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1.
舟山群岛海洋环境资源及其开发利用   总被引:1,自引:0,他引:1  
舟山群岛地处长江三角洲,位于长江水道和我国南北洋通道交汇的前沿,拥有独特的深水岸线资源,以及丰富的海洋渔业资源和海洋旅游资源。长江三角洲地区是我国最大的经济核心区,对全国经济具有强有力的拉动作用,但一方面因受河口拦门沙的影响,缺乏深水岸线资源,另一方面海岛旅游资源匮乏。基于对舟山群岛的实地调查研究,指出舟山群岛海洋环境资源在长江三角洲中的独特性,并提出舟山群岛海洋资源利用的主要方向:①发展国际性深水中转港,大宗货物的临港加工业基地及长江三角洲货物外运的备选深水港基地;②改进传统渔业,着重发展深水养殖业及远洋渔业等新型渔业;③开辟海岛休闲度假旅游,填补长江三角洲缺乏海岛旅游的缺项。  相似文献   

2.
The use and management of natural capital is critical in all nations, but especially so in poor nations. The role of institutions – chiefly, property rights and pricing systems for natural resources – is pivotal in achieving growth and improved distribution of income and wealth, in understanding environmental degradation, and in seeking improved policy. Particularly useful criteria and indicators of sustainable development relate to `green' output and productivity measures in which the depreciation of natural capital is being considered. Special management problems exist for `critical' components of natural capital to which variants of the precautionary principle must be applied to ensure that our heirs receive an undiminished patrimony.  相似文献   

3.
People's Biodiversity Registers: Lessons Learnt   总被引:1,自引:1,他引:0  
People's Biodiversity Registers (PBR) document folk knowledge of status, uses, history, ongoing changes and forces driving changes in biodiversity resources, gainers and losers in these processes and people's perceptions of how these resources should be managed. A number of PBRs have been prepared in different parts of India beginning 1995 through initiatives of NGOs and educational institutions working with local communities and village councils. These attempts have been motivated by a desire to promote decentralised systems of management of natural resources and to create the basis for equitable sharing of benefits of commercial utilisation of folk knowledge of uses of biodiversity. The documents bring together important locality specific information on biodiversity resources and ecological processes affecting them. They lead to recognition of conservation oriented local practices such as protection of sacred groves. They help mobilise local communities to prudently manage local biodiversity resources in ways that would promote social justice. It is however important to recognise that not all folk knowledge may be valid, nor all folk practices wise, and to create systems of careful assessment of the material. There are many encouraging signs globally, as well as within India, such as the coming in force of the Convention on Biological Diversity, forces promoting decentralised democratic systems of governance and institutions of co-management of natural resources which suggest that programmes like PBR will have an important role to play in promoting conservation, sustainable use and equitable sharing of benefits of biodiversity resources in the coming decades.  相似文献   

4.
城市化对周边土壤资源与环境的影响   总被引:37,自引:1,他引:37  
城市化快速发展对土壤资源产生巨大压力。因而对粮食安全与环境生态健康带来严峻挑战,作为一种非再生性自然资源,土壤的各种功能在城市化过程中强烈的人为活动影响下转化,演变和消失,那么,寻求城市化过程中土壤资源的可持续利用,在环境友好的模式下协调土壤自然生态与社会经济发展,最大限谋发挥土壤生态,生产和社会,经济功能,也是城市化快速发展的重要前提,也是最终实现可持续城市目标的基础。  相似文献   

5.
At the nexus of watersheds, land, coastal areas, oceans, and human settlements, river delta regions pose specific challenges to environmental governance and sustainability. Using the Amazon Estuary-Delta region (AD) as our focus, we reflect on the challenges created by the high degree of functional interdependencies shaping social–ecological dynamics of delta regions. The article introduces the initial design of a conceptual framework to analyze delta regions as coupled social–ecological systems (SES). The first part of the framework is used to define a delta SES according to a problem and/or collective action dilemma. Five components can be used to define a delta SES: social–economic systems, governance systems, ecosystems-resource systems, topographic-hydrological systems, and oceanic-climate systems. These components are used in association with six types of telecoupling conditions: socio-demographic, economic, governance, ecological, material, and climatic-hydrological. The second part of the framework presents a strategy for the analysis of collective action problems in delta regions, from sub-delta/local to delta to basin levels. This framework is intended to support both case studies and comparative analysis. The article provides illustrative applications of the framework to the AD. First, we apply the framework to define and characterize the AD as coupled SES. We then utilize the framework to diagnose an example of collective action problem related to the impacts of urban growth, and urban and industrial pollution on small-scale fishing resources. We argue that the functional interdependencies characteristic of delta regions require new approaches to understand, diagnose, and evaluate the current and future impacts of social–ecological changes and potential solutions to the sustainability dilemmas of delta regions.  相似文献   

6.
The goals of Integrated Water Resources Management (IWRM) can be achieved by embracing the principles of distributive governance, which places both customary and statutory water institutions on the same pedestal in the governance of water resources. As culture and traditions constitute intangible aspects of water resources management in rural Africa, the recognition of water governance systems grounded in local norms, which correspond better with the aspirations of local water users as against the expert-knowledge systems is desirable. Following the introduction of the statutory institutions in postcolonial Africa, customary institutions, which were once effective in regulating water resources became relegated to the background in those countries, including Botswana . Adopting a critical literature review approach, this article employs the concept of legal pluralism to analyze the institutional factors that create the disharmony between cultural and statutory water governance and management institutions. Findings indicate that water has been abstracted from its social nature and transformed into a tradable economic good. Ultimately, the local meanings and images encoded in water as a nature-given resource are overlooked, thus generating conflicts in water governance. The paper recommends the adoptions of legal pluralism under which water institutions need to embrace both customary and statutory institutions.  相似文献   

7.
Marine resource management programs face conflicting mandates: to scale-up marine conservation efforts to cover larger areas and meet national and international conservation targets, while simultaneously to downscale and decentralize management authority to resource users and local communities. These conflicting goals create tensions in marine resource management. This paper explores these tensions by presenting and evaluating the outcomes of a fisheries co-management program on the island of Pemba, Tanzania, where institutions and scale were configured and reconfigured under externally funded programs to improve marine conservation through co-management. The initial institutional arrangements for co-management supported a functioning system to protect marine resources, ensure fishermen’s access, and distribute tourism revenues. However, a subsequent push to scale-up marine management reconfigured institutional arrangements and power in a more hierarchical and potentially weaker system. With the expansion of the co-management program, protected area coverage, financial resources, and the number of community organizations created for fisheries co-management expanded tremendously; however, community participation in marine management decreased, and the fishermen’s association previously involved in co-management dissolved. Several factors contributed to this outcome: inadequate time to solidify co-management institutions and arrangements, diverse resource users inexperienced with local management, a sudden and substantial new source of funding, and political pressures to restructure marine management. Rather than focusing primarily on expanding coverage and devolving authority, it is important to adapt co-management arrangements to the local contexts in which they operate.  相似文献   

8.
Conditions for successful common-pool resources management institutions have been systematized by Elinor Ostrom as a set of “design principles for robust governance”. The comparison of two attempts to developing a local informal managing institution for shrimp trawling, 30 years apart (the late 1970s and 2010 attempts), and in the same community (therefore, the same socioecological system—SES) in Southern Brazil, provides a convenient ground to test the hypothesis that the degree of success of each attempt is related to the degree of adherence to Ostrom’s principles. Moreover, the comparison allows investigating how conditions and changes in the SES affect management institutions. Our institutional analysis showed that the 1970s attempt followed a local rule that best fitted almost all principles, which may explain its relative success and longer-lasting activity. However, changes such as the emergence of new technologies and increased fishing activity gradually led to an erosion of the local rule. A low level of group cohesion, regional socioeconomic changes, increased fishing effort, and lack of legal provisions for fishers to develop local managing institutions were the main factors that led to institutional failure in the two evaluated attempts. Additionally, the lack of ability to adapt to changing conditions weakened the continuity of the management regime. Although Brazil has created new fishery co-management policies, strategies to enable institutions at local levels are urgently needed for improved performance.  相似文献   

9.
水资源、能源和粮食是人类生存发展的基础资源,三者之间的交互关系被称为“水-能源-粮食”纽带。中国水资源、能源和粮食(耕地)资源时空分布不匹配,影响资源流动效率。随着资源供需矛盾加剧,资源管理方式亟需从“单资源”规划向“多资源”协同转变,因此,开展“水-能源-粮食”复合系统适配性评估对推动多资源协同管理具有重要意义。本文引入共生理论,构建“水-能源-粮食”系统共生架构,提出区域“水-能源-粮食”系统适配概念,将“水-能源-粮食”系统适配性分解为稳定性、协调性和可持续性,基于压力-状态-影响-响应(PSIR)模型构建适配性评估指标体系,对2000—2016年我国区域“水-能源-粮食”系统适配性进行综合评估。研究表明:①可持续性对“水-能源-粮食”复合系统适配性影响最大,协调性是适配性提升的短板,稳定性是适配性的重要基础。②我国“水-能源-粮食”复合系统的整体适配性、协调性、可持续性水平呈上升趋势,增长速度先快后慢,稳定性指数小幅波动,趋于平稳。③我国“水-能源-粮食”复合系统适配性时空分异特征明显,东北、东部地区的适配性水平相对较高,主要呈上升趋势;中部、西部地区的适配性水平相对较低,主要呈下降趋势。根据评估结果,提出以下建议:①加强水资源、能源、农业、土地等多部门协同,增加科技、水利、能源等方面投资力度,协调水-能源、水-粮食和能源-粮食关系,提高水资源、能源和粮食系统之间转化效率。②引导自然资源从富集区域向匮乏区域流动,引导高端产业、先进技术和投资等社会资源从发达地区向自然资源富集区域转移,缓解资源匮乏区供需矛盾,提高资源附加值,促进区域协同发展。  相似文献   

10.
The urgency of managing marine resources is based on the fact that half of the world stocks are fully exploited, excluding those stocks that are already depleted. Artisanal fisheries in Brazil, both inland and coastal, are responsible for about half of the country’s catches. Therefore, management of local artisanal fisheries is a necessity that provides an additional benefit, considering the observation that decentralization and the use of local ecological knowledge (LEK) in management have given better results than centralized, top-down management. In this study, a third system of knowledge–based on practice and training–is built from the local and scientific systems of knowledge, and a method to accomplish practical steps in local management is shown. Four elements are considered for the process of linking systems towards management: (1) an understanding of the natural environment of the fishery and on the use of natural resources by locals; (2) the knowledge of the marine area used by fishers, i.e., location of fishing spots for each species; (3) the understanding of fisher behavior, e.g., using tools from optimal foraging theory; and (4) the knowledge fishers have of the biology and ecology of species and their LEK, based on studies of the ethnobiology, ethnoecology, and ethnotaxonomy of fish. Considering the availability of publications on topics 1 and 2, illustrative cases are shown using optimal foraging models in Itaipu Beach, Rio de Janeiro and São Paulo Bagre, Cananéia, São Paulo, and using common snook, Centropomus undecimalis, as an example for a target species. Finally, local programs including training courses using both scientific and local knowledge are proposed within coastal artisanal fisheries.  相似文献   

11.
中国生态工业园初探   总被引:23,自引:1,他引:22  
工业化是中国实现现代化与可持续发展的必经阶段 ,但面临着严重的资源与环境问题。本文总结了世界生态工业园的理论与实践 ,分析了中国建立生态工业园的必要性 ,并从时间维、空间维、机制维、职能维等方面探讨了加强中国生态工业园的建设。  相似文献   

12.
Coastal marine eutrophication assessment: a review on data analysis   总被引:2,自引:0,他引:2  
A wide variety of data analysis techniques have been applied for quantitative assessment of coastal marine eutrophication. Indicators for assessing eutrophication and frequency distributions have been used to develop scales for characterizing oligotrophy and eutrophication. Numerical classification has also contributed to the assessment of eutrophic trends by grouping sampling sites of similar trophic conditions. Applications of eutrophication assessment based on Principal Component Analysis and Multidimensional Scaling have also been carried out. In addition, the rapid development of Geographical Information Systems has provided the framework for applications of spatial methods and mapping techniques on eutrophication studies. Satellite data have also contributed to eutrophication assessment especially at large scale. Multiple criteria analysis methods can integrate eutrophication variables together with socio-economic parameters providing a holistic approach particularly useful to policy makers. As the current concept of eutrophication problems is to be examined as part of a coastal management approach, more complex quantitative procedures are needed to provide a platform useful for implementation of environmental policy. The present work reviews methods of data analysis used for the assessment of coastal marine eutrophication. The difficulties in applying these methods on data collected from the marine environment are discussed as well as the future perspectives of spatial and multiple criteria choice methods.  相似文献   

13.
采用种植模式对县级尺度的作物进行空间配置,能够较好地解决作物空间布局中熟制比例不当、茬口不适宜等问题。种植制度空间布局优化的目的在于通过合理配置种植模式的空间位置,以充分利用并保护当地的自然资源和社会资源。其本质是一种具有自然、社会、耕作制度等多方面影响因素及空间特征的组合优化问题。传统的优化算法解决具有空间特征的组合优化问题效率很低,或者难以解决该类问题。遗传算法是一种新的智能优化算法,通过模拟自然进化过程,利用简单的编码技术和遗传操作高效地解决复杂的组合优化问题。提出了一种以GIS为平台,遗传算法为优化模型的县域种植制度空间布局优化方法。  相似文献   

14.
基于DPSIR概念模型的农业可持续发展宏观分析   总被引:25,自引:0,他引:25  
DPSIR概念模型继承了PSR模型的优点,是分析评估环境系统有效工具,本文以DPISR概念模型为指导,系统分析了农业业系统的现状,塑造这一现状的驱动力和压力,探讨了农业对于互不干涉和人类健康的影响,以及实现农业可持续发展的政策响应,目的是建立农业可持续发展的指标体系和实现农业资源的优化配置,本文认为DPSIR概念模型有利于分析复杂系统的因果关系,能有效整合资源开发,环境保护和经济发展。  相似文献   

15.
水资源脆弱性分析是确立区域水资源问题和调控水安全的重要环节。雅鲁藏布江流域水资源丰富,但时空分布不均,洪旱灾害频发、经济欠发达,导致水资源脆弱性明显。基于1965~2014年的气象月尺度数据,分析流域降水分布特征、确定其干湿分区;采用标准化降水指数认识流域洪旱灾害时空分布状况,并从洪旱灾害及沙漠化、供用水及用水效益、调控能力3个方面构建流域水资源脆弱性指标评价体系,运用熵权法分析时空差异特征。结果表明:(1)流域多年平均降水量458 mm,空间上从西北向东南方向递增,上游日喀则市大部、中游拉萨市和山南地区属于中等干旱区,下游林芝市为湿润区;(2)流域内4区/市均易发生春旱和盛夏洪涝,干旱灾害发生率高于洪涝灾害发生率,拉萨市和林芝市易发生干旱重灾,山南地区易发生洪涝重灾;(3)流域及4区/市在2005~2014年间水资源脆弱性均呈下降趋势,山南地区、林芝市的降幅大于日喀则市、拉萨市;(4)流域水资源脆弱性的主导因子为干旱、洪涝、用水效益、管理能力、地区生产总值。流域水资源脆弱性特征为由洪旱灾害主导、调控能力弱、水资源利用效率低。  相似文献   

16.
Small-scale fisheries in coral reef areas support the livelihoods of millions of people worldwide. Anthropogenic impacts such as overfishing and climate change increasingly threaten both the reef ecosystem and the livelihood security of the people that depend on the reefs. Adaptive management strategies are needed to adequately deal with these threats, but they require an understanding of the underlying drivers, which often originate and act on multiple levels. Using a social-ecological system approach, the coral reef fishery of the Spermonde Archipelago in South Sulawesi/Indonesia is assessed to identify key drivers and strategic leverage points for management. Under the influence of international markets and technological changes, several export-oriented fisheries have developed in the area that led to distinct subsequent peaks in fishing activity in a pattern of sequential marine resource exploitation. In response to stressors such as seasonality and overfishing of individual locations or species, a number of coping strategies have developed locally. These include extensive borrowing from fishing patrons, diversification of fishing methods, fishing migrations, and the crafting of local institutions to regulate fishing activity. However, the coping strategies hinder, and even decrease, the capacity of the system to adapt to future stressors and undermine the sustainability of the fishery. Potential strategies that target different levels of the fishery system in order to strengthen adaptive management are identified.  相似文献   

17.
The composition and abundance of marine biota in Israeli marine ecosystems are affected by natural and anthropogenic pressures, including blooms of non-indigenous jellyfish and overfishing. While overfishing is itself a major stressor of fish stocks, it appears that jellyfish may be outcompeting fish for scarce planktonic food resources. Beyond this direct impact on fisheries, jellyfish–ecosystem interactions are also important because of the disturbance they cause to multiple users of marine and coastal resources. This paper documents the concurrent changes in the composition of marine biotic communities, including jellyfish proliferation and dwindling stocks of endemic, commercially valuable fish and the rising rate of bottom trawling in Israeli fisheries. The capacity to deal directly with jellyfish is limited by lack of knowledge about their ecology. Therefore, we suggest that bolstering fish stocks and increasing their competitive advantage in the food web may be instrumental in limiting jellyfish blooms. Coordination of fishing and conservation policies is recommended, as are modifications to marine waste management and deployment of submerged artificial substrates.  相似文献   

18.
Systems of Knowledge: Dialogue, Relationships and Process   总被引:1,自引:0,他引:1  
During the last 20 years, the existence of rich systems of local knowledge, and their vital support to resource use and management regimes, has been demonstrated in a wide range of biological, physical and geographical domains, such as agriculture, animal husbandry, forestry and agroforestry, medicine, and marine science and fisheries.Local knowledge includes empirical and practical components that are fundamental to sustainable resource management. Among coastal-marine fishers, for example, regular catches and, often, long-term resource sustainment are ensured through the application of knowledge that encompasses empirical information on fish behaviour, marine physical environments, fish habitats and the interactions among ecosystem components, as well as complex fish taxonomies. Local knowledge is therefore an important cultural resource that guides and sustains the operation of customary management systems. The sets of rules that compose a fisheries management system derive directly from local concepts and knowledge of the resources on which the fishery is based.Beyond the practical and the empirical, it is essential to recognise the fundamental socio-cultural importance of local knowledge to any society. It is through knowledge transmission and socialisation that worldviews are constructed, social institutions perpetuated, customary practices established, and social roles defined. In this manner, local knowledge and its transmission, shape society and culture, and culture and society shape knowledge.Local knowledge is of great potential practical value. It can provide an important information base for local resources management, especially in the tropics, where conventionally-used data are usually scarce to non-existent, as well as providing a shortcut to pinpoint essential scientific research needs. To be useful for resources management, however, it must be systematically collected and scientifically verified, before being blended with complementary information derived from Western-based sciences.But local knowledge should not be looked on with only a short-term utilitarian eye. Arguments widely accepted for conserving biodiversity, for example, are also applicable to the intellectual cultural diversity encompassed in local knowledge systems: they should be conserved because their utility may only be revealed at some later date or owing to their intrinsic value as part of the world's global heritage.At least in cultures with a Western liberal tradition, more than lip-service is now being paid to alternative systems of knowledge. The denigration of alternative knowledge systems as backward, inefficient, inferior, and founded on myth and ignorance has recently begun to change. Many such practices are a logical, sophisticated and often still-evolving adaptation to risk, based on generations of empirical experience and arranged according to principles, philosophies and institutions that are radically different from those prevailing in Western scientific circles, and hence all-but incomprehensible to them. But steadfastly held prejudices remain powerful.In this presentation I describe the 'design principles' of local knowledge systems, with particular reference to coastal-marine fishing communities, and their social and practical usefulness. I then examine the economic, ideological and institutional factors that combine to perpetuate the marginalisation and neglect of local knowledge, and discuss some of the requirements for applying local knowledge in modern management.  相似文献   

19.
The climate change and natural hazard communities have developed the notion of vulnerability and associated methods for its assessment in parallel, with only limited interaction. What are the underlying reasons for this diversity; is there advantage in greater synergy? If yes, what are the pathways through which greater integration could be fostered? This paper discusses these issues using vulnerability studies in coastal areas to describe gaps between climate change and natural hazard approaches, and investigates scope for mutual learning and collaboration in the development of methodologies for vulnerability assessment. An overview of methods highlights the separation between climate change and natural hazard approaches. The main differences identified, beyond formal divergences in terminology, are linked to: process (stress vs shock), scale (temporal, functional and spatial), assessment approach (statistical vs prospective) and levels of uncertainty. We argue that the underlying source of divergence is the initial difference of purpose, one being identification of climate change adaptation pathways, the other being disaster risk reduction. In this context, the notion of vulnerability and its expression through assessment studies is the focal point connecting both domains. Indeed, the ongoing and active development of vulnerability concepts and methods have already produced some tools to help overcome common issues, such as acting in a context of high uncertainties, taking into account the dynamics and spatial scale of a social-ecological system, or gathering viewpoints from different sciences to combine human and impact-based approaches. Based on this assessment, this paper proposes concrete perspectives and possibilities to benefit from existing commonalities in the construction and application of assessment tools.  相似文献   

20.
区域可持续发展生态评估的能值分析研究进展与展望   总被引:10,自引:0,他引:10  
可持续发展的生态评估是当前国际生态经济学与可持续发展研究的前沿问题之一,能值分析以能量为单位定量评估人类生态经济系统中各种生态流的可持续性,是一个重要的研究方向。尽管能值分析定量评价了自然环境资源对人类生态经济系统的贡献.克服了传统能量与经济分析方法的诸多缺憾,但在理论方法上仍存在不足之处。综合国内外区域能值分析的最新进展。能值转换率的确定、能值分析与空阃格局分析的整合、能值成本价值论与市场(使用)价值论的整合、可持续性阈值等问题将是下一步的研究重点。  相似文献   

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