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1.
Several parts of Binh Phuóc Province, southern Vietnam, suffer from degraded soils and vegetation as a result of both natural erosion of weak mud rocks and sandstones and intensive human activity, especially through land clearing for agriculture on unstable slopes, deforestation, and abandonment of poor farmland. The underlying cause of this land degradation has been the farming habits of migrants of varying ethnic groups who have settled in the area since 1980. The indigenous farming knowledge of these people and the role of that knowledge in soil erosion were examined by a series of household surveys. They enabled farming practices to be related to ground cover established from a 2002 Landsat 7 ETM (Enhanced Thematic Mapper), and erosion data from a series of erosion bridge measurements. A GIS (Geographical Information System) approach was piloted as a means of identifying areas vulnerable to erosion. This could then be combined with the understanding of farming practices to reveal the relative roles of farmer behaviour, crop cover, and slope and soil characteristics in the erosion process. Land use, local people's knowledge and economic realities are the main factors, as well as natural conditions, that drive this land degradation.  相似文献   

2.
Abstract

This article describes the background and reconstruction of the Belgian 1961 census sample file. Recently, a complete codebook for the sample file has been drawn up, and the representativeness of the sample has been evaluated as accurate, except for the loss of cases that occurred for three Belgian subregions. With the addition of the 1961 census sample, cross-sectional microdata from the five successive population censuses since that year, covering a broad range of topics, are now available to the research community. The reconstruction of the 1961 census sample was part of the activities of the HISSTAT project, which is currently being run by a consortium of research institutions in Belgium to bring together cross-sectional aggregated data since 1800, aggregated longitudinal data since 1880, and cross-sectional microdata since 1961, all covering the entire country.  相似文献   

3.
Conducting temporal analysis of census data often requires applying areal interpolation to integrate data that have been spatially aggregated using incompatible zoning systems. This article introduces a method of areal interpolation, target-density weighting (TDW), that is useful for long-term temporal analysis because it requires only readily available historical data and basic geographic information system operations. Then, through regression analysis of a large sample of U.S. census tract data, a model is produced that relates the error in TDW estimates of tract population to four basic properties of tracts. An analysis of model residuals combined with theorized absolute limits on interpolation error yields formulas with which we can compute upper and lower prediction bounds on the population in a tract of one census at the time of a different census. These prediction intervals enable the interpretation of different interpolated estimates with appropriately varying degrees of uncertainty.  相似文献   

4.
5.
URBANIZATION OF THE NIAGARA FRUIT BELT   总被引:1,自引:0,他引:1  
T he N iagara F ruit B elt of Ontario was first delimited in the 1950s on the basis of area in fruit and vegetables as a percentage of area in occupied farmland, using census subdivisions as mapping units (Figure 1).1 The Fruit Belt in 1951 consisted of ten townships on or close to the south shore of Lake Ontario between the western edge of Hamilton and the Niagara River. Even though complete municipal government reorganization and wholesale municipal boundary changes have occurred since 1951, the township names and boundaries shown in Figure 1 are used throughout this paper for the convenience of reference and comparison.  相似文献   

6.
Abstract. The post‐independence censuses in virtually all post‐Soviet states have become contested tools of nation‐building and ethnic entitlements. No state was politically more determined and psychologically more anxious to conduct its population census than Kazakhstan, in which the eponymous Kazakhs did not constitute a majority. The article points at political and identity pressures that made it inevitable that the first post‐Soviet census produce the ‘right’ numbers and officialise the anticipated majority status of Kazakhs in the multiethnic state. By analysing the census data on language, it shows how the state has constructed a politically desirable form of linguistic reality by altering the established category ‘native language’ in the census. This not only offers a compelling rationale for ethnic and linguistic entitlements, but also seeks to demonstrate the ‘success’ of the state's language policy.  相似文献   

7.
One of the key objectives in the rural development program for the Nonchernozem Zone of the RSFSR is the consolidation of rural settlement in larger places. An example of the dispersed settlement pattern is Kaliningrad Oblast, which has a total of 1,527 rural places ranging from fewer than 5 to more than 2,000 inhabitants, with a total rural population of 195,529 (1970 census). The author shows that growth prospects are dependent on a combination of five factors—geographical setting and level of development; population; fixed assets in agriculture; nonfarm fixed assets; availability of services—and, using correlation analysis, identifies 283 places with prospects of future growth, ranging from 32 in the 51–100 size class to one of more than 2,000 population. The preservation of some small rural places is termed inevitable because many serve as outlying settlements for livestock subdivisions of collective and state farms, and dairy and beef cattle represents a characteristic type of farming in Kaliningrad Oblast.  相似文献   

8.
This paper analyzes the extent and nature of age-misreporting in the Mosaic data, currently one of the largest historical census microdata infrastructures for continental Europe. We use demographic measures known as the age heaping indexes to explore regional, periodic and sex-specific patterns of age misreporting across 115 Mosaic regional datafiles, from Catalonia to Moscow, during Europe's demographic ancien régime and thereafter. The paper's second significant contribution is the comparison of Mosaic-based results to those derived from two other big census data projects—IPUMS and NAPP. Beyond this exploratory data analysis, we also investigate possible sources of variation in age heaping across Mosaic data by examining how it relates to variability in socioeconomic, institutional, and environmental conditions. Overall, our systematic inquiry into quality of age reporting in Mosaic consolidates the project's potentially transformative role in comparative historical family demography and suggests some avenues for future research.  相似文献   

9.
This study of livelihood patterns in a single rice village of coastal Guyana from 1887 to the present stresses economic and ecological linkages between the village and nearby sugar cane plantations. In the village of Bush Lot, typically populated by descendants of indentured plantation labourers from India, problems of maintaining drainage and irrigation canals have been compounded by a lack of village labour coordination. Varying yields from the community's ricefields have been affected by recurring drought and flood, so the villagers have never been full-time subsistence farmers. Rather, they have worked seasonally on the nearby plantations to supplement village farming activities. This part-time estate work has tended to inhibit social and political solidarity within Bush Lot. The plantations have coped better with water control than have villages. Nevertheless, the cane estates have depended upon nearby villages for seasonal labour. Although agricultural technology and scale of production have changed dramatically during the psst century, plantations and villages of the Guyanese coastal plain remain closely interlinked.  相似文献   

10.
1928年安徽人口普查研究   总被引:1,自引:0,他引:1  
通过梳理1928年安徽人口普查的背景、制度和执行情况,分析普查数据,可以得知此次人口普查执行得力,普查结果可信度较高。但由于种种原因,此次人口普查所得人口数量与实际人口仍有相当差距。利用以中国土地利用调查为代表的区域性人口抽样调查的结果,通过调整人口性别比可以对1928年安徽人口数量进行大概规模的复原。  相似文献   

11.
The necessity of gender equality in agriculture has been identified as a relevant political issue and incorporated into strategic documents and programmes of the EU. However, until now, not much has been examined about the actual contribution of these policy actions and programmes to the everyday life of farm women; there is a considerable gap in the data about women in farming across Europe, particularly for new member states. The article addresses this issue by focusing on the situation of gender equality on farms in Slovenia. Pertaining to two measures of The Rural Development Programme 2004–2006 – the Setting Up of Young Farmers and the Early Retirement of Farmers – the aim of the analysis is to compare the beneficiaries and non-beneficiaries of these two measures at family farms in terms of their development capacities and their inclination towards gender equality. Results based on the survey data ‘Generations and Gender Relations on Slovenian Farms 2007’ revealed the above-mentioned measures did indeed reach those family farms that showed better development capacities in terms of economic and demographic conditions. However, the farms did not show significant development in terms of gender equality as examined through division of work and decision-making on family farms. The rigidity in gender statuses and roles on family farms is explained and discussed through the issue of unequal access of women to farmland ownership and agricultural education, and through persistently weak institutional support to increase political participation and power for farm women.  相似文献   

12.
The 1831 census database is the newest addition to the series of 19th century Canadian census microdata available for social science research, thanks to a collaboration between the Programme de recherche en démographie historique (PRDH) and FamilySearch. This article presents the work undertaken to prepare this database and the main challenges encountered in the course of this work. While the data extracted from the 1831 census are an invaluable tool for demographic research, particularly on account of the agricultural and industrial questions included in this census, cleaning these data have required particular attention to the age-sex-marital status tallies of the household co-residents. Additional efforts were devoted to integrating missing data for Montréal’s Notre-Dame parish and for other parishes.  相似文献   

13.
This study is based on the 1801 Crop Return for England and Wales, an inquiry which took the form of an arable crops census. Over 75% of the county areas of 12 English and Welsh counties is represented in the surviving Return but under 25% for 13 others. For England and Wales together nearly 50% of the total area is represented. The national distribution of the main grain crops is investigated; and an aggregate analysis of arable England and Wales in 1801 is made. The main result is to produce two different estimates to suggest that arable England and Wales was something over 7 million acres and something under 8 million acres in 1801, the higher estimate comparing very favourably with contemporary ones. Finally, since the Return is extant at parish or township level, it is suggested that it can be subjected to further investigation and to sampling, to break free from the constraints imposed by the county approach by studying or identifying farming regions.  相似文献   

14.
Up until the end of 2018, extreme right-wing parties and their anti-immigration discourse, now a common occurrence in other European countries, had not appeared on the Spanish political scene. However, in December of that year, the Spanish extreme right-wing party VOX reversed this trend and made significant electoral gains in the Andalusian regional elections. This phenomenon has led us to analyse, in this study, the role played by contextual factors (i.e., out-group size, territorial concentration of the immigrant population, demographic change in settlement locations, aggregated educational level and unemployment rate among the receiving society) in the rise in the number of VOX voters. To achieve this, VOX's results from all the polling stations in Andalusia contained in its 5946 census tracts were analysed. At the same time, each census tract was associated with its demographic, economic and educational data, and their relationship was analysed using a multilevel analysis with Mplus. The results show that the presence of economic immigrants is indeed associated with a higher percentage of VOX voters in Andalusia. However, despite this general trend, those census tracts with a high territorial concentration of Maghrebi immigrants are associated with a lower percentage of support for this extreme right-wing party. The opposite is found for Romanian immigrants. Moreover, areas with larger percentages of people with a high level of education influenced greater support for VOX. Thus our findings suggest the traditional explanations for the increased support for extreme right-wing parties in northern Europe do not provide clear patterns that can be extrapolated to Andalusia.  相似文献   

15.
Population censuses have symbolic and instrumental importance for ethnic, national, linguistic or religious groups and their political representatives. This is particularly apparent in deeply divided societies, where political institutions are designed to accommodate groups through forms of power sharing. Existing literature posits that consociational power-sharing institutions, which are commonly employed to manage inter-group conflict, are likely to incentivise contestation and mobilisation in relation to the census, but this claim has not been tested empirically. Employing the case studies of Bosnia and Herzegovina and Northern Ireland, this article tests a proposition about the relationship between consociationalism and the politics of the census: that it is corporate consociational designs that are likely to result in contestation of the census and mobilisation of groups during enumeration, whereas liberal consociational designs will not. The analysis offers support for this proposition, but also suggests that other features of power-sharing settlements, such as the federal nature of the Bosnian state and the majoritarian provision for a ‘border poll’ in the Northern Irish settlement, also play an important role in shaping census politics. These insights contribute to political geographic debates about the census by highlighting the influence of institutional design on struggles over how and where populations get counted, which are applicable beyond the immediate context of deeply divided societies.  相似文献   

16.
We propose a new estimator of spatial autocorrelation of areal incidence or prevalence rates in small areas, such as crime and health indicators, for correcting spatially heterogeneous sampling errors in denominator data. The approach is dubbed the heteroscedasticity‐consistent empirical Bayes (HC‐EB) method. As American Community Survey (ACS) data have been released to the public for small census geographies, small‐area estimates now form the demographic landscape of neighborhoods. Meanwhile, there is growing awareness of the diminished statistical validity of global and local Moran’s I when such small‐area estimates are used in denominator data. Using teen birth rates by census tracts in Mecklenburg County, North Carolina, we present comparisons of conventional and new HC‐EB estimates of Global and Local Moran’s I statistics created on ACS data, along with estimates on ground truth values from the 2010 decennial census. Results show that the new adjustment method dramatically enhances the statistical validity of global and local spatial autocorrelation statistics.  相似文献   

17.
As the twentieth century opened, there were rumours that the cheap land underpinning the dramatic spread of settlement in the previous century might be running out. There were strong motivations, generated particularly by the large body of land seekers with a passion for farming, to hold off the demise of the famous agricultural frontier. Also wedded to the continuation of a frontier were politicians and civil servants across the country. Whether it was a subconscious expectation that the frontier would simply continue or a fear that its disappearance would lead to unpredictable social disturbance, politicians encouraged expansion beyond what was known to be good farmland. The major source of new land, from c . 1910, was the boreal forest. There was a steady accumulation of information about the North that was readily available to government officials but only indirectly to ordinary land seekers. Although the news about farming conditions in the boreal margin was unpromising except for a few pockets, independent and assisted farm settlements continued into the 1930s. The typical two-thirds of farm failure within one generation in most of the new boreal settlements caused a great deal of settler grief and forced reluctant officials to respond to the negative scientific evidence and to reassess frontier nostalgia. The Second World War provided both a denouement of the northern farm settlement and a reason for many people to depart the 'last frontier'.  相似文献   

18.
The Canada census is one of the chief sources of demographic and socio-economic data for researchers in this country. Census variables are linked to geography files that allow researchers using geographic information systems (GIS) to view and analyze spatial data. Some of the most useful analysis, however, is based on changes in attribute values over time and space. Analysis of spatio- temporal events such as shifting migration patterns or changes in the distribution of health status permits a more dimensioned perspective than the viewing of static spatial phenomena. The analysis of spatio-temporal phenomena is limited by major changes in the spatial framework (e.g., location of road networks and other spatial entities) between national censuses. This paper addresses this limitation by (i) illustrating the extent of spatial mismatch between the 1996 and the 2001 census; (ii) examining attempts to rectify this problem in other jurisdictions and (iii) presenting a 'made-in-Canada' solution for conflation of census geometries. We believe that this solution will enhance the ability of Canadian researchers to describe and analyze socio-economic, health and demographic shifts across time and space. The research is supported by an ftp site for downloading the census geography rectification software presented in this paper.  相似文献   

19.
西汉铁官作坊生产的"大器"是装有犁鐴的大型铁犁,是为了满足政府推行代田法,特制的一种耦犁,大多供应于政府组织生产的西北垦区等地。  相似文献   

20.
This article presents the local gender contract of a smallholder irrigation farming community in Sibou, Kenya. Women's role in subsistence farming in Africa has mostly been analyzed through the lens of gender division of labor. In addition to this, we used the concept of ‘local gender contract’ to analyze cultural and material preconditions shaping gender-specific tasks in agricultural production, and consequently, men's and women's different strategies for adapting to climate variability. We show that the introduction of cash crops, as a trigger for negotiating women's and men's roles in the agricultural production, results in a process of gender contract renegotiation, and that families engaged in cash cropping are in the process of shifting from a ‘local resource contract’ to a ‘household income contract.’ Based on our analysis, we argue that a transformation of the local gender contract will have a direct impact on the community's adaptive capacity climate variability. It is, therefore, important to take the negotiation of local gender contracts into account in assessments of farming communities' adaptive capacity.  相似文献   

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