龙船花属(Ixora)植物研究现状及其园林应用

龙船花属(Ixora L.)植物是优良的木本花卉,种类繁多,遍布世界热带地区。文章对龙船花属植物种质资源,及其抗寒性、抗旱性、光合特性、花期调控、繁殖、切花保鲜等方面的研究现状进行了综述,并归纳总结了龙船花属植物在园林中的配置应用方式。     

Osmoregulation by Means of a Hitherto Unsuspected Osmoregulatory Organ in Two Grapsid Crabs

Cape sugarbirds, Promerops cafer, preferred certain pro tea bushes as nest-sites. These bushes were characterized by relatively large leaves and dense foliage. Nests were usually placed in the central parts of bushes Nest-sites were shielded from the cold night sky, and were associated with relatively favourable air temperatures and protection from wind in a season of unfavourable weather. Data on microclimate of nest-sites, together with those on heat loss from an incubating sugarbird, were interpreted in relation to nest-site selection as adaptive behaviour promoting breeding success through conservation of energy. Sugarbirds nesting relatively high off the ground and in dense vegetation were considered to be decreasing die risk of exposure to predators.     

Recent records of megalopae of the crab Varuna litterata (Fabr.) entering Natal estuaries

An unusual occurrence Involving the stranding of many thousands of megalopae of the crab Varuna litterata on an outgoing tide is recorded. The locality was sandflats adjacent to the mouth of the Mgobezelenl estuary at Sodwana Bay, Natal, In mid-May 1985. Other records of recent local sightings are Included.     

白云鄂博中心公园景观设计

根据白云鄂博中心公园地形地貌,利用区域低洼环境营建湖面,选用大量乡土树种提高绿化覆盖率,并结合白云鄂博矿区地方特色和悠久的历史文化,以营造森林湖水景观为核心,以地方文化特色为主题的生态型公园,为人们提供休憩、运动、娱乐、文化活动等功能于一体的舒适生活空间,使人们在忙碌之余身心得以放松,享受大自然的美景.     

Human Impacts on Forest Biodiversity in Protected Walnut-Fruit Forests in Kyrgyzstan

We used a spatially explicit model of forest dynamics, supported by empirical field data and socioeconomic data, to examine the impacts of human disturbances on a protected forest landscape in Kyrgyzstan. Local use of 27 fruit and nut species was recorded and modeled. Results indicated that in the presence of fuelwood cutting with or without grazing, species of high socioeconomic importance such as Juglans regia, Malus spp., and Armeniaca vulgaris were largely eliminated from the landscape after 50–150 yr. In the absence of disturbance or in the presence of grazing only, decline of these species occurred at a much lower rate, owing to competitive interactions between tree species. This suggests that the current intensity of fuelwood harvesting is not sustainable. Conversely, current grazing intensities were found to have relatively little impact on forest structure and composition, and could potentially play a positive role in supporting regeneration of tree species. These results indicate that both positive and negative impacts on biodiversity can arise from human populations living within a protected area. Potentially, these could be reconciled through the development of participatory approaches to conservation management within this reserve, to ensure the maintenance of its high conservation value while meeting human needs.     

深圳梧桐山风景区林下主要植物群落景观的评价与林分改造对策

根据研究对象的特性和研究目的,确定植物景观评价因子及其权重,建立城市森林公园林下景观的评价模型。采用AHP法对深圳梧桐山风景区林下典型群落进行了评价,最后得到景观美景度值,就平均得分在6分以下的指标提出相应的改造对策,为森林公园的建设提供依据。     

林窗理论在山地型城市森林建设中的应用前景

从森林循环演替、森林特殊的生境、边缘效应、森林植被物种多样性及森林景观格局多样性等方面论述了林窗干扰作用,并讨论了林窗理论在山地型城市森林建设中森林动态管理、森林景观格局优化和林相改造等方面的应用前景。     

观赏竹与建筑景观配置研究

为探索观赏竹与建筑的景观配置,以北京市观赏竹和建筑的配置实例为研究对象,分析了观赏竹与各类建筑的种植方式、配置手法和景观作用;总结了观赏竹与建筑配置的景观特色,为观赏竹景观的营造提供科学依据.     

城市空间规划的后现代策略

对后现代时期城市空间规划策略进行了分析,指出了后现代城市空间规划思想的核心逐渐由强调功能理性转变为向人性、文化、自然等多元价值的回归,期望对当代中国城市建设提供启发。     

浅论城市道路景观营造要素

指出了城市道路景观营造是道路景观营造的重要组成部分,从城市道路景观中的静态景观和动态景观两方面阐述了景观营造的相关内容,归结出了城市道路景观营造的原则,以为城市道路景观营造、城市道路景观分析与评价提出合理的、人性化的依据。