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矮嵩草

矮嵩草的相关文献在1990年到2022年内共计67篇,主要集中在植物学、畜牧、动物医学、狩猎、蚕、蜂、农作物 等领域,其中期刊论文66篇、会议论文1篇、专利文献27260篇;相关期刊33种,包括生态学报、西北植物学报、植物生态学报等; 相关会议1种,包括2009中国草原发展论坛等;矮嵩草的相关文献由137位作者贡献,包括李希来、朱志红、杨元武等。

矮嵩草—发文量

期刊论文>

论文:66 占比:0.24%

会议论文>

论文:1 占比:0.00%

专利文献>

论文:27260 占比:99.75%

总计:27327篇

矮嵩草—发文趋势图

矮嵩草

-研究学者

  • 李希来
  • 朱志红
  • 杨元武
  • 周华坤
  • 易现峰
  • 王刚
  • 贲桂英
  • 韩发
  • 刘伟
  • 张静

矮嵩草

-相关会议

  • 期刊论文
  • 会议论文
  • 专利文献

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    • 毛玉晶; 谢占玲; 徐鸿雁; 孟清; 郭璟; 戴大日; 王晓芳; 孙占清; 周晓雨
    • 摘要: 为研究青海高原高寒草甸不同海拔梯度下黄绿卷毛菇适生草地植物群落多样性及其与海拔的关系,采用样方调查法对青海高原4个海拔梯度(8个样地)共24个样方的黄绿卷毛菇适生草地植物进行调查,运用统计学等方法分析高寒草甸黄绿卷毛菇适生草地植物多样性和群落结构。结果表明:青海高原高寒草甸黄绿卷毛菇适生草地植物有32种,隶属于13科27属,ZK-3690样地植物群落多样性、丰富度和均匀度最高,其Shannon-Wiener指数、物种丰富度和Pielou指数分别为1.95±0.58、11.33±1.15和0.34±0.09,QSH-4410样地植物种类多且分布均匀,其Simpson指数最高为0.78±0.05;相似性系数表明,在8个黄绿卷毛菇适生草地植物群落中,ZQ-4240与QSH-4410样地植物群落最相似,其相似性系数为0.364;主成分分析和热图发现,海拔对黄绿卷毛菇适生草地植物群落分布影响较为明显,低海拔样地(3200~3350 m)以茜草科、禾本科和龙胆科等为主,中海拔和中高海拔样地(3690~3900 m)以石竹科、伞形科、蓼科及报春花科分布较多,蔷薇科分布在高海拔样地(4240 m以上)。此外,UpSet韦恩图结果表明,在本文调查范围内,矮嵩草是黄绿卷毛菇适生草地中100%分布的植物。本研究为黄绿卷毛菇与其适生草地植物的相关性研究提供理论依据。
    • 冯月; 白炜; 张景然; 房佳辰; 曾红丽
    • 摘要: 为明确高寒沼泽草甸主要植物对气温升高的生理响应模式及差异,本研究以风火山地区高寒沼泽草甸矮嵩草(Kobresia humili)、藏嵩草(Kobresia tibetica)及青藏苔草(Carex moorcroftii)为研究对象,分析增温处理下(T_(1):增温1.5~2.5°C;T_(2):增温3~5°C)3种植物生理响应差异,并结合主成分分析与隶属函数,就生理层面对3种植物增温的适应性进行评价。结果表明:受温度影响,3种植物可溶性蛋白、类胡萝卜素、脯氨酸含量变化呈一致性;藏嵩草部分生理指标相较其他2种植物表现出一定程度的滞后性;增温条件下,3种植物增温适应性强弱发生改变,为青藏苔草>矮嵩草>藏嵩草。综上所述,增温对3种植物的光合色素、渗透调节物质、丙二醛含量和抗氧化酶活性等生理特性产生了一系列的影响,同时,从生理响应层面对3种植物增温适应性排序可得,青藏苔草在模拟气温升高的过程中表现出更强的适应能力。
    • 李积兰; 李希来; 马福俊
    • 摘要: 以黄河上游青海河南县南旗村黄河二级支流小流域高寒草甸中的优势种矮嵩草为研究对象,研究其生理特征对小流域生境(山顶、坡地、滩地、1级阶地、2级阶地地形因子下的相应生境)变化的响应,同时探讨其与土壤温湿度理化性质因子间的关系.结果表明:1)生境特征,流域不同生境土壤理化性质中的湿度、全氮、全磷、碱解氮、速效磷、有机质含量在1级阶地、2级阶地、滩地、山顶中较高,在坡地的含量较低,滩地中的pH最低,全钾、速效钾含量最高.由于流域生境的差异,总生物量在1级阶地、2级阶地、滩地中较高,山顶、坡地较低.矮嵩草植物除在1级阶地的河漫滩湿地无分布外,其他生境均有分布,且在滩地为优势种,其盖度、重要值、生物量及生物量比重均最高,坡地次之.2)生理特征,山顶、坡地、1级阶地矮嵩草体内丙二醛含量、可溶性蛋白质含量、可溶性糖含量、脯氨酸含量、类胡萝卜素含量、过氧化氢酶活性增加,叶绿素a、b含量减小,而在滩地中以上指标呈现相反趋势.3)生境和生理特性相关分析,矮嵩草生理特性变化与立地生境的土壤湿度、pH、全钾含量相关性较高.综合分析,矮嵩草植物生态幅较广,喜适于pH较低、水热养分条件适宜的滩地高寒草甸植被生境;在胁迫生境下,通过增加体内抗逆物质活性和竞争来适应立地生境.%Kobresia humilis is one of the dominant species in the alpine meadow.We analyzed the physiological and ecological characteristics of K.humilis growing in several different habitats in a small catch-pit with secondary tributaries draining into the Yellow River,near Nanqi village,Henan County,Qinghai Province.The habitats were hill top,hill slope,beach land,terrace 1,and terrace 2.We explored the interaction between K.humilis and soil factors in these habitats.Soil analyses showed that soil moisture,total nitrogen,total P2O5,available phosphorus,and organic matter were higher in the terrace 1,terrace 2,beach land,and hill top habitats,and lower on the hill slope.Beach land showed the lowest soil pH and total K2O,and highest available potassium content.Therefore,soil fertility was higher in the terrace 1,terrace 2,and beach land habitats.Because of the different catch-pits in the various habitats,total biomass was higher in the terrace 1,terrace 2,and beach land habitats,and lower in the hill top and hill slope habitats.K.humilis was distributed in every habitat except on the floodplain wetland in terrace 1,and it was the dominant species in the beach land habitat.Its coverage,importance value,biomass,and proportion of total biomass were higher in the beach land habitat than in the hill slope habitat.Catalase activity and the contents of malondialdehyde,soluble protein,soluble sugars,proline,and carotenoids were higher in K.humilis from the hill top,hill slope,and terrace 2 habitats than in K.humilis from other habitats,but the chlorophyll a and b contents were lower.These indexes showed the opposite trends in the beach land habitat.Correlation analyses between soil factors and the physiological characteristics of K.humilis showed that some physiological characteristics were strongly correlated with soil moisture,pH,and total K2O.According to these comprehensive analyses of K.humilis across a range of ecological habitats,we conclude that K.humilis is suited to growth on soil with low pH,and moderate moisture and nutrition status.It can adapt to its habitat by increasing its resistance and competitive abilities under the conditions of low soil moisture and low nutrient content.
    • 李积兰; 张海燕; 李希来
    • 摘要: 以青海省黄南藏族自治州河南蒙古族自治县黄河二级支流夏吾曲河流域高寒草甸矮嵩草为研究对象,采用石蜡切片法对叶片进行解剖观察,并测量不同生境矮嵩草的根长、株高、叶面积、叶片厚度、上下角质层厚度、上下表皮细胞厚度、上下表皮细胞面积、栅栏组织层数和厚度、木质部面积、韧皮部面积等指标,研究矮嵩草形态结构特征对流域不同生境的响应.结果表明:在土壤湿度和养分含量相对较低及强光生境的山顶、坡地及二级阶地,矮嵩草叶面积减小,株高变矮,叶片厚度和根长增加,上下表皮角质层厚度、上下表皮细胞厚度与面积、上下栅栏组织层数与厚度、木质部和韧皮部面积均增加;在生境条件较好的滩地生境,矮嵩草形态和解剖结构特征呈相反趋势.%The leaves of Kobresia humilis in alpine meadow in the Yellow River Source Zone,Henan County,Huangnan Prefecture,Qinghai Province,were dissected with paraffin section method,the root length,plant height,leaf area,leaf thickness,upper and lower cuticle thickness,upper and lower epider-mic thickness,upper and lower epidermic cell area,bulliformcell number,the layers and thickness of pali-sade tissue,xylem and phloem areas of Kobresia humilis in different habitats were observed and meas-ured,so as to reveal the morphological characteristics of Kobresia humilis in different habitats.The re-sults showed that the leaf area of Kobresia humilis and plant height decreased and the thickness of leaf and root length increased on top,hill slope and terrace conditions in low soil moisture and less nutrient content with more sunshine.At the same time,the upper and lower epidermis thickness and area,cuticle thick-ness,the upper and lower layers and thickness of palisade tissue,xylem and phloem areas all increased, and the morphological characteristics of Kobresia humilis showed an opposite trend in beach habitats.
    • 牛犇; 张立峰; 马荣荣; 刘晓琴; 张翔; 赵亮; 古松
    • 摘要: 为揭示高寒草甸土壤微生物量和土壤酶活性特征,以青藏高原金露梅(Potentilla frutisosa)丛间草地和矮嵩草(Kobresia humilis)草甸为研究对象,分析了其土壤理化性质、土壤微生物量、微生物贡献率、土壤酶活性特征.结果表明:矮嵩草草甸土壤全氮、全磷、微生物碳(氮、磷)、微生物氮(磷)贡献率、土壤脲酶、过氧化氢酶、多酚氧化酶活性均显著大于金露梅丛间草地;而土壤有效磷、磷酸酶活性均显著小于金露梅丛间草甸;2种类型草甸的土壤有机质、微生物碳贡献率没有显著差异;2种类型草甸的土壤微生物量对土壤营养库的贡献率均在较低水平.说明高寒草甸在植被生长旺季土壤微生物量呈现较高的水平;而微生物量对土壤营养库比值略偏低.矮嵩草草甸比金露梅丛间草地更有利于土壤养分的提高以及土壤微生物的生长和繁殖.
    • 李积兰; 李希来
    • 摘要: 青藏高原高寒草甸的建群种矮嵩草(Kobresia humilis)以自身重要的生态价值、营养价值、耐寒耐牧和高抗逆性,对该地区生态环境的稳定和畜牧业的发展具有重要意义.由于全球气候变暖,长期超强度的放牧压力和啮齿动物的破坏活动,使矮嵩草的生存和发展受到严重破坏,使高寒草甸生态系统受到了一系列既有的或潜在的影响.因此,学者们从各方面研究矮嵩草及其生态系统,以期实现矮嵩草草甸草地的可持续利用.总结了矮嵩草的资源特性、矮嵩草对自然干扰和人为干扰环境的适应,以及适应环境的形态结构和生理生态特征等方面的研究进展,旨在为今后深入开展矮嵩草相关研究,高寒草甸草地的可持续利用、保护和恢复提供科学参考.
    • 李惠霞; 彭焕; 彭德良; 朱锐东; 徐鹏刚; 李建荣
    • 摘要: 2013年8月下旬,对甘肃天祝高寒草甸草原孢囊线虫发生情况进行调查,从嵩草和矮嵩草根部和根际土样中分离得到孢囊线虫。通过对孢囊和孢囊阴门锥的形态观察,初步鉴定为禾谷孢囊线虫(Heterodera avenae )。其特征为孢囊浅褐色,阔柠檬形,阴门锥双膜孔,未见阴门下桥,泡状突明显。利用通用引物 AB28和 TW81对其群体rDNA-ITS 区进行 PCR 扩增和序列测定,得到 ITS 区序列长度为1045 bp。将所测得序列在 Genbank 和 Blast 上比对,结果显示,此禾谷孢囊线虫群体与 H .avenae 群体相似度达99%~100%。进一步证实寄生于甘肃天祝高寒草甸草原嵩草和矮嵩草的孢囊线虫均为 H .avenae ,这是首次报道莎草科嵩草和矮嵩草也是禾谷孢囊线虫的寄主。%A survey of grass cyst nematodes in Tianzhu alpine meadow steppe,Gansu Province was conducted in August,2013.Cyst nematodes were isolated from the roots and root rhizosphere of Kobresia sp.and Kobresia humilis .The nematodes were initially identified as Heterodera avenae based on cyst characteristics,particular-ly the cyst vulva cones.The cysts were light brown,large lenmon-shaped and contained vulva cones with bifenestrate and obvious bullae and without a vulva under-bridge.The 1045 bp sequence fragment of ITS region was amplified using PCR with general primers AB28 and TW81.The similarities between these groups and H . avena were 99%-100%.Molecular analysis confirmed that the cyst nematodes isolated from Kobresia sp.and Kobresia humilis growing in Tianzhu alpine meadow steppe were H .avenae .This is the first report identifying Kobresia sp.and Kobresia humilis as hosts of H .avenae .
    • 石红霄; 侯向阳; 师尚礼; 贺晶; 胡宁宁
    • 摘要: 矮嵩草和高原早熟禾是青藏高原的主要优势植物,研究其对放牧的表型反应对揭示高寒草甸生态系统的放牧响应机制具有代表意义。以青藏高原三江源区高寒草甸为例,通过设置自由放牧与围封禁牧试验,研究了高原早熟禾和矮嵩草茎叶功能性状对放牧的响应。结果表明:与围栏禁牧相比,放牧抑制了高原早熟禾和矮嵩草的生长,导致了2种植物株高、叶面积的显著下降(P 0.05),说明放牧退化草原植物性状具有保守性。%Kobresia kansuensis and Poa crymophila are the dominant plants on the Qinghai-Tibetan Plateau, their responses to grazing were studied.The results show that both plant height and leaf area under grazing were significantly lower than them under fencing condition (P 0.05).It suggested that plant functional traits degraded under grazing.Therefore,plant dwarf phenomenon was an important trigger mechanism of structural and functional changes in grassland ecological system.
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