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161.
Catrien J.A.M. Termeer Art Dewulf G. Robbert Biesbroek 《Journal of Environmental Planning and Management》2017,60(4):558-576
Although transformational change is a rather new topic in climate change adaptation literature, it has been studied in organisational theory for over 30 years. This paper argues that governance scholars can learn much from organisation theory, more specifically regarding the conceptualisation of change and intervention strategies. We reconceptualise the divide between transformational change and incremental change by questioning the feasibility of changes that are concurrently in-depth, large scale, and quick; and the assumption that incremental change is necessarily slow and can only result in superficial changes. To go beyond this dichotomy, we introduce the conceptualisation of continuous transformational change. Resulting intervention strategies include (1) providing basic conditions for enabling small in-depth wins; (2) amplifying small wins through sensemaking, coupling, and integrating; and (3) unblocking stagnations by confronting social and cognitive fixations with counterintuitive interventions. These interventions necessitate a modest leadership. Governing transformational change thus requires transformation of the governance systems themselves. 相似文献
162.
当前,北京、上海等超大城市已经提出未来要建设全球城市或世界城市,把环境作为城市核心竞争力的主要指标。本文通过研究东京第二次世界大战后环境战略的演变,寻求不同环境战略阶段中,环境目标、管理及政策与经济、人口、能源和城市规划的关系,认为东京环境战略演变历程共分为六个阶段,总结了东京环境战略的成功经验,即科技创新中心是环境领域战略转型中心先天优势、全球环境治理网络枢纽建设促进环境战略转型、能源清洁是东京环境战略转型的关键、重大活动是东京城市环境问题解决的绝佳契机、公众参与为环境战略转型提供了强大的推动力,而城市空间优化与产业转移是东京环境战略转型的核心。 相似文献
163.
中日合作研究项目:酸沉降对陆地生态系统的影响及其控制对策的研究,于1990至1995年期间在中国重庆地区进行。本文是该项目最终研究结果主要方面的报导,包括大气污染和酸雨的状况,酸沉降对池塘、森林和土壤生态系统的影响以及大气污染和酸雨控制对策。该项研究为今后酸沉降生态监测的研究,打下了有力的基础。 相似文献
164.
研究了长江口水域纹缟虾虎鱼的繁殖生物学。结果如下:(1)纹缟虾虎鱼雌雄亲鱼间形态学特征具有差异,肥满度分别为347±036与217±052,体长/体高、体长/头长、头长/眼径、头长/眼间距等比值存在极显著差异;(2)纹缟虾虎鱼产卵期为3~7月份,盛产期为4~6月份。绝对生殖力平均为12 6892粒,体长相对生殖力平均为2069粒/mm;(3)纹缟虾虎鱼成熟的卵为球形,卵径0482~0606 mm,卵中油球数量10~200个,精子较小,由圆形头部和细长尾部(鞭毛)两个部分组成;(4)纹缟虾虎鱼产卵受精一般在洞穴内进行,而且雄鱼具有护卵习性;(5)纹缟虾虎鱼受精卵呈梨形或者梭形,卵膜端具有由粘丝组成的附着盘,动物极靠近附着盘。纹缟虾虎鱼人工催产与自然繁殖时的受精率分别为7858%与8384%。在17~25℃范围内,纹缟虾虎鱼胚胎均能孵出仔鱼,随着水温上升发育速度加快,温度与孵化时间呈正相关关系,有效积温为3 1283 h·℃。长江口水域生态环境变动可能对纹缟虾虎鱼繁殖及其资源量产生一定影响。 相似文献
165.
M. Talat Odman Yongtao Hu Armistead G. Russell Asude Hanedar James W. Boylan Patricia F. Brewer 《Journal of environmental management》2009,90(10):3155-3168
A detailed sensitivity analysis was conducted to quantify the contributions of various emission sources to ozone (O3), fine particulate matter (PM2.5), and regional haze in the Southeastern United States. O3 and particulate matter (PM) levels were estimated using the Community Multiscale Air Quality (CMAQ) modeling system and light extinction values were calculated from modeled PM concentrations. First, the base case was established using the emission projections for the year 2009. Then, in each model run, SO2, primary carbon (PC), NH3, NOx or VOC emissions from a particular source category in a certain geographic area were reduced by 30% and the responses were determined by calculating the difference between the results of the reduced emission case and the base case.The sensitivity of summertime O3 to VOC emissions is small in the Southeast and ground-level NOx controls are generally more beneficial than elevated NOx controls (per unit mass of emissions reduced). SO2 emission reduction is the most beneficial control strategy in reducing summertime PM2.5 levels and improving visibility in the Southeast and electric generating utilities are the single largest source of SO2. Controlling PC emissions can be very effective locally, especially in winter. Reducing NH3 emissions is an effective strategy to reduce wintertime ammonium nitrate (NO3NH4) levels and improve visibility; NOx emissions reductions are not as effective. The results presented here will help the development of specific emission control strategies for future attainment of the National Ambient Air Quality Standards in the region. 相似文献
166.
The objective of this study is to develop an alternative evaluation index (AEI) in order to determine the priorities of a range of alternatives using both the hydrological simulation program in FORTRAN (HSPF) and multicriteria decision making (MCDM) techniques. In order to formulate the HSPF model, sensitivity analyses of water quantity (peak discharge and total volume) and quality (BOD peak concentrations and total loads) are conducted and a number of critical parameters were selected. To achieve a more precise simulation, the study watershed is divided into four regions for calibration and verification according to landuse, location, slope, and climate data. All evaluation criteria were selected using the Driver–Pressure–State–Impact–Response (DPSIR) model, a sustainability evaluation concept. The Analytic Hierarchy Process is used to estimate the weights of the criteria and the effects of water quantity and quality were quantified by HSPF simulation. In addition, AEIs that reflected residents' preferences for management objectives are proposed in order to induce the stakeholder to participate in the decision making process. 相似文献
167.
Summary.
Darna bradleyi Holloway, D. trima Moore, Setothosea asigna van Eecke and Setora nitens Walker are sympatric and coseasonal limacodid moths in plantations of oil palm, Elaeis guineensis Jacq. (Arecales: Palmae), in Borneo, southeast Asia. We tested the hypothesis that these four species maintain reproductive
isolation through specificity in diel periods of communication, microlocation for communication and/or communication signal
(pheromone). Studying diel periodicity of calling behavior by female moths and response by male moths to traps baited with
virgin females or synthetic pheromone, we determined that sexual communication of D. bradleyi and D. trima took place from ˜17:30 to 18:45 hr and that of S. asigna and S. nitens from ˜18:45 to 20:00 hr and from ˜18:30 to 19:30 hr, respectively. Over 80% of male S. asigna and S. nitens were captured in pheromone-baited traps suspended >5 m high, whereas male D. bradleyi and D. trima were captured mostly in traps <5 m high. Synthetic pheromone baits attracted male moths in a species-specific manner. Moreover,
baits containing both S. asigna and S. nitens pheromones failed to attract any male moths, indicating that female S. asigna and S. nitens, with overlapping communication periods, use bifunctional pheromone components that attract conspecific males while repelling
heterospecifics. Similarly, addition of D. bradleyi pheromone to S. asigna or S. nitens pheromone reduced attraction of male S. asigna and S. nitens. The failure of D. bradleyi and D. trima, which overlap in time and microlocation for communication, to evolve bifunctional pheromones may be attributed to the recent
occurrence of sympatry between D. bradleyi and D. trima in Borneo, apparently too recent for bifunctional pheromones to have evolved. We conclude that D. bradleyi, D. trima, S. asigna and S. nitens utilize any or all of diel periodicity, intra and interspecific effects of communication signal and/or microlocation for
signaling, allowing these limacodids to co-inhabit the same habitat and remain reproductively isolated.
Received 5 May 2000; accepted 18 August 2000 相似文献
168.
D. J. Roux 《Environmental monitoring and assessment》2001,69(2):131-158
This article explores the strategies that were, and are being, used to facilitate the transition from scientific developmentto operational application of the South African River Health Programme (RHP). Theoretical models from the field of the management of technology are used to provide insight into the dynamics that influence the relationship between the creation and application of environmental programmes, and the RHP in particular. Four key components of the RHP design are analysed,namely the (a) guiding team, (b) concepts, tools and methods, (c) infra-structural innovations and (d) communication. These key components evolved over three broad life stages of the programme, which are called the design, growth and anchoring stages. 相似文献
169.
在大量野外工作的基础上 ,分析了徐州市的自然保护区建设现状 ,提出了建设策略 相似文献
170.
Climate change is a significant environmental, social and environmental problem that has been identified by scientists in
consensus internationally. The Australian Government’s response is considered by environmental non-government organisations
(NGOs) to be inadequate. NGOs are ‘change agents’ of society, and in this role they are agitating to influence political decision-making
on climate change response.
This paper outlines the campaign strategies being used by Australian NGOs to attract public and political attention to the
issue of climate change. Using seven NGOs as case studies, the archival materials of these organisations were accessed and
analysed. Current academic and other literature also was used to reflect on their effectiveness. Four campaign themes and,
within these, fifteen activities were identified.
The results indicate that the notion of whether NGOs are undertaking an ‘revolutionary’ or ‘incremental’ approach, or any
other narrow strategic approach put forward by various scholars is too simple for analysing campaigns: none of the NGOs appear
to intentionally favour one type of strategy. The question raised by this finding is whether the NGOs’ current ‘multi-strategic’
approach is effective. This research contributes to filling the information gap with regard to NGO campaign strategies on
environmental issues, and highlights the need for further research. 相似文献