DuBois the pan-Africanist and the development of African nationalism

While W.E.B. DuBois's importance as a political activist and writer is well-documented, a ‘DuBoisian’ political theory has proved illusory. I argue that the key to change and continuity in DuBois's work is his pan-Africanism, which he used to develop a broad theory of anti-colonial nationalism. This reading of his legacy emphasizes DuBois's singular role in shaping anti-colonial discourse in the postwar era, especially in Africa, as well as in theorizing African nationalism and the African diaspora. It also allows us to understand the contradiction of the early, liberal DuBois's views on race and his later preoccupation with Communism. I suggest that across both positions, DuBois's actual political arguments remained over-determined by his positionality within the colonial world, producing a set of anti-colonial arguments that while rooted in the economic exploitation of the colonies, appeal to liberal universalizing standards of progress and modernity.     

酶修复土壤农药污染的研究进展

1　农药生物修复的重要性和紧迫性农药是人们主动投放于环境中数量最大、毒性最广的一类化学物质 [1] ,据统计 [2 ,5] ,1 960年世界农药的销售额仅为 8.5亿美元 ,1 994年增加到 2 78亿美元 ,增长 32 .71倍。在我国 ,农药至少占农业生产费用的 3% ,每年施用量 5.0× 1 0 5～ 6.0× 1 0 5t,其中约 80 %的农药直接进入环境 ,导致现有耕地的 1 /7受到不同程度污染 ,过量施用的农田约 1 .33×1 0 6ha,可见 ,农药已成为土壤主要污染源之一。同时由于土壤中农药 [4 ]的化学性质比较稳定 ,不易分解 ,如 DDT分解 95%需 4～ 30年 ,六六六 3～ 2 0年 …     

The resurgence in resource nationalism and private protected areas: Through the lens of Save Valley Conservancy's indigenisation

It has been observed that the resurgence in resource nationalism in the past decade worldwide has profound implications for all economic sectors including protected areas. However, a review of the international protected area literature reveals a paucity of studies that make use of the construct of resource nationalism as an analytical framework. This paper addresses this gap by bringing to the fore how Zimbabwe's ZANU PF (the political party that brought the country's independence in 1980) has deployed and extended this construct from the 2000 land reform programme to one of the world's largest private wildlife sanctuaries, namely the Save Valley Conservancy (SVC). In doing so, the paper relies extensively on the narratives, debates and legitimations of the ruling elite and other stakeholders around the recent ‘indigenisation’ of the SVC. It was found that a range of actors attempted to use resource nationalism as a ‘resource’ to further their own private economic and political interests whilst others resorted to the conservation discourse. One of the main conclusions of this paper is that managers of protected areas need to be sensitive to the resurgence in resource nationalism. In this connection, it is argued that the ability to negotiate the resurgence in resource nationalism will determine the fate of some private protected areas. The study suggests possible solutions around the indigenisation of SVC and points to future research priorities.     

Lumbee Indian cultural nationalism and ethnogenesis

Conclusions In both cultural and political nationalism we find people attempting to make their own history from within, but at the same time seeking to move beyond the conditions imposed upon them. Because oppression is not just political and economic, but cultural as well, cultural nationalism is a liberating force. Through cultural nationalism, the Lumbee seek to generate their own culture, in contradistinction to the culture that flows from their oppressed position.But the liberating potential of cultural nationalism is only partial in the presence of political and economic exploitation. Cultural nationalism provides an abstract cultural unification of the Lumbee, and it calls for political and economic equality between Lumbee and Whites. Implicit in Lumbee cultural unification is internal socio-economic equality, but as their cultural nationalism seeks to move from self-definition to self-determination, it says nothing explicit about this.The absence of a specific program for internal social and economic transformations, in the direction of establishing equality, makes it possible for cultural nationalism to be based on an alliance between the emerging Lumbee elite and the Lumbee working class. The rise of the Tuscarora movement points to the likelihood that this alliance will be short-lived.A contradiction has appeared: at the same time that cultural nationalism, by generating not just pride but collective pride, functions to hold the Lumbee together culturally, it also functions to widen class divisions. It is too early to predict how this contradiction will be resolved, but its centrality indicates that the future political development of the Lumbee will lie in its resolution. Either cultural nationalism will move in the direction of a program of social equality, which would yield cultural unification and enhance the sense of political and economic reality, or it seems likely that cultural nationalism will do what white oppression could not — it will split the Lumbee apart and reinforce the penetration of the Lumbee community by national and multinational corporations.An alliance between cultural and political nationalism, based on the collectivization of Lumbee resources and the expansion of the cultural content of cultural nationalism to include recognition of the dynamics of class formation, seems to be necessary to permit the Lumbee to enjoy the right to make their own history. Such an alliance would entail a greater transformation of the cultural than the political nationalist position. This could occur with the ethnic elite backing cultural nationalism, since the elite witness the continual looting of their people under the aegis of the large corporations that they help bring in, and/or it could occur as their political power is eroded by the continual attacks of the political nationalists. As the only significant accumulators of capital among the Lumbee, however small, their role in an alliance would then lie in their participation in the initial founding of a socialist sub-economy. It could well be argued that this is asking the ethnic elite to commit suicide as a class. Yet the choice seems to be between that outcome, however arrived at, and abandoning communal identity.The split between cultural and political nationalism is basically a class antagonism. If the cultural nationalists win this struggle, the only answer — paradoxically — to the pressing material needs and problems of the poorer Lumbee may well turn out to be an abandonment of their cultural identity as Lumbee in a straightforward lower class alliance within the larger nation-state. Should the political nationalists become the dominant power among the Lumbee then perhaps sufficient economic and political self-determination might be established to provide the basis for a nontrivialized Lumbee Indian culture. The poignancy of this inversion of the intent and the effect of cultural nationalism can only be realized by appreciating the deep and genuine cultural concern — whether also opportunistic or not — of most Lumbee cultural nationalists.There are, in the usual view, two options open to a people such as the Lumbee. The first is stagnation, clinging to their roots and changing as little as possible: preservation with continued impoverishment as the likely price. The second is progress or economic development, with the attendant major increase in assimilationist pressures brought about by the increased penetration of the dominant state: modest material betterment at the price of major cultural decline. Cultural nationalism resists the first option as an obvious affront to collective pride. It also, however, eventually resists the second option, being opposed not just to the debasement of culture but also to its destruction. Whatever its present strength, it thus has no future.The absence of ethnogenesis from this usual array of options reflects not just a limited anthropological or ethnic nationalist vision, but the real limitations of capitalism. Fundamental to capitalist economic processes are regional inequalities. As has been well demonstrated, these regional inequalities generate nationalism, they do not, however, create nationalities. The precondition for the ethnogenetic formation of viable nations from submerged and dominated minority peoples — for a world that culture not only symbolizes, but creates — is the kind of regional equality and communal material foundation conceivable under socialism.Gerald Sider is Associate Professor of Anthropology at Richmond College, City University of New York.

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硅藻重金属污染生态学研究进展

硅藻是水生生态系统健康的指示生物之一,对环境变化极为敏感,某些典型硅藻已应用于指示水体重金属污染.本文围绕地表水重金属污染,从毒性效应、生物吸附和累积、生态适应机制及生物指示与生态修复作用等方面,综述了硅藻重金属污染生态学研究进展,阐述重金属污染下硅藻的生长趋势和硅壳形态的变化,硅藻对重金属生物吸附和生物累积的差别,硅藻对重金属的表面络合和离子交换等生态适应机制,以及硅藻对水体重金属污染的指示作用和生态修复作用,为水生生态系统的重金属污染防治与预警技术提供科学依据.     

污染生态学研究的回顾与展望

自20世纪70年代开始,伴随着我国环境科学的兴起和应用生态学的发展,污染生态学经历发生、成长、发展和壮大等几个历史阶段。已经形成了具有自己学科特色的理论体系和研究方法论,如今,污染生态学已成为研究生物系统与被污染环境之间相互作用规律及采用生态学原理对污染环境进行控制与修复的一门独立科学,是应用生态学的重要组成部分,是生态学与环境科学相互融合,相互交叉的产物,在新世纪的头20年中,污染生态学面临着新的机遇和挑战,它将在复合污染生态学,污染生态过程研究、污染生态毒理学和污染生态修复等分支领域和科学前沿取得重要进展和突破。     

From geochemical background determination to pollution assessment of heavy metals in sediments and soils

Establishing geochemical background concentrations to distinguish the natural background from anthropogenic concentrations of heavy metals in sediments and soils is necessary to develop guidelines for environmental legislation. Due to the fact that the background concentrations strongly depend on geological characteristics such as mineral composition, grain size distribution and organic matter content, several normalization methods have been developed. Empirical (geochemical), theoretical (statistical) and integrated methods (combining both empirical and theoretical methods) are the main approaches described in literature for determination of geochemical background concentrations. In this review paper, the different approaches as well as the main normalization methods for heavy metal concentrations in sediments and soils will be discussed. Both geochemical background concentrations and added risk level (maximum permissible addition) should be taken into account for setting up legal threshold limits. Moreover, different approaches to evaluate the pollution status of heavy metals in sediments and soils, from Sediment/Soil Quality Guidelines to quantitative indices (Geo-accumulation Index-I_geo, Enrichment Factor-EF, Pollution Load Index-PLI and Risk assessment Code-RAC) will be presented. Although guidelines to establish whether a sediment or soil is polluted or not are generally only related to total metal concentrations, the available/reactive pool i.e., availability/reactivity of metals should be taken into account for sediment/soil pollution assessment.     

Science,Politics and Policy: How Michiganders think about the Risks Facing the Great Lakes

The Great Lakes region is an important ecological asset for the United States, yet studies show that several environmental risks threaten its viability. As a result, it is important to respond to these risks with effective policies. When and how policy is implemented often depends on public opinion and perceptions; yet, we understand little about how individuals from the Great Lakes region construct opinions about the threats facing the lakes. We seek to understand how individuals from the state of Michigan form opinions on three risks to the lakes: invasive Asian carp, climate change, and offshore drilling. To do this, we evaluate the utility of two dominant models of environmental opinion formation: trust and deference to scientific authority, and partisan bias and motivated reasoning. We find that when issues have been politicized, opinion is greatly influenced by political factors like partisanship but that trust and deference as well as underlying environmental attitudes play a more important role for issues that have not been politicized. We discuss the implications of these findings in terms of policy and communication in Michigan, arguing that if we want Michiganders to support policy consistent with science, they must view risk in ways that are consistent with scientific consensus. For that to happen, advocates and policy makers must focus on reducing the political rhetoric around these threats, developing communication that taps into underlying trust and deference to science, and using underlying attitudes about the role of government in environmental protection to promote environmental policy.     

Pollution effects on fisheries — potential management activities

Management of ocean pollution must be based on the best available scientific information, with adequate consideration of economic, social, and political realities. Unfortunately, the best available scientific information about pollution effects on fisheries is often fragmentary, and often conjectural; therefore a primary concern of management should be a critical review and assessment of available factual information about effects of pollutants on fish and shellfish stocks. A major problem in any such review and assessment is the separation of pollutant effects from the effects of all the other environmental factors that influence survival and well-being of marine animals. Data from long-term monitoring of resource abundance, and from monitoring of all determinant environmental variables, will be required for analyses that lead to resolution of the problem. Information must also be acquired about fluxes of contaminants through resource-related ecosystems, and about contaminant effects on resource species as demonstrated in field and laboratory experiments. Other possible management activities include: (1) encouragement of continued efforts to document clearly the localized and general effects of pollution on living resources; (2) continued pressure to identify and use reliable biological indicators of environmental degradation (indicators of choice at present are: unusually high levels of genetic and other anomalies in the earliest life history stages; presence of pollution-associated disease signs, particularly fin erosion and ulcers, in fish; and biochemical/physiological changes); and (3) major efforts to reduce inputs of pollutants clearly demonstrated to be harmful to living resources, from point sources as well as ocean dumping. Such pollution management activities, based on continuous efforts in stock assessment, environmental assessment, and experimental studies, can help to insure that rational decisions will be made about uses and abuses of coastal/estuarine waters.     

Mediterranean pollution: Problem and response

Abstract

International efforts aimed at control of pollution of the Mediterranean Sea are unique in the extent to which politically diverse coastal states and a wide variety of international agencies are implementing cooperative programs of scientific research, education and training, planning, and treaty drafting. Continuing environmental cooperation in the Mediterranean reflects the political utility of pollution as a regional issue. Governments, the Mediterranean scientific community, and international organizations derive common benefits from maintaining the momentum of the United Nations Environment Programme‐sponsored activities, despite declining global interest in environmental concerns.     

Heavy metal pollution affects dawn singing behaviour in a small passerine bird

Although several studies have suggested that behavioural measures may be more comprehensive than other biomarkers for indicating an organism’s health or welfare, this has rarely been investigated in free-living terrestrial vertebrates. Here we examine the expression of dawn singing behaviour in a free-living small songbird in relation to environmental pollution. We compared the singing behaviour of male great tits Parus major inhabiting an area extremely polluted with heavy metals with that of males inhabiting areas of low(er) pollution (at 4 and 20 km distance from the pollution source). Males at the most polluted site had a significantly smaller repertoire size than males at the two other sites. They also produced a significantly lower total amount of song during the dawn chorus than the males at a distance of 4 km from the pollution source. Our results, although non-experimental and obtained in field conditions, strongly suggest that heavy metal pollution might affect the expression of singing behaviour. Taking into account that previous studies were not able to detect clear, straightforward differences between the health of great tits at the most polluted site and at 4 km distance from the pollution source, our results suggest that the singing behaviour of great tits may be a useful indicator of environmental stress at the population level.     

细菌生物膜在农田土壤污染修复中的应用研究进展

全球农田土壤污染日趋严重。重金属、农药、微塑料作为常见的土壤污染物,已对农田生态系统与粮食安全造成严重威胁。细菌生物膜(bacterial biofilm,BF)作为分布于细菌表面的多组分聚集体,近年来已被证明在环境保护领域具有较高的应用价值。本文主要介绍了细菌生物膜的组成和功能,并对近年来细菌及其生物膜在重金属、有机物污染土壤修复中的应用及机理进行综述,展望生物膜群落结构在污染土壤中的修复潜力,以期深入理解细菌生物膜的关键作用,为挖掘更多细菌生物膜在环境保护方面的应用潜力提供理论指导。     

Environmental Pollution and Leaf Cuticular Variation in Kudzu (Pueraria lobata Willd.)

Four populations of kudzu (Puerarta lobata Willd.) were studiedin rural, relatively unpolluted areas and in habitats characterizedby heavy industrial pollution in north-west Tennessee, U.S.A.Leaf length, leaf width, petiole length, flower size and podsize showed a decrease in growth in heavily polluted areas.Trichome frequency and length on the leaf surfaces increasedwith an increase in environmental pollution while the stomatalfrequency values showed a slight decrease in polluted habitats.The length of the largest and the smallest stomata and the numberof undulations in the epidermal cells in kudzu plant populationswere not affected by environmental pollution. Subsidiary cellcomplex consisting of two cells also remained the same in allthe plant populations sampled in polluted and relatively unpollutedhabitats. Puerarialobata Willd., kudzu, environmental pollution, cuticular features, stomatal frequency, trichome frequency     

Scientific motherhood,responsibility, and hope: umbilical cord blood banking in South Korea

This paper explores how concepts of hope, motherhood, responsibility, and science are mobilized and transformed in the marketing strategies of private cord blood banks in South Korea. Cord blood banking provides a useful case study of the “political economy of hope,” which emphasizes future expectations over current utility. In particular, appeals to hope are rendered natural as being applied in relation to various concepts of motherhood (e.g. “scientific motherhood” and “consumer motherhood”), thereby refiguring ideas of a mother's responsibility to her child. In South Korea, cord blood banks rely heavily on the discourse of “scientific motherhood,” which is based on certain gender norms and ideas about science, modernity, and “advanced society.” By exploring the discourse of scientific motherhood, this study reexamines the “political economy of hope” through the lenses of gender and transnationalism.     

The Palestinian cause in Syrian nationalism

This article examines the role of the Palestinian cause in Syrian nationalism over the past century, specifically in how it served to unite political leadership and people during times of crisis. Syrian nationalism emerged from Pan-Arabism and remained closely affiliated with the political ideology of Arab unity that could not be complete without Palestine. It was closely associated with the anti-colonial struggle that included the Zionist encroachment on Palestine. However, Syrian nationalism was full of contradictions and ambiguities from the beginning as the nation was composed of groups with competing interests. I argue the Palestinian cause was important for overcoming the ambiguities of Syrian nationalism and allowed for the different groups to find a common ground through their support for the cause. While most work examines the role of the Palestinian cause as a political ideology, I demonstrate that it informed political practices and patronage as well. Support for the cause was based on the cultural system that existed in the Ottoman period and prior to the colonial division of the Arab Middle East into separate nation-states. It allowed for the political and cultural networks to emerge in the post-empire period. The political practices surrounding the cause such as demonstrations continued through Syrian history particularly during period of crises. Support for the cause was enforced through social and personal networks in which ordinary Syrians and their leaders engaged. I conclude with how the current crisis in Syria illustrates the limits of the cause in bridging social and political divisions in Syrian society.     

污染生态化学:现状与展望

随着生态学和环境化学的发展和交叉,形成了一门新的学科－污染生态化学。目前,它的主要研究内容包括化学污染物的迁移转化及其微观生态化学过程、化学污染的生态效应与毒理及生态风险评价、全球变化的生态化学、生态系统中化学污染物的分析与监测和污染控制生态化学等５个方面。在知识创新的科学目标指导下,污染生态化学今后的工作必须加强从理论上进行突破,在对基础研究进行深入的同时,应该特别注意开展一些应用研究,从而实现     

"Wild Capitalism" and "Ecocolonialism": A Tale of Two Rivers

The development and pollution of two rivers, the Danube and Tisza, have been the site and subject of environmental protests and projects in Hungary since the late 1980s. Protests against the damming of the Danube rallied opposition to the state socialist government, drawing on discourses of national sovereignty and international environmentalism. The Tisza suffered a major environmental disaster in 2000, when a globally financed gold mine in Romania spilled thousands of tons of cyanide and other heavy metals into the river, sending a plume of pollution downriver into neighboring countries. In this article, I examine the symbolic ecologies that emerged in the two moments of environmental protest, as well as Hungarian activists' reflections on the changing political ecology of the region in their discourses of "ecocolonialism" ( ökógyarmatosítás ) and "wild capitalism" ( vadkapitaliszmus ).     

Max Weber in the thought of Edward Shils (1910–1995) and Ernest Gellner (1925–1995): the paradox of two Weberian approaches to the understanding of nations and nationalism?

This article traces the paradoxical impact of Weber's oeuvre on two major scholars of nationalism, Ernest Gellner and Edward Shils. Both these scholars died in 1995, leaving behind a rich corpus of writings on the nation and nationalism, much of which was inspired by Max Weber. The paradox is that although neither scholar accepted Weber's sceptical attitude to the concept of ‘nation’, they both used his other major concepts, such as ‘rationality’, ‘disenchantment’, ‘unintended consequences’, the ‘ethic of responsibility’ and ‘charisma’, in their very analyses of the nation and nationalism. And they both saw, each in his own way, the nation and nationalism as constitutive elements of modern societies. However, the paradox ceases being a paradox if one sees the integration, by Shils and Gellner, of concepts of the nation and of nationalism in the analysis of modernity, as a development of Weber's ideas.     

Estuarine benthic ecology: A European perspective

The study of benthic ecology within European estuaries is discussed. The history of estuarine science, and the definition of an estuary is briefly reviewed. Estuarine benthic ecology is considered with regard to its geographical, economic and political context. It is shown that much recent study has been motivated by attempts to clean up estuaries, which were polluted after decades, or even centuries of pollution. Much has been achieved in the control of pollution, and many estuaries show clear signs of recovery. Particular focus has been on the estuaries entering the North Sea, with the realization that it is not the North Sea that is polluted, but its estuaries. The scientific appraisal of the benthos of estuaries has been particularly assisted by the ecosystem approach, which has both aided our understanding of their function as well as answering some of the questions posed by the impact of mankind. The European Union is identified as a powerful factor in benthic ecology, either through legislation or through the encouragement of collaborative programs, some of which have been particularly important in identifying common factors across a wide geographical spread of estuaries. It is concluded that in general estuaries have got cleaner, but that many problems remain, ranging from eutrophication through to sea-level change. The future of estuarine benthic ecology lies in meeting the new challenges.     

藏中矿区重金属污染土壤的微生物活性变化

微生物几乎参与土壤中的一切生物及生物化学反应,土壤微生物活性可较敏感地反映土壤中生化反应的方向和强度,是探讨重金属污染生态效应的有效途径之一。通过野外调查与采样和室内分析,研究了藏中矿区重金属污染对土壤酶活性、基础呼吸、代谢商(qCO2)和可矿化N的影响。结果表明,矿区土壤受重金属Cu、Zn、Pb、Cd不同程度污染,使得土壤酶活性、可矿化N受到抑制,基础呼吸和qCO2则受到刺激。逐步多元回归分析表明,在Cu、Zn、Pb、Cd复合污染条件下,矿区土壤重金属复合污染对土壤微生物活性的影响是复杂的;主成分分析表明,土壤总体微生物活性指标能较好地反映拉屋矿区土壤重金属复合污染状况,可作为藏中矿区土壤环境质量评价及量化分类的有效指标。