Space Pattern of Rural Leisure Tourism Development in Southwest Minority Area——A Case Study of Ethnic Minority Area in Southeast Chongqing

On the basis of analysis of current research documents on rural leisure tourism, taking ethnic minority area of Southeast Chongqing for example, the paper expounded ecology, culture, authenticity and uniqueness of rural leisure tourist resources in ethnic minority area, and city-dependent, scenic area-dependent, traffic route-dependent and remote characteristic village type of space pattern.

Analysis on Landscape Pattern of Urban Green Space in Tianjin City

Based on IKONOS satellite image in August of 2008,and by using GIS technique and spatial pattern analysis software FRAGSTATS,the paper analyzed landscape pattern of urban green space in Tianjin City from the aspects of patch composition and level of category and landscape.The result showed that there were manymin-sized patches in Tianjin City while large patches occupied a large proportion of the total area of green space.Green spaces were unbalanced in distribution and unreasonable in structure.It suggested adjusting the structure of urban green space,reducing the degree of landscape fragmentation,strengthening the construction of large and mid-sized green patches,so as to improve ecological function of green space.

Pattern Change of Urban Green Space in Beijing from 2000 to 2010

With the rapid urbanization in Beijing, the vegetated surfaces have been increasingly replaced by impervious built surfaces. A clear recognition on the changes in green spaces pattern is vital for urban administrators and planners to optimize the urban development areas and define the ecological protection red lines. Based on the SPOT images and field investigation data of urban green spaces within the sixth ring road of Beijing in 2000, 2005 and 2010, the study investigated the dynamic changes of urban green spaces in this area, by means of GIS techniques and landscape ecology methods. The results indicated that green spaces in Beijing have decreased by 207 km2 from 2000 to 2010 at the expense of agricultural lands and waters. Although there has been some increases in urban forests and grasslands, it cannot compensate the rapid decrease of urban green spaces. The land cover types conversion occurred mainly in the areas between the fifth and sixth ring roads while the zones encircled by the fourth ring road had a little change. In addition, landscape metrics such as number of patches(NP) and shape index(SHAPE) increased, but the mean nearest-neighbor distance(MNN), aggregation index(AI) and patch cohesion index(COHESION) decreased during the period of 2000-2010. Also green landscapes became considerably isolated and fragmented. The study disclosed the obvious changes of green space size, composition and layout in urban districts of Beijing City from 2000 to 2010, and highlighted that construction of urban green space should consider not only the geometric or aesthetic effect, but also the increase of vertical green volume and optimization of spatial layout to fully develop the ecological service functions of green spaces.

Space-time Dynamics of Dendroctonus valens Population in China and Spatial Sampling Technique based on Its Spatial Distribution Pattern

Red turpentine beetle （RTB）, Dendroctongs valens LeConte, is a destructive forest invasive species in China, it mainly attacks Pings tabuliformis and P. bungeana. So far it has spread rapidly to the provinces of Shanxi, Hebei, Henan, Shanxi and Beijing since its first outbreak in Shanxi Province in 1998, and has caused extensive tree mortality. Space-time dynamics of D. valens population and spatial sampling technique based on its spatial distribution pattern were ana- lyzed using geostatistical methods in the pure P. tabuliforis forests and mixedwood stands which were at different damage levels. According to the spatial distribu- tion of D. valeas population, the specific spatial sampling technique was also studied, and then was compared with traditional sampling technique. The spatial sam- piing technique combined with sampling theory and the biological characteristics of D. valens population, which not only could calcnlate the error of the sampling, but also could discuss the optimal sampling number and the optimum size of plot according to different damage levels and different stand types. This helps to explain population expansion and colonization mechanism of D. valens, and to provide a good reference for adopting snitable control measures.

Beam Pattern Scanning (BPS) versus Space-Time Block Coding (STBC) and Space-Time Trellis Coding (STTC)

In this paper, Beam Pattern Scanning (BPS), a transmit diversity technique, is compared with two well known transmit diversity techniques, space-time block coding (STBC) and space-time trellis coding (STTC). In BPS (also called beam pattern oscillation), controlled time varying weight vectors are applied to the antenna array elements mounted at the base station (BS). This creates a small movement in the antenna array pattern directed toward the desired user. In rich scattering environments, this small beam pattern movement creates an artificial fast fading channel. The receiver is designed to exploit time diversity benefits of the fast fading channel. Via the application of simple combining techniques, BPS improves the probability-of-error performance and network capacity with minimal cost and complexity. In this work, to highlight the potential of the BPS, we compare BPS and Space-Time Coding (i.e., STBC and STTC) schemes. The comparisons are in terms of their complexity, system physical dimension, network capacity, probability-of-error performance, and spectrum efficiency. It is shown that BPS leads to higher network capacity and performance with a smaller antenna dimension and complexity with minimal loss in spectrum efficiency. This identifies BPS as a promising scheme for future wireless communications with smart antennas.

基于Cite Space分析建筑模式语言发展趋势

亚历山大模式语言实用性强且应用广泛,研究国内外发展趋势有助于探索国内建筑设计领域差异化发展,促进本土建筑更新。文章利用Cite Space对国外文献进行热点和趋势分析,发现其更注重城市广场、街道和社区的模式研究,具有向宏观尺度发展的趋势;将国内研究脉络划分为初步探索、急速提升和蓬勃发展3个阶段;梳理传统村落、公共空间和图式语言热点领域的研究进展;对比国内外热点和趋势差异,对国内理论应用进行展望。

Analysis of the Green Space System Planning in Small Towns with Yifeng Township, Yancheng City as an Example

Taking the green space systems in Yifeng Township for an example, this paper analyzed the characteristics and planning principles of green space system in small towns under the background of rapid urbanization. It also proposed the construction of stable ecological green space pattern of towns, the development of forest-type green space and the planning ideas of green space system in small towns that can embody regional context and implement multifunctional composite.

DISTRIBUTION PATTERNS OF LEAF AREA INDEX FOR MAJOR CONIFEROUS FOREST TYPES IN CHINA

Leaf area index (LAI) of natural vegetation is recognized as the most important variable for measuring vegetation structure over large areas, and for relating it to energy and mass exchange, which has been successfully estimated from satellite resolution sensors. In this paper, according to the statistical analysis based on a lot of forest plots, the mathematical models of LAI distribution patterns in the hydro thermal spaces for five coniferous forest types in China were established. For the cold temperate larch forests growing in the dry and cold climate, their LAI increases with the increasing of warm index and precipitation in the way of hyperbolic quadratic surface. For the cold temperate spruce fir forests and temperate Pinus tabulaeformis forests, their LAI is negatively related to the annual mean air temperature in the way of the natural exponential curve, in order to adapt to the water oppressed environments. For the subtropical Pinus massoniana forests and Cunninghamia lanceolata forests growing in the warm and moist climate, their LAI is related to the annual mean air temperature in the way of the parabolic quadratic curve.

1984–2023年苏州高新区景观格局演变及景观生态风险评估

以苏州高新区为研究对象,通过解译Landsat系列遥感影像建立研究区土地利用数据,分析1984–2023年研究区景观格局演变过程,并构建50 m×50 m的风险小区,利用景观格局指数法对其景观生态风险进行评估。结果表明:近40年间苏州高新区景观格局发生了显著变化,主要表现为耕地向建设用地的转变和建设用地自东南向西北、从伴山到临湖的阶梯扩张,而水网格局和水域面积保持稳定,禁开禁采之后城市山林面积也在稳定恢复提高。在这一过程中,研究区平均景观生态风险值呈现出“提升—下降—回升”的趋势,不同时期景观格局的异质性使得景观生态风险分布差异明显,较大影响区域高值区景观生态风险的因素在这一过程中也发生转变,自发城镇化发展阶段高值区主导因素为景观脆弱度,快速城镇化发展阶段主导因素为景观破碎化,区域优化及高质量发展阶段主导因素为景观优势度。了解苏州高新区生态变化过程,识别提取长期处于高值风险的生态薄弱区,并基于研究结果提出区域发展建议,以期推动苏州高新区可持续发展,并为理解快速城市化进程中生态环境变化提供实证依据。

Narrative Patterns Research in O·Henry's Novels

O·Henry is living in the time when novelists are in the great pursuit of narrative pattern research. Hence his works is inevitably influenced. Beside his humorous language, surprising ends and expressions, O·Henry's novels in my opinion is also marvelous for his outstanding narrative patterns arrangement. In this article, a research will be conducted onto his narrative pattern in the aspects of narrative perspectives, narrative space and narrative time. By this research, more information and references is intended to obtain for the further study on this area.

Characterizing Fracture Spatial Patterns by Using Semivariograms

Semivariogram is applied to fracture data obtained from detailed scanlinesurveys of nine field sites in western New York, USA in order to investigate the spatial patterns ofnatural fractures. The length of the scanline is up to 36 m. How both fracture spacing and fracturelength vary with distance is determined through semivariogram calculations. In this study, theauthors developed a FORTRAN program to resample the fracture data from the scanline survey. Bycalculating experimental semivariogram, the authors found five different types of spatial patternsthat can be described by linear, spherical, reversed spherical, polynomial I (for aO) models, of which the last three arc newly proposed in this study. Thewell-structured semivariograms of fracture spacing and length indicate that both the location of thefractures and the length distribution within their structure domains are not random. The results ofthis study also suggest that semivariograms can provide useful information in terms of spatialcorrelation distance for fracture location and fracture length. These semivariograms can also beutilized to design more efficient sampling schemes for further surveys. as well as to define thelimits of highly probable extrapolation of a structure domain.

Construction of Spatial Pattern of Garden Plant Landscape in Urban Waterfront

The spatial pattern of urban waterfront landscape is an important factor affecting the quality of urban culture and improving the recognition of the city.As the core material of urban landscape design,garden plants play a very important role in the construction of spatial pattern of urban waterfront landscape.The spatial pattern of garden plant landscape can be divided into three types:two-dimensional,vertical and special.The two-dimensional spatial pattern focuses on the construction of"meaning and form".The vertical spatial pattern focuses on the construction of"image".The special spatial pattern of garden plants focuses on the construction of"artistic conception".The three types are used to create a spatial pattern of urban waterfront landscape with rich spatial and temporal changes and artistic connotation.

Spatial Composition Patterns of Modern Medical-Elderly Care Buildings

As China is stepping into aging society, medical-elderly care buildings as an emerging type of building have begun to attract the attention of the architectural design industry. Starting from the composition pattern of architectural space, this paper analyzed the attributes of the convalescent space, physiotherapy space, medical space, and public space so as to explore appropriate design patterns, with a view to contributing to the research on medical-elderly care buildings.

Evolution of Waterfront Landscape Pattern Under Rapid Urbanization: A Case Study of Xuhui Riverside Zone in Shanghai

The urban waterfront area is in a special land-water communication zone and is an ecologically sensitive zone. It combines the characteristics of natural landscape and human landscape intertwined. The urbanization process continues to affect the natural and cultural environment of the waterfront, and environmental issues have become increasingly prominent. Taking Xuhui Riverside Zone as an example, this paper analyses the dynamic evolution process of the landscape, aiming at revealing the impact of the evolution of landscape pattern on urban ecological environment during the process of urbanization in China, so as to provide useful references for the planning and design of the waterfront space landscape of domestic and foreign cities.

优化国土空间发展格局视域下推进城市群一体化发展的空间逻辑

城市群是推动新型城镇化的主体形态和促进发展要素合理流动的空间载体,在支撑国民经济社会发展和提升国际竞争力方面发挥关键作用。优化国土空间发展格局蕴含引导要素优化配置的目标指向、提升空间结构韧性的实质内容、加快构建新发展格局的时代背景,为考察城市群一体化发展的空间逻辑提供有益视角。从宏观顶层设计、中观权力运作、微观主体行动来看,优化国土空间发展格局中的城市群一体化发展,涉及空间规划与发展规划协同引领、空间尺度与权力结构的动态适配、核心城市与重要主体的辐射带动。根据优化国土空间发展格局的价值导向与功能预期,新时期健全城市群一体化发展机制应规范完善空间规划程序、优化升级空间治理体系、渐进实现空间正义,逐步形成优势互补、均衡发展的城市群布局与国土空间体系。

运动公平视角下寒地城市绿地格局特征及优化研究--以哈尔滨为例

快速城镇化背景下慢性疾病频发,绿地作为公众运动健身重要场所在提高公共健康水平方面发挥着重要意义。寒地冬季漫长,严寒气候极大程度限制了居民的户外运动,特别是工业属性较强的老城区,绿地格局先天劣势,加剧了运动不公平现象。基于运动公平视角,构建寒地城市绿地格局供需指标体系,评估绿地耦合协调发展水平;并利用基尼系数与人均绿地面积区位熵探寻季节分异下的绿地格局公平性。结果表明:(1)寒地城市绿地运动供需空间严重失衡,绿地格局耦合协调度较差,运动公平性差距悬殊,总体呈现西北好,东南差的分异特征;(2)西北部为原发展核心,绿地等基础设施建设完备;随着城市扩张,东南部成为新发展核心,但依旧以工业为导向,绿地建设不足,导致绿地分布极端,空间分异明显;(3)季节分异对运动公平产生不同结果,严寒气候增加了绿地可达的阻力,不平等性随着气温的下降而增加;由于缺少公共绿地,东南部在冬季面临更加严重的不公平现象。基于对关键指标的优化测算,优化更新寒地城市绿地格局,为落地环境干预健康的“健康中国”国家战略提供理论与实践参考。

基于“三生”空间的湖南省土地利用格局及多功能演变

为了增强土地的多功能性,缓解土地资源紧张和功能性较弱等问题。该研究基于“三生”空间视角,通过“要素-结构-空间-功能”的土地利用多功能机制,构建多功能评价指标体系,采用熵值法和TOPSIS法对其土地利用多功能水平进行评价。同时借助ArcGIS软件,采用土地利用空间转移模型、土地利用动态度等空间分析方法对该区域2000—2020年土地利用格局演变特征进行分析。最后基于“空间+功能”的双视角探析土地利用空间格局演变与功能转变之间的动态关系。结果表明:1)2000—2020年湖南省土地利用“三生”空间格局演变波动较大,生产空间与生态空间收缩,生活空间扩张;其中又以生活空间扩张显著,生产空间与生态空间之间转换较为频繁为主要特点,是造成湖南省土地利用“三生”空间波动重组的主要因素。2)区域分布格局,生产空间主要分布于省北部的常德、益阳、岳阳以及中部衡阳、娄底、邵阳、永州4市交界的中心区域;生活空间主要分布于以长株潭城市群为中心的核心分布区以及各市城市中心区域;生态空间分布面积最广,主要分布于省西部及西南部丘陵山地区域,以及位于省北部的洞庭湖水域区等;区域变化以环长株潭区域土地利用格局演变更剧烈,其次是东、西、南三面山地区域;动态度结果显示全省土地利用总体动态变化率有提升态势。3)2000—2020年土地利用“三生”功能水平呈现逐年递增趋势,生态功能评分最高,变化最明显,生产功能次之,波动中水平趋于稳定,生活功能最低,呈逐年提升趋势;区域间水平差异由低水平高差距向高水平的相对均衡转变。4)土地利用空间格局变化与功能转变之间具有较大的关联性,尤其在时序变化上呈现一定的变化规律,最后基于“空间+功能”的土地利用多功能机制,对两者关系进行了一次有益尝试。在“一对多”机制关系研究中,未来需要结合土地多功能测度方法更加准确识别“三生”空间和功能之间的相互关系。

An Intelligent Single Adaptive Neuron Controller Based on Pattern Recognition

The trajectory of the controlled system in phase space has been investigated, and different learning methods are applied to the single adaptive neuron controller according to the pattem of the control system. The advantage of the controller presented has been shown by simulation of a satellite attitude stability control system.

The Influence of Surrounding Ground Floor Facilities on the Use of Privately Owned Public Spaces in Seoul

Seoul’s privately owned public space (POPS) initiative has achieved quantitative success since its introduction in the early 1990s. However, POPSs have been frequently criticized for failing to correspond with the urban context in which they are created and are thus often underused. Association between surrounding urban context and the use of POPS is acknowledged, but specific elements of the urban context associated with the use of POPS and the extent of association are unclear. In this study, the relationship between constituent elements of 48 POPSs including the surrounding ground floor facility use and the use of those spaces in Seoul’s central business district was measured by multiple regression analysis. The results present empirical evidence of a substantial relationship between assembly, mercantile, and business facilities on ground floors of surrounding buildings and the use of POPS. As the surrounding ground floor facility use showed an overriding relationship with the use of POPS that possibly overshadowed the influence of secondary determinants, the 48 POPSs were divided into two groups: those surrounded by commercial facilities and those surrounded by business facilities. The use of POPSs surrounded by commercial facilities was associated with additional variables including the proximity to transit stations and crosswalks. Models using the sample of POPSs surrounded by business facilities were not statistically significant. Based on these results, this paper emphasizes the importance of creating POPSs in connection with desirable surrounding facilities. This study also suggests that anticipation of the usage patterns of POPSs and establishment of guidelines supporting those patterns may be viable by investigating preexisting urban contexts.

图式语言视角下传统村落公共空间特征解构与景观修复研究——以坪坦村为例

传统村落公共空间是中国传统农业社会物质文化与非物质文化的重要载体.在乡村振兴、城乡一体化背景下,解构传统村落公共空间特征、修复传统村落公共空间景观对传统村落保护具有重要意义.该文采用了文本分析法、参与式观察法等,结合了图式语言理论,以坪坦村为例构建传统村落公共空间图式语言体系,对公共空间特征进行解构,提出景观修复策略.研究表明:1)以图式语言理论为基础,构建坪坦村公共空间图式语言体系.通过解构分析坪坦村公共空间构成要素得出了75种图式语汇,解构公共空间秩序法则得出了相邻、相交等词法与秩序性、时间性和本土性等句法,解构公共空间生长环境得出了自然、社会和文化语境.2)坪坦村公共空间表现出特征极为突出的侗族特色:公共空间布局中自然环境与传统建筑情景交融;生产、生活与精神公共空间场所互动共生;公共空间节点多维嵌套,层次丰富.3)图式语言视角下的传统村落公共空间景观修复路径:按“字—词—词组”层层递进织补空间元素;按“时间—空间—情感”循序渐进构建空间秩序;按“完善—修缮—重构”滚动式表达空间意境.研究通过对传统村落公共空间的图式解析和特征解构,为传统村落公共空间的景观修复提供新思路、新方法.