共查询到20条相似文献，搜索用时 171 毫秒
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加拿大皇家植物园位于安大略省伯灵顿市和哈密尔顿市交界处,紧邻湖湾,占地1093 hm2,是全世界最大的几个植物园之一.该植物园建于1930年,拥有4个自然保护区和5个公园.5个公园内收集和培植了世界各地的多种植物,包括热带植物,药草植物,芳香植物,一年生和多年生植物,品种数以万计.该园不仅成了加拿大的旅游胜地,也成为集科学研究、科学普及教育、生物多样性保护于一体的生物基地. 相似文献
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重庆南山植物园作为以山地为特色的植物专类园,在植物景观营造上有别于其它公园。文章从南山植物园的植被起源与构成、用地特点与各专类园的关系到植物园造景进行深入调查分析,初步总结出其植物造景规律,并重点阐述了该园的适地造景、建造植物群落、规则中求自然、突出绿地主题植物景观、表现自然野趣、合理修饰地形、展示季相变化、装点园林等植物造景特点。 相似文献
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The IUCN/SSC Status Survey and Conservation Action Plan: Dragonflies calls for an increase in educating the public and increasing awareness of dragonflies (Odonata). Dragonflies are conspicuous and attractive, and can ‘stand in’ for other invertebrates in raising awareness of the necessity to conserve invertebrates. While reserves have been set aside for dragonfly awareness and conservation in the northern hemisphere, no such dragonfly reserves appear to exist in the southern hemisphere, despite its rich dragonfly fauna. This paper describes the development of a dragonfly-awareness trail in an established and well-visited botanical garden (The National Botanical Gardens, Pietermaritzburg, South Africa). Correlations between species and environmental variables were significantly high for six measured environmental variables: pH, percentage shade, vegetation (structural and compositional), ambient and water temperature, and water depth. Multivariate analyses of data, classified 20 a priori selected sampling units into four ecologically meaningful biotope types, each with a characteristic dragonfly assemblage. The four biotopes provided potential viewing points. To these were added a further three duplicate biotopes so as to link the trail into a circuit. Questionnaires assessed public awareness of dragonflies, and helped design a preliminary leaflet. A final trail design was drawn up along with an expanded booklet. The trail has now been implemented. Recommendations are made on the minimal scientific underpinning required for future trail design. 相似文献
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陶思明 《中国生态农业学报》1994,2(2):1-5
本文提出庭院经济在促进农村发展中具有6个方面的优势，联系实际分析了不同时期、不同地域庭院经济的特点，并从10个方面论述了促进庭院经济更好发展的策略性问题。 相似文献
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The beautiful scenery and rich diversity of plant species in their living collections have been helping botanical gardens (BGs) attract visitors and thus serve as a base for public education on biodiversity. However, outdoor plant collections and landscape provide limited information for interpreting the field of biodiversity science as a whole. As a complement, a new tendency is to set up visitor education centers (VECs) inside BGs. In order to understand the extent that VECs can enhance the educational function of BGs, we conducted a study in five BGs containing VECs throughout mainland China. Our study indicated that the educational function of VECs worked fairly well despite the great variation among the BGs’ VECs. In all five BGs investigated, visitors to the VECs believed that they gained significantly more knowledge compared to those that did not visit VECs. Meanwhile, the VECs’ educational roles were significantly associated with demographic characteristics. In most BGs, visitors that were older, with a lower educational level, from a non-local province as well as those who had visited the garden more than once tended to have a better experience in learning compared to those who did not visit the VECs. Furthermore, in two of the five BGs, visitors to the VECs had significantly higher satisfaction than those who did not visit the VECs. The study results highlight the importance of improving educational facilities such as setting up VECs to allow BGs to play a better role in biodiversity conservation. 相似文献
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The sale of botanical dietary supplements in the United States is on the rise. However, limited studies have been conducted on the safety of these supplements. There are reports on the presence of undesired metals in some of the botanical dietary supplements. In this study, echinacea, garlic, ginkgo, ginseng, grape seed extract, kava kava, saw palmetto, and St. John's wort supplements manufactured by Nature's Way, Meijer, GNC, Nutrilite, Solaray, Sundown and Natrol, have been analyzed for lead, mercury, cadmium, arsenic, uranium, chromium, vanadium, copper, zinc, molybdenum, palladium, tin, antimony, thallium, and tungsten using inductively coupled plasma mass spectrometry. All samples were devoid of mercury contamination. Results indicated that the botanical supplements analyzed did not contain unacceptable concentrations of these metals. These supplements were also evaluated for microbial contamination, and most samples analyzed showed the presence of bacteria or fungi or both. Microbes were not counted nor were microbial counts determined in these samples. 相似文献
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Park YK Fukuda I Ashida H Nishiumi S Yoshida K Daugsch A Sato HH Pastore GM 《Journal of agricultural and food chemistry》2005,53(26):10306-10309
Suppressive effects of ethanolic extracts prepared from propolis group 12 and its main botanical origin (leaf bud of Baccharis dracunculifolia) on transformation of the aryl hydrocarbon receptor (AhR), the initial action of dioxin toxicity, were investigated. It was found that suppressive effects of propolis on AhR transformation were relatively higher than those of resins of its botanical origin in cell-free system and in Hepa-1c1c7 cells. When the composition of chemical ingredients was measured, propolis contained slightly higher amounts of flavonoid aglycones as compared with its botanical origin with the same characteristics. Moreover, antiradical activity, one of the typical biological activities of flavonoids, in propolis was also slightly higher than that in its botanical origin. These results indicate that not only propolis but also its botanical origin contains high amounts of flavonoid aglycones and that both of them are useful dietary sources for flavonoids with a potency to prevent dioxin toxicity. 相似文献
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该文在总结近年来试验研究和调查资料的基础上，提出了宁南山区高效果园建设的技术措施：即选用名优品种，采用无病毒苗木建园；壕沟栽植；合理密植；覆盖地膜；嫁接改良；节水灌溉和分区发展。应用上述科学技术，高效果园建设前景乐观。认为，宁南山区各地、县领导将发展果树生产，开发果品经济作为发展贫困山区经济的战略设想，不仅是可行的，也是可能的。最后提出了在宁南山区建立梨、苹果、仁用杏三大果品基地的建议。 相似文献
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The free amino acid content of 61 honey samples from Estonia has been determined by HPLC-UV with precolumn derivatization with diethyl ethoxymethylenemalonate. Analyzed samples were seven types of unifloral honeys and polyfloral honeys. The main amino acids found in Estonian honeys were proline and phenylalanine. The resulting data have been analyzed by t test and principal component analysis (PCA). t Test revealed that some amino acids (alpha-alanine, beta-alanine, asparagine, gamma-aminobutyric acid, glutamine, glycine, histidine, ornithine, phenylalanine, proline, serine, and tryptophan) are more potent for assigning honey botanical origin than others. PCA enabled differentiation of some honey types by their botanical origin. In the space of the two first principal components, heather honeys form a cluster that is clearly separable from, for example, polyfloral honeys. It is concluded that analysis of the free amino acid profile may serve as a useful tool to assess the botanical origin of Estonian honeys. 相似文献
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在现代化的过程中,精神压抑、亚健康成为大多数城市居民的困扰,本文介绍了园艺疗法的概念及其自身特点,分析了园艺疗法在康复疗养空间应用的原理和必要性,并归纳出植物保健园、色彩植物园、劳技活动园三种应用形式。园艺疗法通过患者的亲身体验与参与来达到恢复健康的目的。 相似文献