景观绿化特选景松栽种成活率控制

松柏植物是园林绿化中常用作观赏的树种。随着城市建设的发展,越来越多的特选景松在景观大道绿化建设工程中得到应用,但在工程建设中特选景松单株价格高昂,苗木成本高,加之施工过程中栽种、养护经验欠缺,容易导致特选景松成活率得不到保证,从而增加项目成本。基于济南市天桥区梓东大道改造提升工程施工1标段特选景松栽种施工,探讨景观绿化特选景松栽种成活率的控制措施及成效。总结的经验可供今后类似工程借鉴。

《故都的秋》中的对比艺术

《故都的秋》是一篇饱蘸作者深情的写景散文。作品融情、景、物、体、声、色、味、形于一炉,描绘了一幅如诗如画、如火如荼的北国故都的秋韵长卷,成为颂秋艺苑中的一颗璀灿金珠。它的艺术魅力呈立体型,让人神游字里行间,尽情品尝吮吸,本文拟就它的对比艺术试作分析。 文章非常巧妙地借助于对比手法,精心安排材料,着力表现主题,形成了其独特的艺术品味。作者将北国之秋与江南之秋二者进行直接或间接的对比描写,构成了文章的基本框架;中间溶进一段对人类皆钟情于秋的议论文字,拓展了对比的时空范畴。其对比手法贯穿于文章的始末,具体表现为: 一、篇首 概貌特征的对比 作者在开篇用精炼的笔墨,从总体上勾勒出北国之秋与江南之秋的概貌特征,以形成鲜明的对比: 北国之秋,特别地来得清、来得静、来得悲凉。

Research on the Landscape Protection of Ancient Towns in Sichuan Province

This article elaborates the landscape characteristics of some ancient towns in detail in Sichuan area combined with examples. Aiming at the negative influence from urbanization, some countermeasures are put forward such as the need for legislation, respect for the natural environment, extension of the historical cultural significance of towns, and development of the cultural tourism industry and so on.

试论微型小说的环境描写

微型小说的环境描写，依托于具体的景与物的描写。其形式可分为无景之景、全景之景、特写之景和白描之景四种。这些形式主要通过借人物的活动来暗示、借情节的跳跃来弹塑、借诗意的笔调来美化等方式实现。微型小说的成功的环境描写，往往不拘传统，超越自身，可谓颇具匠心和充满活力。

东边日出西边雨——上海五月楼市营销动态综述

五月楼市没有主旋律:一边是清盘竞价、拍卖收网,168家房产公司执照吊销,45家公司资质难保;一边是一个一个新盘,意气奋发,从容入市,连续两月数量居高不下,宣传声势一浪高过一浪。这一高一底两种不和谐的声调,勾画出五月楼市“东边日出西边雨”的独特景观。 笔者注意到五月份的房产广告中频频使用了“福利分房末班车”、“货币化分房”等词句,看来敏感的房地产商们已经注意到国家政策的变化,力图抓住这次市场传换的时机。而延安路高架建设试行货币化动迁的消息,也令不少人大为兴奋,虽然最后选择货币化的并不如人们预想的多。如静安区域,2千户居民只有10％选择了货币化安置,但毕竟展示了一个全新的客户市场。 自从楼市“大哥大”世纪之门。

农机大降价还有多少魅力

让利销售、优惠展销、厂家直销……这一独特景观已成为1997年农机市场上的主旋律。无论是主渠道农机公司,还是系统外经营单位;无论是国家级名牌,还是地方名牌。

车轮上的中国

世界为中国发烧 令人窒息的尾气使天空变得模糊,拥挤的交通让出行变得烦人。在这个世界上最后的汽车大繁荣的中心——北京,张苹正忙乎着点钱,因此对这种状况毫不在意。张是北京最大的汽车销售场北京亚运村汽车交易市场的一名销售商。她很热情地说:“今年年初以来,销量就非常不错。”2001年,张卖出了1700辆中国制造的夏利,每辆大约6000美元。而今年头8个月,在降价的刺激下,她卖出了7000多辆。

Effects of Land Cover on Soil Organic Carbon Stock in a Karst Landscape with Discontinuous Soil Distribution

Land cover type is critical for soil organic carbon （SOC） stocks in territorial ecosystems. However, impacts of land cover on SOC stocks in a karst landscape are not fully understood due to discontinuous soil distribution. In this study, considering soil distribution, SOC content and density were investigated along positive successional stages （cropland, plantation, grassland, scrubland, secondary forest, and primary forest） to determine the effects of land cover type on SOC stocks in a subtropical karst area. The proportion of continuous soil on the ground surface under different land cover types ranged between 0.0% and 79.8%. As land cover types changed across the positive successional stages, SOC content in both the 0-20 cm and 20-50 cm soil layers increased significantly. SOC density （SOCD） within O-lOO cm soil depth ranged from 1.45 to 8.72 kg m^-2, and increased from secondary forest to primary forest, plantation, grassland, scrubland, and cropland, due to discontinuous soil distribution. Discontinuous soil distribution had a negative effect on 8OC stocks, highlighting the necessity for accurate determination of soil distribution in karst areas. Generally, ecological restoration had positive impacts on SOC accumulation in karst areas, but this is a slow process. In the short term, the conversion of croplandto grassland was found to be the most efficient way for SOC sequestration.

Ecosystem service delivery in Karst landscapes： anthropogenic perturbation and recovery

Covering extensive parts of China, Karst landscapes are exceptional because rapid and intensive land use change has caused severe ecosystem degradation within only the last 50 years. The twentieth century intensification in food production through agriculture has led to a rapid deterioration of soil quality, evidenced in reduced crop production and rapid loss of soil. In many areas, a tipping point appears to have been passed as basement rock is exposed and 'rocky desertification' dominates. Through the establishment of the "Soil processes and ecological services in the karst critical zone of SW China"(SPECTRA)Critical Zone Observatory(CZO) we will endevaour to understand the fundmental processes involved in soil production and erosion, and investigate the integrated geophysical-geochemical-ecological responses of the CZ to perturbations. The CZ spans a gradient from undisturbed natural vegetation through human perturbed landscapes.We seek to understand the importance of heterogeneity insurface and below-ground morphology and flow pathways in determining the spatial distribution of key stocks(soil,C, vegetation, etc.) and their control on ecosystem service delivery. We will assess the extent to which the highly heterogeneous critical zone resources can be restored to enable sustainable delivery of ecosystem services. This paper presents the CZO design and initial assessment of soil and soil organic carbon stocks and evidence for their stability based on caesium-137(^(137) Cs) data.

Study on Jinan urban construction planning based on the protection of karst landscape

Study on urban construction planning based on karst landscape protection contributes to sustainable development of urban construction in karst area. Jinan is a city famous for karst spring water. Karst landscape plays a decisive role in urban construction. Through hydrogeological analysis, the distribution characteristics of karst mountain, cave, gully and flat dam in Jinan are analyzed. It is revealed that various karst landforms are involved in the spring circulation process to varying degrees. Some karst landforms have been destroyed in the process of urban construction and the karst landscape has been overexploited resulting in the direct or indirect weakening of spring water recharge and infiltration capacity and the decrease of spring water flow. Through the study of the principle of organic combination of karst landscape and urban construction planning, on the basis of protecting the ecological environment of the south, paying attention to the overall protection of the karst geomorphology system and the principle of accessibility of the karst landscape, the development countermeasures guided by urban planning are put forward based on karst landforms protection. On the basis of fully considering the special karst landform conditions in Jinan, the countermeasures are that the ecological control red line of urban construction planning should be set up based on karst mountains and valleys in southern of Jinan City. It is suggested that the bare carbonate rock continuous mountain foot line in the direct recharge area should be taken as the south control red line of urban development and included in the overall planning. The urban landscape is mainly displayed in the main axis based on karst mountains and springs, constructing East-West Axis-characteristic Landscape Belt along the Wufeng Mountain-Langmao Mountain-Hero Mountain-Qianfo Mountain-Long cave-Panlong cave-Jinping Mountain line and North-South Axis Landscape Belt along the Baotu SpringQianfo Mountain line, Baiquan-Panlong cave line, Baimai spring-Dajian Mountain line. Based on the karst river valleys and the river system, the urban spatial pattern is constructed, forming ecological corridor, restoring infiltration function of river. The form of urban construction should be shaped based on karst landform and the river system. The main form is semi-star like radiation type and the combination of central intensive type and zonal type. Based on the whole protection of karst geomorphology system and the scientific molding of karst landscape, the ecological landscape city with the symbiosis of spring and urban can be built.

Application of Regional Characteristic Elements in Designing of Kindergarten Environmental Landscapes

Presently, there are many problems on kindergarten designing. For example, visual perception is always the priority for outdoor landscapes, and sandpit and children＇s slide are always devices for attracting children. The research analyzed the role of regional characteristics in designing kindergarten landscapes and proposed that the regional elements should be taken into consideration, providing references for characteristic designs of kindergarten landscape.

Study on the Characteristics of Ecological Water Requirement in Maijishan Scenic Spot

[Objective] This study aimed to explore the characteristics of ecological water requirement in Maijishan Scenic Spot. [Methed] The characteristics of ecologi- cal water requirement in Maijishan Scenic Spot were analyzed based on,the data of soil humidity and meteorology of the spot. [Result] The result showed that the actual annual ecological water requirement in the spot was 678×10^6 m^3, and the proportion of soil water and evapotranspiration were 21% and 79%, respectively; the minimum annual ecological water requirement quota in the spot was 480.27×10^6 m^3, and the proportion of soil water and evapotranspiration were 16% and 84%, respectively; the minimum annual suitable ecological water requirement quota in the spot was 624.22×10^6 m^3, and the proportion of soil water and evapotranspiration were 18% and 82%, respectively. The precipitation was 614×10^6 m^3, and consumptive water surplus reached up to 78×10^6 m^3. The years when the precipitation was higher than the evapotranspiration accounted for 76%. Since 1980s, the evapotranspiration showed a linearly increasing trend. The precipitation was higher than the evapotranspiration from Jun. to Oct. and less than the evapotranspiration from Nov. to Dec. and Jan. to May. Evapotranspiration water requirement was regulated by soil water. The dis- parity between precipitation and evapotranspiration was huge in spring, thus having certain influence on waterfalls and streams in the spot. [Conclusion] The results of this study provided a basis for the rational use and long-term planning of the water sources in Maijishan Scenic Spot.

Simulating Impact of Larch Caterpillar(Dendrolimus superans)on Fire Regime and Forest Landscape in Da Hinggan Mountains,Northeast China

Larch caterpillar (Dendrolimus superans) is very common in the Da Hinggan Mountains, Northeast China, affecting fire regime and forest ecosystem change at large spatio-temporal scales. In this study, we used a spatially explicit landscape model, LANDIS, to simulate the changes of fire regime and forest landscape under four larch caterpillar disturbance intensity levels scenarios in Huzhong forest area, northern of Da Hinggan Mountains. The results indicate that larch caterpillar disturbances would decrease fine fuel load and increase coarse fuel load in the 300 simulation years. Larch caterpillar disturbances would decrease fire frequency in the first 200 years, and the disturbances also decrease fire intensity and fire risk in the early and late stage of simulation. Larch caterpillar disturbances would decrease the area percent of larch cohorts and increase the proportion of white birch, and increase the degree of aggregation of white birch as a result of its strong seed dispersal and colonization ability. Disturbances would also decrease the mature and over-mature larch cohorts and increase all cohorts of white birch, especially the mature and over-mature cohorts. Larch caterpillar disturbances will decrease the stability of forest landscape, therefore,some measures preventing in- sect outbreak and ensuring the sustainable management of forest ecosystem should been taken in the study area.

Source-sink landscape spatial characteristics and effect on non-point source pollution in a small catchment of the Three Gorge Reservoir Region

The source and sink landscape patterns refer to landscape types or units that can either promote positive evolvement of non-point source(NPS) pollution process, or can prevent/defer the ecological process, respectively. Therefore, the role of a catchment landscape pattern in nutrient losses can be identified based on the spatial arrangement of source and sink landscapes. To reveal the relations between landscape spatial characteristics and NPS pollution in small catchment, a case study was carried out in a Wangjiagou small catchment of the Three Gorges Reservoir Region(TGRR), China. Google earth imagery for 2015 were processed and used to differentiate source and sink landscape types, and six subcatchments were selected as sample regions for monitoring nitrogen and phosphorus nutrients.Relative elevation, slope gradient and relative flow length was used to construct the Lorenz curves of different source and sink landscape types in the catchment, in order to assess the source and sink landscape spatial characteristics. By calculating the location-weighted landscape indices of each subcatchment and total catchment, the landscape spatial load characteristics affecting the NPS pollution was identified, with a further Pearson correlation analysis for location-weighted landscape indices and nitrogen-phosphorus monitoring indicators. The analysis of Lorenz curve has revealed that the obtained distribution trend of Lorenz curve and curve area quantified well the spatial characteristics of source and sink landscape pattern related to the relative elevation, slope gradient and relative flow length in small catchment. Results of Pearson correction analysis indicated that location-weighted landscape index(LWLI) combining of terrain and landscape type factor did better in reflecting the status of nitrogen and phosphorus loss than the indices related to relative elevation, slope gradient and relative flow length.

A learning-based method to detect and segment text from scene images

This paper proposes a learning-based method for text detection and text segmentation in natural scene images. First, the input image is decomposed into multiple connected-components (CCs) by Niblack clustering algorithm. Then all the CCs including text CCs and non-text CCs are verified on their text features by a 2-stage classification module, where most non-text CCs are discarded by an attentional cascade classifier and remaining CCs are further verified by an SVM. All the accepted CCs are output to result in text only binary image. Experiments with many images in different scenes showed satisfactory performance of our proposed method.

Hazards and Landscape Changes(Degradations) on Hungarian Karst Mountains Due to Natural and Human Effects

In order to study the karstological processes within the karst ecological system,the geohazards and degradation of karst landscapes on the karst areas of the Bakony mountains(Hungary),we investigated the abiotic elements of the environment,soil and cover deposits,erosion soil decay;the changes in the quantity and quality of karst waters:contamination at swallow holes,contamination of karst springs;and the biogenic factors:surface vegetation coverage by the corine land cover method,plant-ecological examinations,qualification of surface waters with the help of biological water labeling.We recognized that the increasing human activities during the past few centuries have had significant impact on the investigated landscapes of karst areas because of their spatial sensitivity.In the scope of our research we concluded that the landscape changes due to natural and human effects can vary strongly on the different karst areas.These differences can arise from the climatic and geomorphologic situation,the coverlayer's qualities,etc.,but primarily from the different utilization of the investigated karst areas(e.g.the intensity,characteristics and territorial extension of utilization).On the spot investigation we detected traces of new and fast geomorphological processes(gully formation,landslides,collapses,new sinkhole development) and landforms(sinkholes,gullies,swallow holes),which are clear evidences of the effect of climatic changes.

Analysis on Cultural and Aesthetic Characteristics of Chinese Traditional Patterns

China traditional patterns are of various kinds,and the performance of the content is also very rich.In the development of traditional pattern evolvement process,it experienced a plurality of historical period change,and it has a certain period of time the representative style, so the traditional patterns have more cultural meaning.We can say that development track Of traditional pattern have a close relationship with the Chinese history and culture ,which reflects the aesthetic characteristics of different cultural background of each period.In this paper, from the analysis of Chinese traditional patterns of aesthetic characteristics in different periods,it researches the cultural meaning of traditional patterns.

Geochemistry of sedimentary rocks from Permian–Triassic boundary sections of Tethys Himalaya: implications for paleo-weathering, provenance, and tectonic setting

The geochemical characteristics of two sections—the Permian–Triassic boundary(PTB) Guryul Ravine section, Kashmir Valley, Jammu and Kashmir,India; and the Attargoo section, Spiti Valley, Himachal Pradesh, India—have been studied in the context of provenance, paleo-weathering, and plate tectonic setting.These sections represent the siliciclastic sedimentary sequence from the Tethys Himalaya. The PTB siliciclastic sedimentary sequence in these regions primarily consists of sandstones and shales with variable thickness. Present studied sandstones and shales of both sections had chemical index of alteration values between 65 and 74; such values reveal low-to-moderate degree of chemical weathering. The chemical index of weathering in studied samples ranged from 71 to 94, suggesting a minor K-metasomatism effect on these samples. Plagioclase index of alteration in studied sections ranged from 68 to 92, indicating a moderate degree of weathering of plagioclase feldspars. The provenance discriminant function diagram suggests that the detritus involved in the formation of present studied siliciclastic sedimentary rocks fall in quartzose sedimentary and felsic igneous provenances. These sediments were deposited in a passive continental margin plate tectonic setting according to their location on a Si_2 O versus K_2O/Na_2 O tectonic setting diagram.

Using Mixed Methods to Investigate the Relationship Between Student Motivation and Academic Achievement From Socio-Cultural Perspective

Language learning is a complex process for many reasons. First, it is closely related to linguistics. Second, language is social as it occurs within certain social contexts. And finally, it is individual. Personal characteristics such as experience, gender and age, attitude and aptitude, motivation, beliefs, self-confidence, and anxiety greatly influence language learning. Among these variables, motivation is considered to be one of the most important factors affecting the success of second or foreign language learning. However, the relationship between motivation and educational achievement is not quite clear. In the current literature, motivation is regarded as socially constructed, therefore as dynamic rather than static. Little research has been conducted on the motivation of Vietnamese students studying English as a compulsory curriculum component rather than as a major from a socio-cultural perspective. Understanding the relationship between student motivation and academic achievement as well as the socio-cultural factors that affect students＇ motivation will be an important contribution to motivation theory. Therefore, the situation requires longitudinal and in-depth research into student motivation, the factors affecting it during the learning process, and the relationship between student motivation and academic achievement. A mixed method approach has been chosen to meet the needs of the study. It is believed that insights in these areas will help address the issue of motivation at the Police University.

Imagery in Pride and Prejudice

Within the theoretical framework of English rhetoric, this paper analyzes the effect of imagery as a rhetorical device by Jane Austenin the novel Pride and Prejudice （2006）. Instances are cited with the use of imagery respectively in character portraits, dialogues, and scenes. It proves that an integrated use of this rhetorical device is an important means for vivid and impressive accounts in literary works, for it helps to build up the context for characterization, presenting the characters alive and distinctive, and effectively reveal the theme of the novel, bringing about authentic feelings to readers.