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1.
廖中举  张曼婷 《生态学报》2020,40(9):3144-3153
生态创新是实现绿色发展的重要举措。为了深入了解生态创新的研究进展,基于Web of Science引文数据库,系统收集了2007—2018年间615篇符合生态创新主题的论文,采用文献计量、内容分析等方法对文献进行了科学和系统分析,构建了生态创新研究的整合框架。结果发现:生态创新的研究基础围绕“基础理论、竞争优势、环境政策工具”三个方面,其研究热点包括生态创新的绩效评估、生态创新与企业绩效的关系,以及生态创新的驱动因素。最后,基于分析结果,本研究勾勒出了生态创新领域未来的研究方向。  相似文献   

2.
Eco-efficiency and Its xsTerminology   总被引:1,自引:0,他引:1  
Eco-efficiency has been defined as a general goal of creating value while decreasing environmental impact. Leaving out the normative part of this concept, the empirical part refers to a ratio between environmental impact and economic cost or value. Two basic choices must be made in defining practical eco-efficiency: which variable is in the denominator and which is in the numerator; and whether to specify environmental impact or improvement and value created or cost. Distinguishing between two situations, the general one of value creation and the specific one of environmental improvement efforts, and leaving the numerator-denominator choice to the user, as diverging practices have developed, four basic types of ecoefficiency result: environmental intensity and environmental productivity in the realm of value creation; and environmental improvement cost and environmental cost-effectiveness in the realm of environmental improvement measures.  相似文献   

3.
As pollution emitters and energy users, firms are important causes of environmental problems, making it increasingly vital for them to strengthen their environmental management and information disclosure policies. However, firms doubt whether it pays to be green and whether it is worthwhile to disclose their environmental information, and there are hot debates on these questions in the literature. This paper analyzes the relationships among corporate environmental performance, environmental information disclosure, and financial performance in China, which witnessed rapid growth at the price of environmental degradation. With 950 observations from 475 Chinese listed companies between 2013 and 2014, we find a U-shaped nonlinear relationship between corporate environmental performance and environmental disclosure, an insignificant relationship between environmental performance and financial performance, and a negative relationship between environmental disclosure and financial performance, which is different from most findings in developed countries. The aforementioned results imply that Chinese firms have few motivations to disclose environmental information or improve environmental performance; therefore, mandatory disclosure of environmental information is necessary, and proper environmental policy should be made to punish environmental violations and encourage better environmental performance.  相似文献   

4.
A Framework for Quantified Eco-efficiency Analysis   总被引:5,自引:0,他引:5  
Eco-efficiency is an instrument for sustainability analysis, indicating an empirical relation in economic activities between environmental cost or value and environmental impact. This empirical relation can be matched against normative considerations as to how much environmental quality or improvement society would like to offer in exchange for economic welfare, or what the trade-off between the economy and the environment should be if society is to realize a certain level of environmental quality. Its relevance lies in the fact that relations between economy and environment are not self-evident, not at a micro level and not at the macro level resulting from micro-level decisions for society as a whole. Clarifying the why and what of eco-efficiency is a first step toward decision support on these two aspects of sustainability. With the main analytic framework established, filling in the actual economic and environmental relations requires further choices in modeling. Also, the integration of different environmental effects into a single score requires a clear definition of approach, because several partly overlapping methods exist. Some scaling problems accompany the specification of numerator and denominator, which need a solution and some standardization before eco-efficiency analysis can become more widely used. With a method established, the final decision is how to embed it in practical decision making. In getting the details of eco-efficiency better specified, its strengths, but also its weaknesses and limitations, need to be indicated more clearly.  相似文献   

5.
与环境管理有关的生态学研究展望   总被引:3,自引:2,他引:1  
当今世界 ,自然资源和环境管理间有许多问题需要解决。决策者们不断寻求能够实现环境质量改善和有效、持续利用资源的途径和手段。而环境资源的有限性和稀缺性也决定了必须进行有效的环境管理 ,这就需要借助生态学知识作出有效可行的管理决策 [10 ,11]。然而 ,在我国目前的条件下 ,生态学家和环境管理人员之间通常缺乏联系 ,在许多方面难以达成共识。其原因 ,既有人为造成的 ,也有历史发展的原因。在解决有关生态保护、环境管理和可持续发展之间的种种问题时 ,对生态学研究所处的地位和作用缺乏理论上的探索。另一方面 ,生态系统管理比我们…  相似文献   

6.
The actual evidence observed in studies of LEK (local environmental knowledge) is nearly always talk about the environment, or what we refer to as LET (local environmental talk), with the claim of studying LEK usually being built upon the implicit assumption that talk about the environment is the expression of knowledge about the environment. We suggest that it is critically important for researchers to question this assumption, especially when the distinction between LET and LEK is also emphasized by local people themselves. In the case we present here, residents of small fishing villages on the Northern Peninsula of Newfoundland are routinely skeptical about what other local residents say about the environment; that is, they engage in LES (local environmental skepticism). We suggest that paying explicit attention to LES can help distinguish LEK from LET.  相似文献   

7.
In "The Grand Objectives: A Framework for Prioritized Grouping of Environmental Concerns in Life-Cycle Assessment". Thomas Graedel (1997) proposed an elegant schema for prioritizing environmental concerns. It operates at three levels: grand objectives, environmental concerns, and targeted activities. I argue that consensus is most likely on the first and third levels, but that the middle level, environmental concerns, is more problematic. Even among individuals who agree on general societal directions, strong differences of views can occur regarding specific technologies. I illustrate by applying Graedel's system to his "radionuclide" category, under his first grand objective (human species extinction). I use the example of nuclear waste to illustrate how values are inextricably involved at the "environmental concerns" level. My analysis suggests ways to enhance the utility of Graedel's useful system.  相似文献   

8.
我国环境功能评价与区划方案   总被引:7,自引:0,他引:7  
我国地区间自然环境和社会经济发展差异悬殊,主体发展功能和环境功能定位各不相同。从环境功能的角度出发,统筹考虑各环境要素,建立基于环境功能区划的环境管理制度具有重要的理论和现实意义。采用RS与GIS技术的空间评价方法,构建了基于环境功能评价和主导因素法的环境功能区划技术体系,在对全国自然生态环境及社会经济发展科学评估的基础上,充分衔接现有的相关区划与规划,明确全国环境功能区划方案。国土面积的53.2%划为自然生态保留区和生态功能保育区,为国民经济的健康持续发展提供生态安全保障;国土面积的46.8%划为食物环境安全保障区、聚居环境维护区和资源开发环境引导区,主要从事农业生产、城镇化和工业化开发以及资源开发利用,是国民经济和社会发展活动的主要集中地区,重点维护人群健康。环境功能区划是改变环境保护目标制定和考核中"一刀切"现象的基础性研究,实行环境分区管理和分类指导,促进实现环境保护管理战略转型。  相似文献   

9.
环境雄激素的危害、来源与环境行为   总被引:3,自引:0,他引:3  
韩伟  李艳霞  杨明  李帷  林春野  张丰松  熊雄 《生态学报》2010,30(6):1594-1603
内分泌干扰物(EDCs)因低剂量即可导致严重的生理效应而成为研究的热点,环境雄激素就是典型的内分泌干扰物之一,它主要来源于畜禽粪尿的排放以及造纸厂和城市污水处理厂处理不彻底的废水排放,污染源的连续性排放致使环境雄激素物质在各类环境介质中被不断检出,并导致一些地区出现鱼类的雄性化现象,对环境健康和生态安全构成严重威胁。综述了环境雄激素的暴露危害、主要来源以及环境雄激素在不同环境中的浓度水平和分布特征,介绍了环境雄激素的分析检测手段,阐述了环境雄激素在环境中的迁移、吸附、降解等过程,并对环境雄激素的研究进行了展望。  相似文献   

10.
【目的】开发一个收集环境微生物信息并能快速合成环境治理微生物群体的网站。【方法】在"中国科学院战略生物资源服务网络计划"的支持下,依托资源丰富的环境微生物实体保藏库,完善菌株功能、环境适应及生理生化相关信息,建立了环境微生物资源信息库(网址:http://www.envimicrobe.com)。【结果】该信息库主要包含"资源库"、"群体合成系统"两个模块,其中资源库收集整合了环境微生物实体库中菌株的功能特性、环境适应性、生理生化特性等信息;群体合成系统则将这些功能菌特征信息与目标污染治理对象的污染物信息、环境条件参数信息相匹配,快速合成针对性强的环境治理微生物群体,研制环境微生物复合菌剂产品。【结论】该信息库的应用,不仅可以帮助研究者快速获取相关微生物资源信息,高效快速地开展环境微生物相关研究,而且也将会促进环境微生物资源的产业化推广应用。  相似文献   

11.
黄涵年  郭江峰 《生命科学》2013,(11):1115-1120
MicroRNA(miRNA)是一类长为20~24nt的非编码单链小分子RNA,主要存在于真核生物中,具有组织特异性、无开放阅读框等特点,在转录或翻译水平调控基因表达,参与细胞增殖、分化、凋亡,并与炎症、肿瘤等疾病发生、发展密切相关。环境毒理学研究表明,当生物暴露于环境化学物质时,会引起相关miRNA表达发生变化,进而导致其靶基因表达发生改变。因此,有必要明确环境化学物质、miRNA和相关靶基因三者问的作用关系。在环境毒理学研究和环境监测中,miRNA可作为识别环境中化学物质基因毒性和致癌性的生物标记物,并可用于预测环境化学物质对生物体的毒性。  相似文献   

12.
严岩  孙宇飞  刘建昌  赵景柱  刘峰 《生态学报》2008,28(12):5826-5832
基于对四川汶川地震中受灾严重的51个县1271个乡镇的水环境容量估算,对不同地域的环境适宜性进行评价,旨在为震区恢复重建的人口、经济布局提供一定科学依据。水环境容量选择COD和NH3-N两个指标进行评价,首先利用降雨量、径流系数和径流深等参数评价单元的径流量,再根据水环境质量标准、水体自然背景值等参数估算环境容量;进而在水环境污染胁迫程度计算的基础上,进行了环境适宜性评价。结果显示:水环境容量区域性差异明显,北部三省交界区域的乡镇容量较高、东南部四川盆地边缘和内部区域的乡镇容量较高、西部的山区乡镇环境容量低;西南部污染胁迫程度较低,环境适宜性较高;西部自然保护区胁迫程度较大,环境适宜性较低;成都平原附近县域胁迫较大,环境适宜性较低;环境适宜性区域性明显,但也呈现出一定的分散性。  相似文献   

13.
The history of environmental decision-making in the United States is primarily one of antagonism, conflict, and litigation. Four sectors of American society are typically at odds over why and how to solve environmental problems—government regulators, businesses proponents, environmental advocates, and members of affected communities. Dissimilar worldviews are at the heart of most environmental disputes, and people in the four sectors tend to have diverse perspectives and philosophies that affect how they interpret and respond to environmental issues. To promote integrated, cost-effective decisions, the public health paradigm (prevention first, intervention second, treatment third), as embodied in the Precautionary Principle and the concept of Sustainable Development, should be mutually adopted as a joint framework for prioritizing solutions to pressing environmental problems. The core public health principle of prevention first is a simple yet powerful tenet that can help foster better environmental choices that are more effective, efficient, and equitable.  相似文献   

14.
Investigating the biological mechanisms linking environmental variability to fish production systems requires the disentangling of the interactions between habitat, environmental adaptation and fitness. Since the number of environmental variables and regulatory processes is large, straightening out the environmental influences on fish performance is intractable unless the mechanistic analysis of the 'fish-milieu' system is preceded by an understanding of the properties of that system. While revisiting the key points in our currently poorly integrated understanding of fish ecophysiology, we have highlighted the explanatory potential contained within Fry's (Fry 1947 Univ. Toronto Stud. Biol. Ser. 55, 1-62) concept of metabolic scope and categorization of environmental factors. These two notions constitute a pair of powerful tools for conducting an external (at the emerging property level) analysis of the environmental influences on fish, as well as an internal (mechanistic) examination of the behavioural, morphological and physiological processes involved. Using examples from our own and others work, we have tried to demonstrate that Fry's framework represents a valuable conceptual basis leading to a broad range of testable ecophysiological hypotheses.  相似文献   

15.
This paper is an inquiry into the circumstances under which the voluntary provision of environmental public goods might be sensible from a firm's point of view. If environmental externalities were the only departure from the economic assumptions of perfect competition, and if no firms had preferential access to superior (low-cost) stocks of natural resources, firms that volunteered to internalize costs could not survive. But because externalities coexist with other departures from the competitive paradigm, such as asymmetric information and oligopoly competition, firms may find it in their shareholders' interests to provide environmental public goods to a greater degree than required by law. A number of firms, especially in Europe and North America, assert that they are pursuing "beyond-compliance" environmental policies. From the perspective of a firm's shareholders, it makes sense to pursue such policies if they increase the firm's expected value or if they appropriately manage business risk.
This paper discusses economically rational explanations for such policies. It analyzes the ways in which a firm's chances of financial success in pursuing any one of them are influenced by the firm's market position and organizational capabilities and by the basic structure of the industry in which it competes.  相似文献   

16.
Given near unanimity in the environmental and industrial communities about the need for a new generation of environmental technology, the policy process unfortunately lags behind in moving toward this objective. This article examines causes and remedies for this gap in the context of American environmental policy. U.S. environmental laws continue to be pervaded by structural biases against new technology, and the complexity of their administration exacerbates the problem. Within the last few years, several important reform initiatives have arisen from inside the regulatory community; however, these can only go so far, given the current statutory framework Congress, too long quiescent, needs to become involved. A legislative reform package is proposed consisting of four main elements: a legislative mandate that makes promotion of technological innovation an explicit environmental objective; elimination of structural features in current law that impede innovation; creation of a new framework for standard-setting and enforcement that puts every firm on a trajectory toward environmental and technological improvement; and enlisting regulation as a "demand-pull" for environmentally superior technology.  相似文献   

17.
Children are not little adults. They have unique patterns of environmental exposure and developmentally determined susceptibilities that increase their risk of disease following toxic environmental exposure. Evidence is accumulating that children's exposure to toxic chemicals in the environment is contributing to changing patterns of paediatric disease.  相似文献   

18.
People may express high concern for global warming or environmental degradation, but when forced to evaluate the severity of environmental threats in relation to other threats, environmental threats are pushed to the bottom of the list. The present study was based on the premise that prioritizing threats involves, inter alia, hierarchizing the threats according to their perceived temporal proximity and since environmental threats are perceived, relative to other threats, as more temporally distant, they rank low. Future orientation (FO) is an individual-difference variable that describes the tendency to take into account temporally distant considerations. We predicted that environmental threats would be evaluated as more severe by individuals who were more future-oriented. The strongest effect of FO was found to be on concern about global warming and environmental degradation. This indicated that environmental threats were perceived as temporally farthest and, not surprisingly, received the lowest priority. External security threat was a top-priority; its severity evaluation was uncorrelated to FO, indicating that it was perceived as temporally closest. These evaluations significantly affected environmental attitudes and behavior. The implications on promoting environmental behavior in the presence of ever-existing shorter-term existential threats are discussed.  相似文献   

19.
A survey of 36 fields across 11 farms in the North of England was conducted to record the plant species diversity of grassland communities under various base conditions. Data pertaining to topographical advantage, farm management strategy and soil type were also collected for each field site. The relationship between management inputs and base environmental conditions and the resultant diversity of flora were identified through ordination techniques. The results show a total of 111 species being observed across the sample and some expected relationship emerge, but they also suggest that complementary management techniques can have opposing or conflicting effects on species prevalence. The study argues that provision or use of such information should be paramount within environmental policy formulation where site-specific management plans are used to produce environmental goods.  相似文献   

20.
植物气孔导度的环境响应模拟及其尺度扩展   总被引:5,自引:0,他引:5  
气孔导度是衡量植物和大气间水分、能量及CO2平衡和循环的重要指标,探讨气孔导度与环境因子的关系及其模拟,以及气孔导度在叶片、冠层及区域尺度间的尺度转换及累积效应,对更好地认识植被与大气间的水热运移过程,合理评价植被在陆面过程中的地位和作用都具有重要意义。从植物气孔导度与环境因子的关系、气孔导度模拟以及尺度扩展三个方面,对前人的研究成果进行了概括总结。从叶片和冠层两个尺度出发,归纳总结了前人对于不同植物气孔导度与环境因子关系的研究成果,发现由于不同植物的遗传特性、测定时的环境、时间尺度的不同,以及未考虑各个环境因子的相互作用对气孔导度的影响,由此得到的气孔导度与环境因子之间的关系也不尽一致。对各单一环境因子与气孔导度的关系,给出了生理学解释,从根本上说明了环境因子变化对气孔导度的影响,而研究环境因子对气孔导度的综合影响时,应对各环境因子进行系统控制与同步观测。模拟计算植物气孔导度的模型主要有Jarvis模型和BWB模型两类,这些模型的模拟能力随着研究对象、试验区域、环境条件的改变而存在一定的差异,在具体使用时应结合实际情况选择最优模型进行模拟。除上述常用模型外,还总结了其他学者分别从不同角度提出的新的模型,对现有气孔导度模型进行了全面的总结。从叶片-冠层、冠层-区域两个方面归纳总结了前人关于气孔导度尺度扩展的研究成果,发现叶片-冠层的尺度扩展研究较成熟而冠层-区域的尺度扩展在模拟精度的验证方面存在困难。针对以下几个方面提出了今后气孔导度的研究重点:(1)结合研究对象所在的区域及环境条件,选择最优模型进行模拟;(2)综合考虑环境因子之间的相互作用及其对气孔导度的累积影响;(3)BWB模型与光合模型的耦合;(4)提高大尺度范围内的气孔导度模拟精度。  相似文献   

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