您现在的位置: 首页> 研究主题> 杨属

杨属

杨属的相关文献在1980年到2022年内共计172篇,主要集中在林业、植物学、轻工业、手工业 等领域,其中期刊论文100篇、会议论文67篇、专利文献6498篇;相关期刊62种,包括西北植物学报、植物分类与资源学报、甘肃林业科技等; 相关会议21种,包括第七届全国森林土壤学术讨论会、中国林学会第六届全国杨树学术讨论会、中国林学会第三届青年学术研讨会及成果展示会等;杨属的相关文献由342位作者贡献,包括刘军、张守攻、齐力旺等。

杨属—发文量

期刊论文>

论文:100 占比:1.50%

会议论文>

论文:67 占比:1.01%

专利文献>

论文:6498 占比:97.49%

总计:6665篇

杨属—发文趋势图

杨属

-研究学者

  • 刘军
  • 张守攻
  • 齐力旺
  • 刘寿坡
  • 宋文芹
  • 李秀兰
  • 陈成彬
  • 陈瑞阳
  • 韩素英
  • 张建国
  • 期刊论文
  • 会议论文
  • 专利文献

搜索

排序:

年份

    • 刘一凡; 冯俊鑫; 王斌强; 文嘉禄; 张晓玮
    • 摘要: 胡杨(Populus euphratica)是杨柳科(Salicaceae)杨属落叶乔木,多生长在荒漠地带,为第三纪的孑遗植物。胡杨具有极喜光、耐盐碱、耐大气干旱、抗风沙、喜温暖也耐寒等特性,是干旱荒漠区自然林主要建群树种,能在地下水位较高的盐碱地和沙丘上存活,生长缓慢,能够抵御风沙、遏制沙化,在维护区域生态平衡和保护生物多样性方面,发挥着重要的作用。
    • 郭丽琴; 李友丽; 饶国栋; 张建国
    • 摘要: [目的]对采集自不同地区的22个杨属树种33个样本的遗传变异和亲缘关系进行研究.[方法]利用从72对引物中筛选出的40对相关序列扩增多态性(SRAP)引物组合对杨属不同树种进行遗传变异和亲缘关系分析.[结果]40对引物共扩增出487条清晰条带,其中,多态性条带为441条,多态性条带比率为90.55%.利用UPGMA得到的聚类分析结果表明了33个样本间的遗传关系,遗传相似系数为0.448 6~0.910 3;白杨派和胡杨派的派间平均遗传距离最大,为0.377 7.聚类分析结果表明,33个样本可分为4大类,这一聚类结果与传统的分类结果一致.通过系统发育树可以看出,白杨派单独形成一个分支,黑杨派、胡杨派和青杨派形成另一分支,可能暗示白杨派与其他各派的亲缘关系较远,青杨派与黑杨派和胡杨派的亲缘关系则比较近.[结论]不同的杨树品种在SRAP位点有较高的多态性,SRAP分子标记适用于分析杨属的遗传变异和亲缘关系,研究结果为杨属树种的分类鉴定、系统进化等提供了一定的理论依据.
    • 王强; 翟剑
    • 摘要: 阐述了小陇山林区毛白杨的生态习性与分布、育苗技术及应用等价值,并对前景展望进行了初步总结与建议.
    • 徐逸卿; 杜思源; 蒋安纳; 王启昂; 薛倚鹭
    • 摘要: 基因的共线性分析是比较基因组学中的重要研究内容.为了研究杨柳科植物的进化机制,对杨属中的毛果杨和柳属中的簸箕柳进行基因组内和基因组间的共线性分析.在对共线性分析及其作图软件的对比分析后,采用MCScanX对杨树、柳树进行基因组内、基因组间的共线性分析,再利用VGSC针对不同的基因组内和组间共线性关系进行可视化分析,从而推测杨树向柳树进化的过程,为杨柳科植物的进化与起源提供重要的依据.
    • 王芳; 熊喆; 延晓冬; 戴新刚; 王磊斌; 李亚飞
    • 摘要: The geographical distribution of the species diversity of the genus Populus in China was studied using the geographical information system and spatial statistics.The relationship between the Populus species diversity and longitudinal and latitudinal bands was analyzed using linear regression analysis.The results showed that:(1) In China,the genus Populus exhibited a zonal distribution that was in an east-west direction,which was wider than that in the north-south direction;(2) The greatest species diversity of the Populus distribution on the latitudinal and longitude gradient was located in the latitudinal and longitudinal bands of 30-40°N and 110-120°E,respectively,indicating that species richness was the greatest where the longitude and latitude were optimized and decreased as the longitude and latitude moved above or below the optimal range;(3) The distribution center of the Populus species biodiversity in China was located on both sides of the Heihe-Tengchong line in the northeast-southwest direction,and species diversity increased from the northeast to southwest of China along the line,but decreased from this line to the northwest and the southeast;(4) In terms of the level of taxonomy,the sections of Populus with the most extensive distribution range were sect.Populus and sect.Tacamahaca Spach in China and the four species with the most extensive distribution ranges were Populus davidiana Dode,Populus simonii Carr,Populus adenopoda Maxim,and Populus cathayana Rehd,which revealed that the differing levels of taxonomy within the same taxa resulted in a varied species diversity pattern on the same scale.%利用地理信息系统技术与空间统计相结合的方法,研究了杨属物种多样性在中国区域尺度上的空间分布格局,并且采用线性回归分析方法研究了杨属物种多样性与经纬度的关系.结果表明:(1)杨属物种在中国呈带状分布,东西分布幅度大于南北分布幅度;(2)纬度梯度上杨属物种集中分布区位于30-40°N,经度梯度上位于110-120°E,说明杨属物种多样性格局在经、纬度梯度上并非单调递增或递减,而是在某一最适区域具有最高的物种多样性;(3)中国杨属物种多样性的分布中心集中于东北—西南方向的黑河-腾冲线两侧,从黑腾线向西北和东南方向延伸过程中,物种多样性逐渐降低;沿黑腾线从东北向西南方向物种多样性呈增加趋势;(4)从分组、分种检索上看,白杨组和青杨组物种在中国分布范围最广,山杨、小叶杨、响叶杨和青杨4种物种分布范围最广,可见同一类群中不同分类等级的植物多样性地理分布格局存在差异.
    • 殷继艳; 张建国; 何彩云; 保尔江; 段爱国; 曾艳飞; 王健
    • 摘要: [目的]为探讨额河杨和银灰杨天然杂种的起源机制,[方法]应用18对SSR标记,从分子水平上对新疆额尔齐斯河流域杨属植物的种间关系进行分析研究.[结果]表明:(1)SSR系统发育树将整个流域天然杨属植物分为两大类群,即黑杨派和青杨派为一类,白杨派为一类;(2)白杨派派内系统聚类图显示,银白杨、欧洲山杨、银灰杨三个树种均有较大的遗传分化,特别是杂种银灰杨似乎更大;(3)黑杨派和青杨派的UPGMA分类图显示,青杨派和黑杨派分属于2个分支,其中,青杨派内部分化相对简单,分为2支,均为典型的苦杨;黑杨派内部的分化较为复杂,可分为4类,包括典型的欧洲黑杨、额河杨和回交子代.[结论]杂种额河杨具有更多的欧洲黑杨的遗传成分,因此,将额河杨放到黑杨派是正确的.
    • 赵良能; 龚固堂; 刘军
    • 摘要: 杨树(杨柳科杨亚科)包含两个属(即胡杨属杨属)、约50余个天然种(以及繁多的天然杂种和人工杂种),自然分布于热带非洲和大致从北纬19度至70度的北半球;胡杨属约8种,间断分布于赤道非洲、古地中海地区和北美洲东南部;杨属约40余种,大致产于北回归线与北极圈之间的亚洲、欧洲、非洲和北美洲.杨柳科植物的近期祖先可能在白垩纪初期起源于西网瓦纳古陆,并通过两个中间环节(即古杨群和古柳群)逐步分别发展为现存的杨树(即胡杨属杨属)和现存的柳树(即原柳属、钻天柳属与柳属).古杨群(杨树的直接祖先)可能在白垩纪中期起源于西冈瓦纳古陆;后来它扩散至有关各地(特别是北方的劳亚古陆),并在迁移的过程中进一步分化发展.胡杨属可能在白垩纪中、晚期发生于非洲陆块,并逐步扩散至劳亚古陆;后来,统一的胡杨属区系因劳亚古陆的断开和撒哈拉大沙漠的形成而被分割为远离的、独立发展的几个部分.杨属可能在第三纪中、晚期先后发生和分化于古地中海东部地区;后来扩散至欧亚大陆并陆续通过白令地区迁移至北美大陆.文中还提供了有关植物的属、种一览和杨柳科植物亚科与属的检索表.
    • 曲丹; 姜卫兵; 魏家星; 韩键; 翁忙玲
    • 摘要: With wide spreading and long planting history ,Populus was recognized as a good specie for green and timber production ,and had economic ,ecological and ornamental value .At the same time ,it was also a interna-tionally recognized ideal species for afforestation with the characteristics of fast-growing ,highly adaptable , widely distributed ,wide varieties and easy to reproduce .The resources and ecological characteristics of the Populus were stated ,the cultural connotation was explored ,and its application in landscape architecture were also discussed ,and some recommendations were made for comprehensive development ,especially the application strategies in landscape architecture .%杨属树种在我国分布广泛,历史悠久,是“四旁”绿化和木材生产的主要树种之一,具有很高的经济、生态和观赏价值。因其速生和适应力强、分布广、种类多以及容易无性繁殖等特点成为国际公认的植树造林和美化环境的优良树种。通过对杨属植物的资源概况和生物学特性进行系统阐述,挖掘了其文化内涵,总结了其在园林绿化中的应用方式,并对杨属植物的综合开发,特别是在园林绿化方面的应用策略提出了意见和建议。
    • HongZhong DANG; TianShan ZHA; JinSong ZHANG; Wei LI; ShiZeng LIU
    • 摘要: Estimation of the transpiration rate for a tree is generally based on sap flow measurements within the hydro-active stem xylem. In this study, radial variation of sap flow velocity(Js) was investigated at five depths of the xylem(1, 2, 3, 5 and 8 cm under the cambium) in three mature Xinjiang poplar(Populus alba L. var. pyramidalis) trees grown at the Gansu Minqin National Studies Station for Desert Steppe Ecosystem from May to October 2011. Thermal dissipation probes of various lengths manufactured according to the Granier's design were installed into each tree for simultaneous observation of the radial patterns of Js through the xylem. The radial patterns were found to fit the four-parameter GaussAmp equation. The peak Js was about 27.02±0.95 kg/(dm2?d) at approximately 3 to 5 cm deep from the cambium of the three trees,and the lowest Js appeared at 1 cm deep in most of the time. Approximately 50% of the total sap flow in Xinjiang poplar occurred within one-third of the xylem from its outer radius, whereas 90% of the total sap flow occurred within two-fifth of the xylem. In addition, the innermost point of the xylem(at 8-cm depth), which appeared as the penultimate sap flow in most cases during the study period, was hydro-active with Js,8 of 7.55±3.83 kg/(dm2?d). The radial pattern of Js was found to be steeper in midday than in other time of the day, and steeper diurnal fluctuations were recorded in June, July and August(the mid-growing season). Maximum differences between the lowest Js(Js,1 or Js,8) and the highest Js(Js,3 or Js,5) from May through October were 12.41, 17.35, 16.30, 18.52, 12.60 and 16.04 g/(cm2?h), respectively. The time-dependent changes of Js along the radial profile(except at 1-cm depth) were strongly related to the reference evapotranspiration(ET0). Due to significant radial variability of Js, the mean daily sap flow at the whole-tree level could be over-estimated by up to 29.69% when only a single probe at depth of 2 cm was used. However, the accuracy of the estimation of sap flow in Xinjiang poplar could be significantly improved using a correction coefficient of 0.885.
  • 查看更多

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号