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81.
重庆珍稀濒危药用植物资源的调查研究 总被引:3,自引:0,他引:3
经调查鉴定,重庆地产属国家重点保护的珍稀濒危药用植物有86种,其中国家Ⅰ级保护13种,国家Ⅱ级保护38种,国家Ⅲ级保护21种.重点论述了它们的种类组成、起源和特有性,分布特点与规律,资源保护现状及应采取的保护对策;指出重庆市现有的86种珍稀濒危药用植物,除约有48%的种类在自然保护区受到保护外,还有52%的种类尚未得到有效的保护;提出应制定其资源保护和管理的有关细则,建立重庆市药用植物园,对三峡库区特有珍稀种类进行迁地保护等4项保护措施,建议将重庆地产的8种有重大药用价值的珍稀植物纳入国家重点保护计划. 相似文献
82.
Monika Gąsecka Marek Siwulski Kinga Drzewiecka Zuzanna Magdziak Mirosław Mleczek Piotr Goliński 《Chemistry and Ecology》2019,35(2):191-203
The aim of the study was to determine the response of Salix purpurea?×?viminalis L. growing on Pleurotus ostreatus spent mushroom substrate (SMS) with different copper (Cu) addition. The content of Cu in roots, leaves and shoots was reduced by SMS addition. A decrease of biomass was observed with simultaneous Cu concentration increase. SMS induced leaf and root elongation of Cu-treated plants. Variation in the profile of low molecular weight organic acids with the domination of oxalic and acetic acids was observed. The total phenolic content significantly increased for plants cultivated with SMS, while the biosynthesis of salicylic acid was considerably weakened. The content of sugars was generally reduced by SMS. Alteration in the level of the stress-related molecules suggests mitigation of the harmful effect of Cu on Salix hybrid metabolism by SMS addition. This pointed to the possibility of using SMS in contaminated soil to reduce the toxic effect of metals on plants used in phytoextraction. 相似文献
83.
The level of accumulation of selected essential and non-essential metals, namely; Ca, Cu, Fe, Zn, Mn, Cd, Pb, and Cr have been investigated in the seeds, fruits, and flowers of some medicinal plants utilized for tapeworm treatment in Ethiopia and their respective soil samples. These include seed of Cucurbita maxima (Duba), fruit of Embelia abyssinica (Ankoko), flowers of Hagenia abyssinica (Kosso), and fruits of Rosa abyssinica (Kega) and their respective soil samples. A wet digestion procedure with a mixture of conc. HNO3 and HClO4 for the plant samples and a mixture of conc. HNO3, HCl, and H2O2 for soil samples were used to solubilize the metals. Ca (1280–12,670?mg?kg?1) was the predominant metal followed by Fe (104–420?mg?kg?1), and Zn (18–185?mg?kg?1) in all the plant materials except for Hagenia abyssinica flower from Hirna in which Mn (16–42?mg?kg?1) followed by Fe. Among the non-essential toxic metals, Pb was not detected in Cucurbita maxima of Boji, Gedo and Hirna origins and in Rosa abyssinica of Hirna site. Similarly, Cr was not detected in Rosa abyssinica fruits of Boji and Gedo sites. The sampled soils were found to be between strongly acidic to weakly basic (pH: 4.7–7.1). In the soil samples, Ca (8528–18,900?mg?kg?1) was the most abundant metal followed by Fe (417–912?mg?kg?1), Zn (155–588?mg?kg?1), Mn (54–220?mg?kg?1), Cr (21–105. mg?kg?1), Cu (11–58?mg?kg?1), Pb (13–32?mg?kg?1) and Cd (2.8–4.8?mg?kg?1). The levels of most of the metals determined in the medicinal plants and the respective soil samples are in good agreement with those reported in the literature and the standards set for the soil by various legislative authorities. 相似文献
84.
Protection versus culture-driven exploitation of wild plant resources: the case on Changbai Mountain
Under Chinese culture it is believed that herbal medicine is always safe and wild food is always healthy. Generally, the rarer a plant, the higher its value. The booming economy in China has promoted tourism development in wilderness areas and wild medicinal and food plants are part of the attraction to tourists. Conflicts between wild plant exploitation and protection have emerged in many parts of China, such as Changbai Mountain. Changbai Mountain supports numerous medicinal and food plants but many have become rare and endangered. This paper numerically evaluates 30 plant species that have relatively high conservation value for each type (medicinal, ornamental and food), and briefly describes the uses of four to five top ranked species per type that need more protection on Changbai Mountain. This paper also addresses some tree species with important timber values on Changbai Mountain. Over 90% of China's medicinal, ornamental and food plant species, as well as valuable timber trees are found in the conifer–broadleaf mixed forest zone across the boundary of Changbai Mountain Nature Reserve. It is a major challenge to protect the native biodiversity of mixed forest on Changbai Mountain and more efforts need to be made to protect rare and endangered plant species with high economic value. 相似文献
85.
杜青 《环境监测管理与技术》2004,16(3):25-26
采用原子吸收光谱法测定了多维元素药片中矿物质含量。样品用硝酸消解,用火焰原子吸收法测定钙、镁、钾、铜、铁、锰,用石墨炉原子吸收法测铬和镍。方法灵敏可靠,测量相对标准偏差<2.4%,回收率在90%~100%之间,能满足药品检测要求。 相似文献
86.
R. Naraian R. K. Sahu S. Kumar S. K. Garg C. S. Singh R. S. Kanaujia 《The Environmentalist》2009,29(1):1-7
The cultivation of white rot edible fungus Pleurotus florida was performed in polybags. The corn cob was employed as basal substrate while eight different additives such as urea, ammonium
sulphate, gram flour, soybean meal, ground nut cake and molasses were used with corn cob. Three different levels of variable
combinations with corn cob were evaluated in response to different parameters of mushroom viz., mycelial growth, spawn running,
primordial initiation, fruit body yield and its biological efficiency. Each additive at different combinations showed variable
impact on the different stages of mushroom life cycle. The primordial initiation was observed for the first time during 20.2–35.1 days.
The biological efficiencies in every supplemented set were increased over un-supplemented control set. Increasing the level
of additives, the biological efficiency was negatively affected at higher levels. The cotton seed cake was found the best
supplement producing 93.75% biological efficiency while soybean meal was the second best additive producing 93.00% yield.
The highest growth rate, rapid mycelia run, early primordial initiation, highest yield and biological efficiency were recorded
in the combination of corn cob and cotton seed cake at 2% (98 + 2) level. 相似文献
87.
Roshila Moodley Neil A. Koorbanally MD. Shahidul Islam 《Journal of environmental science and health. Part. B》2013,48(12):938-944
Antioxidant activity in edible fruits is an important characteristic in the choice of fruits for human consumption, and has profound influence on nutrition and health. Two pharmacologically active triterpenoids, β-sitosterol and lupeol, and the powerful flavan-3-ol antioxidant, (+)-catechin, were isolated from the edible fruits of Harpephyllum caffrum while a mixture of cardanols, an alkyl p-coumaric acid ester, and (+)-catechin were isolated from the stem bark. This is the first report of these compounds being isolated from this plant. The antioxidant capacity of (+)-catechin was higher than the other isolated compounds as well as the known antioxidant, ascorbic acid. 相似文献
88.
89.
八角莲属小檗科八角莲属植物,为我国特有药用植物。近年来,随着经济社会的发展,已有不少研究集中在八角莲的分布与生物生态特征、化学成分、栽培研究、药用价值等方面。八角莲属植物的药效显著、用途很广,对其研究及野生资源采摘越来越多,导致该属植物分布及其数量急剧减少,因此对八角莲属植物的开发利用与保护亟待加强。 相似文献
90.