首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 156 毫秒
1.
运用文献计量学的方法,选用2001-2007年《果树学报》的论文共1066篇,重点从载文量的时间分布、作者群的地域和所属单位分布、核心作者群的数量及论文作者的合著率等方面进行统计分析,从作者研究的角度对该刊作为果树届的名刊进行论证,得出《果树学报》近7年发展的一些规律,即载文量增加,载文信息增大,论文作者涉及地域渐广,核心作者群已形成,作者合作意识较强,平均合著率97.08%,合著率高。  相似文献   

2.
《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   

3.
李亚新  赵华 《园艺学报》1997,24(3):308-310
《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   

4.
以中国知网《中国期刊全文数据库》的数据为检索对象,对我国近十年来核桃论文总量、主题分布、核心作者群、载文期刊分布等方面进行检索、整理、汇总、筛选、排序,并进行统计计量分析,得出了近十年我国核桃研究的现状、研究热点和发展趋势。总体上看目前对核桃的研究热点是嫁接和品种,核桃病虫害防治技术研究有些薄弱,有待加强。  相似文献   

5.
张蒙 《现代园艺》2022,(9):60-63
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   

6.
中国园艺学会2011年学术年会论文摘要集(《园艺学报》2011年增刊)即日起征文,具体事项通知如下。栽培技术与生理、采后技术与生理等方面未曾发表过的研究论文摘要(不影响相关论文今后在《园艺学报》全文发表,恕不接收综述摘要和品种介绍文章)。  相似文献   

7.
王杏利  赵慧清 《北方园艺》2016,(10):198-201
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   

8.
中国园艺学会2011年学术年会论文摘要集(《园艺学报》2011年增刊)即日起征文,具体事项通知如下。栽培技术与生理、采后技术与生理等方面未曾发表过的研究论文摘要(不影响相关论文今后在《园艺学报》全文发表,恕不接收综述摘要和品种介绍文章)。  相似文献   

9.
中国园艺学会2011年学术年会论文摘要集(《园艺学报》2011年增刊)即日起征文,具体事项通知如下。栽培技术与生理、采后技术与生理等方面未曾发表过的研究论文摘要(不影响相关论文今后在《园艺学报》全文发表,  相似文献   

10.
正本刊暂时还未开通在线投稿,凡投到本刊电子邮箱的论文即视为论文全体著作权人同意将论文发表在《果树资源学报》上,并自录用之日起,将论文在全世界范围内的复制权、发行权、信息网络传播权和汇编权免费转让给《果树资源学报》编辑部。论文的著作权人保证:1)投稿论文是著作权人独立取得的原创性研究成果;论文内容不涉及国家机密;2)未曾以任何形式用任何文种在国内外公开发表过,并且以后也不以任何形式在  相似文献   

11.
发酵法生产虫草素研究进展   总被引:1,自引:0,他引:1  
综述液体和固体发酵法生产虫草素的研究状况,并展望其发展趋势.  相似文献   

12.
柱状田头菇研究进展   总被引:2,自引:0,他引:2  
对柱状田头菇(Agrocybe aegerita)的生物学特性、人工培养驯化及生物活性物质等方面进行了综述,旨在为柱状田头菇的进一步开发利用提供参考。  相似文献   

13.
中国奥德蘑属栽培研究进展   总被引:1,自引:0,他引:1  
奥德蘑(Oudemansiella)是著名的食药兼用菌,经济价值较高.对中国奥德蘑属的食药用价值和栽培研究进展进行综述,为相关研究人员提供参考.  相似文献   

14.
灵芝属分类学研究进展   总被引:2,自引:0,他引:2  
概述了形态学特征、同工酶技术以及分子生物学技术在灵芝分类上的应用现状,指出了灵芝分类中存在的问题,并提出了相应的对策。  相似文献   

15.
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   

16.
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   

17.
Riva  Federico  Nielsen  Scott E. 《Landscape Ecology》2020,35(7):1495-1504
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   

18.
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   

19.
食用菌中农药残留安全及风险预测   总被引:3,自引:0,他引:3  
概述食用菌农药残留风险评估和预测基础研究方面的国内外进展,对于开展相关研究、控制农药残留危害、确保食用菌产品安全和贸易具有积极的意义.  相似文献   

20.
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   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号