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1.
东昌府区草本野生植物资源丰富.对所调查的具有重要开发利用价值的110种草本野生植物进行了植物分类学统计和开发利用评价,同时阐述了东昌府区草本野生植物资源的开发利用前景.  相似文献   

2.
运用民族植物学方法,调查研究了额济纳蒙古族食用的野生植物.结果表明,与当地牧民饮食直接相关的野生植物包括4种代粮植物、8种蔬菜、6种果品和2种食疗保健植物.额济纳蒙古族食用野生植物的传统知识和经验,在食物新资源的开发利用方面具有重要的参考价值,同时,作为当地人与生态环境相互作用的表现形式之一,还具有民族生态学意义.  相似文献   

3.
对文山州分布的云南重点保护野生植物资源进行调查,并归类统计其资源植物类型,结果表明:文山州分布有云南省重点保护植物42科56属58种2亚种4变种;有13类资源植物,其中以园林绿化、观赏资源植物种类最丰富,其次是材用资源植物,再次为药用资源植物,其它依次为芳香资源植物、具有较高学术科研价值的资源植物、色素资源植物、油脂资源植物、食用资源植物、水土保持资源植物、杀虫资源植物、纤维资源植物、饲料资源植物、橡胶资源植物.  相似文献   

4.
新疆鄯善野生植物资源调查   总被引:1,自引:0,他引:1  
通过实地考察和标本鉴定,对鄯善境内的野生植物进行了形态分类学研究。研究结果表明,鄯善县有野生种子植物48科177属,计296种2亚种1变种;其中,主要的野生植物资源有:食用植物28种,药用植物95种,饲用植物208种,蜜源植物22种,观赏绿化植物68种,工业用植物34种,纤维植物7种,有毒植物7种。  相似文献   

5.
平阳岭根峡谷的植物资源丰富,有种子植物428种,隶属于105科299属.对植物的区系性质进行了研究,同时对野生植物资源的开发利用与保护进行了探讨.  相似文献   

6.
黑茶山自然保护区位于山西省吕梁山脉西坡,有着丰富的野生植物资源,据调查统计该地有野生维管植物90科386属791种,按照经济用途将它们分为19类,其中:淀粉植物21种;食用油脂植物21种;保健品及饮料植物46种;饲用植物135种;野菜及蔬菜植物64种;蜜源类植物28种;药用植物433种;有毒植物41种;木材类植物54种;纤维植物60种;鞣质植物48种;芳香油植物34种;工业油脂植物55种;染料植物22种;水土保持植物50种;绿化植物59种;花卉植物92种;抗污染植物14种;珍稀濒危植物9种.此外,对该自然保护区野生植物资源的保护和管理提出了建议.  相似文献   

7.
内蒙古野生植物资源分类及开发途径的研究   总被引:1,自引:0,他引:1  
根据内蒙古植物资源的构成和特色,把内蒙古野生植物资源分为食用植物资源、饲用植物资源、药用植物资源、工业用植物资源、环境植物资源、种质植物资源、特有和珍稀植物资源以及文化利用植物资源,共8大类型.发挥内蒙古野生植物资源的特色和各民族传统利用的特色,是合理开发内蒙古野生植物资源的重要途径.  相似文献   

8.
对吉林西部盐碱化草甸野生植物进行了种类调查.该草甸有野生植物38科112属161种,其中常见的药用植物18种.对18种药用植物进行了物候期的观察.该研究为吉林西部野生药用植物人工栽培提供了理论依据;为用本地植物治理盐碱地提供了第一手资料;对盐碱生植物的开发利用提出了建议.  相似文献   

9.
焦作地区野生植物资源有高等维管植物1440种、变种115种,隶属于159科685属。其中可作为资源加以开发的种类丰富,依其用途可分为造林用材、园林绿化、药用、野菜、果源等植物资源类型。然而目前这些野生植物资源破坏比较严重,急需加以保护。  相似文献   

10.
太行山南段野生植物资源研究   总被引:2,自引:0,他引:2  
太行山南段拥有丰富的野生植物资源,据调查统计有种子植物125科,456属,974种(含变种),按其经济用途将它们分为12类,其中,1.纤维植物98种;2.油脂植物147种;3.芳香植物66种;4.鞣料植物65种;5.淀粉植物98种;6.果树植物136种;7.密源植物88种;8.饲料植物166种;9.药用植物426种;10.农药植物72种;11.野菜植物68种;12.观赏植物239种.此外,对该区野生植物的开发利用和保护提出了建议.  相似文献   

11.
Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.  相似文献   

12.
何延凌 《科技信息》2008,(4):258-258
Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women's language from these perspectives: pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women's language, more attention should be paid to language use in social context. What's more, the linguistic phenomena in a speaking community can be understood more thoroughly.  相似文献   

13.
理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。  相似文献   

14.
As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.  相似文献   

15.
正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-  相似文献   

16.
We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-  相似文献   

17.
正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that  相似文献   

18.
For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the  相似文献   

19.
Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of  相似文献   

20.
<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with  相似文献   

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