共查询到20条相似文献，搜索用时 140 毫秒
1.
2.
3.
4.
介绍节约型园林的理念及沈阳市的具体实践如调整园林植物结构、应用节约型植物、"园林垃圾"变废为宝、应用新技术提高树木养护水平等,并提出今后沈阳市在节约型园林建设方面的设想。
相似文献
5.
文章通过对泰州市彩叶植物应用情况的调查与分析,提出了彩叶树种应用的建议,并展望了彩叶植物在泰州市园林中的广阔的应用前景。
相似文献
6.
分析低碳园林的实现途径,旨在更好地推广低碳理念,同时为低碳园林建设提供理论依据,也为今后低碳理念在园林景观设计中的进一步应用提供参考资料。
相似文献
7.
8.
文冠果的特性及其开发应用 总被引：1，自引：0，他引：1
文冠果是我国特有的一种集观赏、绿化、油料、药用于一身的优良树种,也是优良园林绿化树种,具有很大的开发利用价值。文中阐述文冠果的植物属性与其生物学特性,分析文冠果在城市绿化中的园林应用方式及开发利用的前景。
相似文献
9.
银杏是我国特有的孑遗植物,以"活化石"闻名于世,具有独特的观赏特性,并具有深厚的人文色彩,在我国已有几千年的栽植历史。本文从银杏的生态习性、文化意蕴、资源开发利用以及在园林中的应用等方面予以介绍。
相似文献
10.
12.
Qian Wang Ning Wu Peng Luo Shaoliang Yi Weikai Bao Fusun Shi 《Frontiers of Forestry in China》2008,3(2):171-176
Mosses cover most of the forest floor of subalpine forests at the eastern edge of the Qinghai-Tibetan Plateau, the origin
of many important rivers in China. They play a crucial role in preventing soil erosion and conserving large amounts of water
thereby regulating the water budget of local ecosystems. This area has a harsh climate due to low temperatures and low air
pressure at high elevations. But the temperature varies considerably during the growing season, which does not favor the regeneration
of spruce seedlings on clear-cuts after logging. Leaves of mosses have a single layer of cells and are thus sensitive to environmental
changes. This attribute may be useful for monitoring environmental conditions and guide artificial regeneration. The growth
of mosses has never been studied in this area and the variables indicating their growth in the subalpine forest ecosystems
still needs investigation.
Growth rates of mosses have been rarely studied worldwide because the methods are time consuming and often inaccurate. A more
simple and accurate method for measuring moss growth would help and encourage relevant research. We have found a method that
will promote the efficiency in field measurements. Because of the special growth properties of mosses, the apical cell of
branches initiates growth and the preceding leaves will stay where they were as the tips grow. Once mosses are marked with
red oil at the tip of branches surrounded by young leaves, that portion of the branch above the marked leaves represents growth
after labeling.
Two plots, one in an old-growth spruce forest and another in a nearby clear-cut, were selected to label mosses in a subalpine
area of western Sichuan Province during the growing season in 2001. The labeling was done on May 7 and measurements were made
on August 7. Microclimate measurements on both sites were simultaneously carried out.
Of the six mosses, five species were present in both the forest and on the clear-cut. One species, Entodon conncinus, was found only on the clear-cut. The growth rates of mosses varied among species and habitats. Hylocomium splendens grew the fastest while Dicranum assamicum had the slowest growth rate. Habitat conditions have a distinct effect on the growth of Hylocomium splendens, Dicranum assamicum and Thuidium lepidoziaceum and their growth rates were higher in forests than on clear-cuts. The growth rates of these mosses increased as their habitat
approached the forest. Actinothuidium hookeri and Rhytidiadelphus triquetrus have moderate growth rates and is almost entirely independent of the type of habitat. The mosses can therefore be classified
into habitat-sensitive and habitat-insensitive types. Analysis of microclimate characteristics shows that from May to July,
the solar radiation level is lower and the environment is drier in the forest than those on the clear-cut. But a vapor pressure
deficit (VPD) regime shows that the VPD in the morning is almost always lower in the forest than that on the clear-cut. With lower radiation and VPD, forests are more favorable to moss growth. For habitat-insensitive species, favorable micro-topographic factors might have
offset the effect of habitat type.
VPD is strongly correlated with the growth of mosses. Eco-physiological characteristics, such as poikilohydry, play an important
role in the survival and growth of mosses under harsh climatic conditions. Temperature and humidity are two factors critical
for seedling establishment in artificial regeneration processes in the subalpine areas of western Sichuan. Since the growth
of mosses is a function of the two factors, moss growth rates can be used to indicate the more favorable habitats. Therefore,
the status of moss growth can be used to indicate habitats potentially favorable to the growth of tree seedlings.
__________
Translated from Journal of Plant Ecology, 2007, 31(3): 464–469 [译自: 植物生态学报] 相似文献
13.
Total phenolic content, reducing power, antioxidant and free radical scavenging activities of ethanol extracts of five mosses were determined in vitro. No correlation between the total phenolic content and antioxidant or scavenging activities was found. 相似文献
14.
15.
The antimicrobial activity of the methanol extracts of eight mosses species were evaluated at 30 mg/ml concentration against the tested microorganisms. 相似文献
16.
17.
The present study was designed to evaluate the antimicrobial activity of ethanolic extracts of 15 Indian mosses. The antibacterial activity of ethanolic extracts was investigated against five G(+) and six G(-) bacterial strains. Antimycotic activity was assayed against 8 fungi. Sphagnum junghuhnianum, Barbula javanica, Barbula arcuata, Brachythecium populeum, Brachythecium rutabulum, Mnium marginatum and Entodon cf rubicundus were found to be most active against all the organisms. 相似文献
18.
19.