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竹子开花的原因及预防措施 总被引:7,自引:0,他引:7
1概述竹子是我国重要的森林资源之一,不论是品种数量、竹林面积和竹材产量均居世界首位。就竹子生产而言,出现竹子大面积成片开花则是一大威胁。以往这一问题不被人们高度重视,其因有三:①有些竹种开花周期长,短者几十年,长者上百年开花一次,这类竹子因开花罕见,平常不太引起人们的关注。只有当出现大面积同步成片开花枯死时,才感震惊;②有些竹种不定期零星开花或经常开花,但因开花后不会出现全林自然枯死,损失较轻,也不太被人们重视;③有些竹种由于本身经济价值较低,过去很少开发利用,例如箭竹,冷箭竹,巴山木竹等高山竹… 相似文献
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竹子开花预示着给印度阿萨姆邦北卡查山区带来大范围饥荒的威胁。竹子开花也引起卡查和莫日冈地区附近的2个造纸厂的关注,它们的原料均为来自北卡查山区的竹子。[第一段] 相似文献
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We recorded gregarious flowering of three bamboo species viz. Bambusa arundinacea, Bambusa tulda and Melocanna baccifera during rainy season from early March to late May, 2008 at lowland forest of Bajali area of Indo-Burma hotspot region. A regular
method of field sampling of various forest types was used to map the bamboo species in Assam, India. Moreover, people’s perception
on bamboo blooming was investigated at 17 sample plots covering 258 respondents inhabiting at the site at an average of 15
in each plots. A floral clump (inflorescence) emerged and developed into a giant panicle comprising of numerous florets. Two
types of seeds viz. bacca and caryopsis were recorded in different species. Viviparous germination was noticed in few bacca
seeds produced by M. baccifera and this has unusual occurrence in bamboo. Seed viability test shows that 75% caryopsis seeds were viable; these seeds had
the potential of germination and can be used for mass regeneration. Most local respondents believe that bamboo flowering can
result in population explosion of rodent, therefore, they think bamboo flowering is positively correlated with famine. This
traditional belief results in massive destruction of bamboo clumps, which significantly impacts on rural economy. 相似文献
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简要介绍和分析了竹林土壤生态系统质量的概念及其与持续林业的关系、竹林土壤质量的评价方法、质量变化和土壤退化的动因、动态监测方法等方面的最新国内外研究进展 ,对我国今后竹林生态系统土壤质量研究工作的方向和重点领域提出了建议 相似文献
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重视发挥竹林的生态功能效益 总被引:1,自引:0,他引:1
萧江华 《绿色中国(A版)》2001,(1):31-34
分别介绍了竹纯林林分和混交竹林林分的生态功能 ,竹林的更新生长规律和特性 ;认为竹业发展必须确立以保护生态环境为基础 ,经济效益与生态效益并重的方针 ,实施竹林分类经营制度 ,定向培育 ,充分发挥竹林的多功能效益。研究表明 ,竹纯林的固土能力为马尾松的 1 5倍 ,吸收降水能力为杉木的 1 3倍 ,涵养水量比杉木多 30 %~ 45 %。 相似文献
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福建永安发展竹林生态旅游的探讨 总被引:1,自引:0,他引:1
永安是“中国笋竹之乡”,竹林总面积在5.5万公顷左右,有乡土竹种15属75种,有着丰富竹子生态旅游资源。本文就竹子的观赏与美学价值、永安竹文化资源、永安竹子生态旅游市场潜力与发展前景进行分析,提出发展永安竹子生态旅游的对策与措施。 相似文献