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通过对义乌市生态廊道建设现状分析,针对生态廊道两侧山地森林以马尾松林为主,树种单一、结构简单,病虫害危害比较严重,季相景观效果差,珍贵树种储备不足等问题,提出了完善河流两侧彩色森林景观、提升交通干线两侧彩色森林效果、打造八条美丽乡村精品线、构建多个生态型节点等推进义乌生态廊道建设的主要抓手,为义乌市生态廊道建设提供依据。 相似文献
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德清美丽乡村示范村建设 总被引：1，自引：0，他引：1
美丽乡村示范村建设是在"美丽乡村"建设基础上,通过"千村整治,万村示范"工程,结合村庄特色产业、特有文化、自然环境,在乡村建设过程中,达到村庄产业发展为核心、区域文化得到深度挖掘与传承、村庄环境得到优化、乡村得到持续活化的示范作用。从景观规划设计角度出发,以德清三林精品示范村为例,从整体规划的布局、万鸟园的景观设计阐述三林精品示范村的示范做法,并结合设计、施工阐述如何在景观规划设计中结合现状,打造具有示范意义的、使得村庄长期活化的美丽乡村,从而丰富美丽乡村建设的内容。 相似文献
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指出了在实施乡村振兴战略背景下,打造整洁优美的人居环境、提升乡村居民可支配收入,可以有效满足乡村居民对美好生活的需求。以乡村景观作为乡村振兴的切入点,在概述乡村景观的内涵及发展成果的基础上,对千金镇乡村景观类别进行了划分并探讨了乡村景观发展中存在的问题。结果显示:千金镇乡村景观存在农业生产景观衰退、自然景观利用不足和聚落景观布局混乱等问题。围绕公共景观、植物景观、经济效益与生态效益结合提出了相应的策略,旨在为地方实践提供参考依据,同时为乡村振兴与美丽乡村建设提供实例参考。 相似文献
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随着美丽中国建设进程的推进,各地陆续开展"建设幸福村居、打造美丽乡村"的村庄景观改造,建成了一批以一批的美丽村庄。但由于美丽村庄建设是新工程,在景观绿化中存在着违背自然和破坏原有的生态的现象。本文以沙县示范绿色村庄绿化为例,列举不同类型村庄绿化的措施,为今后美丽村庄绿化提供借鉴。 相似文献
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东北主要绿化树种对大气重金属污染物吸收能力的研究 总被引：3，自引：0，他引：3
本文于2003年9月到10月在哈尔滨市主要街道采集和分析主要绿化树种的树叶，研究测定了东北主要的24种乔木树种和6种灌木树种对大气重金属污染物铅、镉、铬、汞的吸收能力。结果表明：绿化树种对铅、镉、铬、汞具有一定的吸收能力，并依污染物和树种的不同而有明显差异；根据不同树种对不同大气重金属污染物吸收量的差异将其各分为三级，其中吸铅量高的树种有白桦、垂枝榆和京桃等；吸镉量高的树种有小黑杨、钻天杨、银中杨和旱柳等；吸铬量高的树种有黄菠萝、紫丁香、旱柳、黑皮油松、红皮云杉、京桃、榆叶梅和糖槭等；吸汞量高的树种有榆叶梅、蒙古栎、旱柳、接骨木、野梨和华北绣线菊等。本研究为在不同大气重金属污染条件下选择不同绿化树种提供了科学依据。表4参11。 相似文献
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竹业引领人类生活更美好 总被引：4，自引：4，他引：0
文章介绍了竹材在建筑、家具、交通、日用品等领域的应用现状,分析了竹材在性能、成本、资源量及环保等方面具有的多种优势,以及木材、塑料、钢材、陶瓷应用局限性和劣势,提出了竹木并举、以竹代塑、竹钢协同、竹瓷互补潜在的创新应用方向。在当前化石能源日益枯竭、环境压力越来越大的情况下,发展竹产业、应用竹产品是一项改变人类生活、促进绿色发展的重要举措,是健康生活、生态人居、绿色发展的正确方向。 相似文献
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三倍体毛白杨新品种对比试验 总被引：1，自引：0，他引：1
经过９年对１９个三倍体毛白杨新品种的生长对比试验和各品种的干形、抗风折及抗病虫害能力的综合分析,结果表明,Ｌ１０、Ｌ４、Ｌ２、Ｌ３、Ｌ９和Ｌ１六个新品种综合性状最优,特别是Ｌ１０和Ｌ４的材积增益大于对照１．４倍～１．９倍,具有干形直、抗风折、病虫害少的优点,应作为重点发展的新品种。Ｌ１０、Ｌ３和Ｌ９为雄株,可用于城市绿化和通道工程绿化。目前三倍体毛白杨的病虫害有不断升级之势,天牛、白杨透翅蛾、根瘤病、潜叶蛾的危害较重,应引起人们足够的重视。 相似文献
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街道景观是城市景观的重要组成部分,是人们日常生活中进行各种活动的重要场所。街道景观的提升有助于改善城市环境、提高市民居住的舒适感、增强市民的凝聚力和认同感。文章阐述了城市街道空间的天空、地形地貌、绿化、水体、建筑、路面、小品、交通设施等景观要素,以及适宜的空间尺度、阴角空间,分析了对景、偏移、引导、对比、分段等设计手法在街道空间景观设计中的应用。 相似文献
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《Journal of Sustainable Forestry》2013,32(3):29-55
Abstract Composted organic matter, controlled release fertilizer, and dolomitic lime soil amendments were evaluated for their effectiveness in facilitating the reforestation of an acidic, semiarid Sierra Nevada surface mine with bareroot Jeffrey pine (Pinus jeffreyi Grev. & Balf.). Single application rates were used for the organic matter (2.0 L) and lime (28 g) amendments while low and high rates (8 g and 16 g, respectively) of the chemical fertilizer, High N 22-4-6 + Minors, were employed. All amendments were administered at outplanting using the minisite application method. The organic and lime amendments suppressed seedling survival, more so with the former than the latter, but this result did not extend to the High N fertilizer. Growth was also suppressed by the organic and lime amendments, although there was some evidence that these responses were waning late in the study, while High N was exceedingly stimulatory, especially with the high application rate. Annual assessment of seedling nutrition during this three-year study revealed numerous High N and organic matter treatment influences. Among them, increases in foliar N, P, and K and reductions in Fe, Mn, Zn, and Al were prominent within the High N treatments, but particularly so at the high application rate. For the organic matter treatment, the above increases and decreases in elemental concentrations were again noted, although the nutritional responses to this treatment were generally more subdued and somewhat ephemeral in comparison with those to High N. Calculation of base cation/metallic element molar ratios revealed that the organic matter treatment had the highest Ca/Al, Ca/Mn, Mg/Al, Mg/Mn, K/Al, K/Mn, and K/Cu during the initial season, but exerted little influence on these ratios thereafter. The High N treatments produced the highest Ca/Cu and Mg/Cu in the first season, the highest Ca/Al, Mg/Al, K/Al, and K/Mn in the second, and the highest Ca/Al, Mg/Al, Mg/Mn, K/Al, and K/Mn in the third season, with the high application rate especially prominent. Seedling nutrition was, at best, minimally affected by liming, with perhaps its most notable influence that of counteracting the positive responses indicated above with regard to the organic amendment effects on molar ratios. Overall, these results indicate that in the reforestation of difficult sites such as eastern Sierra Nevada surface mines, the favorable responses to controlled release fertilization can not be duplicated using composted organic amendments, and furthermore, dolomitic lime applications by the method used here are likely to prove exceedingly detrimental to seedling establishment. 相似文献
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Sadanobu Katoh Tohru Furukawa Akinori Mizuguchi Takeshi Furuno 《Journal of Wood Science》2006,52(5):466-469
Variations in the compositions of low boiling point (LBP) monoterpenes in needle samples from 99 sugi (Cryptomeria japonica) and 100 kuromatsu (Pinus thunbergii) trees were investigated using a headspace technique. Considerable variations in the proportions of monoterpenes were revealed
in both species. In sugi, the proportions of sabinene and α-pinene in the total LBP monoterpenes, ranging from 8.8% to 73.3% and from 14.5% to 73.3%, respectively, showed enormous variations
among nine monoterpenes. The proportions of 3-carene and limonene, ranging from 0.1% to 29.5% and from 0.2% to 20.4%, respectively,
also showed very specific variations. In kuromatsu, the proportions of β-pinene and α-pinene in the total LBP monoterpenes, ranging from 26.5% to 66.3% and from 18.7% to 46.9%, respectively, showed considerable
variations among ten monoterpenes. The proportions of myrcene and 1,8-cineole, ranging from 0.9% to 18.5% and from 0.8% to
12.3%, respectively, also showed specific variations.
Part of this article was presented at the 50th Annual Meeting of the Japan Wood Research Society, Kyoto, April, 2000, and
the 13th Annual Meeting of the Chugoku Shikoku Branch of the Japan Wood Research Society, Okayama, September 2001 相似文献
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福建南安五台山西南桦种源家系试验初报 总被引：1，自引：0，他引：1
对25个种源276个家系西南桦径、高、材积生长和耐寒性综合分析看,A、V、T、Y、K、Q、I等7个种源生长表现好,有一定的耐寒能力,是较好种源;其余种源表现一般或差,发展潜力小。每个种源根据生长表现都可选出1~2个优良家系,这些选出的优良家系不仅生长快、产量高,而且抗性强,全部没有受到寒害影响,都是较好家系,如T04、I04、A04、P25、F11、H12、V16、Y15、K17、U11等是优良家系,单株材积达0.00396~0.00864 m3。 相似文献
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2001年3月至2003年10月,在元江县林木种苗管理工作站进行了6种森林蔬菜的育苗及修剪试验,结果表明,采用生长调节剂处理插穗后,可提高臭菜、树头菜、越南甜菜和刺五加扦插生根率,在大棚中最佳扦插时间生根率分别达80％、60％、80％、60％,吲哚丁酸好于ABTI*生根粉,大棚中扦插优于露天；其中刺五加最佳扦插时间为10月,其他3种为3月.南山藤和长蕊甜菜的种子育苗,出苗率分别为100％和92％；南山藤和长蕊甜菜最佳育苗时间分别为3月和8月.臭菜、南山藤、刺五加、树头菜和越南甜菜的最佳修剪高度分别为50 cm、50 cm、40 cm、60 cm和50 cm,与未修剪相比,分别提高了191.43％、415.63％、214.29％、336.94％和531.39％,修剪能大幅度提高森林蔬菜产量. 相似文献