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排序方式: 共有467条查询结果,搜索用时 93 毫秒
81.
分析了江苏生物多样性保护现状,解读了省委办公厅、省政府办公厅《关于进一步加强生物多样性保护的实施意见》,主要涵盖完善政策法规、优化空间格局、提升系统稳定性、构建监测评估体系、提升安全管理水平、创新开发利用机制、严格执法监督评估、推动公众参与等8大工作任务,加强生态岛试验区、生态安全缓冲区等10大领域政策创新,整体提升全省生态系统质量。  相似文献   
82.
The Oxford Commission on Sustainable Consumption aims to promote debate and action to achieve sustainable consumption. It has met four times since it was established in 1999. Commission members have undertaken a number of projects around the world, working with communities to explore pathways to more sustainable consumption. This paper summarises the Commission’s progress and the messages emerging from its work. Current consumption trends are supported by a number of social trends, including individualisation, the spread of the market ethos, urbanisation, globalisation, and the increasing awareness of risk and uncertainty. However, these trends contain the seeds of their own limitation. In particular, increasing discourse about ethics and social goals may be the key to a shift towards more sustainable consumption.  相似文献   
83.
84.
Marine bacterial community plays a vital role in the formation of the hypoxia zone in coastal oceans. Yet, their dynamics in the seasonal hypoxia zone of the Bohai Sea(BHS) are barely studied. Here, the 16S r RNA gene-based high-throughput sequencing was used to explore the dynamics of their diversity, structure, and function as well as driving factors during the gradual deoxygenation process in the BHS. Our results evinced that the bacterial community was dominated by Proteobacteria, followed b...  相似文献   
85.
以黑龙江黑土为对象,研究了冻融循环及有机肥配施量对黑土中镉形态分布的影响。对配施不同有机肥的土壤样品进行5次冻融循环,采用电感耦合等离子质谱仪(ICP-MS)分析土壤样品中镉的赋存形态。结果表明,冻融循环数及有机肥的配施有助于降低黑土中的总镉量;冻融循环会促使黑土中的镉由交换态、碳酸盐结合态、有机结合态向铁锰氧化物结合态和残渣态转化,而增加有机肥配施量会使黑土中的镉由交换态向其他形态转化。因此,冻融循环及有机肥配施有助于降低土壤中镉的生物有效性,进而降低其环境风险。  相似文献   
86.
从我国目前节能减排的形势出发,结合几大高污染、高能耗行业的环保现状,给出了能够实现环保与节能减排的总体原则并重点提出了相应的宏观政策建议。  相似文献   
87.
The growing water stress both in terms of water scarcity and quality deterioration promotes the development of reclaimed water as a new water resource use. This paper reviewed wastewater reuse practices in China, and the opportunities and challenges of expanding reclaimed water use were analyzed. Rapid urbanization with the increasing of water demand and wastewater discharge provides an opportunity for wastewater reuse. The vast amount of wastewater discharge and low reclaimed water production mean that wastewater reuse still has a great potential in China. Many environmental and economic benefits and successful reclamation technologies also provide opportunities for wastewater reuse. In addition, the overall strategy in China is also encouraging for wastewater reuse. In the beginning stage of wastewater reclamation and reuse, there are many significant challenges to expand wastewater reuse in China including slow pace in adopting urban wastewater reuse programs, the establishment of integrated water resources management framework and guidelines for wastewater reuse programs, incoherent water quality requirements, the limited commercial development of reclaimed water and the strengthening of public awareness and cooperation among stakeholders.  相似文献   
88.
Calls for supporting sustainability through more and better research rest on an incomplete understanding of scientific evidence use. We argue that a variety of barriers to a transformative impact of evidence arises from diverse actor motivations within different stages of evidence use. We abductively specify this variety in policy and practice arenas for three actor motivations (truth-seeking, sense-making, and utility-maximizing) and five stages (evidence production, uptake, influence on decisions, effects on sustainability outcomes, and feedback from outcome evaluations). Our interdisciplinary synthesis focuses on the sustainability challenge of reducing environmental and human health risks of agricultural pesticides. It identifies barriers resulting from (1) truth-seekers’ desire to reduce uncertainty that is complicated by evidence gaps, (2) sense-makers’ evidence needs that differ from the type of evidence available, and (3) utility-maximizers’ interests that guide strategic evidence use. We outline context-specific research–policy–practice measures to increase evidence use for sustainable transformation in pesticides and beyond.  相似文献   
89.
The present development plan system in Scotland began in 1975. Its origins and purpose are discussed. Progress in the submission and adoption/approval of local and structure plans and in reviewing these plans is outlined. Performance to date is assessed and means of improvement are suggested, in relation to timeliness, transparency, scope and quality.  相似文献   
90.
Handmer JW 《Disasters》1985,9(4):279-285
In 1977 the Government of New South Wales introduced a flood prone lands policy which attempted to break with the past emphasis on structural works. Cornerstones of the policy were the preparation of floodplain maps, and use of the 1:100 (100 year or 1%) flood to delineate floodplains and 1:20 flood for floodway definition. The fiscal and regulatory elements of the policy were to be applied more or less uniformly within the two zones. At first there was little effective opposition to the program, but this changed when large areas of Sydney, which had not been inundated since development, were mapped. Local government concern over issues of legal liability led to decisions which in turn prompted opposition to the policy from residents' action groups and property development interests. A perceived drop in property values provided the main motivation for action by residents. This pressure for change, which intensified just before the 1984 state election, saw the policy overturned.
The new policy gives local government greater responsibility for floodplain management. State authorities have withdrawn from floodplain mapping, although technical advice will continue to be provided, and there are no longer any uniform floodplain or floodway definitions. Policy implementation is to be guided by a Manual which attempts to define flood hazard in terms of both physical and social criteria.  相似文献   
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