全文获取类型
收费全文 | 800篇 |
免费 | 23篇 |
国内免费 | 39篇 |
专业分类
安全科学 | 46篇 |
废物处理 | 10篇 |
环保管理 | 272篇 |
综合类 | 167篇 |
基础理论 | 128篇 |
环境理论 | 2篇 |
污染及防治 | 57篇 |
评价与监测 | 56篇 |
社会与环境 | 111篇 |
灾害及防治 | 13篇 |
出版年
2023年 | 4篇 |
2022年 | 18篇 |
2021年 | 16篇 |
2020年 | 21篇 |
2019年 | 22篇 |
2018年 | 19篇 |
2017年 | 18篇 |
2016年 | 29篇 |
2015年 | 23篇 |
2014年 | 29篇 |
2013年 | 91篇 |
2012年 | 27篇 |
2011年 | 70篇 |
2010年 | 25篇 |
2009年 | 70篇 |
2008年 | 64篇 |
2007年 | 64篇 |
2006年 | 35篇 |
2005年 | 29篇 |
2004年 | 26篇 |
2003年 | 27篇 |
2002年 | 19篇 |
2001年 | 28篇 |
2000年 | 28篇 |
1999年 | 17篇 |
1998年 | 4篇 |
1997年 | 7篇 |
1996年 | 3篇 |
1995年 | 4篇 |
1994年 | 5篇 |
1993年 | 4篇 |
1992年 | 1篇 |
1991年 | 2篇 |
1990年 | 4篇 |
1989年 | 1篇 |
1988年 | 2篇 |
1987年 | 1篇 |
1986年 | 1篇 |
1985年 | 1篇 |
1984年 | 1篇 |
1982年 | 1篇 |
1972年 | 1篇 |
排序方式: 共有862条查询结果,搜索用时 562 毫秒
771.
Ari Jokinen Helena Leino Pia Bäcklund Markus Laine 《Journal of Environmental Policy & Planning》2018,20(5):551-563
The aim of our article is to follow how global policy models affect local policy making. Each city has unique local challenges in promoting development, e.g. economic growth, but also needs to find a balance between these targets and demands for sustainable city solutions. In our empirical study, we follow how ideas of waterfront development – to attract new inhabitants and promote economic growth – and global demands of carbon control were used interactively in a strategic spatial planning process in the city of Tampere, Finland. During the six-year planning process, these two policy targets became interdependent, created a new policy-making domain, and led to a combinatorial development of sustainability elements arising from this domain. These findings demonstrate the serial use of global policy models in the creation of a local urban ‘sustainability fix’. To conclude, the intertwinement of diverse global policy models in a city planning process creates easily a recursive cycle that redefines urban sustainability within cities and intercity networks. This perspective makes local policy narratives and strategic planning highly important in urban sustainability research as promoting urban sustainability becomes an inherently ambivalent practice. 相似文献
772.
Culture as trigger for sustainability transition in the water domain: the case of the Spanish water policy and the Ebro river basin 总被引:2,自引:2,他引:0
There is a mounting body of literature dealing generally with the dynamics of transitions of human systems towards sustainability
and specifically with the different stages and processes of transitions. However, the question of why transition processes
occur in the first place remains largely unexplained. This paper explores the concept of transition triggers, such as culture
or material resource scarcity, and provides a theoretical framework to explain the emergence of a transition and its relation
to recent developments in Spanish water policy. We adapt the general framework provided by current transition theory and gather
empirical evidence and insights from processes occurring within the Spanish policy context and the Ebro river basin in particular.
Our results show that the sole existence of biophysical limits to water use or development cannot explain the start of a possible
sustainability transition in this domain in Spain. Changes in the existing water policies in the direction of sustainability
were not ignited by people directly affected by water scarcities but by a coalition of sensitive agents, mostly from academia,
NGOs and local constituencies, who managed to articulate new identities, integrate multiple sources of policy relevant knowledge,
and develop new values under the umbrella of the new water culture movement.
相似文献
Akgun IlhanEmail: |
773.
工艺安全绩效指标介绍 总被引:1,自引:0,他引:1
介绍了根据瑞士奶酪模型——事故与保护层漏洞所设置的工艺安全绩效指标体系,探讨了美国石油学会标准的工艺安全绩效指标及分级,列举了每一级指标的具体指标和数据收集要求,并具体介绍了杜邦公司的工艺安全绩效指标体系,为国内企业提供参考。 相似文献
774.
775.
Introduction: Traffic crashes could result in severe outcomes such as injuries and deaths. Thus, understanding factors associated with crash severity is of practical importance. Few studies have deeply examined how prior violation and crash experience of drivers and roadways are associated with crash severity. Method: In this study, a set of risk indicators of road users and roadways were developed based on their prior violation and crash records (e.g., cumulative crash frequency of a roadway), in order to reflect certain aspect or degree of their driving risk. To explore the impacts of those indicators on crash severity and complex interactions among all contributing factors, a Bayesian network approach was developed, based on citywide crash data collected in Kunshan, China from 2016 to 2018. A variable selection procedure based on Information Value (IV) was developed to identify significant variables, and the Bayesian network was employed to explicitly explore statistical associations between crash severity and significant variables. Results: In terms of balanced accuracy and AUCs, the proposed approach performed reasonably well. Bayesian modeling results indicated that the prior crash/violation experiences of road users and roadways were very important risk indicators. For example, migrant workers tend to have high injury risk due to their dangerous violation behaviors, such as retrograding, red-light running, and right-of-way violation. Furthermore, results showed that certain variable combinations had enhanced impacts on severity outcome than single variables. For example, when a migrant worker and a non-motorized vehicle are involved in a crash happening on a local road with high cumulative violation frequency in the previous year, the probability for drivers suffering serious injury or fatality is much higher than that caused by any single factor. Practical applications: The proposed methodology and modeling results provide insights for developing effective countermeasures to reduce crash severity and improve traffic system safety performance. 相似文献
776.
Patrick Mwendwa 《中国人口.资源与环境(英文版)》2012,10(4)
To determine the climate changes that are due to natural variability and those due to human activities is quite challenging, just like delineating the impacts. Moreover, it is equally difficult to asce... 相似文献
777.
通过对广元市生态市的建设现状、指导思想、奋斗目标、建设路径进行深入分析,提出建设生态强市的可行性措施,并从法制、组织、资金、技术方面提供保障。 相似文献
778.
P. Smith J. U. Smith U. Franko K. Kuka V. A. Romanenkov L. K. Shevtsova M. Wattenbach P. Gottschalk O. D. Sirotenko D. I. Rukhovich P. V. Koroleva I. A. Romanenko N. V. Lisovoi 《Regional Environmental Change》2007,7(2):105-119
Three soil carbon models (RothC, CANDY and the Model of Humus Balance) were used to estimate the impacts of climate change
on agricultural mineral soil carbon stocks in European Russia and the Ukraine using detailed spatial data on land-use, future
land-use, cropping patterns, agricultural management, climate and soil type. Scenarios of climate were derived from the Hadley
Centre climate Version 3 (HadCM3) model; future yields were determined using the Soil–Climate–Yield model, and land use was
determined from regional agricultural and economic data and a model of agricultural economics. The models suggest that optimal
management, which entails the replacement of row crops with other crops, and the use of extra years of grass in the rotation
could reduce Soil organic carbon (SOC) loss in the croplands of European Russia and the Ukraine by 30–44% compared to the
business-as-usual management. The environmentally sustainable management scenario (SUS), though applied for a limited area
within the total region, suggests that much of this optimisation could be realised without damaging profitability for farmers. 相似文献
779.
Pragam Rathore 《Journal of Cleaner Production》2011,19(15):1709-1722
780.
In recent years, there has been a boom in environmental assessment reports utilizing environmental indicators. Most of these
publications are based on the casual chain frameworks (e.g., Pressure–State–Response (PSR), Driving force–State–Response (DSR),
and Driving force–Pressure–State–Impact–Response (DPSIR)). These frameworks have made an important contribution by emphasising
the importance of causality. However, the reliance on simple uni-directional chains is at the same time not very conducive
to a good understanding of the complexity of the processes behind environmental indicators. This limits the usefulness of
these frameworks for environmental (impact) assessments. In this paper we propose an enhanced DPSIR (eDPSIR) framework for
environmental indicators that takes inter-relations of indicators into account by relying on the use of causal networks rather
than causal chains. It will be shown how the concept of causal networks can increase insight into the inter-relation of environmental
issues and associated indicators, can facilitate the identification of key indicators for particular kinds of questions, and
can provide a useful first step to the establishment of dose–response functions. Working with causal networks can contribute
to more appropriate environmental policies and better management decisions. 相似文献