全文获取类型
收费全文 | 373篇 |
免费 | 3篇 |
国内免费 | 8篇 |
专业分类
安全科学 | 4篇 |
废物处理 | 21篇 |
环保管理 | 39篇 |
综合类 | 41篇 |
基础理论 | 102篇 |
污染及防治 | 104篇 |
评价与监测 | 54篇 |
社会与环境 | 16篇 |
灾害及防治 | 3篇 |
出版年
2023年 | 2篇 |
2022年 | 17篇 |
2021年 | 8篇 |
2020年 | 11篇 |
2019年 | 8篇 |
2018年 | 12篇 |
2017年 | 16篇 |
2016年 | 18篇 |
2015年 | 14篇 |
2014年 | 19篇 |
2013年 | 33篇 |
2012年 | 23篇 |
2011年 | 35篇 |
2010年 | 22篇 |
2009年 | 17篇 |
2008年 | 26篇 |
2007年 | 22篇 |
2006年 | 13篇 |
2005年 | 13篇 |
2004年 | 4篇 |
2003年 | 5篇 |
2002年 | 8篇 |
2001年 | 7篇 |
2000年 | 4篇 |
1999年 | 2篇 |
1998年 | 5篇 |
1997年 | 1篇 |
1996年 | 3篇 |
1995年 | 1篇 |
1994年 | 2篇 |
1993年 | 3篇 |
1992年 | 3篇 |
1991年 | 1篇 |
1990年 | 1篇 |
1989年 | 1篇 |
1988年 | 1篇 |
1986年 | 1篇 |
1985年 | 1篇 |
1982年 | 1篇 |
排序方式: 共有384条查询结果,搜索用时 31 毫秒
231.
Over the last few decades, Mediterranean coastal areas have experienced profound land-use changes due mainly to urban sprawl and reforestation at the expense of former traditional agrarian mosaics and natural resources, such as beach areas or freshwaters streams. These changes have had severe negative consequences on the biodiversity and ecological state (i.e. function) of the territory. The overall objective of this study was to evaluate the economic impacts of these consequences on ecosystem services (ES). By reconstructing the landscape of El Maresme County (Barcelona Province, Spain) for three historical points in time (1850, 1954 and 2010), we were able to assess how these land-use changes have affected the total ecosystem value (TEV) by estimating the ES non-market and market values provided by each land-use through market prices and benefit transfer methods. Results show an important decrease in the value of TEV since the 1950s (23.6 million Euros per year) due to urban sprawl. Despite the major changes occurring between the 1850s and 1950s, non-market values did not alter very much due to the type of agricultural practices. Our results show the necessity to take into account the value of non-market ES when designing land planning policies, and especially those concerning beaches and coastal systems to fully integrate the contribution on natural systems into decision-making processes. 相似文献
232.
233.
The crucial role of the accessible area in ecological niche modeling and species distribution modeling 总被引:4,自引:0,他引:4
Narayani BarveVijay Barve Alberto Jiménez-Valverde Andrés Lira-NoriegaSean P. Maher A. Townsend Peterson Jorge SoberónFabricio Villalobos 《Ecological modelling》2011,222(11):1810-1819
Using known occurrences of species and correlational modeling approaches has become a common paradigm in broad-scale ecology and biogeography, yet important aspects of the methodology remain little-explored in terms of conceptual basis. Here, we explore the conceptual and empirical reasons behind choice of extent of study area in such analyses, and offer practical, but conceptually justified, reasoning for such decisions. We assert that the area that has been accessible to the species of interest over relevant time periods represents the ideal area for model development, testing, and comparison. 相似文献
234.
Producer-level benefits of sustainability certification 总被引:1,自引:0,他引:1
Initiatives certifying that producers of goods and services adhere to defined environmental and social-welfare production standards are increasingly popular. According to proponents, these initiatives create financial incentives for producers to improve their environmental, social, and economic performance. We reviewed the evidence on whether these initiatives have such benefits. We identified peer-reviewed, ex post, producer-level studies in economic sectors in which certification is particularly prevalent (bananas, coffee, fish products, forest products, and tourism operations), classified these studies on the basis of whether their design and methods likely generated credible results, summarized findings from the studies with credible results, and considered how these findings might guide future research. We found 46 relevant studies, most of which focused on coffee and forest products and examined fair-trade and Forest Stewardship Council certification. The methods used in 11 studies likely generated credible results. Of these 11 studies, nine examined the economic effects and two the environmental effects of certification. The results of four of the 11 studies, all of which examined economic effects, showed that certification has producer-level benefits. Hence, the evidence to support the hypothesis that certification benefits the environment or producers is limited. More evidence could be generated by incorporating rigorous, independent evaluation into the design and implementation of projects promoting certification. 相似文献
235.
Valter M. Azevedo-Santos Marcelo F. G. Brito Pedro S. Manoel Júlia F. Perroca Jorge Luiz Rodrigues-Filho Lucas R. P. Paschoal Geslaine R. L. Gonalves Milena R. Wolf Martín C. M. Blettler Marcelo C. Andrade Andr B. Nobile Felipe P. Lima Ana M. C. Ruocco Carolina V. Silva Gilmar Perbiche-Neves Jorge L. Portinho Tommaso Giarrizzo Marlene S. Arcifa Fernando M. Pelicice 《Ambio》2021,50(7):1313
Plastics are dominant pollutants in freshwater ecosystems worldwide. Scientific studies that investigated the interaction between plastics and freshwater biodiversity are incipient, especially if compared to the marine realm. In this review, we provide a brief overview of plastic pollution in freshwater ecosystems around the world. We found evidence of plastic ingestion by 206 freshwater species, from invertebrates to mammals, in natural or semi-natural ecosystems. In addition, we reported other consequences of synthetic polymers in freshwater ecosystems—including, for instance, the entanglement of animals of different groups (e.g., birds). The problem of plastic pollution is complex and will need coordinated actions, such as recycling programs, correct disposal, stringent legislation, regular inspection, replacement of synthetic polymers with other materials, and ecological restoration. Current information indicates that the situation in freshwater ecosystems may be as detrimental as the pollution found in the ocean, although highly underappreciated.Supplementary InformationThe online version of this article (10.1007/s13280-020-01496-5) contains supplementary material, which is available to authorized users. 相似文献
236.
Erin L. Murphy Miranda Bernard Gwenllian Iacona Stephanie B. Borrelle Megan Barnes Alexis McGivern Jorge Emmanuel Leah R. Gerber 《Conservation biology》2022,36(2):e13827
Marine plastic pollution has emerged as one of the most pressing environmental challenges of our time. Although there has been a surge in global investment for implementing interventions to mitigate plastic pollution, there has been little attention given to the cost of these interventions. We developed a decision support framework to identify the economic, social, and ecological costs and benefits of plastic pollution interventions for different sectors and stakeholders. We calculated net cost as a function of six cost and benefit categories with the following equation: cost of implementing an intervention (direct, indirect, and nonmonetary costs) minus recovered costs and benefits (monetary and nonmonetary) produced by the interventions. We applied our framework to two quantitative case studies (a solid waste management plan and a trash interceptor) and four comparative case studies, evaluating the costs of beach cleanups and waste-to-energy plants in various contexts, to identify factors that influence the costs of plastic pollution interventions. The socioeconomic context of implementation, the spatial scale of implementation, and the time scale of evaluation all influence costs and the distribution of costs across stakeholders. Our framework provides an approach to estimate and compare the costs of a range of interventions across sociopolitical and economic contexts. 相似文献
237.
González-Arias Judith Martínez Elia Judith Gómez Xiomar Sánchez Marta E. Cara-Jiménez Jorge 《Environmental Chemistry Letters》2022,20(2):991-997
Environmental Chemistry Letters - The societal demand for biomethane production by anaerobic digestion of waste and biomass is rapidly growing to build a circular economy, yet actual efficiency is... 相似文献
238.
Vizuete Jorge Hernández-Moreno David López-Beceiro Ana Fidalgo Luis Eusebio Soler Francisco Pérez-López Marcos Míguez-Santiyán María Prado 《Environmental science and pollution research international》2022,29(36):54292-54308
Environmental Science and Pollution Research - In the present study, mercury (Hg), cadmium (Cd), lead (Pb), selenium (Se), and arsenic (As) were measured in liver, kidney, and feathers of adult,... 相似文献
239.
Achcar Jorge Alberto de Oliveira Ricardo Puziol 《Environmental Modeling and Assessment》2022,27(2):385-398
Environmental Modeling & Assessment - In this study, non-homogeneous Poisson processes (NHPP) are used to analyze climate data. The data were collected over a certain period time and consist of... 相似文献
240.
Coastal changes in the Ebro delta: Natural and human factors 总被引:1,自引:0,他引:1
The development of the delta of the River Ebro (Ebre) has, during recent centuries, been controlled by both natural and man-induced
factors. Deforestation by man of the Ebro drainage basin favoured a fast progradation of the deltaic system until this century,
when many dams were constructed along the river Ebro and its tributaries. As the sediment load of the river has been retained
behind the dams, the river sediment discharge has been drastically reduced and erosive processes have become dominant in the
Ebro delta coastal area, changing it from a river-wave to a sea-wave-dominated coast. This situation leads to a reshaping
of the nearshore delta area and a redistribution of the pre-existing beach sediment, and significant erosion has already occurred
in some zones. If these conditions continue in the future, severe changes will take place in the Ebro delta, in addition to
the effects of a relative sea level rise. The future development of this delta may be similar to that of abandoned deltaic
lobes, but faster. The present study shows, how coastal changes generated by anthropogenic factors can be faster and more
drastic than those induced only by natural factors. 相似文献