Doctoral Research Project Research Articles

Agitporn Colômbia:

AGITPORN COLÔMBIA: "Do pornô ao bioterrorismo" (2018) é um zine-roteiro, um “programa performativo”, para performances diárias criado no e para o contexto colombiano, no entanto também pode ser traduzido para diversos outros contextos latinoamericanos. É um dos frutos da pesquisa de doutoramento ABC da luta dos povos originários do Brasil: performances, pedagogias, propagandas e (imagens) políticas pela descolonização social que desenvolvo no PPGT-UDESC sob orientação da Profa. Dra. Fátima Costa de Lima e da residência artística Abejas TAPIOCA que realizei, junto ao coletivo Corporación TAPIOCA e contemplado pelo IBERESCENA, entre julho e setembro de 2018 em parceira com comunidades indígenas "desplazadas" de seus territórios originários pela guerrilha e/ou narcotráfico. Esta publicação é uma tradução do espanhol com uma pequena introdução e uma troca de mensagens eletrônicas feitas para a revista DAPesquisa.

Using a 360° camera as a mobile data collection method towards understanding information types and use in running

AbstractThis paper presents a mobile data collection method using a 360° camera developed in an ongoing qualitative doctoral research project. The method captures audio, participant action and the running environment visuals of a situation in an immersive way compared to traditional audio‐video capture. The method contributes towards an understanding of information types, use and value amongst those who run. This paper describes the mobile method, its research context and provides an insight to how the method has contributed to developing findings about information types and use.

Systems Dynamics and Serious Video Games in an Appropriation Strategy of a Decision Support System for Small Livestock Farmers

This document presents a Decision Support System (DSS) aimed at small livestock farmers who have not made use of Information Technologies (IT) in their production systems. The DSS was built based on the finite difference equations of a simulation model in System Dynamics in whose definition the beneficiaries participated and also served as a base for the development of a serious video game. The DSS and the Serious video game is supported in a Web and Mobile Architecture. The simulation model and the serious video game are used as support tools in the training given to users to learn how to use the DSS. These three tools are the result of a doctoral research project, which used two methodologies during its execution: Design and Development Research and the Case Studies methodology. The tools were applied in an appropriation strategy with livestock farmers of the department of Santander in Colombia, where resistance to change and cultural attachment causes a low adoption of technology. The inclusion of gamification elements helps the user to understand the connection of these elements and their processes in a real farm, know the large volume of data managed by the DSS, enhance the process by making it more fun, improve the learning curve and provide useful data for tracking the use of the DSS. 16 months after the end of the training, the DSS has more than 13000 reported records about the activities of the farmers in their farms.

IN THE BEGINNING WAS THE ‘DIMENSIONS’. THEN, EVENING PASSED AND MORNING CAME - THE ‘SOCK’ IN DOCTORAL RESEARCH

An evaluation and understanding of that genre of academic degree attributed as the highest academic recognition bestowed by a university - the PhD or the doctoral research programme, is the aim of this essay article. The attributes or nature of the doctoral programme are referred to by the writer as ‘dimensions’. The researcher utilized various reliable sources both offline and online and gathered information from seminars and talks of intellectuals from the academia in synthesizing information to create a piece of writing that comes from the prespective of an early research scholar. Research projects are done by way of a dissertation at all levels of higher education. The question asked is - can we carry the same mindset, structure and rigour of the research undertaken at the undergraduate level of education, or more precisely, the master’s research to the PhD research programme? And of course, can there be that confidence that one can bring or feel or have as a result, to the PhD programme? Furthermore, a question that is asked in the doctoral education programme is - whether a scholar creates or invents knowledge? Or is it the use of the philosophical frameworks of the science of knowledge, in attempting to bring out what is already there, to be justified and tested, thus classifying and giving it an orderly and labelled existence, which then becomes the new form of knowledge? Doctoral research projects undertaken are of various orientations, yet there is that element, a movement to the ‘SOCK’ which makes a PhD worthy. This research paper reviews and shares insights from the perspective of an early research scholar on the various premises and claims to make rationale the arguments/research questions stated.

New Zealand therapist insights into the intersecting fields of sexualities and childhood.

Little research has been published about therapists' insights into the intersecting fields of sexualities and childhood. In this paper, I focus on therapists' responses from my recently completed doctoral research project in Aotearoa New Zealand. In this study, I analysed "talk" by adults (parents, teachers, and therapists), responding to the question: What language is used to describe childhood sexuality by adults in Aotearoa New Zealand? Through group and individual interviews, participants were invited to respond to a range of vignettes about children's actions that some people regard as sexual. The analysis shows that therapists, like parents and teachers, drew on heteronormative ideas of child development to describe and shape children's expressions of sexuality. Questions about gender and sexual pleasure in childhood are discussed and the article concludes with an invitation to counsellors to examine their own positioning in their talk about the child and sexuality. [ABSTRACT FROM AUTHOR] Copyright of New Zealand Journal of Counselling is the property of New Zealand Association of Counsellors and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Put Your Big Girl Knickers on! The Experiences of Two Female Leaders in New Zealand Primary Schools Turning Schools Around

This chapter examines the experiences of two female leaders in New Zealand state primary schools and their experiences of turning their schools around. Leading schools through times of change and challenge is complex, especially when issues of school underperformance and student achievement are intertwined. In some instances, such circumstances result in educational authorities imposing an intervention such as a ‘turnaround’ program. Each year a small number of New Zealand schools are considered ‘underperforming’ and require external leadership assistance, usually from the Ministry of Education. This support is implemented through a statutory intervention mechanism aimed to address underpinning issues such as governance and leadership matters, low student academic achievement, issues of finance, and student and staff safety and wellbeing (Ministry of Education, 2017). While statutory interventions have been enacted in New Zealand since 1994 as a mechanism to ‘turn a school around’, there is little research about what this experience is like for educational leaders in primary (elementary) schools, or how it affects their professional and personal lives. Within the turnaround school literature, educational leaders are often positioned as ‘heroic leaders’, usually male, seeking to change the school’s climate and culture. However, there is little literature discussing how female educational leaders approach school recovery processes. With sparse acknowledgement of the effects this work has on a leader's professional and personal life, it is within these spaces that this research on female leaders’ experiences is situated. This study was part of a doctoral research project undertaken in 2016 to explore New Zealand primary school leaders’ perceptions and experiences of working to turnaround schools and addressing complex and challenging circumstances within their schools and communities. Using Dewey’s theory of experiences, the professional and personal experiences of two female leaders’ leading such schools are focused on to understand how their leadership is, in Clandinin and Rosick’s (2007) terms, constituted, shaped, expressed and enacted. The research revealed the professional and personal struggles both women encountered in their journey to turn their schools around, and contributes critical findings to the research focused on women’s experiences when turning schools around.

'Aching to be a boy': A preliminary analysis of gender assignment of intersex persons in India in a culture of son preference.

Intersexuality,particularlyin the global South,remainsan under-researched field of study.In my in-progress doctoral research project,I explore the cultural, social, and medical discourses that influence how key stakeholders such ashealthcare providersmake decisions aboutthesex and genderassignmentof the intersex child in India.In this paperI interrogate some of these ideas around gender assignment of intersex people in India, paying particular attention to the context of son preference. I am interested in exploring how decisions of gender assignment by medical professionals are guided by ideas of son preference. Focusing on four qualitative, semi-structured, in-depth interviews across two cities with medical doctors from different specializations, this paper is a preliminary attempt to examine some of the factors that guide medical professionals in making decisions about gender assignment of intersex children andexplore the dynamicsofthe decision-making process.Specifically, Iexplorethe factors thatinformdoctors'decision-makingand locate these decision-making processeswithin thebroadersocio-cultural context ofIndia.

Writing Lived Experience – A Melancholy Elegy

This paper explores the limitations of language in psychotherapeutic writing about lived experience and how psychanalytic concepts can help us both understand and work through the inevitable loss that results from these limitations. It is illustrated by the author’s experience of undertaking a doctoral research project in psychotherapy where the experience of narrative incoherence was explored through writing. Paralleled to the doctoral research project was the author’s challenges in writing the experience of incoherence. By reflecting on and analysing these challenges, this paper explores the sense of loss that is located at the core of writing lived experience through psychoanalytic concepts including the third position and melancholia. The limitations of language in capturing the fullness of lived experienced is shed light on. Connecting the psychoanalytic concept of melancholia to Romanyshyn’s (2013) writing as elegy, I propose writing lived experience as a melancholy elegy in which what is lost in language can be acknowledged and kept alive in the writer’s psyche. I argue for the creative potential brought by the continuous engagement with the sense of loss in writing lived experience.
 
 Reference:
 Romanyshyn, R.D. (2013). The wounded researcher: research with soul in mind. New Orleans, Louisiana: Spring Journal Books.

Patient and public involvement in doctoral research: reflections and experiences of the PPI contributors and researcher

Plain English summaryThere is evidence in the literature showing that involving patients and the public in health research can have a positive influence on quality, relevance and impact of research. However, patients and the public are not always involved in all stages of the research. There is often no explanation as to why they were only involved in some stages of the research and not others. Additionally, there is often no description of researchers’ or PPI contributor’s experiences of involvement. This also raises another issue which is a lack of recording of impact such involvement can have on the research process and the people involved in the research. In this paper, we present what PPI in a doctoral research should look like by providing a detailed description of how involvement occurred from pre-funding to dissemination stages of the research process. We provide some practical examples of how this was done and how involving patients made a difference to the research project. Finally, we present reflections from the patient and public contributors and the researcher on involvement in this project along with some recommendations for future doctoral and postdoctoral researchers considering involving public/patient contributors in their research.BackgroundPatient and Public Involvement (PPI) has received considerable attention in the last two decades and working in partnership and co-design have now become a prerequisite in health services research in the UK. However, there is a lack of evidence and consistency in recording PPI and related activities. Researchers and PPI contributors are encouraged to record and reflect on the impact of PPI on research. There is significant variation in the way PPI contributors are involved, and it is often limited to some stages of the research cycle than others, without any reflections on the decision-making process for such involvement or any transferable learning. This has resulted in failure to provide a narrative of the research journey including researchers’ and PPI contributors’ personal reflections of involvement. Therefore, this paper provides an exemplar of what PPI in a doctoral research context should look like by providing a detailed account of how PPI was embedded in a doctoral research project, the PPI contributors and researcher’s reflections and key recommendations for involving people specifically in doctoral research.MethodsA reflective approach was taken using data from PPI contributor and researcher notes, e-mail correspondence, meeting notes. Data is presented narratively to reflect on the experiences of involvement throughout the research cycle.ResultsUndertaking PPI enhanced the quality and relevance of the doctoral research, contributed to the recruitment of study participants, data analysis and dissemination. Building trust and relationships with PPI contributors was key to continued involvement throughout the life of the project and beyond. There is a need to adopt flexible approaches rather than a one-size-fits-all model when working with PPI contributors. Reflections by PPI contributors and the researcher emphasises that involvement was a rewarding experience.ConclusionsThis paper contributes to the wider literature by providing an exemplar of how PPI can be embedded in doctoral research and demonstrates the value of PPI to the research process and the individuals involved. We also present recommendations on how PPI can be incorporated by doctoral and postdoctoral researchers when planning PPI in their research project.

Enfoque científico y filosófico de la aplicación de un modelo de costeo ABC como alternativa de desarrollo del sector agrícola ecuatoriano

Este estudio tiene como finalidad explicar la concepción del conocimiento, filosofía y ciencias que se considera adecuada para la propuesta de aplicación de un modelo de costeo ABC como alternativa viable para el desarrollo del sector agrícola rural ecuatoriano, se recurrió a la revisión de textos de varios filósofos afines a la ideología de las ciencias contables, para conocer sus teorías, enfoques epistemológicos y metodologías para luego de su entendimiento relacionarlos con el tema planteado. Desde el punto de vista de lo que se desea lograr con esta propuesta, se evidencia que la concepción de la investigación se dirige a la corriente positivista mientras que el desarrollo del modelo se considera debe ser demostrado en falso para evitar contingencias. Se concluye que a partir de la investigación científica se pueden generar teorías contables que luego de ser validadas pueden ser aceptadas por la sociedad y así darle el reconocimiento a la Contabilidad como Ciencia.

Heritage, Conflict, and Reconstructions: From Reconstructing Monuments to Reconstructing Societies

AbstractThis article reflects on the arguments that heritage is as much about people as it is about places and objects. It is focused on Syria and based on a doctoral research project. The article investigates how heritage is approached by both “civil society” groups and extremist religious groups in Syria. It argues that the utilization of heritage by these groups offers learning lessons and examples of people-centered, socially innovative, and future-oriented heritage practices. The article suggests that the heritage community’s efforts in conflict contexts should be less about preservation and more about embracing change and finding creative ways to manage the transformation process from a pre-conflict society to a post-conflict society. In other words, they should tackle issues that matter to conflict-affected people, improve the quality of their life, and increase their horizons of hope and opportunities in assembling better futures.

‘If you didn’t laugh, you’d cry’: Emotional labour, reflexivity and ethics-as-practice in a qualitative fieldwork context

This article takes Guillemin and Gillam’s distinction between ‘procedural ethics’ and ‘ethics in practice’ as a point of departure and return for reflecting critically on a recently completed doctoral research project about political violence and terrorism. It provides an overview of the study before offering some instructive vignettes to show how ethical decision-making processes engaged with ‘in the field’ were an extension of more everyday and mundane reasoning than we may typically associate with such quintessentially ‘sensitive research’. As the final section of this article argues, it is this everyday and mundane quality to ethical reasoning which is sometimes obscured in formal accounts of ‘reflexivity’. It is hoped that this article is useful for scholars interested in the ethics and emotional practices of qualitative inquiry, as well as those researching serious violence and bereavement.

With our Clipped Wings: a research-based performance on gay men’s identities devised through narrative portraiture

ABSTRACT With our Clipped Wings is a performance that showcases the research findings of the doctoral research project “Understanding gay men’s identities through narratives of their erotic and romantic relationships.” The performance delivers compelling narratives through which participants in this research described in their own words what being gay means to them. It offers an intimate opportunity to observe the ways in which gay men have been trapped in oppressive social dynamics, environments, and discourses that have facilitated sexual encounters but have clipped their wings to love.

Violencia y autoridad en la escuela secundaria

El presente artículo es resultado de una investigación doctoral desarrollada entre los años 2011 y 2018, enfocada al estudio de lo que popular —y peligrosamente— se conoce como “violencia escolar”. La hipótesis que orienta este escrito supone que las expresiones juveniles que muchos educadores consideran “violentas” no son arrebatos cuyas causas puedan atribuirse únicamente a un individuo, sino que, en general, son manifestaciones (con un fuerte contenido “físico”), consecuencia de la autorregulación juvenil que sucede a la indiferencia de los adultos. El desarrollo de esta conjetura se sustenta sobre dos fuentes de información: una serie de entrevistas realizadas a docentes y alumnos de escuelas secundarias, y una minuciosa revisión de bibliografía especializada. Las conclusiones reivindican el lugar de la educación secundaria en el proceso de renuncia a la violencia, es decir, en la construcción de lazos sociales, el reconocimiento de un orden simbólico y el uso responsable del cuerpo.

Qualitative doctoral research in educational settings: Reflecting on meaningful encounters

<p>In qualitative doctoral research the methodological approach, and <br /> the research design are extremely important when ensuring the rigorousness of the work. This is particularly significant for all researchers, and even more for doctoral students who are still developing their research and analytical skills. This paper aims to support doctoral students in their research journey by highlighting some of the tensions involved in conducting qualitative research by unpicking the experiences of two doctoral students to learn from the concerns, questions and reflections on the use of qualitative methodology in their doctoral research projects. The findings reveal challenges and insights with regards to reflection, educational research and the developing identity of being a researcher. The paper discusses these reflections to support and guide doctoral students as early career researchers when planning and conducting qualitative research in educational settings. </p>

Rural 2.0?: Investigating Place-Based Rural Innovation Systems & their Implications for Public Policy & Community Development Practice

We live in an era obsessed with innovation. So much so that in 2016, the Government of Canadabegan work on a new national‘Innovation Agenda’ with the following proposition: “Innovationis a Canadian value. It’s in our nature, and now more than ever, it will create jobs, drive growthand improve the lives of all Canadians. It’s how we make our living, compete and providesolutions to the world. We have the talent, the drive, the dedication and the opportunity tosucceed. So, what’s next?” However, as every public consultation on the Innovation Agenda tookplace in a major city and produced initiatives with names like ‘the Smart Cities Challenge,’ itseems like ‘what’s next’ is a national innovation conversation so steeped in unquestioned urbanism that it fails to even acknowledge, let alone include, rural Canadians. This doctoralresearch project will use a comparative case study approach to investigate the complexrelationships at play in place-based rural innovation systems and provide grounded, illustrativenarratives for informing public policy.

ESTUDIO DE UNIVERSITARIOS QUE SUFREN VIOLENCIA EN LA RELACIÓN DE PAREJA

This article addresses the issue of gender violence in Mexican men. From a doctoral research project that studied the violence experienced today by young university students (men) who are violated by women in their relationship. The study was carried out with a male student population of students attending classes in the school system, working with a universe of 3364 students corresponding to the enrollment in the system, applying a statistical formula of Taro Yamane (1998) to obtain the representative sample that yielded a total n = 345 students with a confidence level of Z = 99% and a sampling error of 0.52%. The instrument used was a questionnaire on violence in relationships provided by Dr. Fernando Chapado de la Calle, professor at the University of Malaga in collaboration with the Association of Shared Custody of Malaga, Spain. This instrument consists of six categories that measure the violence exerted by women towards men, with 10 items home category evaluated. The results show that university men who have a relationship as a couple suffer violence from their different manifestations, physical, economic, sexual, control, psychological and emotional on the part of women, and they are the gender that suffers in silence from being unable to manifest openly, because of the shame of historically belonging to the male figure, which represents in society the strongest and most insensitive stereotype.

Meanings ascribed to the concept of "giftedness": Implications for counselling with young people.

This article focuses on social constructions of giftedness and on what these perceptions and understandings mean for helping professionals, most notably counsellors, working with gifted young people. It also looks at the apparent impacts of these perceptions and understandings on the mental and emotional wellbeing of young people who are identified as gifted. The article is informed by findings from a doctoral research project (Wong, 2018), a study that drew on the professional and personal experiences of members of a Facebook group dedicated to the exploration of different constructions of giftedness. Two key conclusions were reached: first, that the "gifted mind" is often described in ways, such as sensitive or intense, which might not immediately be recognised or acknowledged as characteristics of giftedness; second, that unhelpful constructions of giftedness appear to have an impact on the mental and emotional wellbeing of gifted individuals. The implications of these findings suggest the need for counsellors and other helping professionals to have greater awareness of the meanings attributed to individual giftedness and to establish a safe space in which to work effectively with gifted young people, their families and whānau. [ABSTRACT FROM AUTHOR] Copyright of New Zealand Journal of Counselling is the property of New Zealand Association of Counsellors and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Lethargic Research Projects: Student-supervisor’s Dilemmas in Managing Research Projects

Starting an academic research project is an exciting journey which students approach with high zeal, excitement and passion. Eventually, the excitement reduces; very few complete on time, a sizable number abandon their studies and others drag on for long beyond the allowable academic time. In fact, most of the students end up applying for extension of time before they are deregistered. On estimate, only 10% of those who begin their PhD journey are able to complete in an average 4 years’ time. This paper analyzed the dilemmas students go through in their research process and the challenges supervisors meet in handling doctoral research projects. The study employed an exploratory design. Self-administered questionnaires were used on 42 respondents who included; PhD students on a research project, PhD student supervisors and PhD holders who had undertaken a research project. Data analysis was done concurrently with data gathering using content analysis method. The study findings indicated that supervisor challenges are mainly institutional constructed, while students recounted lack of clear guidance and orientation on the research process, attributed to both the institution and supervisor. Mutually, there is a tendency to assume that both parties have a clear familiarity with the study process. The study recommends the need for attention in; planning, design and orientation of both students and supervisors in managing academic research projects specifically, outlining expected milestones at each level. The study designed a triad supervisory model that can be adopted by institutions of higher learning in Africa to improve graduate rates, solve the student-supervisor challenges and improve PhD quality of research.

干旱胁迫对群众杨光合特性与器官干物质分配的影响

PDF HTML阅读 XML下载 导出引用 引用提醒 干旱胁迫对群众杨光合特性与器官干物质分配的影响 DOI: 10.5846/stxb201901270203 作者: 作者单位: 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（31400527，31700534）；山西省应用基础研究项目（201701D221190）；山西农业大学引进人才博士科研启动项目（2013YJ18） Effects of water stress on leaf gas exchange and biomass allocation of Populus×popularis ‘35-44’ cuttings Author: Affiliation: Fund Project: National Natural Science Foundation of China (NSFC)、Shanxi applied basic research project、Shanxi agricultural university introduction of doctoral research projects 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:土壤干旱是北方地区杨树人工林生长和生态效益的重要限制因子。以群众杨（Populus×popularis'35-44’）扦插苗为研究材料，采用盆栽称重法控制土壤水分，设置正常供水、中度干旱、重度干旱3种水分梯度。分别于2016年9月与2017年9月测定叶片气体交换参数、各器官干重、根冠比、叶经济性状等指标，研究了持续2年干旱胁迫下群众杨扦插苗光合特性与器官干物质分配的变化规律，分析了土壤干旱程度、树龄在"小老树"形成中的作用过程。2016年与2017年中度、重度干旱胁迫下功能叶净光合速率（Pn）受到非气孔限制，与正常供水相比分别降低了36.08%、56.42%；18.47%、5.13%。第一年干旱胁迫下群众杨气孔导度（Gs）和蒸腾速率（Tr）显著降低；第二年干旱胁迫下Gs与正常供水无显著差异，而Tr显著提高，有利于叶片C、N元素的运输分配进而维持较高的Pn。第一年随干旱胁迫程度加剧，群众杨叶片C/N显著提高，光合产物分配趋向于叶器官。第二年中度干旱胁迫下叶片C/N与正常供水相比无显著差异，各器官干重下降幅度均低于2016年，而根冠比显著增加，表明其光合产物主要用于地下部构建以适应中度干旱环境；持续重度干旱则光合产物向茎中的分配比例提高。干旱胁迫导致群众杨功能叶水分利用效率（WUE，Water use efficiency）与光合氮利用效率（PNUE，Photosynthetic nitrogen use efficiency）显著降低，整株氮利用效率（NUE，Whole plant nitrogen use efficiency）显著提高。严重土壤干旱下叶片耗水增强、PNUE下降以及茎木质部碳投资增加可能是群众杨小老树形成的重要原因。 Abstract:Soil water content is a key limiting factor to development and ecological function of artificial poplar plantations in semi-arid area of northern China. To examine the effects of soil drought on a poplar variety Populus×popularis ‘35-44’, 3 soil water levels, i.e., normal (75%±5% of field capacity), moderate drought (50%±5%) and severe drought (25%±5%), were set up using 1 year old cutting seedlings grown in pots. We measured leaf gas exchange parameters, organ dry mass and leaf economic traits both in September 2016 and September 2017 to analyze interannual changes in leaf gas exchange and biomass allocation in an attempt to elucidate the effects of soil water stress and ageing in formation of the "old dwarf trees" phenomenon. Compared with seedlings grown at the normal soil water level, leaf net photosynthetic rates (Pn) of seedlings grown at moderate and severe soil drought levels were reduced by 36.08% and 56.42% in 2016 respectively and also 18.47% and 5.13% in 2017 respectively, mainly due to non-stoma limitation. In first year of soil water drought treatment, stomatal conductance (Gs) and transpiration rate (Tr) of seedlings grown at both soil drought levels decreased significantly. However, no significant decrease of Gs at both soil drought levels were found in second year, while Tr increased at both drought levels significantly, which could be beneficial to transportation of C and N to leaves and therefore maintenance of Pn. In first year of treatment, with increasing severity of soil drought, leaf C/N ratio increased significantly and more biomass was allocated to foliage. However, no significant differences were found in leaf C/N ratio between normal soil water level and moderate soil drought level in second year of treatment, while the decreases of all component biomass at moderate soil drought level in 2017 were less than those in 2016 with a significantly higher root-shoot ratio, indicating that more dry matter were allocated to underground for root construction in acclimation to moderate soil drought. In comparison, more dry matter were allocated to stem at severe soil drought level. After two years of soil drought treatment, water use efficiency (WUE) and photosynthetic nitrogen use efficiency (PNUE) of functional leaves of seedlings decreased significantly, but nitrogen use efficiency at whole plant level (NUE) increased significantly. Increased leaf water consumption, decreased PNUE and increased stem xylem C input of Populus×popularis ‘35-44’ seedlings at severe soil drought level may be the main drivers of "old dwarf trees" phenomenon. 参考文献 相似文献 引证文献