共查询到20条相似文献,搜索用时 562 毫秒
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小陇山林区植物资源丰富,通过多年对该区野生草本花卉资源种类、分布的调查研究,发现本区综合利用价值较高的野生草本花卉植物有33科60属69种。对本区主要野生草本花卉资源的利用价值进行了简要介绍,并对其综合利用提出了建议。 相似文献
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本文介绍了中条山区野生花卉资源分布与种类、中条山区野生花卉资源概况、中条山区野生花卉开发利用价值以及野生花卉资源开发利用前景,对开发利用野生花卉资源具有促进作用。 相似文献
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李雪林 《内蒙古林业调查设计》2009,32(6):50-50,53
通过对内蒙古大兴安岭林区野生宿根花卉的储量、林区的经济形势、相邻的黑龙江省对野生宿根花卉开发利用以及目前北京等各大城市园林绿化对野生宿根花卉的需求等情况进行分析表明,目前正是内蒙古大兴安岭林区开发利用野生宿根花卉资源的最佳时机。 相似文献
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归纳概括了小兴安岭区域应用价值较高的野生花卉资源398种,并对野生花卉在经济价值、生态功能、社会效益及园林绿化等方面的应用价值进行了全面阐述,对野生花卉资源的开发利用提出合理建议,为小兴安岭地区建设生态园林城市,绿色发展提供理论基础。 相似文献
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调查许昌市主要彩叶树种种类,分析彩叶树种在许昌市的园林应用现状,并对彩叶植物在许昌地区的发展提出建议。
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H. Berge 《Journal of pest science》1972,45(6):84-86
Summary The differentiation between acute, direct chronic and indirect chronic immissions caused by atmospheric pollution brought about by emissions having the nature of gas, smoke and dust is described. Several positive examples are quoted to the question whether indirect chronic immissions are possible without damage to growth up, yield and/or production.A differentiation has value for autotrophic and heterotrophic life forms:1. Insignificant immissions in the animate world prevail when autotrophic/heterotrophic life forms are not adversely affected, as compared with their condition in their usual situation and surroundings, i. e. when: their anatomical/morphological development, their function, their efficiency, their powers of propagation, their immunity to disease, their longevity and their physiological function and/or psychical well-being are not impaired.2. Considerable immissions in the animate world prevail when the development, function, efficiency, powers of propagation, immunity to disease and/or general well-being of autotrophic/ heterotrophic life forms, as compared with their condition in their usual situation and surroundings, are affected by reversible physiological/ psychical disturbances (direct and indirect chronic immissions) but when their longevity remains unaffected and when anatomical/morphological anomalies, changes and/or damage (acute immissions) do not occur.3. Severe immissions in the animate world prevail when the development, function, efficiency, power of propagation, immunity to disease, longevity and/or general well-being of autotrophic/heterotrophic life forms, as compared with their condition in their usual situation and surroundings, is affected or interrupted by repeated or irreversible physiological/psychical disturbances (direct and indirect chronic immissions), whereby, under certain circumstances, limited but typical anatomical/ morphological anomalies, changes and/or damage (acute immissions) occur to separate organic parts.4. Excessive immissions in the animate world prevail when the development, function, efficiency, power of propagation, immunity to disease, longevity and/or general well-being of autotrophic/ heterotrophic life forms, as compared with their condition in their usual situation and surroundings, are prevented or ended by repeated or irreversible physiological changes or by psychical disturbances (direct and indirect chronic immisssions), whereby, under certain circumstances, some organs or complete organisms suffer extended and typical anatomical/morphological anomalies, changes and/or damage (acute immissions). 相似文献
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南充市城区彩叶植物资源及园林应用研究 总被引:4,自引:0,他引:4
本文通过对南充市城区的彩叶植物种类及应用调查,总结了当地主要彩叶植物种类,分析了其在南充地区的因林应用现状,并对彩叶植物在南充市的应用提出了建议。 相似文献
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蒿属植物在中国北方沙漠治理中的作用 总被引:1,自引:0,他引:1
以大量研究文献为基础,综述了中国蒿属植物在荒漠和草原植被中的地位、蒿属植物对逆境的适应、蒿属植物的地理替代性以及蒿属植物在治沙实践中的作用。 相似文献
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金堂县淮口镇于2009年开始先后引进7个油橄榄品种进行栽培试验,试验通过设置标准样地进行物候期观测,表型性状比较,含油率及油脂成分分析;结果表明:各油橄榄品种花期主要集中在4月下旬,果实成熟集中为10月上旬,阿贝基纳成熟期稍稍晚—点为10月中旬;各品种表型性状差异大部分两两显著;鲜重含油率高低顺序依次为鄂植8号>佛奥>阿贝基纳>皮削利>皮瓜儿>小苹果>莱星;单果重依次为皮削利>莱星>鄂植8号>小苹果>佛奥>皮瓜儿>阿贝基纳;果肉占单果比重依次为小苹果、皮削利>莱星>鄂植8号>皮瓜儿>阿贝基纳>佛奥;在引种的7个品种中,阿贝基纳表现出较好的适应性,佛奥和鄂植号次之. 相似文献
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从视障使用者的角度探究其理解和诠释景观的方式对视觉无障碍环境设计具有重要的指导意义。文章组织30名16~28岁的视障人士,以广州花城广场为调研地点,通过行为观察与访谈研究视障人士的"行为与感知"过程,以及问卷调查进行"感知与评价"的分析,探讨视障人士的景观感知方式,分析其景观需求;最后从意愿需求、总体环境需求及环境细部需求方面得出相关设计要点。 相似文献