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121.
Holly M. Hapke 《The Professional geographer》2001,53(3):313-331
This article examines the interplay of gender, caste‐religion, and household survival strategy formation among Christian and Muslim fisher folk in the south Indian state of Kerala. The methodology consisted of surveys of forty‐one households in two villages in which data pertaining to male and female work patterns and other household level data were collected in the summer of 1999. My analysis demonstrates how particular ideologies of gender and work associated with different caste‐religion communities influence the strategies individual households adopt. I discuss intersections between gender and caste‐religion with other socioeconomic factors and illustrate the manner in which gender then gets reworked in particular ways in the course of economic transformation. 相似文献
122.
Richard Howitt 《The Australian geographer》1993,24(1):33-44
Difficulties in relating local scale change to broader dynamics of social and economic restructuring continue to be reflected in much geographical research. This paper argues that inadequate conceptualisations of geographical scale restrict the relevance of much research to the agenda of an applied peoples' geography. A framework which conceptualises geographical scale as dialectically and internally related to the totality of social relations, is proposed and discussed with examples from remote mining regions in Australia. 相似文献
123.
124.
Ivan J. Townshend 《GeoJournal》2006,66(1-2):103-120
The privatization of urban space, as represented in the trend towards a wide variety of common interest developments and increasing
prevalence of gated communities, is an international phenomenon. Recent research has not systematically explored the ways
in which these types of developments are collectively re-shaping the public and private realms of the city at large. This
empirical study of community areas in a Canadian city describes a number of historical private neighbourhood development trends
and their convergence in space and time. Based on the empirical generalizations, a conceptual model is developed to illustrate
how the trends may have combined to produce a new geography or ecology of space privatization within the city, one in which
the older public city is being circumscribed and bounded by new territories of multi-tiered privatization. 相似文献
125.
Stanley D. Brunn 《GeoJournal》2006,66(1-2):5-13
Three interrelated concepts about the “gatedness of life” are addressed in this essay: gated communities, gated lives, and
gated minds. All are important components in understanding the places where gated communities are located within a city as
well as those who live in them. Mapping these concepts is a further theme discussed. 相似文献
126.
Coral bleaching, involving the expulsion of symbiotic zooxanthellae from the host cells, poses a major threat to coral reefs throughout their distributional range. The role of temperature in coral bleaching has been extensively investigated and is widely accepted. A bleaching event was observed on the marginal high-latitude reefs of South Africa located at Sodwana Bay during the summer months of 2000. This was associated with increased sea temperatures with high seasonal peaks in summer and increased radiation in exceptionally clear water. The bleaching was limited to Two-mile Reef and Nine-mile Reef at Sodwana Bay and affected <12% of the total living cover on Two-mile Reef. Montipora spp., Alveopora spongiosa and Acropora spp. were bleached, as well as some Alcyoniidae (Sinularia dura, Lobophytum depressum, L. patulum). A cyclical increase in sea temperature (with a period of 5–6 years) was recorded during 1998–2000 in addition to the regional temperature increase caused by the El Niño Southern Oscillation phenomenon. The mean sea temperature increased at a rate of 0.27 °C year−1 from May 1994 to April 2000. High maximum temperatures were measured (>29 °C). The lowest mean monthly and the mean maximum monthly temperatures at which coral bleaching occurred were 27.5 and 28.8 °C, respectively, while the duration for which high temperatures occurred in 2000 was 67 days at 27.5 °C (4 days at 28.8 °C). Increased water clarity and radiation appeared to be a synergistic cause in the coral bleaching encountered at Sodwana Bay. 相似文献
127.
A most distinctive feature of the settlement pattern of the Brasov area is the extreme dispersal of mixed farming encountered
in the western extreme of the county to the north and south of Zarnesti: the Bran and Poiana Marului areas. Here a system
of peasant subsistence farming developed in a political borderland between the Habsburg and Ottoman Empires. Despite feudal
pressures, the peasantry took all available opportunities to extend their independence including elaborate transhumance systems.
And after seeing transfrontier commerce as a source of plunder, in the tradition of Balkan highway robbery within relatively
unregulated spaces, the peasantry has profited through employment in factories, particularly during the communist period.
However, the current recession in manufacturing is throwing the rural population back on limited land resources. Although
farming assumes an important subsistence role which contributes to stability, the long-term survival of these communities
will depend on new sources of income. Rural tourism has considerable potential and a promising start has been made in Bran.
There are, however, constraints on the further development of the business and great attention will have to be given to the
conservation of the environment in both the Bucegi Mountains and the Piatra Craiului where national park status is proposed.
This revised version was published online in July 2006 with corrections to the Cover Date. 相似文献
128.
INTRODUCTIONChrbondioxideandInehanearethetwomostabundantabosphericcarbonspedes.Methane'sconcenhati0nintheboposphereinonsesO.7-l.l%peryearraasmussenandKhaili,l98l,BlakeandRowand,l988,Scheeetal.,l989).Ihauseofmethne'sforpaCtontheearth'sclirnateandthechernistryoftheatInosphere,thebudgetofabosphericmethanehasmivedconsiderableattchti0n.Wetlandsareestirnataltobeoneofthelamptsoimofabosphericmethane,aocountingforab0ut4O%to5O%0ftheglobalInehanesoonannually(Cforneand0reInland,l988,WhitingandC… 相似文献
129.
Bottom sediment was analysed, via grab, trawl and underwater photography in 1991–1992 in the Barents, White, Kara, Norwegian and Greenland Seas, and the large scale features of macrobenthos distribution are described. The maps of alpha-diversity, biomass and trophic zone distribution on the investigated shelf are presented. Statistical assessment of the bottom community structure changes during the last 60–70 years for the Barents Sea area is presented. It is shown that on regional and transregional levels the researched communities are of natural undisturbed character and that the revealed changes may be both the result of natural processes or sampling errors. Local disturbances of benthos composition and structure, supposedly caused by man, are found to be rare not far from the Novaya Zemlya and Murman coasts. 相似文献
130.
The present study provides an analysis of soil, vegetation types as well as structure and species distribution in 19 sites in El-Qaa plain along the Gulf of Suez (south Sinai, Egypt), and focuses on the environmental factors that control the species distribution. A total of 203 species belonging to 39 families of the vascular plants are recorded. Asteraceae, Fabaceae, Chenopodiaceae and Poaceae are the largest families. Grasses constitute only 9% of the recorded species, while the woody perennials (shrubs and sub-shrubs) are highly dominated (46%). Therophytes and chamaephytes are the most frequent, denoting a typical desert life-form spectrum. Floristic composition in the different geomorphologic landscape units showed differences in species richness. The highest mean species richness of 19.7±1.7 is recorded in the wadi channels. The lowest species richness values are recorded in the coastal shore and playas (6.0±1.4) and in the alluvial fans (mean of 8.4±1.6 species). Chorological analysis revealed that 46% of the studied species are uniregional, being native to the Saharo-Arabian region. On the other hand, about 50% of the recorded species are biregional and pluriregional, extending their distribution all over the Saharo-Arabian, Sudano-Zambezian, Irano-Turanian and Mediterranean regions. Classification of the vegetation is analysed using two-way indicator species analysis (TWINSPAN) techniques resulted in the recognition of five vegetation groups, each of definite vegetation and soil characters, and could be linked to a specific geomorphologic unit. Capparis spinosa var. spinosa occupied the terraces, Cornulaca monacantha, Convolvulus lanatus and Deverra tortuosa inhabited the alluvial plains, Launaea nudicaulis and Artemisia judaica characterized the wadi channels, Acacia tortilis subsp. raddiana and Leptadenia pyrotechnica characterized the alluvial fans and Tamarix nilotica, Zygophyllum album and Nitraria retusa on the playas and the coastal shore. Ordination techniques as detrended correspondence analysis (DCA) and canonical correspondence analysis (CCA) are used to examine the relationship between the vegetation and studied soil parameters. Nine soil variables are included: electrical conductivity, pH, calcium carbonate, gypsum, organic matter, gravel, fine soil fractions and soil saturation percentage. Analysis with DCA gave results similar to CCA, suggesting that there is a relatively high correspondence between vegetation and soil factors. DCA axis 1 showed significant positive correlation with CaCO3, pH, soil saturation and organic matter, and interpreted as a calcium carbonate—soil saturation gradient. DCA axis 2 showed significant correlation with pH, gypsum and electric conductivity, and interpreted as an electric conductivity—gypsum gradient. Application of CCA indicated that soil surface sediment, CaCO3, soil saturation, pH and organic matter are the main operating edaphic gradients in the area. These gradients are related closely to the first three canonical axes, and accounted for 67% of the species–environment relationship among the sites. 相似文献