Yunnan Normal University Research Articles

A Construction of Virtual Reality Technology Teaching Model to Improve Table Tennis Skills for University Students

Background and Aims: To explore and build virtual reality physical education courses, and create a new teaching model of "VR+ teaching" to improve the quality of talent training and teaching effect. This study will build a teaching model of virtual reality technology to improve college students' table tennis skills, trying to enable learners to complete real-time interaction of multiple senses with the help of sensing devices in virtual sports situations, and then combine the goal incentive and feedback mechanism to improve students' self-efficacy and learning interest, which can not only promote the diversified development of sports skill learning but also promote the development of sports skill learning. It also provides a reference for the application of virtual reality technology in physical education. The purpose of this study is to construct of virtual reality technology teaching model to improve table tennis skills for university students. Methodology: The survey included faculty and students at the three universities. Current number of teachers and students: Yunnan University has 1855 students and 66 teachers; Yunnan Normal University has 1980 students and 95 teachers. Yunnan Minzu University has 1531 students and 65 teachers. In this study, the experts were interviewed by telephone interview, face-to-face interview, and summary interview, using the method of interview outline. Questionnaires were distributed to students and teachers on-site and by webmail. The Delphi Method expert questionnaire was issued to 19 experts. Results: Most of the teachers are willing to use virtual reality technology to teach table tennis. They think virtual reality technology will improve their teaching effectiveness. Construct a virtual reality teaching model for improving college students' table tennis skills, and construct a virtual reality teaching model for improving college students' table tennis skills from five dimensions: teaching idea, teaching goal, teaching content, teaching process, and teaching evaluation. Most people agree on all issues (IQR range 0.00-1). Conclusion: Virtual reality technology is applied to table tennis teaching in colleges and universities so that students can quickly enter the role, and effectively improve the dull feeling caused by being bored and unable to hit the ball in the learning process of table tennis. While learning table tennis knowledge and skills, learners actively explore and complete the construction of new knowledge. It provides a new teaching concept for the reform of table tennis teaching and the multiple development of physical education curricula in colleges and universities and also promotes the deep integration of education informatization and physical education teaching in the new era.

Preface

The 2023 3rd International Conference on Advanced Materials and Chemical Engineering (AMCE 2023) was motivated to bridge the scientists, experts, practitioners, and students in the scientific forum through sharing ideas and issues about theoretical and practical knowledge in Advanced Materials and Chemical Engineering.This Conference took place from October 20th to 22nd, 2023 in Changsha, China, bringing together about 130 attendees worldwide. As an annual conference, AMCE has been and will be held in China every year starting from 2021, attracting more than 300 attendees from various countries all around the world. With strong organization team, dependable reputation and wide sponsors globally, AMCE 2023 was even more successful than previous ones.The keynote speeches were provided especially to show the contributions of scholars and experts around the world working in the fields related to advanced materials and chemical engineering towards research experience and professional knowledge sharing. We had more than ten keynote speakers coming mainly from Xiangtan University, China, Hunan University, China, University of South China, China, Wuhan Textile University, China, Yunnan University, China, Central South University, China, Changzhou University, China, Guangdong University of Petrochemical Technology, China, Yunnan Normal University, China, Kunming University of Science and Technology, China, Firat University, Elazig, Turkey, and Harbin Institute of Technology, China. These experts shared remarkable academic achievements in fields related to advanced materials and chemical engineering, and discussed critical challenges and research directions within these domains, triggering heated discussion during the Conference and even in the break.The Proceedings of AMCE 2023 involves various accepted excellent papers around topics including New Semiconductor Materials, Nano Materials and Technology, Dielectric, Ferroelectric Thin Films and Integrated Devices, High-performance Computing in Material Design, Colloid and Interface Chemistry, etc. The selected papers were checked through a rigorous peer review process, and are published in the present volume. Reviews were conducted by expert referees to the professional and scientific standards expected of Journal of Physics: Conference Series.We would like to thank the Conference Committee members for their great support and suggestion provided in every aspect to make the Conference successful and the expert reviewers for their kind assistance in reviewing the manuscripts submitted. We would also extend our best gratitude to the keynote speakers for their invaluable contribution and worthwhile ideas shared in the Conference. Last but not the least is our appreciation to Journal of Physics: Conference Series for every process its members conducted to make this volume published.List of Committee Member is available in this pdf.

Study on the space field reconstruction method of the radial basis function of electromagnetic radiation under optimal parameters

ABSTRACT Electromagnetic radiation (EM) pollution has a certain impact on human life and health, and the reconstruction of the EM space field in this paper is of great practical significance for EM analysis and research. The radial basis function (RBF) sufficiently considers the influence of each sampling point and is more suitable for reconstructing the EM space field than other spatial interpolation methods. Currently, when RBF is used to reconstruct the EM space field, the optimal determination of the basis function and shape parameter (SP) is rarely considered. This ultimately leads to low reconstruction accuracy of the EM space field. Therefore, in this paper, the particle swarm optimization (PSO) is used to calculate the optimal SP of the RBF. On this basis, reliable EM space field reconstruction is performed, which helps people understand the EM distribution characteristics in actual situations from a visual perspective. The EM sampling data of a region on the Yunnan Normal University campus are used as the data source, and the RBF under the optimal parameters is used for EM reconstruction. The accuracy of its interpolation results is evaluated and compared and analyzed with inverse distance weighting (IDW) after distance index optimization. The results show that the RBF under optimal parameters reconstructs the EM space field with high accuracy and good effect, which can truly reflect the actual distribution of EM.

Electromagnetic Radiation Space Field Construction Collected along the Road Based on Layered Radial Basis Function

The electromagnetic radiation (EMR) data collected along a road have a largely empty region overall, while they have a linear distribution locally. Moreover, the traditional spatial interpolation method is not suitable for the electromagnetic radiation space field (EMR-SF) construction collected along the road. In this paper, a layered radial basis function (LRBF) method is proposed to generate the EMR-SF, which interpolates from outside to inside in a layered strategy. First, the regular grid points are constructed based on RBF within the range of sampling data and then are layered based on Ripley’s K function. Second, on the basis of layering, the EMR of grid points is generated layer by layer using the LRBF method. Finally, EMR-SF is constructed by using the sampling data and grid points. The LRBF method is applied to EMR data from an area of Yunnan Normal University in Kunming, China. The results show that the LRBF accuracy is higher than that of the ordinary kriging (OK) and inverse-distance-weighted (IDW) interpolation methods. The LRBF interpolation accuracy can be improved through the strategy of regular grid point construction and layering, and the EMR-SF constructed by LRBF is more realistic than OK and IDW.

Peer Review Statement

All papers published in this volume have been reviewed through processes administered by the Editors. Reviews were conducted by expert referees to the professional and scientific standards expected of a proceedings journal published by IOP Publishing Publishing.• Type of peer review: Single Anonymous• Conference submission management system: Morressier• Number of submissions received: 33• Number of submissions sent for review: 33• Number of submissions accepted: 15• Acceptance Rate (Submissions Accepted / Submissions Received × 100): 45.5• Average number of reviews per paper: 1• Total number of reviewers involved: 14• Contact person for queries: Name: Yingkai Liu Email: prof_liuyingkai@126.com Affiliation: Yunnan Normal University

Empirical analysis of online learning behavior during the post-COVID-19 era

Due to the COVID-19 pandemic, schools all over the world were closed and thereby students had to be instructed from distance. Consequently, the use of online learning environments for online distance learning increased massively. In this study, descriptive analysis and correlation analysis were carried out according to the learning data of online learning of Altitude Training course for ethnic traditional sports major and sports training major in the School of Physical Education of Yunnan Normal University. From this, the influence of online learning behavior investment is obtained.

Enhancing Students' Knowledge of HIV/AIDS through Peer Education Activities: A Case Study of One Awarded Chinese Normal University

Yunnan Normal University has received awards for HIV/AIDS education and prevention among Chinese universities. Therefore, exploring their education methods and activities could provide a guideline for other universities to develop their education plan. This Single-Case Study has three objectives:1) to study peer education activities increasing students’ learning about HIV/AIDS and safe sex practice in Yunnan Normal University, 2) to review HIV/AIDS and safe sex learning content discussed in its Peer education program, and 3) to study major aspects contributing to the success of students’ learning about HIV/AIDS prevention and safe sex practice through a peer education program. Three data collection techniques were a semi-structured interview, observation, and document review. The participants include six teachers who have worked in HIV/AIDS education or safe sex education activities for more than five years and nine students in grade 4. The research results include 1) healthy living perspectives and sexual morality are the essential contents of HIV/ AIDS education in Chinese universities, 2) a good relationship between the educators and learners is vital to eliminate embarrassment when teaching sensitive knowledge, 3) organizing activities by well-trained peer educators is one of the most effective methods when conducting HIV/ AIDS education. Keywords: Peer education activities, HIV/AIDS education, Awarded University, Chinese Normal University DOI: 10.7176/JEP/13-27-03 Publication date: September 30 th 2022

The Acceptability of Traditional Culture under the Background of Deep Learning.

The cultural values of a country impact its national psychology and identity. Citizens' values and public opinions are conveyed to state leaders over the media and other information channels, both directly and indirectly influencing decisions on foreign policy. The traditional cultural values that affect the psyche of the Chinese people are harmony, generosity, morality, courtesy, wisdom, honesty, loyalty, and filial piety. This study aims to analyze the attitudes of Chinese college students toward traditional culture. The reliability and effect factors of the traditional culture acceptability questionnaire are set in the context of deep learning. A questionnaire on traditional culture education of college students is compiled using the indicator evaluation methods, and the current situation of traditional culture education is investigated for college students. A total of 300 valid respondents are returned from five universities including Shanghai Jiaotong University, Fudan University, Yunnan University, Kunming University of Science and Technology, and Yunnan Normal University. Results show that 28% of college students believe that practical activities including visiting and learning and traditional festival commemoration are the most effective ways to educate traditional culture for them, which accounts for the largest percentage. Similarly, 19% of students suggest online publicity, while 16% believe that lecture reports are particularly important, and 12% of students advocate the teaching courses. In addition, about 23% of the students choose other methods, such as seminars, setting up Chinese culture festivals, and building cultural associations. The outcomes of this study provide data support for identifying the shortcomings in traditional cultural education and formulating strategies.

Through Their Eyes: Ethnic Minority Students Describe Teachers Who Helped Them Succeed in School

In this article, ethnic minority students describe teachers who helped them succeed in school. Data are drawn from interviews conducted in 1997 with successful students enrolled in a pre-service education program at Yunnan Normal University. Many of the interviewees are now mid-career teachers in schools throughout Yunnan Province. Plans (postponed due to the pandemic) have been made to interview these individuals again, hopefully later in 2022. The focus here is on one characteristic of effective teachers that was mentioned frequently by the students, and that is teachers’ ability to bring about change. A tentative theoretical model was developed to explain teacher change agency. Using the model, we find that change brought about by teachers is manifested in students, schools, and society.

Design and Research on Big Data’s Smart Ideological and Political Classroom in Colleges and Universities in the New Era

This paper introduces the significance of big data intelligent ideological and political education research in Colleges and universities in the new era, summarizes the research status of key technologies of Ideological and political education in Colleges and universities, and puts forward the concept of big data's intelligent ideological and political education classroom in Colleges and universities and key technologies of its model. Combined with the background of "a board of chess" epidemic prevention and control, taking Yunnan Normal University's education informatization and students' Ideological and political education work management as an example, this paper exemplifies "class suspension and keeping teaching" the working mechanism of big data's intelligent ideological and political classroom model in Colleges and universities and part of the front-end interface display are given, which provides reference for the research of big data's ideological and political education work and education information data center "a board of chess in the whole school".

Эпосы Дай под влиянием дуалистических религий

Эта статья является результатом исследования, поддержанного Фондом проектов молодых ученых Китайской академии социальных наук за 2017–2019 гг. В исследовании использованы полевые материалы и данные, полученные при на анализе эпического текста. Полевые работы проводились в основном в двух основных населенных пунктах Дай – в Дэхун и Сишуанбаньна. В ходе интервью с сельскими жителями, наблюдения церемоний для получения эффективной информации и народных сказок выяснилось, что схожие нарративы распространяются в разных регионах Дай, и содержание этих повествований отражает различное отношение к буддизму и примитивным религиям. За три года обучения автор переписал, перевел и аннотировал два эпических произведения: один из них – «Пэншанлуо», устная версия «Батамага Пэншанлуо» в исполнении двух певцов Дай на церемонии; а другой – «Чуангшиджи», изданный на языке дехонгдай. Есть некоторые различия между двумя эпосами по объему, содержанию, структуре, способу повествования и передачи.Дайцы утверждают, что у них есть сотни эпосов, и большинство из них связаны с буддизмом Тхеравады. Обычно они исполняют эти эпосы в неких религиозных мероприятиях: либо эпические певцы исполняют устно, либо глава верующих буддизма переписывает текст. Автор провел исследование, находясь внутри среды бытования эпоса. Благодаря полевым исследованиям и подробному текстологическому анализу, эта статья освещает вопросы формирования, развития и наследования эпоса Дай в контексте дуалистической веры.Статья имеет определенную структуру изложения. Во-первых, рассматривается дуалистическая религия этнической группы Дай: буддизм Тхеравады, пришедший из Таиланда, Лаоса или Бирмы, оказал большое влияние на литературу Дай; в то же время люди Дай придерживаются примитивной религии, глубоко укоренившейся в местной культуре. Затем эпосы детально анализируются, сопоставляются характеры повествования и структуры нескольких эпосов, включая эпические произведения «Батамага Пэншанлуо», «Чуангшиджи» и уникальные эпосы Алуанга. И наконец, исследуется взаимосвязь религиозной традиции и эпоса Дай.Проведенный анализ установил, что предки Дай переводили буддийские рассказы в стиховую форму письмом Дай, исходя из своего ритма. Между тем, они включили местные повествования и скомпилировали их в рукописи, имитирующие сутры, которые называются на китайском языке «Бэйе Цзин» (рукописи из пальмовых листьев), на языке Дай – «Лик» или «Тхам». Это разновидности сутр в стиле Дай, которые содержат эпосы Дай и являются символом дайской культуры. Помимо буддийских повествований, в этих сутрах также записано множество мифов, народных сказок, легенд и других знаний. Таким образом, эпосы Дай характеризуются двойственностью: с одной стороны, они содержат местные повествования, отражающие поклонение предкам и верования в анимизм этнической группы Дай; с другой стороны, они несут буддийские истории и отражают буддийскую мысль. Поскольку эпосы Дай имеют неразрывную связь с буддизмом Тхеравады, в дальнейшем автор намерен продолжить изучение эпосов Дай и проводить их сравнительные исследования с эпосами Юго-Восточной Азии и Индии.

The curious case of C-88: impacts of a potato variety on farmers in Yunnan, China

BackgroundLimited analysis has been conducted of the role of agricultural research in promoting Chinese agricultural growth in less-favored areas. This paper analyzes how a particular potato variety generates benefits to producers and discusses how these benefits may have contributed to poverty reduction in Yunnan province. Cooperation 88 (C88) is a high-yielding, late blight-resistant variety that was developed through a partnership between the International Potato Center and Yunnan Normal University in Kunming, China.MethodsQualitative and quantitative methods are used to analyze determinants of adoption of C88, and to estimate impacts of adoption on producer well-being. A unique farm-household database is used to document the determinants of C88 adoption and disadoption. The quantitative assessment is supplemented with a qualitative analysis of the potato value chain to understand how seed availability and concern for processing attributes contributed to and eventually constrained diffusion. Market-level information was used in an economic surplus model to quantify the substantial economic impact of C88 over 20 years since its release.ResultsC88 spread rapidly in Yunnan following its release and was widely adopted by commercially oriented farmers. Disadoption began after 2010 with limited seed availability driving the shift toward newer varieties. Farmers, however, appreciate the ease of marketing, the 15% higher yields, and late-blight resistance associated with C88 suggesting that seed constraints are countervailing the economic benefits of the variety. Total impact on Yunnan potato farmers of the variety was estimated to be around $2.5 billion for the 1996–2015 period.ConclusionsOn per-person terms among C88 growing farm households, the economic advantage of the variety is likely to have contributed to poverty reduction. The aggregate impact of C88 diffusion occurred during a period of rapid poverty reduction in Yunnan and yield and disease-resistance benefits of C88 likely contributed to this reduction.

The Variation Law of Different Underlying Surface Temperature and Urban Temperature

The rapid development of urbanization has changed the type of underlying surface within the city and affected the temperature changes in the city. Mastering the relationship between urban temperature and the temperature of the different underlying surface is the basis for improving the urban heat island effect. To this end, select the school with representative urban characteristics to study the relationship between urban temperature and urban underlying surface types under different weather conditions. The Chenggong Campus of Yunnan Normal University in Kunming, Yunnan Province is the typical urban research object. Extracting the underlying surface type data of four main active areas such as grassland, water surface, bare soil and asphalt by means of artificial field measurement, and analyzed. The experimental results show that under different underlying conditions, the influence of environmental climatic conditions on urban temperature is different. This shows that in urban planning, the rational planning and design of different underlying surface types can effectively solve the urban heat island and rain island effect problem.

Research on the Spatial Reconstruction of University Libraries: A Case Study of Liu Xiao Ling Tong Book Pavilion of Yunnan Normal University

Abstract With the spatial culture theory as the basis and from the perspective of cultural heritage, this paper elucidates the construction of the Liu Xiao Ling Tong Book Pavilion of Yunnan Normal University (which may also be interpreted as a Traditional Culture Commons), introduces modern library concepts such as ‘celebrity charm’, featured resources and space reconstruction, as well as provides enlightenment to the library cycle with Chinese wisdom and experience. This paper applies participant observation method, interviewing method and textual analysis method with the data collection period from September 2015 to December 2016. Through library space reconstruction and the inheritance of certain outstanding features of Chinese culture, the Liu Xiao Ling Tong Book Pavilion has had an influence among university faculty and students, the university library circle in China and even the entire education circle, while also complemented and improved the applicability of the spatial culture theory in the library circumstance.

Studies on Three-Dimensional (3D) Modeling of UAV Oblique Imagery with the Aid of Loop-Shooting

Oblique imagery obtained from an Unmanned Aerial Vehicle (UAV) has been widely applied to large-scale three-dimensional (3D) reconstruction; however, the problems of partially missing model details caused by such factors as occlusion, distortion, and airflow, are still not well resolved. In this paper, a loop-shooting-aided technology is used to solve the problem of details loss in the 3D model. The use of loop-shooting technology can effectively compensate for losses caused by occlusion, distortion, or airflow during UAV flight and enhance the 3D model details in large scene- modeling applications. Applying this technology involves two key steps. First, based on the 3D modeling construction process, the missing details of the modeling scene are found. Second, using loop-shooting image sets as the data source, incremental iterative fitting based on aerotriangulation theory is used to compensate for the missing details in the 3D model. The experimental data used in this paper were collected from Yunnan Normal University, Chenggong District, Kunming City, Yunnan Province, China. The experiments demonstrate that loop-shooting significantly improves the aerotriangulation accuracy and effectively compensates for defects during 3D large-scale model reconstruction. In standard-scale distance tests, the average relative accuracy of our modeling algorithm reached 99.87% and achieved good results. Therefore, this technique not only optimizes the model accuracy and ensures model integrity, but also simplifies the process of refining the 3D model. This study can be useful as a reference and as scientific guidance in large-scale stereo measurements, cultural heritage protection, and smart city construction.

Grid-Connected Semitransparent Building-Integrated Photovoltaic System: The Comprehensive Case Study of the 120 kWp Plant in Kunming, China

A 120 kWp building-integrated photovoltaic (BIPV) system was installed on the south facade of the Solar Energy Research Institute building in Yunnan Normal University. The area of the curtain wall was 1560 m2 (26 m × 60 m), which consisted of 720 semitransparent monocrystalline silicon double-glazing PV panels. This paper studied the yearly and monthly variations of power generation in terms of solar data and meteorological parameters. The total amount of power generation of the BIPV system measured from October 2014 to September 2015 was 64.607 MWh, and the simulation results with TRNSYS (Transient Systems Simulation Program) provided the 75.515 MWh predicted value of annual electricity production with the meteorological database of Meteonorm, while, based on the average value of the performance ratio (PR) of 60% and the life cycle assessment (LCA) of the system, the energy payback time (EPBT) of 9.38 years and the potential for pollutant emission reductions have been evaluated and the environmental cost is RMB ¥0.01053 per kWh. Finally, an economic analysis was carried out; the net present value (NPV) and the economic payback time of the BIPV system were estimated to be RMB ¥359,347 and 15 years, respectively.

2017 International Conference on New Energy and Future Energy System (NEFES 2017)

PrefaceThe 2nd International Conference on New Energy and Future Energy System (NEFES2017) was held from September 22nd to 25th, 2017 in Kunming, China. The technical program comprised three keynote speakers, fifty invited speakers, five oral presentation sessions and an interesting poster session.NEFES 2017 is sponsored by Yunnan Normal University. It aims to provide a platform for researchers and practitioners in both industry and academia to have a brainstorm, share their latest achievements and discuss the possible challenges in terms of new energy and future energy system. This volume records the proceedings of NEFES 2017 and contains 81 rigorously selected manuscripts submitted to the NEFES 2017 conference. All the manuscripts were selected depending on their quality and relevance to the conference.The Organizing Committee would like to thank all the authors who contributed to NEFES 2017 and also the reviewers who provided their valuable comments and suggestions.The 3rd International Conference on New Energy and Future Energy System (NEFES 2018) will be held in Shanghai, China. Everybody is welcomed to submit high quality papers to NEFES 2018! More information will be available at the conference website: http://www.intergridconf.org/2018/EditorDr. Grigorios L. KyriakopoulosNational Technical University of Athens, Greece.

Bibliometric Analysis of CSSCI Journal Papers Published by Faculties of Yunnan Normal University from 1998 to 2015

Using CiteSpace as tool, this paper analyzes CSSCI journal papers published by faculties of Yunnan Normal University (YNNU) from 1998 to 2015 from five aspects (distribution of disciplines, distribution of years, research hotspots, distribution of journals and contributions) and draws conclusions, so as to put forward some suggestions to promote the development of humanities and social sciences research of YNNU, at the same time provide a reference for normal universities and colleges to establish a more objective and fairer humanities and social sciences research evaluation system.

Teaching of Chinese Degree Adverb Synonymous with the Meaning of “very” for Occidental Students at the Beginning Level: A Case Study of Chinese Beginner in Yunnan Normal University

This study focuses on one of the importantand difficult language points in teachingChinese as the second language, synonymousdegree adverbs in modern Chinese language,aiming at the beginning level of occidentalstudents who excessively rely on their mothertongue. The research has been done byobserving a group of typical adverbs with themeaning of “very” in Chinese language, such as"feichang, shifen, hen, ting, ji" in combinationwith ontology and error analysis and classroomtesting. The paper explores the reasons andtypes of errors, and designs the teaching planaccording to the testing results. Comparing thetesting results, it is suggested that comparewith error analysis, language testing combinedwith inductive reasoning is more effective inteaching synonymous degree adverbs in modernChinese language.

云南高山姬鼠头骨的几何形态学研究

PDF HTML阅读 XML下载 导出引用 引用提醒 云南高山姬鼠头骨的几何形态学研究 DOI: 10.5846/stxb201409011737 作者: 作者单位: 云南师范大学生命科学学院,云南师范大学生命科学学院,云南师范大学生命科学学院,云南师范大学生命科学学院 作者简介: 通讯作者: 中图分类号: 基金项目: 国家自然科学基金项目(31360096);云南省应用基础研究计划重点项目(2013FA014);获云南省博士研究生学术新人奖资助 Geometric morphometric research of the skull of Apodemus chevrieri from Yunnan Province Author: Affiliation: School of Life Sciences,Yunnan Normal University,School of Life Sciences,Yunnan Normal University,School of Life Sciences,Yunnan Normal University,Yunnan Normal University Fund Project: 摘要 | 图/表 | 访问统计 | 参考文献 | 相似文献 | 引证文献 | 资源附件 | 文章评论 摘要:表型可塑性是指同一基因型在不同环境条件下而产生多种不同表现型的反应能力。哺乳动物头骨形态的变化是在进化过程中出现的重要表型特征之一。云南省地势西高东低、海拔变化剧烈、是古北界寒带物种南迁,中南半岛热带物种北移的交汇地,自然环境的地带性和非地带性变化明显,栖息在该地区的动物为了适应多样的环境,可能出现不同的表型分化。高山姬鼠(Apodemus chevrieri)为我国特有种,主要分布在中国西南的横断山及其附近地区,是研究表型与生态适应之间关系的理想物种。为研究在云南特殊生态环境下物种的微进化,采用几何形态学的方法测量云南不同地区高山姬鼠头骨形态的变异,采用线粒体细胞色素b(Cytochrome b, Cyt b) 基因和线粒体控制区(Mitochondrial control region, D-loop)探讨基因型的变化。结果显示:昆明种群与横断山种群(中甸、剑川、丽江)间发生了明显的形态变异和遗传分化,高山姬鼠头骨背面和腹面,横断山种群和滇中昆明种群很少重叠,这两个种群变异较大;但头骨的侧面和下颌侧面变异不明显。因此,分布于云南地区的高山姬鼠可能正处于生态物种形成的早期阶段。 Abstract:Phenotypic plasticity is the capacity of individuals to modify their phenotype in response to environmental changes. Fundamental to the way in which organisms cope with environmental variations, phenotypic plasticity is associated with all types of environmentally-induced variations, including changes to morphological, physiological, and behavioral processes. The skull morphology of mammals is the most important phenotypic trait, which changes during the evolutionary process. The Chevrier's field mouse, Apodemus chevrieri is a nocturnal and species endemic to China, and originated in the Palaearctic region. A. chevrieri is mainly distributed in the Hengduan Mountains and nearby regions of China, including Zhaotong, Kunming, Lijiang, Dali, and the land around the Lancang and Nu Rivers in Yunnan Province. A. chevrieri mainly inhabits farmland and its nearby shrubland, and is one of the main natural foci of plague in the Hengduan Mountains, which is a crossroads of species dispersal. The boreal species of the Palaearctic migrating southward, and tropical species from the Indochina Peninsula migrating northward, and thus is an area of interest for biologists studying mammal diversity. Meanwhile, the Hengduan Mountains are located in the west of the Yunnan Province, where there are many mountains and canyons. From west to east, there are dramatic changes in environmental conditions with changes in altitude, and noticeable changes were observed in the zone and non-zone landscape. In order to adapt to the different environments, animals inhabiting the area may exhibit different phenotypic variations, so A. chevrieri was employed as an ideal model for examining the relationships between phenotypic and ecological adaptations. The analysis of morphology is a fundamental part of many biological studies. With the development of more sophisticated statistical techniques, the sophistication of analyses of these types of data also increased. Since the 1980s, there was a fundamental change in the nature of the data gathered and analyzed, as scientists began to focus on the coordinates of landmarks and the geometric information relating to their relative positions. Geometric morphometrics, was hailed as a "revolution" in morphometrics. Morphological divergence among taxa was estimated quantitatively by analyzing the outline of the mandible. This method treats the mandible shape globally, and provides continuous data which can be used to compute phenotypic distances. In order to study the microevolution of species in the Yunnan province, with its special ecological environment, we applied geometric morphometric methods to the study of skull shape changes in different areas of A. chevrieri distribution, and used mitochondrial cytochrome b (Cyt b) gene and control region (D-loop) to investigate the gene type. The results showed that the Kunming and Hengduan Mountain populations (Zhongdian, Jianchuan, and Lijiang) exhibited obvious morphological and genetic variations. In particular, the dorsal and ventral of skull in A. chevrieri rarely overlap between the Hengduan Mountain populations and the Kunming population, with large variations between two populations having been noted. However, the side and lower side of the skull showed no significant variation between populations. Therefore, this study indicates that A. chevrieri in the Yunnan Province might be in the process of undergoing ecological speciation. 参考文献 相似文献 引证文献