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Warren K. Martin 《Geographical Research》2005,43(2):162-172
Vegetation structure and composition during the pre‐ and early‐European period in Australia is often proposed as a benchmark against which to measure the effects of modern landscape management practices. However, little quantifiable information exists for that historical period. One potential source of information is the land survey record, used in this study to provide estimates of tree densities that existed during the period 1870 to 1900 in part of central New South Wales. Estimates were obtained for 23 parishes in the north Lachlan River valley, between the towns of Condobolin and Tottenham. Densities were calculated from portion corner to nearest tree data obtained from historical survey plans, using the plotless, closest individual method. Densities ranged from 6.0 to 31.4 trees per hectare for parishes with enough data points for reliable calculation. These figures would account for trees of a diameter large enough to be blazed with a survey mark. Any smaller trees would be additional and, although no quantitative data existed for this, qualitative evidence suggested that the figures obtained were more likely to be underestimates due to the presence of such small trees. The study area was predominantly covered by woodlands which varied in density across the landscape, in comparison to the modern landscape where much of the native vegetation has been cleared for agriculture. Although the tree density figures should be considered to be indicative rather than precise, they provide quantifiable historical figures for past conditions in an area where the historical record is otherwise sparse. Such information is valuable for interpreting ecological changes brought about by modern land management. 相似文献
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Maria Dolors Garcia-Ramon Tony Luna-Garcia 《Gender, place and culture : a journal of feminist geography》2007,14(1):35-41
The main goal of the paper is to study Jan Monk's contribution to the development of international gender geography, in particular in Spain. Our aim is also to explain the experiences and numerous connections among places, people and ideas that she has been weaving to foster international scholarship and, in this way, how she has challenged hegemonic approaches in feminist geography. Jan Monk comes originally from the Southern hemisphere and therefore she is well aware of the extent to which ‘Northern’ (or Anglo-American) ways of seeing the world define concepts, theories and ideas in geography (and also in feminist geography). Being an ‘insider’ and an ‘outsider’ as well as her sensibility to the important of place has permeated Jan's contribution to international gender geography. 相似文献
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A series of energy dispersive X-ray fluorescence analyses has been undertaken in response to archaeological problems relating to 1st millennium AD glass excavated in Britain. The aim of the work was to furnish a set of comparable analytical results to be used in assessing hypotheses concerning the general state and development of glass technology through this period. Within this framework, however, it has also been possible to attempt answers to specific archaeological questions relating to material from particular sites. The paper discusses the background to, and the interpretation of such results, particulars of the analytical technique used, a general overview of approximately 200 analyses and three examples of the use of this data in relation to specific archaeological problems. 相似文献