园林绿化树种枝叶滞尘效果分类研究

园林绿化树种的滞尘能力是评价其园林绿化效果的重要指标。通过对黑龙江省主要园林绿化树种在不同环境条件下的枝叶滞尘效果测定,先将49种(类)园林绿化树种的滞尘能力划分成5个等级,然后用判别分析法进行订正,得出科学合理的分级结果。     

基于应用频度的唐山市园林树种应用研究

通过对唐山市区园林树种进行全面调查,根据唐山市自然生态环境特点和植被分布规律,对市区内主要绿地类型中现有园林树种进行统计,结合运用城市生态学、园林美学、植物群落学等学科的相关理论,根据各树种应用频度,对隶属于46科103属184种(含变种、变型和品种)的园林绿化树种进行了分析及评价,筛选出一批适合当地生长、能适应当地的气候条件、对维护城市生态平衡、保护和改善环境条件、满足园林绿地功能性、景观性、文化性等多方面的需求起主要作用的标志性地带型植物,为唐山市园林植物的应用研究提供依据。     

乡土树种在园林绿化中的开发利用

所谓乡土树种,是指本地区天然分布树种或者已引种多年且在当地一直表现良好的外来树种。以扎兰屯地区为例,植物种类共有96科334属709种。随着园林绿化的迅速发展,乡土树种的开发利用也在逐步引起重视。本文根据有关文献资料,结合现状,对乡土树种在园林绿化中的开发利用作些粗浅     

层次分析法在城市园林绿化树种选择中的运用——以武威市为例

通过对干旱区城市(武威市)园林绿化树种的调查,运用园林树木学、森林生态学、园林景观学等学科的基本理论和层次分析法的原理与方法,对105种园林绿化树种的适应性进行了评价和综合分析,指出综合评价体系准则层权重值的大小是选择园林树种着重考虑的影响因子。武威市园林树种综合评价结果表明:综合评价Ⅰ级共有28种,综合评价Ⅱ级共有39种,综合评价Ⅲ级共有26种,综合评价Ⅳ级共有12种。     

异叶南洋杉扦插繁殖研究

异叶南洋杉 (Ａｒａｕｃａｒｉａｈｅｔｅｒｏｏｐｈｌｌａ) ,亦称诺福克南洋杉、美丽南洋杉 ,属南洋杉科 ,常绿乔木。异叶南洋杉原产澳洲 ,是当地主要用材树种 ,也是世界 5大观赏树种 ,我国广东、福建等地均有引种栽培 ,其适应性强 ,树姿优美 ,是南方园林绿化的优良树种。异叶     

乌海市园林绿化树种资源分析

乌海现有园林绿化树种32科55属103种,其中乔木57种,小乔木7种,灌木35种,藤本植物4种;常绿树种15种,落叶树种88种;阴性树种9种,阳性树种94种;酸性土壤树种17种,中性39种,碱性47种;乡土树种47种;应用最为广泛的园林绿化树种是新疆杨和家榆,其次是油松、樟子松、白杄、旱柳、刺槐、丁香。园林绿化树种的乡土率为45.6%。园林绿化树种中中生树种较多,占94%,所以应加强对耐旱性和乡土树种的应用,特别是乌海市作为干旱地区,水资源更为珍贵,更应发展节水的乡土树种。     

槭树属彩叶树种综合性能分析与评价

应用层次分析法(AHP),对庆阳市11种槭树属彩叶树种进行综合评价。结果表明:制约各树种观赏性、适应性、生物学特性的系列因素中,叶色占总评价的权重最大,为22.71%,其次为耐寒性与呈彩期,分别占22.36%、20.31%;综合分析评判,11个树种中表现良好的是金叶复叶槭、日本红枫、元宝枫3个树种,复叶槭、青榨槭、花叶复叶槭相对较差,其余5个树种综合性能一般。评价结果对当地槭树属彩叶树的引种和应用工作具有参考意义。     

层次分析法在乡土景观树种选择中的应用

指出了乡土树种的选择和应用可尽快形成具有地域特色和地域文化的园林景观风貌,是解决生态现状、建设生态型园林城市的必然趋势。通过对阜阳市乡土树种的调查研究,采取层次分析评价法,对当地乡土树种进行了赋值评价,以选择适应性强、观赏价值高的优良乡土树种。结果表明:在调查的50科160多种乡土树种中,得分较高、已在园林绿化推广应用的有68种。     

城市园林绿化树种应用检索系统的开发与应用

当前,城市发展建设中对园林绿化树种重视程度和需求量增加,迅速准确地在我国众多的植物树种中,选择适宜于特定城市的园林绿化树种,成为城市园林绿化的首要问题。针对这一问题,采用PowerBuilder9.0开发工具设计开发城市园林绿化树种应用系统。本系统不仅具备能够对已收录的大量的植物树种中特定科、属、种植物的特性进行查询,更重要的是可以根据绿化城市的实际需要灵活设置绿化评价指标体系,从而实现对特定树种的绿化评价与检索功能。本系统的开发与应用可以为特定城市的园林绿化提供快速的树种选择方案,为城市园林绿化规划的制定提供科学的导向和决策的依据。     

禄劝县城树种规划研究

对禄劝县城园林绿化中的树种应用现状进行了实地调查,记录了现有树种123种,分属52科94属,其中裸子植物14种,被子植物109种,常绿树种92种,落叶树种31种.对乡土树种应用不足、绿化树种色彩单一等绿化中存在的问题进行分析,确定了树种规划原则及指标体系.藉此提出了6种园林绿化基调树种,16种骨干树种,302种一般树种和84种潜在价值树种.     

造林树种生态适应性评价研究进展

简述了树种选择和立地类型研究这两个造林的必备条件,综述了单一树种、同类树种、多类树种在不同立地条件下的生态适应性评价方法。旨在通过对不同立地条件下树木生长表现出的差异性进行生态适应性评价,确定不同立地类型适宜的造林树种,为选择造林树种提供依据。     

昆明市行道树种调查分析与评价

运用数学的方法科学地选择道路绿化树种并发挥其最大效益,对城市绿化树种选择具有重要意义。本文通过对昆明二环以内行道树的抽样调查,从生态适应性、经济性、生态效能等方面全面系统地建立昆明市行道树种的综合评价指标体系,并对昆明34种行道树进行综合评判与分级,进而为昆明行道树树种的选择和应用提供科学依据。     

城市森林生态景观建设优良树种评价模型构建方法初探

通过专家咨询法,从生态适应性、观赏价值、抗逆性以及生态效益等方面确定了城市森林生态景观建设优良树种选择评价的3级指标;运用层次分析法,考虑不同专家评价水平,结合熵技术修正进行指标权重评价方法的研究,初步探索城市森林生态景观建设优良树种选择综合评价模型的构建方法。利用该评价模型,在广东省珠海市筛选出20种值得推广使用的优良乔木树种。     

太行山农林复合生态系统中针阔叶树种的选择

应用软系统归纳集成法,确定了太行山主要针阔叶树种生态功能的评价指标体系与权重,其中一级评价指标5个,二级评价指标9个。利用大体一致的200多块样地的调查资料,对太行山广泛分布的针阔叶树种的生态功能进行了分类评价、优劣排序和聚类分析,将评定等级为优良的9种阔叶树和5种针叶树,作为农林复合生态系统建设中可广泛应用的树种,最后从海拔、坡向、年均降水量、气温、土壤等方面总结了优良针阔叶树种的适宜立地条件。     

Species distribution models applied to plant species selection in forest restoration: are model predictions comparable to expert opinion?

An expert on local flora usually is the best option for plant species selection in most ecological restoration projects; although species selection often needs to be dealt with swiftly as well as on a limited budget, and obtaining the opinion of a local expert may not always be an economically viable alternative. In such cases, species distribution models (SDM) may offer a faster and more cost effective alternative. We asked six experts to rank native tree species according to their suitability at 24 forest sites. The predictive performance of the suitability rankings was evaluated by assessing their ability to discriminate present from absent species in the observed tree assemblages at each evaluation site. We used the area under the receiver operating characteristic curve to calculate the probability that the estimated suitability for a species present at a particular evaluation site is greater than the estimate for an absent species (both picked at random). Suitability rankings were also obtained from the predictions of SDM and the same procedure was used to estimate the predictive performance of the set of models at each site. The experts offered concordant suitability rankings at almost every evaluation site. There were no significant differences in the predictive performance of the SDM and four of the experts, although the SDM performed slightly better than the other two experts. Our results point to the suitability of the proposed species distribution modeling approach to obtain fast and cost effective recommendations for species selection in forest restoration projects.     

澄江县抚仙湖近面山绿化规划研究

依据景观生态学的基本原理,提出澄江县抚仙湖近面山区域的生态景观设计与绿化规划方案:①对可视域区域原有的受损生态系统进行生态重建和生态修复;②对坡度25°以上旱地实施退耕还林,对坡度25°以下的山地进行生态优化和抚育;③对石灰山山地选用乡土树种抚育现状植被;④结合道路与景观的距离,对环湖公路、澄江至帽天山公路、澄江至阳宗公路和环湖岸绿化进行植物种类的优化配置;⑤对帽天山国家地质公园的矿山迹地开展生态修复、造林和植被抚育等。规划方案旨在促进区域生态旅游价值的提升和水环境保护。     

我国东北地区树木引种驯化概况及发展策略

引种驯化是林木育种的重要手段,其不仅丰富了本地的树种资源,改善现有树种组成及比例,而且带来显著经济效益,也是保护生物多样性和景观生态平衡的需要,因此受到人们的极大重视。文中综述我国东北地区树木引种驯化情况,发现截至目前已成功引种63科、119属、500余种,主要包括用材树种、经济树种、观赏树种和生态树种;总结引种过程中的成功经验,讨论其中存在的问题,提出树木引种发展策略,以期为今后东北地区开展树木引种工作提供参考。     

Spatial patterns of past wood exploitation,natural wood supply and growth conditions: indications of natural tree species distribution by anthracological studies of charcoal-burning remains

In close-to-nature silviculture one strives to derive the advantages of the natural adaptations of tree species to different growth conditions. Evidence of the natural distribution of tree species is obtained through vegetation science (recent ground vegetation, primeval forest relicts), studies of old written sources, and pollen and macrofossil analyses. Here we have analysed macrofossil samples of charcoal kiln sites and the recent ecological conditions in the vicinity of these sites, as well as secondary written sources on forest and land-use history. From charcoal analysis of kiln sites we were looking for spatial patterns of past tree species exploitation, with special regard to regional and local differences in the forest growth conditions and the natural wood supply. Therefore, we selected remote forest areas characterised by a high density of kiln sites and significant differences in the ecological conditions. The sample sites ranged over a landscape profile of 40 km, covering many ecological site types. The anthracological results of 181 post-medieval kiln sites were evaluated, considering two spatial scales: the total 40-km profile and a fine-scale profile of 4 km. Considering the charcoal material analysed as a whole, all of the tree taxa to be expected based on the natural conditions were found. The frequencies of the exploited taxa also reflected a natural situation. Wood of the climax vegetation, Fagus, Abies and Picea, was mainly used and all other taxa were quantitatively unimportant. The results for the individual sites showed considerable differences in taxa composition, from which regular spatial patterns of the past tree species distribution were deduced. These regional and local patterns are explained by natural differences in the ecological conditions in the vicinity of the sample sites. At the same time, new indications of the natural tree species composition of our forests are inferred. A pronounced dependency of charcoal production on the local natural wood supply is discernible. No indications of tree species selection or forest degradation could be found.     

略谈吕梁地区退耕还林布局及树种选择

退耕还林是国家生态建设重点工程之一，结合吕梁市实际情况，就退耕还林整体布局与树种选择进行了详细分析，明确提出了退耕还林布局的5大重点区域以及树种选择的3条基本原则。     

园林绿化树种资源及其应用评价

通过对广西林科院树木园中心园区绿化树种的调查，查阅相关文献并咨询专家，从适应性、生态效益、观赏特性、人文历史价值4个方面共12个评价指标建立广西林科院绿化树种综合评价体系，对128个尚未广泛应用的树种进行综合评价与分级。