共查询到19条相似文献,搜索用时 109 毫秒
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本文分析了藤山自然保护区藤本植物景观资源及其构景要素、形式美和意象美的表现特征,提出藤本景观的培育和藤本植物资源保护措施。 相似文献
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莱芜地区观赏藤本植物种类丰富,但目前尚未得到广泛应用。介绍了莱芜地区观赏藤本植物资源,提出了可在园林中应用的观赏藤本植物。根据不同景观环境和对象配置观赏藤本植物,重点介绍根据花架的园林功能、形式,材质进行配置。以及不同形式的景观环境与观赏藤本植物配置。 相似文献
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以昆明市的藤本植物群落景观为研究重点,利用昆明本土资源优势,从景区和周边的植物资源、自然资源和人文资源等方面分析了乡土藤本植物的观赏性,奇特性,科普性. 相似文献
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藤本植物的生态价值及开发利用对策 总被引:1,自引:0,他引:1
藤本植物是一个特殊的生物类群,在垂直绿化、园林造景、荒漠化与石漠化综合治理等生态文明建设中有着其他植物不可替代的作用,能创造景观、生态、经济三相宜的园林绿化效果.目前在藤本植物的研究与应用上,还存在着种质资源收集保存不足、开发研究深度不够、园林绿化应用不广、政策支持力度不大等问题,因此,需要加大藤本植物开发研究和政策支持的力度,使之更好地服务于生态文明建设. 相似文献
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以湖南省青羊湖国有林场的藤本植物为研究对象,通过野外实地调查和文献研究,对该林场藤本植物进行了物种组成、区系成分、攀援类型及观赏类型分析,并利用层次分析法对其开发价值进行评价。结果表明:该区域有藤本植物132种,隶属于38科83属,其中,木质藤本占比较大,有81种,占61.36%;在物种组成上以少种科、属为主;在区系分布上,以热带分布中的泛热带分布最多;在攀援类型上,从多到少依次是:缠绕类、蔓生类、卷须类、吸附类;在观赏类型上,大多具2种及以上的观赏特性;在开发利用上,有68种藤本植物的开发综合评价值在3.0000分以上。本文为青羊湖林场的野生藤本植物资源的保护及可持续利用提供依据,也为美丽乡村建设及周边城市垂直景观构建提供更多素材。 相似文献
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Geertje M.F. van der Heijden Ted R. Feldpausch Ana de la Fuente Herrero Naomi K. van der Velden Oliver L. Phillips 《Forest Ecology and Management》2010
Lianas hold an important, but understudied, role in forest dynamics, however they are difficult to measure and detailed liana measurements are time consuming. Many researchers have therefore used an ordinal scale index, the crown occupancy index (COI), to describe the liana load carried by trees. Here we assess the overall effectiveness, in terms of accuracy, precision, repeatability and efficiency, of the COI in tropical forests. We relate the COI to more detailed liana measurements at the individual tree-level and site-level, comparing sites with different levels of liana infestation. Our results show (1) that the COI accurately measures individual tree and plot level liana loads, indicated by the strong correlations between the COI and the number and basal area of lianas. However, (2) as expected, the COI is only weakly related to the basal area of lianas rooted close to the tree, which is a proxy for competition for below-ground resources. The COI is also (3) an efficient measure of liana loads, as the input time needed for a COI survey is considerably less than that of a detailed liana survey. We also (4) found a high degree of repeatability in COI classification between observers. Additionally (5), the COI can be used to differentiate between sites in terms of their overall liana canopy competition (precision), but (6) may not be a precise indicator of the site-level mean basal area of lianas in tree crowns. 相似文献
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We studied the impacts of liana cutting as a forest management tool on liana diversity(species richness,Shannon diversity index) and community structure(diameter distribution, basal area, species dominance) in the Asenanyo Forest Reserve, Ghana. Two types of silviculturally treated forests were studied: Logging treated(LT)and Tropical Shelterwood System(TSS) treated forests. An untreated primary forest was included as a control, resulting in three forest management systems. Lianas with diameter C2 cm were identified in ten 40 9 40 m2 plots within each management system. Liana cutting significantly reduced liana species richness, Shannon diversity index, and basal area in the LT forest after two decades.However, liana species richness and basal area werecomparable in the TSS treated and untreated forests, indicating significant recovery in the former after over six decades. S?rensen similarity index of liana species composition between the untreated forest and each of the treated forests was moderate. Our findings suggest that liana cutting most likely influenced the dominance of some liana species. In view of the adverse impact of blanket liana cutting on liana diversity, selective liana cutting is recommended as a means of controlling liana numbers while maintaining liana diversity. 相似文献
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The study determined the impacts of three forest management regimes—logging treated (LT), tropical shelterwood system (TSS) treated, and untreated forest (UF)—on liana abundance, reproduction and climbing guilds, and liana-tree relationship patterns in the Asenanyo Forest Reserve, Ghana. The first two regimes involved liana cutting over 20 and 53 yr ago, respectively. Lianas and their hosts were sampled in 10 randomly demarcated plots (40 × 40 m2) in each regime. Liana abundance and infestation were significantly lower in the LT forest than the UF, whereas these attributes were comparable in the TSS treated and the UF. Overall, the patterns of liana reproduction and climbing guilds were similar in the treated and untreated forests. Tree diameter was positively and significantly correlated to liana load, basal area, and degree of colonization in the treated and untreated forests. Mean liana load was the same on different tree bark types in the forest management regimes. These findings suggest that the impact of liana cutting on liana abundance was still apparent in the LT forest but not in the TSS treated forest. Again, the impacts of liana cutting on patterns of liana reproduction and climbing guilds and liana-tree relationships were not noticeable in the treated forests. 相似文献
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We investigated the distribution and resource values of liana species assessed in six hill complexes of southern Eastern Ghats, India. 143 liana species (DBH (diameter at breast height) ≥1.5 cm) and 32,033 liana individuals were recorded from 110 transects (0.5 ha each covering 55 ha area) in the study sites. The resource values of lianas were broadly categorized into ecological and economic importance. About 90% (129) of liana species and 96% (30,564) of liana individuals were established ecological/economic values. Fruit rewards provided by 76 species and 20,325 individuals constituted the major resource of ecological importance. 82 species and 21,457 liana individuals are of economic importance as medicine, edible fruits, edible and medicinal values, and yet others are used for different domestic purposes including furniture, fuel wood, rope making etc.. Ecologically, the prevalence of succulent diaspores in lianas of Indian Eastern Ghats indicates the animal dependence of many liana species for dispersal and underlines the need for a holistic and whole-forest conservation approach in maintaining forest biodiversity. 相似文献
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昆明市城市绿化树种选择 总被引:1,自引:1,他引:1
昆明市因其优越的自然条件不仅有丰富的植物品种资源,而且引种外来花木的潜力也很大,然而在目前的城市绿化中还存在着树种单一、结构不合理、观赏类型单调、景观效果差、林荫道少、遮荫避日不够等问题。提出了绿化树种选择与配置的若干原则,并捷供了一批拟选择的乔木、灌木、竹类及攀援植物种类名单。 相似文献
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Seed production in tropical timber trees is limited by abiotic resources, pollination and pre-dispersal seed predation. Resource availability is influenced by the number of competing trees and by lianas that often reach high densities in disturbed parts of tropical forests. The distance between conspecific trees affects pollination efficiency and seed predation intensity, and may therefore indirectly affect the long-term sustainability of selective logging. Here we investigate how reproductive status and the number of seeds dispersed per tree are affected by liana load, distance to the nearest conspecifics, number of competing neighbours and tree diameter in the timber trees Cariniana ianeirensis and Terminalia oblonga. The study is based on a large-scale silvicultural experiment in lowland Bolivia. We found that the reproductive status of the two species was negatively correlated with liana cover and positively with tree diameter. In C. ianeirensis the most liana-infested trees dispersed fewer seeds. In T. oblonga the intensity of pre-dispersal seed predation decreased with distance to the nearest conspecifics. There was no evidence that seed viability or seed production decreased with distance to nearest conspecifics in either species as would be expected if isolation resulted in increased self-pollination. Our results indicate that reproduction can be severely reduced in timber trees if the largest, most healthy and least liana-covered trees are logged, but that liana cutting on the remaining seed trees can considerably improve seed production. In some species seed production may be further improved by ensuring that seed trees are located far apart. 相似文献