Structural equation modelling

结构方程模型
  • 文章类型: Journal Article
    关于这个问题的知识是什么?:自杀是一个重要的健康问题,近年来在世界各地都很普遍。护理专业学生是自杀的高危人群。应调查影响自杀风险的因素,并将其纳入精神病护理干预措施。心理疼痛是自杀风险的诱因。研究集中在自杀风险与心理痛苦之间的关系。研究影响这种关系的调节因素的研究是有限的。论文对现有知识有什么贡献?:通过结构方程模型,心理弹性调解对自杀风险和心理痛苦关系的影响已被证明。在从心理痛苦到自杀的过程中,弹性具有缓冲作用,具有中介作用,这个过程可以通过发展韧性来防止。实践的含义是什么?:弹性可以作为自杀的保护因素添加到精神病护理实践中。可以在精神病护理实践中增加加强韧性的举措。这样,心理痛苦和自杀的风险可以通过加强韧性来降低。心理疼痛可以作为自杀的危险因素添加到精神病护理的实践中。在精神病护理实践的范围内,护理干预可以结构化评估和减少心理痛苦。为护理专业学生创建的自杀预防计划中,可以增加对管理和应对心理痛苦的策略的干预措施以及增强韧性的举措。
    导言:护生是自杀的高危人群。精神科护士应调查自杀的危险因素。
    目的:本研究旨在探讨心理弹性在护理专业学生自杀风险与心理疼痛关系中的中介作用。
    方法:这项横断面研究于2021年3月至5月间在Akdeniz大学护理学院对619名学生进行了研究。描述性信息表单,自杀概率量表,使用心理疼痛量表和简短弹性量表收集数据。采用结构方程模型方法考察了弹性在自杀风险与心理痛苦关系中的中介作用,并进行路径分析。根据STROBE进行研究报告。
    结果:在心理疼痛和自杀风险之间发现了韧性的半中介效应,效应大小被确定为宽(0.57)。
    结论:心理弹性可以被认为是精神病护理实践中预防自杀的保护因素。
    结论:心理弹性对心理疼痛和自杀风险之间的关系有影响。
    这项研究的结果可以指导精神科护理实践降低和预防自杀风险。
    WHAT IS KNOWN ON THE SUBJECT?: Suicide is an important health problem that has been common all over the world in recent years. Nursing students are a high-risk group for suicide. Factors affecting suicide risk should be investigated and included in psychiatric nursing interventions. Psychological pain is a predisposing condition for suicide risk. Studies focus on the relationship between suicide risk and psychological pain. Studies examining the moderator factors affecting this relationship are limited. WHAT THE PAPER ADDS TO EXISTING KNOWLEDGE?: By means of the structural equation model, the effect of resilience mediation on the relationship of suicide risk and psychological pain has been shown. In the process of going from psychological pain to suicide, resilience takes on a buffer function with its mediating effect, and this process can be prevented by the development of resilience. WHAT ARE THE IMPLICATIONS FOR PRACTICE?: Resilience can be added as a protective factor for suicide to the practices of psychiatric nursing. Initiatives to strengthen resilience can be added to psychiatric nursing practices. In this way, psychological pain and the risk of suicide can be reduced by strengthening resilience. Psychological pain can be added as a risk factor for suicide to the practices of psychiatric nursing. Within the scope of psychiatric nursing practices, nursing interventions can be structured to assess and reduce psychological pain. Interventions on strategies to manage and cope with psychological pain and initiatives to strengthen resilience can be added to suicide prevention programs created for nursing students.
    UNASSIGNED: INTRODUCTION: Nursing students are a high-risk group for suicide. Psychiatric nurses should investigate risk factors for suicide.
    OBJECTIVE: The aim of this study was to examine the resilience mediation effect in the relationship of suicide risk and psychological pain in nursing students.
    METHODS: This cross-sectional study was conducted between March and May 2021 with 619 students in the Akdeniz University Faculty of Nursing. A Descriptive Information Form, the Suicide Probability Scale, the Psychache Scale and the Brief Resilience Scale were used to collect data. The structural equation model approach was used to examine the resilience mediating effect on the relation between suicide risk and psychological pain, and Path Analysis was performed. The reporting of the study was conducted according to STROBE.
    RESULTS: A semi-mediatory effect of resilience was found between psychological pain and the risk of suicide, and the effect size was determined to be broad (0.57).
    CONCLUSIONS: Resilience can be considered as a protective factor for suicide prevention in psychiatric nursing practices.
    CONCLUSIONS: Resilience has an effect on the relationship between psychological pain and suicide risk.
    UNASSIGNED: The results of this study may guide psychiatric nursing practices in reducing and preventing suicide risk.
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  • 文章类型: Journal Article
    背景:超过一半的新癌症病例发生在老年人中。老年癌症患者特别有身体风险,心理存在的或社会家族的痛苦,定义为严重健康相关的痛苦(SHS)的概念。
    目的:为了评估身体的直接和间接影响,癌症可治疗性的痛苦的心理存在性和社会家族性维度,老年癌症患者的支持治疗需求和12个月死亡率.
    方法:我们从老年癌症患者队列中纳入了70岁及以上的癌症患者(ELCAPA,Ile-de-France),2007年至2019年在癌症治疗前进行老年评估。结构方程模型检查了SHS维度(潜在变量)之间的直接和间接关系,患者特征(年龄,性别,肿瘤位置和转移状态,合并症,护理期),和结果。
    结果:分析包括4,824例患者(平均年龄:82.2±4岁;女性:56%;主要癌症部位:乳腺癌[22.3%],结直肠[15.2%],前列腺[8.5%],和肺[6.8%];转移性癌症:46%)。身体上的痛苦对癌症的治疗有直接的贬损作用,和死亡率(标准化系数[SC]=0.12[P<0.001],SC=0.27[P<0.001],分别)。心理存在和社会家族性痛苦通过降低癌症可治疗性对生存率有间接的贬损作用(SC=0.08[P<0.001],SC=0.03[P<0.001],分别)。心理存在维度对支持性护理需求具有主要的直接影响(SC=0.35[P<0.001]),并且与身体痛苦相关。
    结论:身体痛苦对生存有直接的贬损作用。由于较差的癌症可治疗性,所有维度都间接降低了生存率。我们的发现支持对身体和心理存在的痛苦的伴随管理。
    BACKGROUND: More than half of new cancer cases occurred in older adults. Older patients with cancer are particularly at risk of physical, psycho-existential or socio-familial suffering as defined by the concept of Serious Health-related Suffering (SHS).
    OBJECTIVE: To assess the direct and indirect effects of physical, psycho-existential and socio-familial dimensions of suffering on cancer treatability, supportive care needs and 12-month mortality in older patients with cancer.
    METHODS: We included patients with cancer aged 70 years and over from the Elderly Cancer Patients cohort (ELCAPA, Ile-de-France), referred for geriatric assessment between 2007 and 2019 before cancer treatment. Structural equation modelling examined the direct and indirect relationships between SHS dimensions (latent variables), patients\' characteristics (age, sex, tumor location and metastatic status, comorbidity, period of care), and outcomes.
    RESULTS: The analysis included 4,824 patients (mean age: 82.2 ± 4 years; women: 56%; main cancer sites: breast [22.3%], colorectal [15.2%], prostate [8.5%], and lung [6.8%]; metastatic cancer: 46%). Physical suffering had direct pejorative effects on cancer treatability, and mortality (standardized coefficient [SC] = 0.12 [P<0.001], SC = 0.27 [P<0.001], respectively). Psycho-existential and socio-familial sufferings had indirect pejorative effects on survival through decreased cancer treatability (SC = 0.08 [P<0.001], SC = 0.03 [P<0.001], respectively). Psycho-existential dimension had the main direct effect size on supportive care needs (SC = 0.35 [P<0.001]) and was interrelated with physical suffering.
    CONCLUSIONS: Physical suffering has direct pejorative effect on survival. All dimensions indirectly decrease survival due to poorer cancer treatability. Our findings support concomitant management of physical and psycho-existential suffering.
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  • 文章类型: Journal Article
    背景:本研究的目的是通过结构方程(SEM)建模方法,使用路径分析,调查妇女受教育和获得熟练助产士(SBA)服务之间的关联。
    方法:在SEM分析中使用了来自2017-18年孟加拉国最新人口和健康调查的4946名母亲的样本。在分娩时使用SBA服务已在最后一次分娩时使用SBA。在提取相关变量并清理原始调查数据后,一项4,946名女性的子样本符合本研究的分析条件.
    结果:SEM模型揭示了直接,间接,以及妇女在获得SBA服务方面的教育和赋权的中介作用。受过教育的妇女在决策方面拥有更大的自主权,不易遭受家庭暴力,因此在分娩期间更有可能获得SBA服务(β=0.094,p<0.001)。此外,初婚年龄,媒体曝光,丈夫的教育,医疗保健可及性,决策标记,家庭财富指数介导了教育与SBA服务使用之间的关系。
    结论:孟加拉国,一个需要改善若干社会和健康指数以实现可持续发展目标的国家,需要优先考虑妇女的教育,以增加获得孕产妇保健服务的机会。健康教育和大众媒体驱动的意识可能是LMICs增加SBA覆盖率的潜在干预措施。
    BACKGROUND: The objective of this study was to investigate the associations between women\'s education and access to skilled birth attendant (SBA) services mediated by factors of women\'s empowerment and sociodemographic characteristics using a path analysis through a structural equation (SEM) modelling approach.
    METHODS: A sample of 4946 mothers from the most recent Bangladesh Demographic and Health Survey of 2017-18 was used in the SEM analysis. Accessing SBA service at childbirth was operationalized as utilizing SBA during last childbirth. After extracting the relevant variables and cleaning the original survey data, a subsample of 4,946 women were eligible for analysis in the current study.
    RESULTS: The SEM model revealed strong evidence of direct, indirect, and mediating effects of both education and empowerment of women in accessing SBA services. Educated women have more autonomy in decision making and are less susceptible to family violence and consequently are more likely to access SBA services during childbirth (β = 0.094, p < 0.001). In addition, age at first marriage, media exposure, husband\'s education, healthcare accessibility, decision marking, and household wealth index mediated the relationship between education and SBA service use.
    CONCLUSIONS: Bangladesh, a country that needs to improve several societal and health indices to achieve the Sustainable Development Goals, need to prioritize women\'s education to increase accessibility to maternal healthcare services. Health education and mass-media-driven awareness may be potential interventions for LMICs to increase SBA coverage.
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  • 文章类型: Journal Article
    背景:心脏代谢疾病是一个主要的全球健康问题。这项研究旨在确定有针对性的干预措施的领域,并调查社会经济地位和生活方式作为美国背景下的潜在调解人的影响。
    方法:我们的研究分析了健康信息国家趋势调查5的数据,这是美国国家癌症研究所的一项全国性调查。使用标准化的量表和问题,我们检查了心脏代谢疾病的结果,生活方式因素,以及美国18岁以上非制度化平民的社会经济地位。我们使用结构方程模型对数据进行了分析。
    结果:我们的研究结果表明,社会经济地位和生活方式显著预测心脏代谢疾病的结局。然而,我们的分析不支持生活方式作为社会经济地位和心脏代谢疾病之间关联的主要调节因素,这表明其他因素可能会显著影响这种关系。
    结论:心脏代谢疾病需要针对社会经济因素的生活方式和结构性干预措施。政策制定者必须考虑多方面因素,检测,并有效和公平地管理这些疾病。
    BACKGROUND: Cardiometabolic diseases are a major global health concern. This study aims to identify areas for targeted interventions and investigate the impact of socioeconomic status and lifestyle as a potential mediator in the context of the US.
    METHODS: Our study analyzed data from the Health Information National Trends Survey 5, a nationwide survey by the National Cancer Institute. Using standardized scales and questions, we examined cardiometabolic disease outcomes, lifestyle factors, and socioeconomic status of non-institutionalized civilians aged 18 + in the US. We analyzed the data using structural equation modelling.
    RESULTS: Our findings show that socioeconomic status and lifestyle significantly predict cardiometabolic disease outcomes. However, our analysis did not support lifestyle as the primary mediating factor in the association between socioeconomic status and cardiometabolic diseases, suggesting that other factors may significantly influence this relationship.
    CONCLUSIONS: Cardiometabolic diseases require lifestyle and structural interventions addressing socioeconomic factors. Policymakers must consider multifaceted factors to prevent, detect, and manage these diseases effectively and equitably.
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  • 文章类型: Journal Article
    研究表明,丧亲后应对策略可以是适应性的,也可以是适应不良的。了解哪些策略导致较差的结果是一个重要的临床和理论问题,有可能指导干预。牛津悲伤-应对策略量表是根据对有或没有长期悲伤障碍(PGD)的丧亲者的访谈而开发的,以评估丧亲后适应不良的认知和行为策略的频率。使用探索性和验证性因素分析评估了因子和心理测量效度(N=676)。使用三波交叉滞后面板模型(N=275)来评估该工具在解释PGD症状方面的预测有效性。结果支持四因素解决方案(避免,接近寻求,照明损失,不公正反省)具有良好的心理测量学特性。OG-CS在短期(6-12个月)和长期(12-18个月)预测PGD的前瞻性症状,控制基线症状和自相关。子量表分析表明,应对策略的使用在短期和长期均可预测ICD-11PGD。然而,在悲伤过程的早期,避免并不能预测结果.在6-12个月,避免预测PGD在12-18个月。
    Research indicates that post-bereavement coping strategies can be adaptive or maladaptive. Understanding which strategies lead to poorer outcomes is an important clinical and theoretical question with the potential to guide intervention. The Oxford Grief - Coping Strategies scale was developed from interviews with bereaved people with and without prolonged grief disorder (PGD) to assess the frequency of maladaptive cognitive and behavioural strategies after bereavement. Factorial and psychometric validity were assessed using exploratory and confirmatory factor analysis (N = 676). A three-wave cross-lagged panel model (N = 275) was used to assess the predictive validity of the tool in explaining symptoms of PGD. Results supported a four-factor solution (Avoidance, Proximity Seeking, Loss Rumination, Injustice Rumination) with good psychometric properties. The OG-CS predicted prospective symptoms of PGD in the short-term (6-12 months) and long term (12-18 months), controlling for baseline symptoms and autocorrelations. Subscale analyses demonstrated that the use of coping strategies predicted ICD-11 PGD in both the short-term and the long-term. However, avoidance was not predictive of outcomes early in the grieving process. At 6-12 months, avoidance predicted PGD at 12-18 months.
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  • 文章类型: Journal Article
    作为近年来迅速发展的信息技术,隐喻极大地改变了我们的生活方式,学习,和工作。为了加快隐喻技术的使用,促进用户对隐喻的接受,本研究构建了基于流量理论和使用满意度理论的集成模型,进一步探讨影响用户接受隐喻的因素。通过情境问卷调查共获得有效问卷265份。考虑到单一分析技术的局限性,我们使用两种方法来分析数据。其中,对称PLS-SEM方法主要用于分析单变量的影响,而非对称fsQCA方法用于分析变量的综合影响。PLS-SEM结果表明,流动经验,感知风险,个人创新直接影响用户对隐喻的接受度,而感知成本没有影响。同时,交互性,存在,社会存在间接影响用户对隐喻的接受度,而信息和享受没有间接影响。重要的是,FsQCA推出了五种配置,从而使用户对metaverse的接受度很高,以及导致负面接受的六种配置。PLS-SEM和fsQCA的补充发现为理论理解和实际实施提供了有价值的见解。
    As a rapidly developing information technology in recent years, the metaverse has significantly transformed how we live, learn, and work. In order to accelerate the use of metaverse technology and promote users\' acceptance of the metaverse, this study constructs an integrated model based on flow theory and use and satisfaction theory, to further explore the factors affecting users\' acceptance of the metaverse. A total of 265 valid questionnaires were obtained through a situational questionnaire survey. Considering the limitations of a single analysis technique, we use two methods to analyze the data. Among them, the symmetric PLS-SEM method is mainly used to analyze the effects of single variables, while the asymmetric fsQCA method is used to analyze the combined effects of variables. The PLS-SEM results manifest that flow experience, perceived risk, and personal innovation directly influence users\' acceptance of the metaverse, while perceived cost has no effect. Simultaneously, interactivity, presence, and social presence indirectly affect users\' acceptance of the metaverse, while informativeness and enjoyment have no indirect effect. Significantly, fsQCA unveiled five configurations resulting in a high user acceptance of the metaverse, as well as six configurations leading to a negative acceptance. The complementary findings from PLS-SEM and fsQCA offer valuable insights for both theoretical understanding and practical implementation.
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  • 文章类型: Journal Article
    背景:本研究的目的是通过结构方程模型在内科接受治疗的患者中证明个性化护理对患者满意度和对护士信任的影响。
    方法:这项研究是描述性的,对2023年1月至4月在教育研究医院内部入院服务接受治疗的患者进行了探索性和横断面研究.根据样本计算,确定至少有238名患者需要纳入研究,286例符合纳入标准并同意参与研究的患者组成了研究样本.使用“患者识别表”收集数据,“个性化护理量表-患者版本”,“纽卡斯尔护理满意度量表”和“护士信任量表”。
    结果:发现对支持个性的护理行为的认识水平为2.71±0.99,对个性的认识水平为2.88±0.99,平均护理满意度为77.17±12.67,对护士的平均信任水平为21.92±3.04。据确定,随着患者对支持个性的护理行动的意识和他们对护理中个性的感知增加,他们对自己的护理更加满意,对护士也更加信任。
    结论:发现接受个性化护理的患者对护士的满意度和信任度更高。此外,据观察,随着参与者对他们护理的满意度增加,他们对护士的信任也增加了。
    BACKGROUND: The aim of this study was to demonstrate the impact of individualized nursing care on patient satisfaction and trust in nurses through structural equation modelling in patients receiving treatment in internal clinics.
    METHODS: The study is a descriptive, exploratory and cross-sectional research conducted with patients receiving treatment in the internal admission services of an educational research hospital between January and April 2023. According to sample calculations, it was determined that a minimum of 238 patients needed to be included in the study, and 286 patients who met the inclusion criteria and agreed to participate in the research formed the study sample. Data were collected using the \'Patient Identification Form\', \'Individualized Care Scale-Patient Version\', \'Newcastle Nursing Care Satisfaction Scale\' and the \'Trust in Nurses Scale\'.
    RESULTS: The level of awareness of nursing actions supporting individuality was found to be 2.71 ± 0.99, the level of perceiving individuality was 2.88 ± 0.99, the average level of nursing care satisfaction measured 77.17 ± 12.67 and the average level of trust in nurses was 21.92 ± 3.04. It was determined that as patients\' awareness of nursing actions supporting individuality and their perception of individuality in care increased, they remained more satisfied with their care and had greater trust in nurses.
    CONCLUSIONS: Patients who perceived receiving individualized care were found to have higher levels of patient satisfaction and trust in nurses. Additionally, it was observed that as participants\' satisfaction with their care increased, their trust in nurses also increased.
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  • 文章类型: Journal Article
    情绪劳动是人们根据职业要求调节情绪的过程。研究始终将情感劳动与更高水平的倦怠联系起来。然而,我们认为这些文献可能被测量误差混淆。我们试图验证英语对最近的情绪劳动措施的适应性,该措施解决了研究不足的样本中存在的测量误差问题,这些风险是职业倦怠的心理学家提供心理治疗的风险。我们将此测量称为珀斯情绪劳动量表(PELS),该量表基于Andela及其同事(2015年)的原始测量。此外,我们探讨了在这个群体中,情绪劳动的哪些因素对职业倦怠的贡献最大。我们招募了418名心理学家(81.58%为女性,17.46%男性,0.96%的非二进制)在澳大利亚(N=362,86.60%)和新西兰(N=56,13.40%)。因子分析和相关分析检验了PELS的信度和效度。分层多元回归分析探讨了情绪劳动的每个组成部分是否对情绪耗竭(EE)做出了独特的方差。发现了对PELS心理测量特性的初步支持,并且发现情感不和谐是唯一导致EE的情感劳动因素。我们展示了对PELS的初步心理测量支持,但建议进一步发展,并认为我们的发现对研究和实践具有独特的意义。
    Emotional labour is the process by which people regulate emotions congruently with occupational requirements. Research consistently links emotional labour to greater levels of burnout. However, we argue this literature is potentially confounded by measurement error. We sought to validate an English adaptation of a recent emotional labour measure that addresses measurement error concerns in an under-researched sample at risk of burnout-psychologists providing psychotherapy. We termed this measure the Perth Emotional Labour Scale (PELS) which is based upon Andela and colleagues\' (2015) original measure. Additionally, we explored what factors of emotional labour contributed most to burnout in this group. We recruited 418 psychologists (81.58% female, 17.46% male, 0.96% non-binary) across Australia (N = 362, 86.60%) and New Zealand (N = 56, 13.40%). Factor analyses and correlational analyses examined the PELS\' reliability and validity. Hierarchical multiple regression analysis explored whether each component of emotional labour contributed unique variance to emotional exhaustion (EE). Preliminary support for the PELS\' psychometric properties was found and emotional dissonance was found to be the only emotional labour factor that uniquely contributed to EE. We demonstrate preliminary psychometric support for the PELS but recommend further development and argue our findings have unique implications for research and practice.
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  • 文章类型: Journal Article
    目的:体力活动可能对学龄前儿童的心理健康和自我调节产生积极影响。学前环境为儿童提供了符合体育活动指南的机会,并可以通过工作人员提供体育活动的培训来改善。这项研究研究了学龄前工作人员的体育活动专业发展对学龄前儿童的代理测量心理健康和自我调节的影响。
    方法:总共,来自46所幼儿园的1265名儿童被随机分为干预组或对照组。干预措施嵌套在两个同时实施的级别中:学前级别,作为一个专业的发展,在那里幼儿园进行发展工作,和孩子的水平,工作人员与谁一起实施了四个核心组成部分的体育活动。使用ANCOVA模型通过结构方程建模对数据进行分析,潜在结果因素为:情绪问题,同行问题,多动症,力量和困难问卷中的亲社会行为;和认知,情感,和行为自我调节来自儿童自我调节和行为问卷。
    结果:没有观察到干预效果(标准化效果大小-0.195-0.145,p值0.118-0.893)。二次分析表明,最初具有较高亲社会行为和行为自我调节能力的儿童从干预中获得了积极的好处(分别为p=0.035和p=0.047)。
    结论:在18个月后,ACTNOW干预对学龄前儿童的心理健康或自我调节没有影响,除了对最初具有最高亲社会行为和行为自我调节的儿童的影响。尽管专业发展比以前的研究更广泛,但可能不足以改变幼儿园的体育锻炼方式。
    背景:www.
    结果:gov标识符NCT04048967。
    OBJECTIVE: Physical activity may have positive effects on preschoolers\' mental health and self-regulation. The preschool setting provides children with opportunities to meet physical activity guidelines and could improve with staff training in delivering physical activity. This study examined the effect of physical activity professional development for preschool staff on preschoolers\' proxy-measured mental health and self-regulation.
    METHODS: In total, 1265 children from 46 preschools were cluster randomised to either the intervention or the control group. The intervention was nested within two levels implemented concurrently: the preschool level, formed as a professional development where preschools conducted development work, and the child level, with whom the staff implemented physical activity with four core components. Data were analysed using an ANCOVA model through structural equation modelling with latent outcome factors of: emotional problems, peer problems, hyperactivity, and prosocial behaviour from the Strength and Difficulties Questionnaire; and cognitive, emotional, and behavioural self-regulation from the Child Self-regulation and Behaviour Questionnaire.
    RESULTS: No effects of the intervention (standardised effect sizes -0.195-0.145, p-values 0.118-0.893) were observed. Secondary analysis showed that children with initially high prosocial behaviour and behavioural self-regulation positively benefited from the intervention (p = 0.035 and p = 0.047, respectively).
    CONCLUSIONS: The ACTNOW intervention had no effects on preschoolers\' mental health or self-regulation after 18 months, besides effects for children with initially the highest prosocial behaviour and behavioural self-regulation. Although the professional development was more extensive than previous studies it may have been insufficient to change the preschools physical activity practices.
    BACKGROUND: www.
    RESULTS: gov identifier NCT04048967.
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  • 文章类型: Journal Article
    由于地中海地区的气候变化,草原生态正在恶化,生物多样性和生态系统服务也在下降。了解与可用水相关的土壤特性与干旱增加之间的反馈机制是保护草地生态系统的关键组成部分。结构方程模型用于探索对与可用水相关的土壤性质与干旱增加之间的反馈机制的深刻理解。在大多数情况下,植被斑块与可用水分有关的土壤性质明显高于斑块间。与补丁间相比,粉砂和粘土含量的细部分,土壤有机碳,饱和导水率,植被斑块下的可利用水量增加3.79%-7.64%,31.08%-37.64%,96.65%-141.14%,和2.63%-9.21%,分别,在灰岩和云母片岩岩性下。粉土和粘土含量的细部分,土壤有机碳,可用水比植被对干旱指数的反应更快,而饱和导水率比干旱指数对植被斑块的响应更大。这些复杂的关系表明,植被模式(0.09)和干旱指数(0.21-0.38)显着影响了可利用的水。土壤质地对有效水具有显着的直接影响(0.43-0.53)。干旱的增加会增强土壤水分有效性的对比,同时削弱植被斑块和斑块间饱和导水率的对比。除植被格局和干旱指数外,可利用水还受到许多方面的控制。了解这些关系有助于预测和减轻气候变化对与可用水相关的土壤特性的影响。该研究为气候变化下干旱和半干旱草原生态系统中与可用水相关的各种土壤性质的植被格局和干旱指数的机制提供了新的视角。
    Grassland ecology is deteriorating along with a fall in biodiversity and ecosystem services as a result of climate change in the Mediterranean regions. Understanding the mechanism of feedback between soil properties related to available water and increasing aridity is a key component of preserving grassland ecosystems. Structural equation modelling was used to explore a deep understanding of the underlying mechanisms of the feedback between soil properties related to available water and increasing aridity. In most cases, vegetation patches had significantly higher soil properties related to available water than inter-patches. Compared to inter-patches, the fine fractions of silt and clay content, soil organic carbon, saturated hydraulic conductivity, and available water under vegetation patches increased by 3.79%-7.64%, 31.08%-37.64%, 96.65%-141.14%, and 2.63%-9.21%, respectively, under limestone and mica schist lithologies. The fine fractions of silt and clay content, soil organic carbon, and available water were more responsive to the aridity index than the vegetation patch, while saturated hydraulic conductivity was more responsive to the vegetation patch than the aridity index. These complex relationships demonstrated that the available water was significantly positively affected by the vegetation pattern (0.09) and the aridity index (0.21-0.38). Soil texture had a significantly direct effect (0.43-0.53) on available water. Increasing aridity would strengthen the contrast in soil water availability while weakening the contrast in saturated hydraulic conductivity between vegetation patches and inter-patches. Available water was controlled by many aspects except vegetation pattern and aridity index. Understanding these relationships helped in predicting and mitigating the impacts of climate change on soil properties related to available water. The study offered fresh perspectives on the mechanism of vegetation pattern and aridity index on the various soil properties related to available water in arid and semiarid grasslands ecosystems under climate change.
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