济南市章丘区乡村传统集市人地空间耦合研究

乡村传统集市作为乡村基础公共服务设施的核心要素之一,是推动城乡融合、人地耦合发展的重要支撑点。以济南市章丘区乡村传统集市为研究对象,在梳理章丘区乡村传统集市人地空间时空脉络的基础上,从集地、集期和集文要素出发构建乡村传统集市人地耦合评价体系,定量解析集市人地空间的耦合特征,提出集地服务体系中心和边缘的等级特征、集期时空布局趋近和分离的高效特征、集文历史遗存封闭与开放的传承特征。根据评价结果,针对章丘区乡村传统集市人地空间存在的矛盾提出了集地空间分布与体系的均衡优化、集期时空协调与交错的高效优化、集文遗产传承与延续的价值优化等空间策略。

国土空间人地关系的概念与内涵辨析

协调人地关系是可持续发展的内在要求,是世界各国空间规划编制与实施监测的重要内容,也是国土空间规划的基础科学问题。本研究解析了开展国土空间人地关系研究的必要性、现实性和紧迫性。基于对人地关系和国土空间的概念认知,提出了国土空间人地关系的概念。基于对国土空间规划业务的解析,从资源供需关系、资源资产赋权关系、开发保护关系、用途管制关系4个维度探讨了国土空间人地关系的内涵。国土空间人地关系既是人地关系地域系统理论的空间体现,又是面向人与自然和谐的人地关系调控的业务场景,国土空间人地关系的概念与内涵为国土空间规划提供了新的理论支撑。

地理课程改革与建设的探讨

我国学校地理课程改革与建设必须解决地理课程的主线，结构，能力价值，表现形式等根本性问题。地理课程应以人地空间关系为主线，协调地理课程各子课程的关系，以充足的内容体现地理课程能力价值，构建递进深化的地理课程表现形式。

Spatial and Temporal Variability of Farm Size in China in Context of Rapid Urbanization

During the last 30 years, China has witnessed rapid economic growth and dramatic urbanization, with about 1.2 x 107 rural people migrating annually into urban areas. Meanwhile, especially since 1995, the rural population has been declining, which is closely linked to land circulation and the increase in farm size in many villages. Increasing scale of farming operations is often regarded as a key to avoiding the abandonment of farmland and to increasing the income of rural farmers. However, until now, there has been little research on the spatial and temporal variability of farm size at the national level in China. Using data from the national agricultural cen- sus and rural household surveys, this study examines the characteristics of land use circulation and the consequent changes in the area of farmland per household. The results show that： 1） 12.2% of rural households were involved in land circulation at the national level. The highest amounts of land circulation have occurred in those provinces where the farmland per capita is more than 0.2 ha or less than 0.1 ha; 2） over 80% of households operate less than 0.6 ha of farmland; 3） the proportion of mid-sized farms （between 0.2 ha and 0.6 ha per household） has decreased while the smallest and the largest farms have increased. This bears some similarity with the phenomenon known as the ＇disappearing middle＇, referring to the changes in farm size. This study establishes a framework for interpreting the factors affecting the changes in farm size in China, which include two promoting factors （urbanization and agriculture） and four hindering fac- tors （agricultual land system, household registration, stable clan system, and farmland loss）.

Temporal Data Mining Using Genetic Algorithm and Neural Network——A Case Study of Air Pollutant Forecasts

This paper integrates genetic algorithm and neura l network techniques to build new temporal predicting analysis tools for geographic information system (GIS). These new GIS tools can be readily applied in a practical and appropriate manner in spatial and temp oral research to patch the gaps in GIS data mining and knowledge discovery functions. The specific achievement here is the integration of related artificial intellig ent technologies into GIS software to establish a conceptual spatial and temporal analysis framework. And, by using this framework to develop an artificial intelligent spatial and tempor al information analyst (ASIA) system which then is fully utilized in the existin g GIS package. This study of air pollutants forecasting provides a geographical practical case to prove the rationalization and justness of the conceptual tempo ral analysis framework.

Commuters＇ and Localists＇ Styles of Socio-Spatial Segregation in Three Types of Arab Communities in Israel

This article examines integration vs. segregation of Arabs in Israel＇s social sphere. Most geo-spatial studies regarding inter-ethnic relations are single dimensional, focusing on residential segregation assuming its association to the social domain. We argue that in the globalizing world daily activity spaces, social networks and influences on everyday life conditions are rooted in growing horizons around residential location weakening the power of residential location to dictate life conditions. Hence we suggest employing a multi-dimensional approach. Specifically, we explore the associations among residential spaces （relating to Arab residents of： purely Arab localities; mixed-Jewish-Arab cities, and Jewish cities）; main activity spaces （commuters to Jewish areas and localists--people staying mostly in the Arab localities） and social integration （social networks; repertoire of identities; attitudes toward integration and knowledge of Hebrew）. The data incorporate tracking the movements of 177 responders for a week （using a GPS logger） and in-depth interviews, which were analyzed quantitatively. Core findings suggest that both residential place and activity spaces affect social integration, however, the locality type has a greater affect. In addition, we identified four integration sorts according to kinds of municipality, activity spaces, and integration measures： （1） segregated localists living in Arab municipalities; （2） commuters living in Arab localities characterized by limited integration; （3） Arabs residing in Jewish cities that succeeded economically but are characterized by limited social integration, and （4） those living in mixed cities which enjoy the highest, yet limited integration level.

China's Land Carrying Capacity Based on Man-grain Relationships

With population growth and increasing pressure on land resources,land carrying capacity(LCC) and food safety have been attracting great attention worldwide.From the point of man-grain relationship and by establishing LCC and land carrying capacity index(LCCI) models,this article firstly analyzes the spatial-temporal dynamics of LCC of China from 1949 to 2005 at county,provincial and national levels.Choosing 2005 as a representative year,this article then evaluates the LCC of 264 pastoral regions(semipastoral regions),663 urban regions and 592 poverty stricken regions of the country.The results show that:(1) from 1949 to 2005,with the increase of grain production,the LCC of China has been improved conspicuously,but due to the rapid population growth,the production can only maintain a low level grain consumption;(2) over the past 25 years(1980-2005),the number of population overloading provinces decreased from 23 to 15 and the mangrain relationship has been improved gradually,but there were more overloading provinces than surplus provinces in China;(3) at county level,there were 1572 overloading counties in 1980 accounting for 68.26% of the total counties of the country and where were 649 million people lived,while in 1990,2000 and 2005,the number of overloading counties were 1066,1133 and 1087 respectively,which shows that the man-grain relationship has been improved obviously during the past 25 years;as for spatial distribution,the surplus counties were mainly concentrated in agriculture developed regions,such as Northeast Plain,North China Plain,middle and lower Reaches of the Yangtze River Plain,and overloading counties were mainly located in regions with poor natural environment and low grain production capacity,such as Northwest China,Tibetan Plateau and Loess Plateau and economically developed urban regions,such as Beijing,Tianjin and Shanghai;(4) animal husbandry improved greatly the LCC of pastoral and semi-pastoral regions,while urban regions were overloading for increasing population pressure and more than half of poverty stricken regions were overloading due to critical natural environment and poor economic conditions.

Remote sensing needs and capabilities in West Africa

The greatest advantage of remote sensing over conventional measurements lies in the opportunity to carry out detailed spatio-temporal analysis of land and ocean features on a very frequent basis. This paper analyses the contribution of satellite imagery to atmospheric, geophysical and ocean studies and management in West Africa since the early 1980s. The detailed application of data from optical sensors (e.g. Meteosat,NOAA/AVHRR, SPOT, Landsat TM, etc.) for weather prediction, hydrogeologicah landuse/cover and cartographic studies has been acknowledged. However, the use of microwave (e.g. SAR) and optical data for ocean monitoring and studies in the sub-region is still very limited. Even though sufficient remote sensing expertise and infrastructure is perceived in the region, no clearly defined networking or database exists.

The Territorial Human-Environment Relationship System:Exploring the Spatial Development of the“Three Spaces”in Mountain Outdoor Tourism Destinations

In the relationship between humans and the environment,all human activities depend on the geographical environment,which serves as the spatial place and material foundation for human life.This study provides a perspective on the human-environment relationship,using a case study of the Dashanbao Mountainous Outdoor Tourism Planning Area in Zhaotong,Yunnan.This study employed methods such as literature review,on-site investigation,and GIS spatial analysis to analyze the functional characteristics of the regional subject,spatial structuring,and spatiotemporally variable ordered processes of Dashanbao as a tourism destination from the perspective of human-environment relationships.The results indicate that under the guidance of the human-environment relationship system philosophy,the construction path of the“ecological space,production space,and living space”includes three main aspects:(1)The formation of five major project blocks and five functional zones to meet the diverse needs of different groups;(2)The establishment of a"multi-core module"structure optimizing the spatial layout of the tourism destination;and(3)With the changes in space and time,the convergence of elements in each block can form a composite mountainous outdoor tourism space with the characteristics of“ecology,life,and production”.The results of this study provide a scientific basis for promoting the sustainable development of tourism regional systems with mountainous characteristics.

China's different spatial patterns of population growth based on the “Hu Line”

The "Hu Line" has been regarded as one of the greatest geographical discoveries in China because it reveals the significant spatial relationship between human activity and natural environment. The spatial evolution of population on both sides of the "Hu Line" has had important implications for both urbanization and regional development and has attracted widespread attention during the dramatic economic and social changes since the implementation of reform and opening-up policy in China in 1978. Using Geographical Information System(GIS) techniques, this paper studied the stability of the "Hu Line" and the spatial patterns of population growth on each side by constructing a spatial database of China's census data from 1982 to 2010. The findings are as follows:(1) In the last 30 years, the "Hu Line" has remained relatively stable, but a new tendency of population change has begun to emerge. The population ratio either side, namely, the southeast half(SEH) and the northwest half(NWH), of the "Hu Line" remains at roughly 94:6(SHE : NWH). Noteworthy, the proportion of population in the SEH of the "Hu Line" has been decreasing slightly, while that in the NWH has been increasing slightly, as the latter has benefited from its higher rate of natural population growth.(2) The spatial patterns of population growth on both sides of the "Hu Line" were quite different. The degree of population concentration in the SEH increased faster than the NWH. Regions with a negative population growth rate have rapidly expanded; these were mainly located in the south of the "Qinling Mountains-Huaihe River belt" and northeastern China. Meanwhile, regions with a fast population growth rate were mainly concentrated in the Yangtze River Delta, the Pearl River Delta, and the Beijing-Tianjin metropolitan area. Thus, the spatial pattern of population growth in the SEH presented a concentration pattern that could be called "Matthew effect pattern".(3) The spatial pattern of population growth in the NWH could be regarded as the "Relative Balance pattern." In the NWH, the population growth rate was positive and the degree of population concentration was very low. There were many minority populations located in the NWH that usually lived in a dispersed pattern but had a higher rate of natural population growth due to the preferential population policy. There were also some regions with a negative rate of population growth in the NWH, which were mainly located close to the "Hu Line" and the Ancient Silk Road.(4) In the future, the spatial patterns of population growth on both sides of the "Hu Line" may continue to evolve. For the SEH, the capacity to attract more people to small and medium-sized cities and towns should be enhanced. For the NWH, the emphasis should be placed on promoting urbanization and enhancing population agglomeration in its major cities.

A random physical model of seismic ground motion field on local engineering site

This paper presents a random physical model of seismic ground motion field on a specific local engineering site.With this model,artificial ground motions which are consistent with realistic records at SMART-1 array on spatial correlation are synthesized.A two-scale modeling method of seismic random field is proposed.In large scale,the seismic ground motion field on bedrock surface is simplified to a two-dimensional spherical wave field based on the seismic point source and homogeneous isotropic media model.In small scale,the seismic ground motion field on the engineering site has a plane waveform.By introducing the physical models of seismic source,path and local site and considering the randomness of the basic physical parameters,the random model of seismic ground motion field is completed in a random functional form.This model is applied to simulation of the acceleration records at SMART-1 array by using the superposition method of wave group.