The Impact of Urbanisation on the Bed Sediments of South Creek,New South Wales

The textural and geochemical characteristics of the bed sediments in South Creek are examined. The bed substratum in the urbanised reaches differs from that of the rural reaches, in terms of the volume and size of the fine matrix sediment and the concentration of heavy metals. The impact of urbanisation on the river-bed sediment is variable, with less matrix than ‘expected’ within the substratum of the urban reach and more than ‘expected’ in the below urban reach. The urban matrix sediment is also significantly finer in comparison to the rural reach matrix sediment. Heavy metal concentrations within the urbanised matrix sediment are up to 800 times greater than background levels and are considered to be indicative of extreme contamination despite only SO years of urbanisation.     

An Initial Analysis of River Discharge and Rainfall in Coastal New South Wales,Australia Using Wavelet Transforms

In many coastal catchments of south eastern New South Wales, Australia, changes in river morphology are a response to human impact superimposed on spatial and temporal patterns of variability in precipitation and discharge. Understanding, and preferably quantifying, spatial and temporal patterns of hydrologic variability are essential to understanding natural changes, and to separate these from artificial changes in river systems. Prediction and management of water resources are also dependent upon this understanding. We assess the variability in precipitation and discharge using the wavelet transform which projects the time series of data into a three dimensional surface of frequency, amplitude and time. The analysis reveals that changes across time often reflect changes in individual seasons and may be linked to changes in particular seasonal atmospheric circulation systems. Strong perturbations in the analysis of one catchment are consistent with documented, geomorphically‐effective, flooding sequences. The characteristics of the series in the transformed data reveal interesting differences at certain times and scales which may be a reflection of changes in larger scale atmospheric processes.     

Potential impacts of sand and gravel extraction on the Hunter River,New South Wales

A number of investigations have been undertaken by the New South Wales Water Resources Commission to determine the regional and compound effects of large scale extractive industries on the stability of the Hunter River, New South Wales. Sedimentologic studies of bed material suggest that the Hunter River upstream of Denman has an armoured gravel bed that is immobile during regulated releases from Glenbawn Dam but is disrupted by moderate but less than bankfull flows. Annual bedloadyields have been computed by the bedload rating-flow duration technique for five river gauging stations. Approximate sand and gravel budgets for selected reaches of the Hunter River demonstrate that the present annual extraction rate from temporary sediment storages within the channel greatly exceeds the transport rate upstream of Denman and is approximately equal to the transport rate downstream of Denman. River degradation is imminent if extractive industries continue operating in the channel of the Hunter River     

Morphological Impacts and Implications of a Trial Release on the Wingecarribee River,New South Wales

A trial, monitored release on the Wingecarribee River over 27 days had a peak discharge below the Wingecarribee Dam of 1090 ML/d, which had a flow duration of 0.95 per cent. Morphological impacts on 29 km of channel below the dam included bank erosion, concentrated neck overflow, bed degradation and channel widening at recent cutoffs, sedimentation in weir pools and overbank flow, particularly at discharges greater than 800 ML/d. Prolonged operational releases at bankfull discharge (400–800 ML/d) will have the greatest morphologic impacts and should be avoided. Pulses which dissipate stream power over a broad, well-vegetated floodplain should be incorporated in the operational release policy, provided such pulses are phased to facilitate channel and vegetation recovery.     

Gender,Pay Equity and Human Service Work: A New South Wales Case Study

The 1998 New South Wales Pay Equity Inquiry demonstrates some limitations of dominant theoretical approaches to the undervaluation of work in female-dominated occupations and industries. Campaigns for equal pay could be enriched with a firmer understanding of the complexity of caring and emotional labour in women's paid human service occupations such as nursing, hairdressing and childcare. Such understandings can help redefine skill and worth so as more thoroughly to recognise and reward interpersonal work performed in female-dominated service occupations. Rejecting common moral and economic objections to placing monetary values on these traditionally feminine and ostensibly ‘non-economic’s activities is another ingredient for the historic achievement of gender pay equity.     

River metamorphosis and environmental change in the Macdonald Valley,New South Wales,since 1949

A significant metamorphosis of channel form occurred on the lower Macdonald River between 1949 and 1955; width and width-depth ratio increased and depth, sinuosity and weighted mean per cent silt-clay in the channel perimeter decreased. The channel has remained unstable since 1955, exhibiting frequent variations in bed elevation and a recent period of minor channel contraction followed by slight enlargement. Since 1946 there has been an increase in summer and annual rainfall and an abrupt, upward shift of the annual series flood frequency curve. As a result an increased proportion of the total sediment load of the river is now being transported as bed-material load. The change in sediment load is a result of greater stream competence and the consequent reworking of sandy sediment temporarily stored within the channel as benches. The observed channel changes are a quasi-adjustment to the increased flood and bed-material load discharges.     

Rural Development Patterns in Post-Reform China: The Pearl River Delta Region in the 1990s

Since the reforms that began in 1979, economic development in China has been marked by four major policy initiatives: the re-integration of the Chinese economy with the global economy, the decentralization of economic decision making away from the central state to lower levels, and, especially in the coastal regions, the shift away from subsistence agriculture towards rural industrialization and increasing commercialization. In this article, the effects of the reform policies are discussed in the context of the Pearl River delta region, the economic core of the southern Chinese province of Guangdong. Closely proximate to Hong Kong, with many Overseas Chinese connections, the province was given opportunities to innovate within the new policy option and has been marked by rapid economic growth. The article focuses on the impact of industrialization, commercialization, and globalization in four contrasting areas of the Pearl River delta in the 1980s and 1990s. At a general level, what McGee has called desakota zones have emerged and follow a development process which is similar to that observed in parts of East and Southeast Asia in the 1970s. When examined from the perspective of villages and localities, the blending of government policies, geographical location, and market forces with an array of local social values has resulted in separate and distinctive patterns of development.     

长江三角洲与珠江三角洲新石器时代经济形态比较研究

长江三角洲和珠江三角洲这一当今中国最富庶的两大区域的形成无疑有着深刻的人文历史背景,文章上溯至新石器时代对这两区域的文化异同及其原因作了全面的比较与分析。     

弱群心声：“出洋子弟勿相配”——珠三角侨乡歌谣中的出洋传统与家庭意识

随着鸦片战争后的出洋倾向,珠三角地区成为北美华人的祖籍家乡。北美六十多年的排华移民政策同时助长了当年珠三角侨乡的经济繁荣。然而,侨乡金山家庭物质富裕的表面,也掩盖了家庭分离中出洋者的谋生血泪和留守家里的金山妇的精神痛苦,对此华侨研究历史书上甚少记载或研究,却不加掩饰地生动地反映和保存在当年的妇孺民歌童谣里。本文以所收集到的新中国成立前的珠三角地区的妇孺民歌童谣为据,结合同时代在北美旧金山华人社区流传的粤讴体裁的＂金山歌＂作品,分析探讨了当年侨乡地方歌谣文化所反映的出洋传统、婚姻价值取向和留守家园的侨眷（妇孺）的生活形态、家庭意识及其不平则鸣的抗争声音。     

Bank Erosion in the Bellinger Valley,New South Wales: Definition and Management

Lateral channel migration is normal or autogenic, with bank erosion often on concave and accretion on convex banks. Where bank erosion occurs, particularly at an accelerated rate through land abuse and an increase in flood magnitude and frequency or allogenic, it threatens human use of the flood plain. There is a demand for protection, often with very little understanding of the erosion hazard. Measurements based on photogrammetry were used to define bank erosion and accretion, as well as width changes, in eight meander arcs (11 sections in each) over 41 years. It was concluded that, if this rate continued over the next century, 82 ha of alluvial land, 6.2 km of roads, two bridges, 9 homes and 51 home sites could be lost. Various management options, costs and benefits are given in order to show how future planning and protection can be more rational.     

Watercourses and Discourses: Coalmining in the Upper Hunter Valley,New South Wales

ABSTRACT Water is a resource that both unites and divides people in the Upper Hunter Valley of New South Wales, where many communities are facing the prospect of large‐scale open‐cut coalmining developments on productive mixed use land, or already live in proximity to mines and power stations. This article analyses conflicts over a proposed coal mine at Bickham in the Upper Hunter Valley, by contrasting the various protagonists' discourses of water scarcity, supply, and connectivity. It examines the ways in which the terms of opposition are narrowed to the arena of state and industry supported science and economic development, marginalising other cultural values and environmental ethics that are integral to opponents' discourses. Opponents have achieved some measure of success through contestation of the uncertain science of hydrological modelling, bolstered by the context of drought and increasing public acceptance of climate change science.     

先秦时期珠江三角洲环境变迁与文化演进

本文利用考古材料和多学科的研究成果,分析了先秦时期珠江三角洲的环境变迁与文化演进的关系。文章指出,如果自然资源丰富、种类多样互补和易于攫取,也能发育丰富多彩的、甚至是分层化的擢取经济文化,珠三角网河平原南部的渔猎采集和北部的渔捞采集经济文化,就是两个典型的实例。东周时期冲积平原火耕水耨经济文化的发展繁荣,促成珠江三角洲这个自然地理单元形成文化地理单元,又说明合理的区域文化也不可长久背离人类文化的发展方向。     

内地劳动力与海外华人资本的结合--珠江三角洲侨乡研究

1979年以来,以港澳台资本为先导和主力的华商率先在中国改革开放的前沿阵地--珠江三角洲侨乡落户,在带动侨乡工业化进程的同时,也使过去侨乡传统的劳动力结构发生巨大的变化.本文通过若干个案研究,分析侨乡劳动力市场与海外华人资本的结合模式及其对沿海侨乡、内陆地区及海外华商三方所产生的影响.     

Generation and accumulation of oil and condensates in the Wenchang A Sag, western Pearl River Mouth Basin, South China Sea

The Pearl River Mouth (PRM) Basin is one of four Cenozoic basins in the South China Sea, and the Wenchang A Sag is a secondary depression in the western part of the basin. Both the Wenchang and Enping formations contain good source rocks in the western PRM Basin; however, only the latter has been considered a likely source of the discovered oil and gas. New data from fluid inclusions and the analysis of oil–source rock correlations for the WC10-3 oil and gas pools indicate two stages of petroleum charging, the earlier originating from the Wenchang Formation and the later from the Enping Formation. Kinetics of petroleum generation and structural evolution modeling were employed to further investigate the mechanism of formation of the WC10-3 oil and gas pools. It was shown that the crucial condition for the formation of pools is the time of development of the structural trap. The Wenchang Formation source rocks generated oil from 25 to 14 Ma in the possible source area of the WC10-3 oil and gas pools in the Wenchang A Sag, so that only traps formed earlier than this period could capture oil sourced by the Wenchang Formation. The Enping Formation source rock experienced its oil window from 18 Ma to the present with the main stage of oil generation from 15 to 5 Ma. During this period structural traps in the sag continued to form until movements became weak, so that most pools in the Wenchang A Sag originated from the Enping Formation source rock. The likely dissipation of oil and gas from the earlier stage of charging should be taken into account in assessing the oil potential of the Wenchang A Sag.     

The Impact of Urbanisation on Water Quality in the Lane Cove River,Sydney New South Wales: a Comparison of Urban and Non-Urban Catchments

The Lane Cove River drains an established urbanised catchment and is impacted by urban runoff, point sources of pollution from sewer overflows and leachate from a refuse tip. The Sydney Water Board conducted a three year water quality monitoring programme assessing the impacts of pollution. The findings are presented and the impact of urbanisation evaluated by comparing water quality in urban and non-urban catchments. Water quality in a near-pristine control creek was consistently better than the urban catchment in all weather conditions. During wet weather, water quality in urban creeks deteriorated significantly, although the control creek generally remained in a near-pristine condition. Poor water quality in urbanised reaches of the catchment has degraded the aquatic ecosystem, encouraged and sustained weed infestation of the riparian environment and restricted recreational use of the river.     

Landscape and Soil Development on Monaro Basalt West of Nimmitabel,New South Wales

Prolonged stability of the southern tableland of NSW, developed on early Tertiary Monaro basalt, is evident from weak landscape dissection and numerous small lakes. However, poorly developed soils and weathered zones are inconsistent with prolonged Cainozoic weathering or formation under climates substantially different to the present. Thin Holocene sediments are also at variance with the sizes of the lake basins. Low depositional landforms, termed ‘lake shadows’, occur on the eastern perimeters of most lakes, and comprise clay pellets blown from basin floors during dry phases. Deflation, dominantly during Quaternary glacial periods, and reactivated today, is responsible for the thin soils and sediment cover. The lake basins are partly solutional and partly deflational features. The modern soil cover reflects the modern climate.     

Rural Transformation and Cultural Industries: Popular Music on the New South Wales Far North Coast

This article explores the emergence of popular music as a niche cultural industry, connected to economic and social transformations on the New South Wales Far North Coast (also known as the ‘Northern Rivers’ region). The various images of the New South Wales Far North Coast as a ‘lifestyle’ region, ‘alternative’ locale and coastal retreat have attracted a diverse mix of ex–urban professionals, unemployed persons, youth subcultures, backpacker tourists and retirees. Yet, despite population growth, the region continues to suffer unemployment rates among the highest in Australia. Against this backdrop, diverse popular music ‘scenes’ have emerged, constituting an industry with linkages to cultural production in Sydney, Melbourne and overseas. While the region’s unique cultural mix has been suggested as a key site of comparative advantage, future employment is likely to remain transient, insecure, and governed by industry–wide labour relations. This case study illustrates some of the complexities underpinning contemporary urban–regional change in Australia, and provides cautious assessment of the capacity of the cultural industries to reinvigorate rural economies.