endangered species.

National parks are important natural reserves of high ecological value, and the visual perception of national park landscapes is closely tied to the degree of protection that the natural resources within national parks receive. Visual cognition has a direct impact on public consciousness and plays an increasingly important role in national park management. Most techniques and methods previously used to study visual behaviors are subjective and qualitative; objective and quantitative studies are rare. Here, we used the eye-tracking method to study the visual behaviors of individuals viewing landscapes within the Qianjiangyuan National Park System Pilot Area to assess the visual and psychological mechanisms underlying public perception of different landscapes. The effect of landscape type on visual behaviors was greater than that of color diversity and degree of spatial confinement and was mainly related to the characteristics of landscape elements. The public preferred recreational and forest landscapes with high ornamental value, whereas rural and wetland landscapes tended to be neglected given that perception of these landscapes required additional information to facilitate interpretation. When landscape colors were uniform and landscape spaces were more confined, the fixation duration was longer, and instant attractiveness was stronger. The effects of subject background on behavioral preferences were examined. Females were more interested in the whole landscape, whereas males focused more on the parts of the landscapes with prominent humanistic architectural features, complex colors, and open space. Art students generally preferred landscapes with strong humanistic attributes, whereas students majoring in forestry preferred landscapes with strong natural attributes.

The development of China’s national parks is still in the initial stage, and few scholars have studied the effects of soundscapes on human physiology and psychology from the perspective of the auditory senses in national parks. In this study, the Qianjiangyuan National Park System Pilot Area was taken as the research subject, physiological indicators of subjects were collected through a biopAC-MP150 multi-channel physiological instrument data platform, and the subjective psychological response of soundscapes was measured using a Likert scale. The results showed that the sound of water had the most significant effect on the heart rate and respiratory rate of the subjects. Agricultural sound had the greatest impact on the skin conduction levels, while conversation had the least overall impact on human physiology. There were significant differences in comfort, excitement, and significance among the different soundscapes (p < 0.001). The sounds of insects are more likely to elicit feelings of comfort and excitement, while the sounds of birds are more likely to arouse curiosity. No significant correlation was observed between the physiological indices and psychological indices. The study on the effects of different soundscapes on human physiology and psychology in China’s national parks will provide a basis for the decision makers of national parks to formulate more effective planning, design, and management policies regarding soundscapes.

With the progress of science and technology, humans’ ability to transform and create has been greatly enhanced, but so have the physical and mental ailments associated with environmental degradation and urbanization. Human survival and health are strongly linked to nature, and there is growing evidence that exposure to nature promotes health and well-being. However, there is currently a lack of synthesis among empirical studies on these aspects for the findings to be sufficient for informing public health strategies and social policy. Here, following basic guidelines for systematic review and meta-analysis, we searched PubMed, Web of Science, ScienceDirect, and Scopus databases in January 2023. The results of our search and analysis show that nature can improve people’s health and well-being from two aspects: physical (reduces CVDs, increases immunity, improves autonomic nervous system function, and improves sleep quality) and psychological (restores attention, improves mood, reduces stress, and improves cognitive development). The ways in which people derive health from nature are varied, and tailored, personalized, symptom-specific exposure can further increase the health benefits. More importantly, it seems that people can gain the health benefits of nature by only being exposed to it for a short time. We incorporate the existing scientific evidence in our review and develop a new heuristic point of view on the necessity of exposure to natural environments for the health of individuals.

Soundscape perception is a very weak link in the national park landscape evaluation system in China. A thorough understanding of soundscapes and their effects on visual aesthetics is important for the management of national park landscapes. In this study, features of soundscapes (e.g., loudness, frequency, preference, and auditory satisfaction) were investigated based on 394 valid questionnaires of residents in the Qianjiangyuan National Park Pilot Area. The effects of soundscape on visual aesthetics were analyzed using the PLS-SEM. The results demonstrated that: (1) Peddling voice and insect sound were the loudest components in the soundscape, running water and birdsong were the most commonly heard and most preferred, religious sound was the quietest and least frequently heard, and horn was the least preferred. Residents in the Pilot Area were generally satisfied with the auditory environment. (2) Both sound frequency and preference have significant effects on auditory satisfaction, but preference (path coefficient = 0.426) has a larger effect than does frequency (path coefficient = 0.228). (3) Loudness has negligible effects on visual aesthetics, but other soundscape characteristics did influence visual aesthetics. Soundscape preference had the most significant effect (path coefficient = 0.305), followed by auditory satisfaction (path coefficient = 0.174), and sound frequency (path coefficient = 0.165). Among them, effects of perception frequency are the indirect utilities.