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城市中的绿化是一个重要的环节,它是这个社会政治、经济、社会环境的重要体现,是城市的标志,为了创建一个美好的城市形象,必须重视城市的园林绿化,与此同时必须要遵循植物生长发育的客观规律,尽可能创造更适合植物生活习性的基本环境,在植物的配置过程中一定要注重其艺术效果,使园林绿化能为城市带来美好的景观,还要为生态环境的改善以及空气的净化做出贡献。本文就我国当前的园林绿化的现状、园林绿化的种植原则、园林绿化种植的配置原则等方面的问题进行探析,希望能对以后的园林绿化种植工作带来帮助,仅供参考。 相似文献
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一、修剪的原则1.树木修剪的树型和分枝点高度应基本一致,分枝点一般控制在2~2.8m。2.树干与树冠要比例适当,一般树冠高占全树的1/2~2/3。3.树木修剪的程度,应根据主、侧枝间的生长 相似文献
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经济林树种在园林绿化中的应用 总被引:3,自引:0,他引:3
许多经济林树种具有良好的观赏价值和适应性,是园林绿化的好树种。园林绿化效果的体现,很大程度上取决于植物材料的应用,各种植物材料通过科学搭配,遵循生态学基本原理,因地制宜,适地适树,充分利用土地、空间,这不仅能满足人们的审美要求,也能使绿地充分发挥其生态功能。章分析了经济林树种在园林中应用的意义,并简要介绍了部分适于绿化的经济林树种,如花楸树、柿树、紫红叶榛子、曲茎榛子、红苞日本栗、垂枝毛樱桃、枸杞、核桃楸、银杏、垂枝杏、斑叶杏、山楂、金手指葡萄、软枣称狠桃等。 相似文献
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种子是更新造林的物质基础。建立林木种子园需要较长的时间才能见效,所以搞好人工林改造为母树林的工作尤为重要。 相似文献
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Far-Ching Lin Chih-Hsin Chung Jia-Lin Zeng Te-Hsin Yang Song-Yung Wang Cheng-Jung Lin 《Journal of Wood Science》2012,58(2):104-112
The purpose of this study was to explore the ring characteristics of Japanese cedar (Cryptomeria japonica) tree growth with thinning and unthinning regimes. The trees grown with thinning regimes increased in average ring width
(RW), earlywood width, latewood width, ring density (RD), earlywood density, latewood density, maximum ring density, and latewood
percentage (LWP) for the entire period of 16 years after thinning, as compared to those grown with unthinning regimes. The
RW and RD components showed different reactions lasting several years after thinning. Overall, thinning caused immediate production
(first year) of higher RD, lasting for several years; however, wider RW was delayed up to several years after treatment. There
was a weak relationship between RW (growth rate) and wood density; and there were significant positive relationships between
the RD and LWP. The results suggest that the compression wood produced after thinning. 相似文献
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园林生态城市是按照生态文明观提出的,能使城市景观、城市生态和城市建设有机的结合,具有显著的功能特点的城市发展新模式。其规划和建设的理论依据主要是美学原理、景观学原理和生态学原理。园林生态城市建设要坚持“以人为本”的原则,大力发展生态经济,营造城市生态文化氛围,采取市场运作和法治建设。 相似文献
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Liu HuirongNortheast Forestry University 《林业研究》1993,4(2):11-17
The plantations of korean pine(Pinus koraensis)and scots pine(Pinus sylvesrisvar.mongolica)are mainly pure stands.Fires are gradually causing problems in theseplantations and being paid much more attention recently.Study on the influence of fire ontrees and the adaptation to fire,therefore,is of great important to probe the fire ecologicalproperties and the protection ways of these two species.The results are as follows:Bothof the species are easily damaged by fire,but korean pine is more susceptible.In the samefire,korean pine is damaged more seriously than scots pine although they have the samesize.Young individuals have low fire resistant capacity and can be damaged seriously,andolder ones have strong fire resistance and can be damaged lightly.Up-hill fire makes aserious damage to the trees distributed in up-slopes with the reason of higher fireintensity.Down-hill fire makes a serious damage to the trees distributed in down-slopcswith the reason of higher fire severity.The larger deocambium area in t 相似文献
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