Conservation Planning of Plant Diversity in Jinghong City of Xishuangbanna

General situation of Jinghong City was introduced in this study.Based on analyzing its vegetation components,species diversity,rare and endangered species,alien species,plant resources,7 biodiversity conservation contents were planned,including focusing on the construction and management of nature reserves,constructing forest park and developing science popularization engineering,establishing the area of banning hunting(picking) wild species and connection corridors,constructing wild elephant park into a zoo,promoting the role of urban parks in protecting biodiversity,devoting more in protecting rare and endangered species,preventing the danger of invasive species.4 countermeasures for applying biodiversity in urban green spaces were proposed,specifically,creating urban garden plant community by simulating natural ones to form urban plant ecosystem,determining species cardinal of urban garden plants to protect and develop species diversity,applying both local and alien plants to create diversified landscapes,introducing,domesticating or culturing new garden plants to enrich the diversity of garden plants.Also 3 countermeasures for protecting biodiversity in urban green spaces were put forward,that is,joint development of rural economy and biodiversity protection around cities,protecting species and comprehensively renovating habitats,fully utilizing ex-situ conservation to protect biodiversity.

Conservation of Jiaohe ancient earthen site in China

Earthen sites, which are mainly made of earth, are cultural heritages with historical, artistic and scientific values. Many extremely valuable earthen sites have been preserved in the arid areas in China. The earthen site of Jiaohe Ancient City is one of the earliest National Protected Important Cultural Heritage Sites. The Jiaohe Ancient City site exhibits all kinds of deteriorations, which can be found in the earthen sites in arid environments in China. Through a case study of the Jiaohe ancient earthen site, we present in this paper the comprehensive conservation technologies, including the mud bricklaying and reparation, wooden rod anchorage, crack grouting, surface potassium silicate （PS） penetration consolidation, and suspended steel beam ceiling, etc. Results of this case study showed that better conservation effects could be achieved by selecting proper PS penetration and crack grouting processes based on the deterioration characteristics of the earthen sites. The technology of mud bricklaying and reparation was also an effective method for preventing the earthen body from collapsing. Compared with traditional conservation technologies, the suspended steel beam ceiling technology could effectively reduce the negative impacts to the original state of the earthen site. As for unstable cliffs, a new method using composite anchor rod of bamboo and steel with massive loose earth was applied. Deformation monitoring and temporary supports were critical and indispensable measures for the safe of site conservation projects. Through years of monitoring and practical operation at the Jiaohe ancient earthen site, deterioration at the site has been effectively controlled.

Fragmental Weight-Conservation Combining Scheme for Statistical Signal Transmissions under Fast Time-Varying Channels

Statistical Signal Transmission(SST)is a technique based on orthogonal frequency-division multiplexing(OFDM)and adopts cyclostationary features,which can transmit extra information without additional bandwidth.However,the more complicated environment in 5G communication systems,especially the fast time-varying scenarios,will dramatically degrade the performance of the SST.In this paper,we propose a fragmental weight-conservation combining(FWCC)scheme for SST,to overcome its performance degradation under fast time-varying channels.The proposed FWCC scheme consists of three phases:1、incise the received OFDM stream into pieces;2、endue different weights for fine and contaminated pieces,respectively;3、combine cyclic autocorrelation function energies of all the pieces;and 4、compute the final feature and demodulate data of SST.Through these procedures above,the detection accuracy of SST will be theoretically refined under fast time-varying channels.Such an inference is confirmed through numerical results in this paper.It is demonstrated that the BER performance of proposed scheme outperforms that of the original scheme both in ideal channel estimation conditions and in imperfect channel estimation conditions.In addition,we also find the experiential optimal weight distribution strategy for the proposed FWCC scheme,which facilitates practical applications.

Signs of Urban Identity in the Cities of Terra d’Otranto:A Contribution to Historical Research and Issues about Conservation Practices

The cities of Terra d’Otranto own a stratified architectural heritage,strongly connected with the local rural resources.From 15th to 19th century important phases of urban development contributed to creating an incisive characterization of many small cities holding precious cultural traces,appreciable in the specific use of construction materials and in the peculiar image of the historic city landscapes.Steeples and church pediments can be identified as signs of urban identity,alongside monumental walls,city gates,fortified buildings and other explicit representations of religious and secular authority.Moreover squares,courtyards and surroundings of undeniable cultural interest form a typical environmental heritage that the communities have enriched with many tangible and intangible values.In regard to the vulnerability of the building heritage,considerations on the broad scope of conservation are more important than ever,especially in relation to the required implementation of knowledge through scientific research and more attentive restoration practices on the architectural heritage of the historic cities.Ultimately,an in-depth study of the urban palimpsest is necessary for the proper identification of the features to safeguard,considering the risk of losing important testimonies for the collective memory.

Assessing the performance of urban heritage conservation projects-influencing factors,aspects and priority weights

Heritage conservation in urban areas involves complex systems often faced with the dilemmas of maintaining the built form's historical character,improving infrastructure,and managing development through stakeholder cooperation.At present,the performance of any conservation project is solely vested in conserving the built fabric.Evaluation tools for urban heritage conservation projects do not have provisions for measuring the subjective value of stakeholders who are part of the heritage setting.This study tries to identify and prioritise the factors that need to be considered when developing a conservation project performance assessment model for an urban heritage conservation project from the perspective of experts that can be further evaluated from the perspective of stakeholders.As these complex systems can be better viewed in the context of developing countries,the case of India is adopted.From a literature review,factors that contribute to the outcome of an urban heritage conservation project were identified and categorised into six aspects:the physical,social,economic,cultural,political,and continuity aspects.Through an expert survey,the factors that constituted each aspect were filtered using the feature selection method of correlation to avoid factors that may seem related.The factors under each aspect were ranked using a weighted average ranking method to identify the most prioritised factors determining the outcome of an urban heritage conservation project.The priority weights of the aspects were calculated using Saaty's analytic hierarchy process.The results show that the cultural aspect was the most important aspect,followed by the continuity aspect.The social and physical aspects were prioritised similarly,followed by the economic and political aspects.This study is distinctive because it identifies the influential factors that can help develop a conservation project performance assessment model for an urban heritage conservation project.

Circularity-based decision-making framework for the integrated conservation of built heritage:the case of the Medina of Tunis

Several factors overlap in making urban heritage conservation vulnerable in terms of long-term sustainability.The purpose of this study is to offer insights into the dynamic role that heritage governance plays in the current sustainability debate.This purpose is achieved by investigating the shift from a‘governing for culture’approach to a‘governing through culture’approach in heritage conservation.Subsequently,a case is built for a circularity-based conservation strategy applicable to the governance of historic cities.Different indicators of the circular governance approach are considered,and useful data are collected in comparative form.The cross-matching relationship between the factors is then evaluated by employing the analytic hierarchy process(AHP)on the collected data.As a test case,the conservation strategy of the Medina of Tunis is presented.For a more general conservation model,case-specific data are acquired.Finally,the same framework is applied to compare the case-dependent and case-independent data to define an integrated conservation framework.The obtained results show that the knowledge and data exchange factor,carries the highest significance.This result translates into heritage-led urban regeneration through knowledge sharing and the effective redistribution of cultural activities in historic city centres.

Formation of the modern scenic city of Hangzhou:towards conservation integrated urban planning,1950s–1990s

From the 1950s to the 1990s,China underwent a significant transformation of its political system and economy,from socialism to rapid development after the reform and opening up.In the 1980s and 1990s,to meet the demand for housing and urban modernization under the rapid growth of cities,almost all Chinese cities underwent large-scale urban construction,transformation and expansion.With this background of rapid advancement,many cities have lost their traditional urban features and characteristics.However,it was during this period that Hangzhou not only restored the historical scenery of West Lake through multiple projects but also explored overall planning of the city and introduced conservation ideas,making West Lake,which was originally located outside the city,part of the city.This period also shaped the contemporary urban characteristics of Hangzhou with traditional landscape features.To explore Hangzhou’s positive experience and determine the critical junctures and influencing factors,this study observed the entire historical process using morphological methods.Based on a summary of the characteristics of each development stage,this study further focuses on the key issue of how conservation ideas are gradually introduced into urban planning and affect the development process.

Between Tangibility and Intangibility——A Review on Conservation Planning and Its Implementation in the Historical City of NanJing

The conservation plan for the famous historical and cultural city of Nanjing was prepared since several yearsago.The plan,being an integral component to enrich comprehensive planning of the city,has been workingeffectively through the planning structure to direct the development of Nanjing.However,upon further analysis,au-thors of this article feel that this plan still has its own deficiences and drawbacks in exploring indepth the city’scultural origin,in selecting the essentials while discarding the dross and in blazing new trails based on the rich legacyof the past.These aspects need to be further investigated and to illustrate these points,two scenic belts are proposedto be included into the conservation plan.

Views on the Discussions on the Issue of City Features

The issue of city features was putforword after the founding of New China(in 1950s).At that time,discussions weremainly related to architectural style andtype in the city.Since the adoption of the reform policyand with the rapid growth of our socialisteconomy,these has been a lot of progress inthe development of cities.Meanwhile。

Construction Features of Small Roadside Parks in Tropical Area——A Case Study of Zhanjiang City

Accessibility and flexibility of small roadside parks make them significant transitional spaces in urban landscape environment. Three representative small parks in Zhanjiang City, a typical tropical city in south China, were selected to analyze their location features, spatial processing, demonstration of regional landscapes and recreational characteristics. It was proposed that construction of small roadside parks in tropical area should put human needs on the priority, present regional features of tropical garden landscapes, and focus on inheritance and innovation of regional cultures.

City Intention and Conservation:What We Learned From Historical Nanjing City Maps

论文通过对南京古代地图分析,发见古人在规划、设计、建造城市时的意图、独特匠心和创造智慧,提出此为历史城市保护中需要延续的,而不仅仅是保护物质本体自身。论文也尝试探讨在南京城墙保护中如何通过保护范围和建控地带的画线,来传承城市意图。进而论文阐述中国古代地图展示的有别于西方的城市意图和保护路径。

市镇型历史文化街区价值特征及保护策略研究

市镇型历史文化街区是传统市镇被现代城市吞并后形成的特殊形态的城市文化遗产。它们既保留着整体性的传统市镇空间结构,又呈现了层层积淀的城市遗产空间形态,具有街区类型的特殊性。文章立足市镇型历史文化街区的价值内涵和整体性遗产特征,探究其时空发展规律及保护问题的发生逻辑,并从市镇空间赓续、街区空间更新、街城空间融合3个方面,提出市镇型历史文化街区的保护策略和方法,以期为此类街区的保护传承提供借鉴。

沿江城市降雨特性及雨洪关系分析——以四川泸州市为例

沿江城市气候多变,外洪和内涝之间关系复杂,相互影响、相互制约,洪涝统筹是沿江城市面临的最主要问题。分析掌握沿江城市的暴雨、洪水特征,可提前预测不同降雨条件下河道洪水的特性及其对城区排涝的影响,对于城市防洪系统和排涝系统统筹兼顾、合理规划、洪涝预报预警,都具有重要意义。以四川泸州市为例,对暴雨时空分布特征、洪水特征规律等进行了分析探讨,以期为新形势下沿江城市防洪减灾体系建设提供参考。

水土保持碳汇生态产品价值实现机制及试点设想

水土保持碳汇生态产品价值的实现是“两山”转化的重要途径,也是践行“双碳”目标的重要内容。在界定水土保持碳汇生态产品内涵基础上,论述了基于“主体—要素—运行”多层次框架,构建“多主体协同—多要素投入—全周期运行”的水土保持碳汇生态产品价值实现机制,并以福建省龙岩市为试点示范区,系统梳理其试点基础及必要性,并提出相关的试点策略,以期为龙岩市及类似地区实践提供一定的决策参考。

我国国际消费中心城市发展水平测度及动态演进

国际消费中心城市是消费的高级形态载体。从国际知名度、消费繁荣度、商业活跃度、到达便利度和消费满意度五个维度构建我国国际消费中心城市发展评价指标体系,借助熵权TOPSIS法对其发展水平进行测度,运用核密度估计、收敛性分析、修正的引力模型以及社会网络分析方法,以北京、天津、上海、重庆、广州等25个具有竞争力的城市为样本,剖析我国国际消费中心城市发展的动态演进特征。研究发现,2017—2022年我国国际消费中心城市发展水平逐年上升但处于低水平发展阶段,城市间发展差距大且呈现出梯队层级分布态势;从各维度看,国际知名度、消费繁荣度、商业活跃度和消费满意度四个维度发展水平表现为上升趋势,消费繁荣度涨幅最大,到达便利度发展水平较低;国际消费中心城市间发展的绝对差距较大,但城市的追赶效应使得相对差距缩小;从空间格局看,城市初步形成了北部“北京+天津”集聚圈、南部“广州+深圳”集聚圈以及以上海为首的长江联系带的“两圈一带”总体空间网络格局,表现出“高者全局集聚、低者局部扩散”的集散效应特征,城市间有着“核心城市占据主导,边缘城市结构优化”的非均衡空间联系。因此,应立足城市比较优势、深入挖掘并梯次培育特色消费增长点,完善城市交通基础设施建设、突出重点打造现代综合立体交通网络,积极把握我国国际消费中心城市发展的动态变化过程、多层级优化城市消费资源空间配置,重视我国国际消费中心城市发展的空间网络结构特征,逐步形成以点带面、以圈扩容、结构优化的消费空间发展格局。

人居视角下历史城区公共设施空间保护与更新研究

历史城区具有遗产性和生活性的双重属性,随着“遗产旅游”的兴起和人居环境的老化,历史城区面临生活功能减退的问题,这对遗产的真实性和完整性构成挑战.文章基于“人居视角”,强调历史城区作为遗产社区回归生活性的重要性,强调应关注与居民生活密切相关的公共设施空间,探索更可持续和韧性的历史城区保护与更新方法.以平遥古城教育设施空间作为实证进行研究,文章分析平遥古城不同历史时期公共设施空间的演变特征,探索了人群和教育空间关系的演变动力机制,并提出了针对平遥古城公共设施空间的更新策略,旨在实现历史城区的活态保护和可持续发展.

数字孪生赋能历史文化名城保护与传承研究

从1982年国务院公布第一批国家历史文化名城至今,40多年来我国已经拥有142座国家历史文化名城,其保护与传承的问题一直是政、产、学、研各界探讨的重要议题。在数字中国与文化强国的国家发展战略下,多种技术方法的集成应用促成了数字孪生理念的形成与数字孪生城市的诞生。从价值保护、利用传承、实施路径3个维度梳理历史文化名城保护与传承的需求,并从现实空间、赛博空间、认知空间及其相互作用解析数字孪生的核心理念与技术内涵。在此基础之上,结合实际典型案例实践探索,阐述数字孪生历史文化名城如何赋能其科学保护与传承,旨在促进历史文化名城保护与传承逐步从信息化走向智慧化。

The development and institutional characteristics of China's built heritage conservation legislation

The article reviews comprehensively the emergence and development of China's national legislative system for cultural heritage,with a particular focus on built heritage.It covers the period from the late Qing Dynasty to the present.The antiquity preservation legislation and policies from the late Qing Dynasty to the early Republic of China(ROC)era signify the initial emergence of the state-led legislative system for cultural heritage protection and management.The Interim Regulations on the Conservation and Management of Cultural Heritage,passed in 196o,represent the state's first targeted effort to protect significant historic monuments and sites.The 1982 Cultural Heritage Protection Law(CHPL)established the mechanism for the conservation of Protected Cultural Heritage Sites(PCHS),while the 2008 Regulation on the Conservation of Famous Historic and Cultural Cities,Towns and Villages(RCFHCCTV)defined the principles for the conservation and management of historic cities.China's current jurisdiction for the conservation of cultural heritage is underpinned by legislation such as the CHPL,the Intangible Cultural Heritage Law(ICHL),and the RCFHCCTV.This article analyses the characteristics of the current state legislative system for built heritage conservation and the challenges and constraints regarding urban conservation.It concludes with strategic guidance for improving the legislation for China's built heritage conservation in the present era of rapid economic development and urban regeneration.

Feature Maintenance and Style Restoration of Landscape Heritages

Through reviewing theories and practices of international garden heritages conservation since the 19th century and summarizing experiences of previous studies,feature maintenance and style restoration of landscape heritages were studied,and corresponding protection measures and strategies were put forward.

The City Culture and Regional Feature of Osaka

Introduced is the regional feature and development plan of Osaka in Japan with statistic at figures. The paper makes an analysis of the meaning of regional architecture with balanced consideration of modern technology and social development based on its homeland.