Natural soundscapes have beneficial effects on the perceived restorativeness of an environment. This study examines the effect of birdsong, a common natural soundscape, on perceived restorativeness in Harbin Sun Island Park in China. Eight sites were selected and a series of questionnaire surveys on perceived restorativeness soundscape scale (PRSS) of four birdsong types were conducted during summer and winter. Two-hundred and forty respondents participated in this survey. Analysis of the survey results shows that different types of birdsong have different perceived restorativeness effects in different seasons. Crow birdsong has the worst effect on the perceived restorativeness in both summer and winter. Moreover, sound comfort and preference are significantly associated with the perceived restorativeness. The perceived restorativeness soundscape is best when birdsong is at a height of 4 m rather than 0.5 m or 2 m. The demographic/social factors of age, education, and stress level are all correlated with perceived restorativeness. There are suggestions for urban park design, especially with constructed natural elements. Creating a suitable habitat for multiple species of birds will improve perceived restorativeness. Moreover, appropriate activities should be provided in city parks to ensure restorativeness environments, especially for subjects with high levels of education and stress.
Green spaces in cities and urban parks serve as central areas for mental restoration and relieving pressure, and attention to soundscapes for their mental health benefits has become more prevalent. Birdsongs are perceived to enhance the restorative benefits of urban parks. This study examines Harbin Sun Island Park, the main bird habitat in the city of Harbin with numerous types of landscapes. We used space syntax to select the appropriate path space as a carrier and the pixel grid method to quantify path space shapes. A correlation analysis of field data was also used to explore the perceived restorative effects of birdsongs heard in urban parks using scales detailing the perceived restorative effects of various visual and auditory stimuli. The results show that soundscapes can significantly improve perceived recovery benefits, and that hearing birdsongs can significantly improve the perceived restorative benefits of wetland paths; the sky index of a tour path showed a significantly negative correlation with each feature (i.e., the four featured dimensions of “charm”, “escape”, “ductility” and “compatibility” included in the recovery scale), and the soft/hard ratio showed a significantly negative correlation with each studied feature. When the sky index ranged from 13–36%, tree coverage of the vertical coverage range was 30.28–38.6%, and when the soft/hard ratio ranged from 5–21, the perceived recovery benefit was strongest.
Background: Cryptosporidium is a protozoan parasite causing diarrhoea in humans and animals. Although Cryptosporidium has been found in domestic horses (farmed or kept at pasture), there has been only one published study of Cryptosporidium infections in Chinese racehorses, which was restricted to a very small geographical area.Objectives: To investigate the presence of Cryptosporidium spp. in the faeces of racehorses in China and to perform molecular characterisation of the parasite. Study design: Cross-sectional. Methods: A total of 621 fresh faecal samples were collected for DNA extraction from racehorses at 17 equestrian clubs from 12 provinces of China from December 2016 to May 2018. All the DNA were analysed for the presence of Cryptosporidium species/genotypes and subtypes by PCR amplification of the small subunit ribosomal RNA and 60 kDa glycoprotein genes respectively.Results: PCR analysis revealed that 11 samples (1.8%) were positive for Cryptosporidium spp. Among them seven samples were identified as C. parvum and four were C. hominis.The C. parvum isolates were identified as subtype IIdA14G1 (n = 4) and IIdA15G1(n = 3), while all C. hominis isolates were identified as subtype IkA18G1 (n = 4).Main limitations: A single faecal sample from each horse was used instead of multiple samples that could improve the detection rates of the parasite.Conclusions: Although Cryptosporidium infection rate was relatively low in the investigated racehorses, the presence of zoonotic subtypes IIdA14G and 1IIdA15G1 of C. parvum and IkA18G1 of C. hominis, suggesting that these animals are a potential source of Cryptosporidium in humans.
There are similarities and differences between open public space soundscape evaluation in different countries, mainly due to the influence of cultural background. This paper systematically compares the effect of social-cultural context on soundscape of urban public open spaces in China and Croatia. Eleven well-known and typical squares were selected. A series of questionnaire surveys within the soundscape framework were carried out during the summer season, and gathered data were analyzed. Principal component analysis (PCA) resulted in two principal components, eventfulness and pleasantness, as notable soundscape factors. However, eventfulness is the major factor in China, and pleasantness is the major factor in Croatia. In terms of environmental satisfaction, natural condition is the major factor based on PCA. Urban condition is the second factor in China, however, it is the third factor in Croatia. It is interesting to note that the physical environment is the most important factor in Croatian inland and coastal places, which is different compared to Chinese places. Visit purpose is the dominant factor associated with sound and environmental satisfaction. Natural sound and children have mainly positive correlations to sound and environmental satisfaction in China, whereas sounds of human activities have mainly negative correlations to sound and environmental satisfaction in Croatia.
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