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《果树学报》2001—2006年主要文献评价指标分析 总被引:2,自引:1,他引:1
运用文献计量学的方法,对2001—2006年《果树学报》的载文量、基金论文比、参考文献量、总被引频次、影响因子、普赖斯指数等主要文献评价指标进行了分析。结果表明,《果树学报》平均年载文量为146篇,基金论文比为67%,引文率为96.55%,参考文献量为15.25条/篇,总被引频次为549.33,影响因子为0.617,普赖斯指数为44.1%。除普赖斯指数稍低外,其他指标均显著高于《中国科技期刊引证报告》(CJCR)中的平均值,说明《果树学报》所载论文质量较高,是我国园艺学领域最重要的权威性核心期刊之一。 相似文献
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《园艺学报》1991~1995年载文统计分析李亚新赵华韩旭陈欣业(园艺学报编辑部,北京100081)关键词园艺学报;载文;统计分析StatisticsAnalysisonPapersinActaHorticulturaeSinicain1991~19... 相似文献
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随着"两山理论"的提出,绿色环保理念的盛行,森林生态旅游俨然成为行业和学术界关注的重点领域.以近30年森林生态旅游相关期刊、发表论文等文献为基础,对筛选的226篇期刊论文文献进行归纳整理,从国内文献载文时间与数量、期刊分布来源、研究主题、相关研究单位以及研究内容等5个方面进行综合分析.在资料分析基础上,通过理清相关研究... 相似文献
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以《北方园艺》载文在WOS的引文为研究对象,利用文献分析方法,对被引文献及施引文献进行全景揭示,包括被引文献的产出年代、高被引论文作者及机构;施引文献的来源期刊、国家、机构,提出刊载新技术、新方法等研究热点及综述,可进一步提高期刊的质量及其在学科领域的影响力。 相似文献
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Urban greenspace (UGS) is important for human wellbeing, particularly physical and mental health, and is claimed to support social cohesion. However, the expansion and densification of urban centres in recent decades has occurred largely at the expense of UGS. This risks its attractiveness for users. Although recent research has identified various factors that influence the use of UGS in different contexts, few studies have taken an explicit, bottom-up approach to understand which factors constrain willingness to use it. This study analyses responses from an online survey in Sweden (N = 2806) to identify the main constraints to UGS usage, and for whom these are constraints. Respondents could select from 22 different types of constraints – relating to incivilities, management, accessibility and availability, safety, and personal issues. Respondents could also provide comments to identify additional constraints. Incivilities were the most perceived problem. For example, litter was selected by 53% of respondents, while vandalism was selected by 24%. At the same time, many respondents perceived few or no constraints – 59% stated that nothing prevented them from using UGS, while 35% stated that they saw no problems. Safety-related and accessibility/availability constraints were not strongly identified although many respondents commented that UGS in Sweden is inadequate given the large number of users, and that the UGS that people want to use the most is often inaccessible without a car. Multiple binary logistic regression was used to investigate relationships between perceptions of constraints and fourteen predictor variables. Odds ratios were used to determine whether significant (p < 0.05) relationships were meaningful. Our findings show that different groups have starkly divergent perceptions of constraints relating to UGS. Several key factors – including age, self-reported nature-connectedness, distance to UGS, and frequency of use – were associated with a heightened likelihood of perceiving different groups of constraints. However, relationships between constraints and factors relating to environmental justice were not straightforward. These findings indicate the complexity of UGS planning challenges relating to densification, the New Urban Agenda and promotion of societal benefits, and a need to further integrate multiple user perspectives, especially of younger adults and infrequent users. 相似文献
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粗毛纤孔菌的研究进展 总被引:1,自引:0,他引:1
以国内外发表的文献为依据,从分类学地位、生物学特性、化学成分、药理作用方面综述了粗毛纤孔菌(Inonotus hispidus)的研究进展,并对现存问题和应用前景进行展望。 相似文献
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Landscape Ecology - An important part of landscape ecology is to identify relationships between landscape characteristics and ecological processes. One common approach to this is relating raster... 相似文献
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This research attempts to analyze the emergence and development of urban forest policies at the national and local levels in the Republic of Korea. The Policy Arrangement Approach (PAA) is applied as an analytical frame to analyze changes in the urban forest policies of the central and local governments. The PAA offers four dimensions that can be used to describe and analyze the policy process: actors, power, rules of the game and discourse. The research findings indicate that a discourse on sustainable development in which the social functions of forests are taken into account substantially contributed to the creation of urban forest policies. This discourse contributed to the activities of actors and their power relationships and to the introduction of new rules relating to Korean urban forest management. In addition to public actors, private actors have also participated in creating and managing urban forests. Various partnerships among actors were formed for urban forest management. Civil society exercised its power to design and manage urban forests through increased voluntary participation. The legislation relating to urban forests functioned as a framework for urban forest policies at the national and local levels. Agreements acted as new rules governing the relationships among the actors who were involved in urban forest management. In conclusion, the four dimensions of policy arrangements relating to urban forest policy, and the interconnections among these dimensions, elucidate the emergence and dynamic development of urban forest management in the direction of governance at the national and local level in the Republic of Korea. In particular, discourse about forests was a substantive dimension of policy arrangements, and it influenced changes in the identity of the participating actors and their power. The discourse contributed to the establishment and development of rules for urban forest management. Thus this research provides strong evidence that the PAA helps understand dynamic changes of urban forest policy-making toward governance. 相似文献
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食用菌病毒病害研究进展 总被引:5,自引:0,他引:5
概述了食用菌病毒病的种类、危害特征、检测技术及防治措施等方面的研究现状,提出了食用菌病毒病研究中存在的问题,并展望了食用菌病毒病研究的发展趋势。 相似文献