新时期中国农村土地综合整治逻辑体系框架

在问题剖析和内涵辨析的基础上,从5个方面构建了农村土地综合整治逻辑体系框架。研究认为,新时期农村土地综合整治在指导理念上应以"理-工-管"等多学科交叉融合的基本理念为指导;在目标定位上应形成包含"现实目标、基本目标、中级目标、战略目标"的层次化目标体系;在宏观战略上应明确今后一段时期内综合整治的战略重点与方向;在统筹安排整治项目方面可按照"战略区-类型区-潜力区-项目区"的空间层次逻辑思路,从国家、区域、亚区、项目4个层级构建综合整治项目空间层级体系;在功能作用方面,可通过土地整治、空间重构、要素整合与机制创新来推进乡村转型发展和城乡一体化进程。     

Palaeogeographical reconstructions of Lake Maliq (Korça Basin,Albania) between 14,000 BP and 2000 BP

Since the early 1990s, excavations of a protohistoric lakeside settlement in the Korça basin carried out by a French–Albanian archaeological team have induced geomorphological and palynological studies about the sedimentary records of Lake Maliq. These studies allow us to distinguish a series of centennial-scale high and low lake level events between 4200 and 4000 cal BP (2899–2637 BC/2843–2416 BC) and 2600 cal BP (822–671 BC), probably due to large-scale climate changes (in the Mediterranean basin). In addition, the sediment sequence also gives evidence of a millennial-scale trend of lake level rise. It appears to be an interplay between lake level rises and falls against tectonic subsidence of the basin allowing accommodation space for sediment deposition.The variations of the lake's level and the lake's surface area influenced the development and the abandonment of the nearby lakeside settlements (like the tell of Sovjan). In order to prepare an archaeological survey around the now dried up lake, we made a 3D model of the Holocene deposit from the lake including these lake level results, geomorphological mapping, excavation data, numerous core logs, AMS ¹⁴C dating and SRTM DEM data. The GIS model allowed us to propose four palaeogeographical reconstructions of the extension of Lake Maliq: around 14,000 BP, during the Mesolithic (around 9000 BP – 8781–8542 BC), the Early/Middle Bronze Age transition (around 3800 BP – 2310–2042 BC) and the Iron Age (2600 BP – 822–671 BC). A map of the thickness of the sediments above potential archaeological layers is also proposed.     

Investigating self-reported food allergy prevalence in Waterloo Region,Canada

While food allergy prevalence has been studied at the national level, we know little of food allergy prevalence or perceptions of prevalence/management at the local level. This paper uses Waterloo Region as a case study to 1) document self-reported individual and household food allergy and sensitivity prevalence at the local level; 2) investigate perceptions of food allergy prevalence; and 3) explore perceived confidence in anaphylaxis management. Survey data were collected from January to March 2019. Respondents (n = 500) self-reported individual and household food allergy and sensitivity, estimated the percentage of Canadians with food allergy, and were queried about their knowledge of food allergy management. Prevalence estimates were weighted to the structure of the 2016 Canadian Census, and univariate and bivariate analysis were conducted. Prevalence of self-reported food allergy was 12.1% (95%CI, 8.8%-15.3%), and prevalence of self-reported food sensitivity was 26.3% (95%CI, 21.9%-30.7%). When asked to estimate the percentage of Canadians with food allergy, the mean perceived percentage was 35.1% (SD = 22.96). Self-reported prevalence of food allergy appears higher in Waterloo Region, and the estimated percentage of Canadians with food allergy is inflated. Understanding prevalence and perceptions at the local level is important for targeted allocation of public health resources to ensure safe spaces for individuals with food allergy.     

Holocene Elevated Sea Levels on the North Coast of Vietnam

We present evidence of elevated Holocene sea levels on the north coast of Vietnam, comprising radiocarbon dating of raised coastal geomorphological and palaeobiological features at localities on the margins of the Bac Bo (Red River) Plain. This evidence indicates that by ca. 5500 cal yr B.P. mid‐tide lay approximately 5.4 m above national datum, that is 3.25 m above present local mid‐tide. By c. 3500 cal yr B.P., sea level was lowering and, by ca. 2000 cal yr B.P., mid‐tide lay at or above 1.5 m above present local mid‐tide. It is not yet possible to infer patterns of sea‐level fluctuation other than an overall lowering of elevation, although the separation of the raised and modern erosion notches does suggest two dominant mid to late Holocene periods of erosion — probably periods of sea‐level still‐stand or relatively slow sea‐level change. The intervening period of relatively rapid sea‐level change and associated reduced erosion probably dates to after ca. 2000 cal yr B.P..     

中国城乡居民国内旅游消费水平和消费结构比较研究

国内旅游一直是中国旅游的主要构成部分,对拉动内需、促进全国经济增长的作用日益凸显,因此,研究中国国内旅游消费意义重大。本文依据2001-2008年《中国旅游统计年鉴》和《中国国内旅游抽样调查资料》,比较分析了中国城乡居民的国内旅游消费水平和消费结构,发现两者之间存在诸多差异,并对其原因进行了分析。在此基础上,提出了中国城乡居民国内旅游消费水平提升和消费结构优化的路径:提高城乡居民可自由支配收入、合理制定景区门票价格、优化旅游产品结构、加强旅游消费引导。     

PETROGRAPHIC AND GEOCHEMICAL EVIDENCE FOR LONG‐STANDING SUPPLY OF RAW MATERIALS IN NEOLITHIC POTTERY (MENDANDIA SITE,SPAIN)

Pottery from the Neolithic Mendandia site has been studied. The radiocarbon dating of the site corresponds to a range of dates from 7488–7546 cal bc to 5283–5437 cal bc : the first occurrence of pottery is dated at 5968–6040 cal bc for the lower level III, and up to 5386–5560 cal bc for level II. The antiquity of the potsherds places them within the oldest pottery production sequences in the Iberian Peninsula, which adds to the interest of this study. Ten potsherds from level II and five from level III are analysed for their petrographic and chemical characterization. The petrographic data show two different methods of raw materials manufacture—intentionally tempered pottery (ITP), using calcite and/or limestone and grog, and naturally or non‐intentionally tempered pottery (NTP). According to the matrix paste features, on the basis of the amount, shape, and average or size range of the mineral inclusions, clayed (type A) and sandy (type B) paste types were established and related to two different source areas. The chemical features also indicate two raw material sources and are in agreement with the petrographic paste types. The absence of significant chemical and mineralogical differences between the pottery from levels II and III suggests two contrasting areas for raw materials supply that lasted for at least 600 years.     

Do Voluntary Programs Reduce Pollution? Examining ISO 14001's Effectiveness across Countries

Voluntary environmental programs have emerged as important instruments of environmental policy. Despite considerable scholarly scrutiny, there remain debates about whether they reduce pollution among participants, and their overall impact at the country level. We present a cross‐national analysis of the efficacy of ISO 14001, the most widely adopted voluntary environmental program in the world. While several single country studies have explored the effect of ISO 14001 participation on pollution reduction at the facility level, this is the first article to assess (i) national level pollution reduction effects of ISO 14001 participation levels, (ii) across a large number of countries, and (iii) across two pollutants. We examine whether all else equal, the national level uptakes of ISO 14001 are associated with reductions in air emissions (sulfur dioxide, SO₂) and water pollution (biochemical oxygen demand, BOD). Because firms, regulators, and environmental groups tend to focus more on visible types of pollution than less visible ones, we hypothesize that ISO 14001 uptake will be associated with more pronounced reductions in air pollution (visible) in relation to water pollution (less visible). Our analyses of pollution levels for a panel of 138 (72 for BOD) countries for the 1991–2005 period suggest that a 1 percent increase in aggregate levels of ISO 14001 adoption is associated with about a 0.064 percent reduction in SO₂ emissions, all else equal. In contrast, we do not find a statistically significant relationship between ISO 14001 adoption levels and changes in water pollution (BOD).     

基于全局主成分分析的我国省级行政区城市化水平综合评价

根据城市化的内涵,选取13个指标,以1995年、2000年和2005年3个年份全国31个省级行政区为评价对象,构成城市化综合评价立体时序数据表;采用全局主成分分析方法,对其城市化发展水平进行综合定量评价。共提取三个主成分,分别反映人口结构及城市景观变化、城镇居民收入及消费水平、城市基础设施建设方面的信息。分析结果表明,我国城市化发展质量和速度的区域差异明显;在分析期内,城市化发展的总体质量有所提高;城市内部主要指标之间的协调性较好。     

Back from burn out: are experimentally charred grapevine pips too distorted to be characterized using morphometrics?

This article examines the impact of charring on the possibility to characterize grape pips, at compartment (wild versus domesticated) and cultivar level, using morphometrics. Two morphometric methods have been used, one based on linear measurements (traditional morphometrics) and one on elliptic Fourier transforms (EFT; morphogeometrics). Charring experiments were performed using a laboratory muffle furnace and various charring conditions. Despite the strong impact of heating, results showed that wild and domesticated Vitis seeds can be reliably discriminated using both traditional morphometrics and morphogeometrics, even when charring has been done at high temperature (450 °C). The characterization of charred pips at cultivar level using EFT is very powerful when the seeds are charred at 250 °C, but the risk of misclassification is, as expected, higher at 450 °C. Results suggest that the characterization at cultivar level should only be attempted with large assemblages of well preserved archaeological pips, and only after a first classification at compartment level. Our approach was applied on a case study of two assemblages of waterlogged and well preserved charred pips from the archaeological site of Lattara. The results are consistent both between the two morphometric methods and between waterlogged and charred remains.     

Effect of mollusc eating on human bone strontium levels

Empirical aspects of the movement of strontium through the food chain suggest that the level of bone strontium can be used as an indicator of the percentage of meat in human diet. In general, skeletal remains from agricultural peoples are expected to have high bone strontium levels relative to hunter-gatherers from the same geographical region because plants contain relatively higher amounts of strontium when compared with animal products. The results of the study described in this paper, however, indicate that the inclusion of molluscs as a component of the diet may produce the opposite of the expected strontium values. Burials from an Archaic (c. 2500 BC) hunting-gathering population excavated from Lu^o25, an archaeological site in northern Alabama, USA, exhibit a mean bone strontium level ( atomic absorption; neutron activation) that is higher than the mean level from an agricultural Mississippian (c. AD 1400) population ( atomic absorption; neutron activation) that was buried at the same site. The samples were analysed by two techniques (atomic absorption spectrometry and neutron activation analysis) and the results compared favourably; therefore, the results can be accepted as valid rather than being due to technique error. We propose that the ingestion of molluscs, whose meat is known to contain large amounts of strontium, has produced this reversal from expected results.     

中国城市群“文—旅—科”产业融合发展水平攀升规律的定量模拟与验证

在城市群的形成发育过程中，伴随着城市群内部文化、旅游、科技产业资源优化再配置和协同集聚效应的共同作用，城市群“文化—旅游—科技”产业融合发展水平表现为随时间序列呈指数式增长的攀升态势。本文通过对城市群“文—旅—科”产业融合发展水平攀升规律的基本原理进行分析，建立相关数理模型得到几何表达式；继而构建城市群“文—旅—科”产业融合发展的评价指标体系，运用引入时间调整系数改进的耦合协调度模型，计算得到中国城市群及所辖城市的产业融合发展水平并进行时空演化分析；最后使用模拟验证的方法对中国城市群“文—旅—科”产业融合发展水平攀升规律进行拟合验证，探究中国城市群的产业融合发展路径。     

Recent Investigations on Holocene Occupations in Northeastern Algeria: The Contribution of Kef en-Naga

The discovery of Kef en-Naga site, an open-air human occupation in northeastern Algeria, was favored by a sandstone quarrying where work truncated much of the archaeological sequence on its cross-section. A multidisciplinary rescue excavation conducted on this site provided, for the first time in the region, the evidence of superimposition of two stratigraphic levels (lower and upper) of sandy clay deposits formed in humid paleoenvironmental conditions. Besides, XRD analysis show that a large amount of hematite (Fe₂O₃) is localized at the lower level of the stratigraphic section, where iron is found in oxide form due to the moisture. As for rock magnetic property characterization analysis, the various magnetic parameters have strong values in the upper level, and the grains are small-sized. However, various magnetic parameters are lower at the lower level and the magnetic grain concentration is reduced. Although the site is lacking faunal and carpological remains, thereby depriving us of reliable dates, the two stratigraphic levels are correlated to the Holocene according to archaeological and paleoenvironmental considerations. The lower level likely corresponding to an early Epipaleolithic culture marked by the production of microliths using a microburin blow technique, while the upper level is related to a subsequent Epipaleolithic phase, characterized by the disappearance of microburin blow technique, the dominance of an industry on flakes and the existence of pressure debitage.     

The Local Implications of Major Job Transformations in the City: A Spatial Microsimulation Approach

The changing dynamics of regional and local labor markets during the last decades have led to an increasing labor market segmentation and socioeconomic polarization and to a rise of income inequalities at the regional, urban, and intraurban level. These problems call for effective social and local labor market policies. However, there is also a growing need for methods and techniques capable of efficiently estimating the likely impact of social and economic change at the local level. For example, the common methodologies for estimating the impacts of large firm openings or closures operate at the regional level. The best of these models disaggregate the region to the city (Armstrong 1993; Batey and Madden 1983). This paper demonstrates how spatial microsimulation modeling techniques can be used for local labor market analysis and policy evaluation to assess these impacts (and their multiplier effects) at the local level‐to measure the effects on individuals and their neighborhood services. First, we review these traditional macroscale and mesoscale regional modeling approaches to urban and regional policy analysis and we illustrate their merits and limitations. Then, we examine the potential of spatial microsimulation modeling to create a new framework for the formulation, analysis and evaluation of social and local labor market policies at the individual or household level. Outputs from a local labor market microsimulation model for Leeds are presented. We show how first it is possible to investigate the interdependencies between individual's or households labor market attributes at the microscale and to model their accessibilities to job opportunities in different localities. From this base we show how detailed what‐if microspatial analysis can be performed to estimate the impact of major changes in the local labor market through job losses or gains, including local multiplier effects.     

ESR Dating of Micoquian Industry and Neanderthal Remains at K?lna Cave, Czech Republic

Electron spin resonance (ESR) and mass spectrometric U-series dating has been carried out on teeth recovered from K?lna cave during the excavations of 1961–76. Linear and early uptake (LU and EU) age estimates are similar due to low internal U content of the teeth. In general, ESR ages decrease upward in the section, but teeth from stone-rich (“lumpy”) layers give anomalously young ages, due to uneven dose-rate distribution. Elephant molars also give anomalously low ages, apparently due to self-absorption of gamma dose. Disregarding anomalous data, earliest appearance of Micoquian lithics and last occurrence ofDicerorhinus kirchbergensisin layer 9b is dated to 69±8 ka, which places them near the oxygen isotope stage (OIS) 5a/4 boundary. Neanderthal remains and the latest occurrence of Micoquian lithics in level 7a are dated to 50±5 ka, in good agreement with an uncalibrated radiocarbon date for this level of about 45 ka. The interstadial character of the fauna of this level also agrees with its date which places it in OIS 3. We also report that three stadial/interstadial cycles recognized in the lithological, faunal and palynological record of levels 9b through 7a at Kölna occurred during the timespan from about 70 to 50 ka.     

The Subject and Structure of Geosystems Theory

A logical model of the system of disciplines generally known as physical geography distinguishes three subjects of study, each associated with a particular level of organization of the basic study object, namely the earth's physical landscape envelope or landscape shell and its subsystems (individual landscapes or geocomplexes): (1) study of the componental level of organization would be the subject of the particular disciplines in physical geography (geomorphology, climatology, etc.); (2) study of the integrated level of organization would be the subject of landscape science, which is viewed as a synthesis of the particular disciplines; (3) study of the earth's natural environment at the level of the entire landscape envelope would be the subject of general physical geography or general earth science. The subject matter of the particular disciplines and of the synthesized landscape science is further broken down into research areas: regional research (concerned with geographical spaces); typological research (quasi-geographical spaces) and general research (nongeographical).     

中国制造业重心的空间分布变化特征与趋势研究——基于2001年和2009年数据的实证分析

中国东部地区向中国内陆及周边国家的产业转移方兴未艾,很有可能发展成为全球第四次产业转移浪潮,而制造业的区域转移是该过程的主体。本文对中国制造业不同尺度的份额变化及其影响因素进行讨论并对二者关系进行计量分析,得出以下结论:第一,制造业重心基本空间格局未发生变化,但已发生明显的份额变化;第二,制造业份额变化涉及多个空间层面,并遵循随经济发展水平增长而降低的梯度原则;第三,根据2001年和2009年中国地市级尺度制造业份额变化及其影响要素间关系的理论分析和计量研究结果,中国区域制造业份额与经济发展水平呈现倒U型关系,且仍对低成本劳动力具有一定的依赖性,而交通设施改善对于制造业份额的增长具有显著的正向效应。     

交通网络与城市化水平的线性相关模型

从城市化水平(z)与人均产出(x)的周模型(z=alnx-b)和交通网络连接度(β=c/ν)与人均收入(x)的对数关系模型(β=klnx+φ)出发,导出交通网络与城市化水平的线性相关模型β=Az+ζ,这暗示城市化过程与交通网络的发展互为因果。借助中国城市化水平与铁路里程的时间序列和空间系列数据对理论推导结果进行了实证分析,从而证明:区域城市体系的建设与交通网络的发展应该同步进行。     

Boiled versus unboiled: a study on Neolithic and contemporary human bones

Bones treated at low temperature do not present major modifications although, macroscopically, boiled bones may be distinguished from unboiled ones as they are smoother, lighter and more transparent. Such observations should correspond to textural modifications at a nanometric level and should depend on boiling time. In this study, contemporary human bones, boiled during various time intervals, were characterized using scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD) and nitrogen adsorption (BET). The results were used to estimate the boiling time in four archaeological samples (Neolithic bones from Malalmuerzo cave, Spain). It is concluded, comparing Neolithic bones to contemporary ones and from the textural characterization at a nanometrical level, that two of the archaeological bones were boiled and that they were boiled for less than 6 hours.     

垦区城镇化综合发展水平测度与比较分析——以建三江为例

农垦区聚落系统的形成和发展基于区域开发初期建立起的国营农场体系,农垦区的城镇化不同于普通农区的城镇化,是一种特殊的城镇化类型,有其独特的科学问题和学术价值。本文以三江平原农垦区中心城镇建三江为研究对象,从佳木斯市、鸡西市、七台河市和牡丹江市选取具有代表性的五个普通农区城镇(即富锦、虎林、穆棱、汤原及勃利)作为对比样本,以反映农垦城镇人口、经济、社会和服务功能等多方面特征,构建评价指标体系,基于改进的熵值法测度城镇化综合发展水平。