By using the methods of literature review,questionnaire survey,and expert interview,this paper discusses and analyzes the deep integration mechanism of national fitness campaign and college physical education teaching...By using the methods of literature review,questionnaire survey,and expert interview,this paper discusses and analyzes the deep integration mechanism of national fitness campaign and college physical education teaching,in order to promote the development of college physical education teaching reform,expand ideas,explore new fields,and provide novel development directions.The purpose is to enhance the national physical quality,improve the public service system,enhance the health awareness of the citizens,and provide guidelines for promoting the development of sports.展开更多
By the end of 2021,the proportion of people participating in normalized physical exercise in China has reached up to 37.2%,contributing to the transformation of competitive sports into national sports.This has signifi...By the end of 2021,the proportion of people participating in normalized physical exercise in China has reached up to 37.2%,contributing to the transformation of competitive sports into national sports.This has significantly affected the teaching quality of physical education in primary and secondary schools.In the critical period of the“14th Five-Year Plan”construction,it is necessary to deepen the physical education work in primary and secondary schools concertedly with high-quality development goals.Taking this as the starting point,the paper outlines the basic content and main influence of national sports as well as analyzes the new demands of physical education in primary and secondary schools under the background of national sports.On this basis,several targeted teaching strategies are put forward from three aspects:teaching concept,information technology,and teaching goals.展开更多
Large oilfields are often coincidentally located in major river deltas and wetlands,and potentially damage the structure,function and ecosystem service values of wetlands during oil exploration.In the present study,th...Large oilfields are often coincidentally located in major river deltas and wetlands,and potentially damage the structure,function and ecosystem service values of wetlands during oil exploration.In the present study,the effects of crude oil contamination during oil exploration on soil physical and chemical properties were investigated in marshes of the Momoge National Nature Reserve in Jilin Province,China.The concentrations of total petroleum hydrocarbons in the marsh soil near the oil wells are significantly higher than those in the adjacent control marsh.Soil water contents in oil-contaminated marshes are negatively correlated with soil temperature and are significantly lower than those in the control area,especially in fall.Crude oil contamination significantly increases the soil pH up to8.0,and reduces available phosphorus concentrations in the soil.The concentrations of total organic carbon are significantly different among sampling sites.Therefore,crude oil contamination could potentially alkalinize marsh soils,adversely affect soil fertility and physical properties,and cause deterioration of the marshes in the Momoge National Nature Reserve.Phyto-remediation by planting Calamagrostis angustifolia has the potential to simultaneously restore and remediate the petroleum hydrocarbon-contaminated wetlands.Crude oil contamination affects the soil physical and chemical properties,so developing an effective restoration program in the Momoge wetland is neccesary.展开更多
Glacier recession is a globally occurring trend. Although a rich body of work has documented glacial response to climate warming, few studies have assessed vegetation cover change in recently deglaciated areas, especi...Glacier recession is a globally occurring trend. Although a rich body of work has documented glacial response to climate warming, few studies have assessed vegetation cover change in recently deglaciated areas, especially using geospatial technologies. Here, vegetation change at two glacier forefronts in Glacier National Park, Montana, U.S.A.was quantified through remote sensing analysis,fieldwork validation, and statistical modeling.Specifically, we assessed the spatial and temporal patterns of landcover change at the two glacier forefronts in Glacier National Park and determined the role of selected biophysical terrain factors(elevation, slope, aspect, solar radiation, flow accumulation, topographic wetness index, and surficial geology) on vegetation change(from nonvegetated to vegetated cover) at the deglaciated areas.Landsat imagery of the study locations in 1991, 2003,and 2015 were classified and validated using visual interpretation. Model results revealed geographic differences in biophysical correlates of vegetation change between the study areas, suggesting that terrain variation is a key factor affecting spatialtemporal patterns of vegetation change. At Jackson Glacier forefront, increases in vegetation over some portion or all of the study period were negatively associated with elevation, slope angle, and consolidated bedrock. At Grinnell Glacier forefront,increases in vegetation associated negatively with elevation and positively with solar radiation.Integrated geospatial and field approaches to the study of vegetation change in recently deglaciated terrain are recommended to understand and monitor processes and patterns of ongoing habitat change in rapidly changing mountain environments.展开更多
Background:Understanding factors influencing adolescents’ sport/exercise participation(S/EP) is vital to developing effective interventions,but currently,evidence from less developed countries is limited.The purpose ...Background:Understanding factors influencing adolescents’ sport/exercise participation(S/EP) is vital to developing effective interventions,but currently,evidence from less developed countries is limited.The purpose of this study was to examine correlates of S/EP across individual,interpersonal,and environmental levels in a nationally representative sample of Thai adolescents.Methods:Data from 4617 Thai adolescents aged 14-17 years old were obtained from recruited schools across Thailand.Data on S/EP(outcome variable),and psychosocial,home,and community environment covariates were collected from individual adolescents using the Thailand Physical Activity Children Survey,Student Questionnaire.School environmental data were collected at the school level using a School Built Environment Audit.Hierarchical regressions taking into account school clustering effects were applied for data analysis.Results:At the individual level,age and body mass index were independently and strongly correlated with S/EP.Adolescents with high preference for physical activity(PA)(odd ratio(OR)=1.71,p <0.001) and at least a moderate level of self-efficacy(OR=1.33,p=0.001) were more likely to have high S/EP.At the interpersonal level,adolescents whose parents joined their sports/exercise at least 1-2 times/week(OR=1.36,p=0.003) received>3 types of parental support(OR=1.43,p=0.005) and who received siblings’(OR=1.26,p=0.004) and friends’(OR=1.99,p <0.001) support had a greater chance of high S/EP.At the environmental level,adolescents’ S/EP was greater when there were at least 3-4 pieces of home sport/exercise equipment(OR=2.77,p=0.003),grass areas at school(OR=1.56,p <0.001),and at least 1-2 PA facilities in the community(OR=1.30,p=0.009).Conclusion:Multiple factors at different levels within an ecological framework influencing Thai adolescents’ S/EP were generally similar to those found in developed countries,despite some differences.For those interested in promoting and supporting Thai adolescents’ engagement in sports/exercise,further exploration of the influence of self-efficacy and attitude toward PA is required at the individual level;parental and peer support at the interpersonal level;and home sport equipment,school grass areas,and neighborhood PA facilities at the environment level.展开更多
The management of forest corridors and related ecology is one of the effective strategies to minimize the adverse effects of forest degradation. It controls the connectivity of inhabitant species and the connection of...The management of forest corridors and related ecology is one of the effective strategies to minimize the adverse effects of forest degradation. It controls the connectivity of inhabitant species and the connection of the isolated patches. This study analyzed spatial and temporal forest physical degradation based on forest cover change and forest fragmentation in the Gishwati-Mukura biological corridor from 1990-2019. Remotely sensed datasets, Geographical Information System (GIS) and FRAGSTATS software were used to analyze the spatial and temporal physical degradation and changes in forest cover. The results indicated that the Gishwati-Mukura corridor experienced massive deforestation where approximately 7617.1 ha (64.22%) of forest cover was completely cleared out, which implies an annual forest loss of 262.6 ha·year<sup>-</sup><sup>1</sup> (2.21%) during 1990-2019. The forest cover transitions patterns and geostatistical analysis indicated that extensive deforestation was associated with intensive agriculture. The results demonstrated that agriculture has dramatically increased from 29.46% in 1990 to 57.22% in 2019, with an annual increase of 1.97%. Since Gishwati-Mukura has changed to National Park (NP), it lacks diversified scientific studies addressing the analysis of the remote and spatial patterns to investigate its physical degradation and landscape dynamics. This research study will serve as remote forest analysis gap-filling and as the cornerstone of numerous other research that will contribute to the improvement of the connectivity assessments along the Gishwati-Mukura corridor and other related ecosystems.展开更多
Traditional national sports are the representatives of traditional Chinese historic culture. With features like strong universality, nationality and involvement, they are deeply loved by the people. And after thousand...Traditional national sports are the representatives of traditional Chinese historic culture. With features like strong universality, nationality and involvement, they are deeply loved by the people. And after thousands of years of development, the constant evolution and precipitation, they have become not only the outstanding distinctive culture but also the spiritual wealth of Chinese nation. National fitness programs are mainly for improving the standards of people＇ s physical and mental health to serve for the enhancement of people＇ s overall quality. Traditional national sports are the fertile soil of the social culture and modem sports, as well as the inexhaustible material of popularizing the national fitness programs. With abundant life interest and great sport leisure, the people-oriented traditional national sports are in line with the national fitness programs.展开更多
基金Guangdong University of Science and Technology 2023 school-level“quality project”“National Fitness Campaign and College Physical Education Deep Integration Mechanism Research”(Project number:GKZLGC2023142)。
文摘By using the methods of literature review,questionnaire survey,and expert interview,this paper discusses and analyzes the deep integration mechanism of national fitness campaign and college physical education teaching,in order to promote the development of college physical education teaching reform,expand ideas,explore new fields,and provide novel development directions.The purpose is to enhance the national physical quality,improve the public service system,enhance the health awareness of the citizens,and provide guidelines for promoting the development of sports.
文摘By the end of 2021,the proportion of people participating in normalized physical exercise in China has reached up to 37.2%,contributing to the transformation of competitive sports into national sports.This has significantly affected the teaching quality of physical education in primary and secondary schools.In the critical period of the“14th Five-Year Plan”construction,it is necessary to deepen the physical education work in primary and secondary schools concertedly with high-quality development goals.Taking this as the starting point,the paper outlines the basic content and main influence of national sports as well as analyzes the new demands of physical education in primary and secondary schools under the background of national sports.On this basis,several targeted teaching strategies are put forward from three aspects:teaching concept,information technology,and teaching goals.
基金Under the auspices of National Natural Science Foundation of China(No.31170476)Chinese Academy of Sciences/State Administration of Foreign Experts Affairs International Partnership Program for Creative Research Teams(No.KZZD-EW-TZ-07)+1 种基金Major Program of Science and Technology of Jilin Province(No.20075014)Fundamental Research Funds for the Central Universities of China(No.11GJHZ002)
文摘Large oilfields are often coincidentally located in major river deltas and wetlands,and potentially damage the structure,function and ecosystem service values of wetlands during oil exploration.In the present study,the effects of crude oil contamination during oil exploration on soil physical and chemical properties were investigated in marshes of the Momoge National Nature Reserve in Jilin Province,China.The concentrations of total petroleum hydrocarbons in the marsh soil near the oil wells are significantly higher than those in the adjacent control marsh.Soil water contents in oil-contaminated marshes are negatively correlated with soil temperature and are significantly lower than those in the control area,especially in fall.Crude oil contamination significantly increases the soil pH up to8.0,and reduces available phosphorus concentrations in the soil.The concentrations of total organic carbon are significantly different among sampling sites.Therefore,crude oil contamination could potentially alkalinize marsh soils,adversely affect soil fertility and physical properties,and cause deterioration of the marshes in the Momoge National Nature Reserve.Phyto-remediation by planting Calamagrostis angustifolia has the potential to simultaneously restore and remediate the petroleum hydrocarbon-contaminated wetlands.Crude oil contamination affects the soil physical and chemical properties,so developing an effective restoration program in the Momoge wetland is neccesary.
基金Financial support was provided by the Virginia Tech, Department of Geography, Sidman P. Poole Endowment
文摘Glacier recession is a globally occurring trend. Although a rich body of work has documented glacial response to climate warming, few studies have assessed vegetation cover change in recently deglaciated areas, especially using geospatial technologies. Here, vegetation change at two glacier forefronts in Glacier National Park, Montana, U.S.A.was quantified through remote sensing analysis,fieldwork validation, and statistical modeling.Specifically, we assessed the spatial and temporal patterns of landcover change at the two glacier forefronts in Glacier National Park and determined the role of selected biophysical terrain factors(elevation, slope, aspect, solar radiation, flow accumulation, topographic wetness index, and surficial geology) on vegetation change(from nonvegetated to vegetated cover) at the deglaciated areas.Landsat imagery of the study locations in 1991, 2003,and 2015 were classified and validated using visual interpretation. Model results revealed geographic differences in biophysical correlates of vegetation change between the study areas, suggesting that terrain variation is a key factor affecting spatialtemporal patterns of vegetation change. At Jackson Glacier forefront, increases in vegetation over some portion or all of the study period were negatively associated with elevation, slope angle, and consolidated bedrock. At Grinnell Glacier forefront,increases in vegetation associated negatively with elevation and positively with solar radiation.Integrated geospatial and field approaches to the study of vegetation change in recently deglaciated terrain are recommended to understand and monitor processes and patterns of ongoing habitat change in rapidly changing mountain environments.
基金the Thai Health Promotion Foundation for research funding。
文摘Background:Understanding factors influencing adolescents’ sport/exercise participation(S/EP) is vital to developing effective interventions,but currently,evidence from less developed countries is limited.The purpose of this study was to examine correlates of S/EP across individual,interpersonal,and environmental levels in a nationally representative sample of Thai adolescents.Methods:Data from 4617 Thai adolescents aged 14-17 years old were obtained from recruited schools across Thailand.Data on S/EP(outcome variable),and psychosocial,home,and community environment covariates were collected from individual adolescents using the Thailand Physical Activity Children Survey,Student Questionnaire.School environmental data were collected at the school level using a School Built Environment Audit.Hierarchical regressions taking into account school clustering effects were applied for data analysis.Results:At the individual level,age and body mass index were independently and strongly correlated with S/EP.Adolescents with high preference for physical activity(PA)(odd ratio(OR)=1.71,p <0.001) and at least a moderate level of self-efficacy(OR=1.33,p=0.001) were more likely to have high S/EP.At the interpersonal level,adolescents whose parents joined their sports/exercise at least 1-2 times/week(OR=1.36,p=0.003) received>3 types of parental support(OR=1.43,p=0.005) and who received siblings’(OR=1.26,p=0.004) and friends’(OR=1.99,p <0.001) support had a greater chance of high S/EP.At the environmental level,adolescents’ S/EP was greater when there were at least 3-4 pieces of home sport/exercise equipment(OR=2.77,p=0.003),grass areas at school(OR=1.56,p <0.001),and at least 1-2 PA facilities in the community(OR=1.30,p=0.009).Conclusion:Multiple factors at different levels within an ecological framework influencing Thai adolescents’ S/EP were generally similar to those found in developed countries,despite some differences.For those interested in promoting and supporting Thai adolescents’ engagement in sports/exercise,further exploration of the influence of self-efficacy and attitude toward PA is required at the individual level;parental and peer support at the interpersonal level;and home sport equipment,school grass areas,and neighborhood PA facilities at the environment level.
文摘The management of forest corridors and related ecology is one of the effective strategies to minimize the adverse effects of forest degradation. It controls the connectivity of inhabitant species and the connection of the isolated patches. This study analyzed spatial and temporal forest physical degradation based on forest cover change and forest fragmentation in the Gishwati-Mukura biological corridor from 1990-2019. Remotely sensed datasets, Geographical Information System (GIS) and FRAGSTATS software were used to analyze the spatial and temporal physical degradation and changes in forest cover. The results indicated that the Gishwati-Mukura corridor experienced massive deforestation where approximately 7617.1 ha (64.22%) of forest cover was completely cleared out, which implies an annual forest loss of 262.6 ha·year<sup>-</sup><sup>1</sup> (2.21%) during 1990-2019. The forest cover transitions patterns and geostatistical analysis indicated that extensive deforestation was associated with intensive agriculture. The results demonstrated that agriculture has dramatically increased from 29.46% in 1990 to 57.22% in 2019, with an annual increase of 1.97%. Since Gishwati-Mukura has changed to National Park (NP), it lacks diversified scientific studies addressing the analysis of the remote and spatial patterns to investigate its physical degradation and landscape dynamics. This research study will serve as remote forest analysis gap-filling and as the cornerstone of numerous other research that will contribute to the improvement of the connectivity assessments along the Gishwati-Mukura corridor and other related ecosystems.
文摘Traditional national sports are the representatives of traditional Chinese historic culture. With features like strong universality, nationality and involvement, they are deeply loved by the people. And after thousands of years of development, the constant evolution and precipitation, they have become not only the outstanding distinctive culture but also the spiritual wealth of Chinese nation. National fitness programs are mainly for improving the standards of people＇ s physical and mental health to serve for the enhancement of people＇ s overall quality. Traditional national sports are the fertile soil of the social culture and modem sports, as well as the inexhaustible material of popularizing the national fitness programs. With abundant life interest and great sport leisure, the people-oriented traditional national sports are in line with the national fitness programs.
