旅游城镇化空间过程及其动力机制研究——重庆市黄水镇案例实证

以重庆市黄水镇为案例,以GIS空间分析方法为基础,研究2004年以来黄水镇旅游城镇化空间过程,并揭示其动力机制。主要结论如下:(1)黄水镇旅游城镇化空间过程经历了传统社区的旅游化功能提升、第二居所为主导的度假功能扩展以及各种休闲组团的综合功能配套三个阶段。(2)土地利用转移的主要方向是住宅用地尤其是第二居所用地。旅游商服用地也加速增长,传统商服用地也有所扩展,在空间上传统商服用地主要沿老街分布,旅游商服用地沿新街集聚。(3)旅游城镇化实质上是游客、政府、社区居民、旅游企业等不同利益主体之间反复博弈的结果。研究也发现,以黄水镇为代表的小城镇旅游城镇化是一种以"就地就近"城镇化为基础,实现"自发自觉"文化保护与传承,通过建立"共建共享"多主体共治体系,形成"外向型"旅游服务业主导的理想化模式。     

Dynamiques hydrogéomorphologiques historiques et actuelles d'une rivière perturbée par les activités de la drave et analyse des impacts d'un démantèlement de barrage

In Quebec, the fluvial dynamics of the Escoumins River have been disturbed by the forestry industry for over a century. Most specifically, a dam was built near the mouth of the river in 1846 and dismantled in 2013. These disturbances had significant repercussions on the equilibrium of the river and Atlantic salmon habitat. This study therefore proposes to characterize the fluvial dynamics of the Escoumins River and to analyze the impacts of the dam dismantling from the perspective of restoring hydrogeomorphological processes and improving Atlantic salmon habitat. The results suggest that the trajectory of the river evolved differently depending on the fluvial style and the grain size composition of each of its homogeneous segments. However, log drive activities in river and dam removal appear to have been the most important controlling factors on the evolution of the stream trajectory. The dismantling notably allowed the restoration of hydrogeomorphological processes and the free movement of salmonids. A better procedure for dam removal and monitoring should be put in place in Canada to encourage this practice.     

“南海Ⅰ号”出水漆器残片的成分结构分析

为了用现代化学分析手段来剖析“南海Ⅰ号”漆器的髹漆工艺,以“南海Ⅰ号”出水的3片不同髹漆工艺的漆片为例,采用显微镜(OM)、X射线衍射仪(XRD)、扫描电子显微镜-能谱仪(SEM-EDS)、傅里叶红外光谱仪(FT-IR)、共聚焦拉曼光谱仪(Raman)等科学测试仪器进行研究,从髹漆的层数、显色材料的成分、漆膜的成分、漆灰的结构和成分、胎体的结构等方面来深度剖析“南海Ⅰ号”出水漆器残片的结构及制作工艺。表面显微观察显示漆片花纹精致美观,细部处理到位;截面显微观察显示剔红样品共有9层,分别是外漆5层,内漆1层,内外漆灰各1层,胎体1层;剔犀样品共7层,分别是外漆3层,内漆1层,内外漆灰各1层,胎体1层;褐漆样品共6层,分别是外漆和内漆各1层,内外漆灰各1层,内漆灰中加杂1层编织物层,胎体1层。拉曼测试结果表明3块漆片中红色显色材料为朱砂(HgS),黄色显色材料为雌黄(As_(2)S_(3)),黑色显色材料为炭黑(C)。样品中内外漆灰成分为羟基磷酸钙[Ca_(5)(PO_(4))_(3)(OH)]、石英(SiO_(2))和水合草酸钙[CaC_(2)O_(4)(H_(2)O)_(2.375)]等常见物质。漆膜的成分是生漆中添加了少量的石英颗粒,没有添加桐油作为助剂。     

唐苏同家族墓出土陶质彩绘天王俑胎体的科学分析

In April 2021, several exquisitely decorated figurines of Heavenly Kings were unearthed from the Tang Dynasty tombs of Su Tong's family in Xianyang, Shanxi Province. However, for each figurine, the outer side was unevenly red and black, and the center and interior of the body black, and the mechanical properties extremely poor (disintegrated by water). To scientifically restore and conserve the polychrome pottery figurines of Heavenly Kings, we carried out scientific analyses of their materials and their firing process. The composition, structure, firing temperature and mechanical properties of the figurine remnants were determined and analyzed using an X-ray fluorescence spectrometer, an X-ray diffractometer, a simultaneous thermal analyzer, a thermal dilatometer, an X - ray photoelectron spectrometer, a universal testing machine and a hardness tester. The experimental results show that 1) the figurines were made of fusible clay containing quartz, albite, calcite, muscovite, clinochlore and other minerals; 2) the figurines were sintered between 300 ~400 °C in an oxidizing atmosphere, the internal sintering degree being lower than that of the external surface and the uneven atmosphere leading to the differences in color among various parts of a figurine ； 3 ) the mechanical strength of the figurines was low, with a flexural strength of about 2 MPa and a hardness of 54 〜71 HD. The study provides a scientific basis for the effective conservation and reasonable preservation of the polychrome pottery figurines of Heavenly Kings and of other similar kinds of cultural relics. © 2023, Sciences of Conservation and Archaeology. All Rights Reserved.     

Gmo Neighbourhoods – Will Co‐Existence Be A Geographically Realistic Possibility?

In Denmark, there has been widespread opposition to the use of genetically modified organisms (GMOs) as a result of which rules have been developed relating to the co‐existence of GM, conventionally and organically produced crops. This has been in the form of a spatially elaborated implementation of the precautionary principle adopted in the Maastricht Treaty from 1992 by the EU. We concretized these rules in relation to actual landscape practices among primary producers of sugar beet in Denmark, and simulated the co‐existence of GM and conventional sugar beet in an area of intensive sugar beet production in Lolland, South Eastern Denmark. The theoretical basis for our work finds three major sources of inspiration; namely Ulrich Beck's theory of the ‘risk society’, Torsten Hägerstrand's concept of ‘the process landscape’ and its relation to the social practices of land users, and Bri‐an Wynne's studies of the discrepancy between theoretical and practical knowledge related to environmental risk. The farmers, who were involved in the study, were interviewed concerning their opinions on land‐use practices in cases of co‐existence. Interviews were carried out both before and after the study took place. It is concluded that although the farmers are positive towards the possibility of introducing GM sugar beet, it is not realistic to expect the rules of co‐existence to be observed, which makes the risk assessment behind the new rules unrealistic. Further studies of social practice in relation to trends and geographical variations in the distribution of structure, size and fragmentation of agricultural holdings are recommended in order to investigate possibilities for realistic co‐existence.     

Investigation and analysis of ancient brick carvings of the Liuhe Pagoda in Hangzhou

The Liuhe Pagoda in Hangzhou, China, has a large number of brick carvings from the Southern Song Dynasty (1152 ce ), covering an area of 464 m². However, the exquisite brick carvings in the Liuhe Pagoda have deteriorated due to natural weathering and a high-humidity environment. Through laboratory analysis and on-site nondestructive testing, the physical and chemical properties of the brick carvings of Liuhe Pagoda were investigated, and the weathering mechanism of the brick carvings was further analyzed. The brick carving of Liuhe Pagoda is composed of brick, white plastering and black coating. CaCO₃ is the main component in white plastering, and the black coating on the top surface contains Chinese lacquer. The weathering products of the brick were analyzed and a trace of CaSO₄.2H₂O was found. In addition, the brick carvings with high water content have low Leeb hardness and severe weathering. Therefore, water and soluble salt are the main factors in weathering of the brick carvings of the Liuhe Pagoda.     

Stochastic process and archaeological mechanism in spatial analysis

Statistical techniques for the study of spatial patterns (“spatial analysis”) are reviewed, and their foundations are examined so that archaeologists can more readily judge how appropriate they are for dealing with particular problems. The concept of “association” is seen as crucial to this question, and some archaeological interpretations of it are critically examined. The potential usefulness of various techniques is discussed. Details of the simpler techniques are given in an Appendix.     

金沙土遗址盐害分布与演化特征

金沙土遗址表面存在泛盐、粉化、空鼓等盐害。对这些盐害的分布特征与演化过程的研究是科学保护金沙土遗址的第一步，也是进一步探讨盐害致病机理的前提条件。本工作收集整理了2010～2020年金沙土遗址病害调查资料，通过现场调查和图像处理技术对盐害的类型、分布特征与演化过程进行定性和定量分析；采用X射线衍射、离子色谱和扫描电镜等测定了不同高度土样的成分、盐分含量以及微观结构。结果显示金沙土遗址主要的盐害类型为表面泛盐、粉化、空鼓、片状剥蚀和掏蚀；主要分布区域是西北向走廊和古河道附近，机挖坑侧壁最为严重；在探方侧壁上盐害由上到下依次由表面泛盐过渡到单独粉化，再到空鼓和片状剥蚀，最底层为掏蚀。金沙土遗址盐害的发育过程可以概括为四个阶段，每个阶段主要发育的盐害类型不同，依次为表面泛盐、粉化、片状剥蚀和掏蚀。越到后期，各类盐害分布范围越大，发展速度越快，对土遗址破坏性越大。离子浓度沿高度的分布与毛细上升作用有关，也与病害的劣化程度和发育进程有关。硫酸钙类是导致土遗址泛盐、粉化和脱落的主要盐分之一。