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1.
Environmental Science and Pollution Research - Climate action got attention from the United Nation’s Sustainable Development Goals (SDGs). Although a large number of studies are investigating...  相似文献   

2.
Environmental Science and Pollution Research - The urge to reduce greenhouse gas emissions, in particular carbon dioxide, is a global problem, not only in spatial terms but also in terms of the...  相似文献   

3.
4.
Ambient ozone and crop loss: establishing a cause-effect relationship   总被引:6,自引:0,他引:6  
This paper provides the results of a retrospective mathematical analysis of the US NCLAN (National Crop Loss Assessment Network) open-top chamber data. Some 77% of the 73 crop harvests examined, showed no statistically significant yield differences between NF (non-filtered open-top chamber) and AA (chamberless, ambient air) treatments (no easily discernable chamber effects on yield). However, among these cases only seven acceptable examples showed statistically significant yield reductions in NF compared to the CF (charcoal filtered open-top chamber) treatment. An examination of the combined or cumulative hourly ambient O3 frequency distribution for cases with yield loss in NF compared to a similar match of cases without yield loss showed that the mean, median and the various percentiles were all higher (>/= 3 X) in the former in contrast to the latter scenario. The combined frequency distribution of hourly O3 concentrations for the cases with yield loss in NF were clearly separated from the corresponding distribution with no yield loss, at O3 concentrations > 49 ppb. Univariate linear regressions between various O3 exposure parameters and per cent yield losses in NF showed that the cumulative frequency of occurrence of O3 concentrations between 50 and 87 ppb was the best predictor (adjusted R2 = 0.712 and p = 0.011). This analysis also showed that the frequency distribution of hourly concentrations up to 87 ppb O3 represented a critical point, since the addition of the frequency distributions of > 87 ppb O3 did not improve the R2 values. In fact as the frequency of hourly O3 concentrations included in the regression approached 50-100 ppb, the R2 value decreased substantially and the p value increased inversely. Further, univariate linear regressions between the frequencies of occurrence of various O3 concentrations between 50 and 90 ppb and: (a) cases with no yield difference in NF and (b) cases with yield increase in NF compared to the CF treatment (positive effect) provided no meaningful statistical relationship (adjusted R2 = 0.000) in either category. These results support the basis that additional evaluation of the frequency of occurrence of hourly O3] concentrations between 50 and 87 ppb for cases with the yield reductions could provide a meaningful ambient O3 standard, objective or guideline for vegetation.  相似文献   

5.
This paper describes the study that led to the development of a carbon dioxide emissions matrix for the Oeiras municipality, one of the largest Portuguese municipalities, located in the metropolitan area of Lisbon. This matrix takes into account the greenhouse gas (GHG) emissions due to an increase of electricity demand in buildings as well as solid and liquid wastes treatment from the domestic and services sectors. Using emission factors that were calculated from the relationship between the electricity produced and amount of treated wastes, the GHC emissions in the Oeiras municipality were estimated for a time series of 6 yr (1998-2003). The obtained results showed that the electricity sector accounts for approximately 75% of the municipal emissions in 2003. This study was developed to obtain tools to base options and actions to be undertaken by local authorities such as energy planning and also public information.  相似文献   

6.

Introduction

The effect of oceanic CO2 sequestration was examined exposing a deep-sea bacterium identified as Vibrio alginolyticus (9NA) to elevated levels of carbon dioxide and monitoring its growth at 2,750 psi (1,846 m depth).

Findings

The wild-type strain of 9NA could not grow in acidified marine broth below a pH of 5. The pH of marine broth did not drop below this level until at least 20.8 mM of CO2 was injected into the medium. 9NA did not grow at this CO2 concentration or higher concentrations (31.2 and 41.6 mM) for at least 72 h. Carbon dioxide at 10.4 mM also inhibited growth, but the bacterium was able to recover and grow. Exposure to CO2 caused the cell to undergo a morphological change and form a dimple-like structure. The membrane was also damaged but with no protein leakage.  相似文献   

7.
Environmental Science and Pollution Research - The main aim of this current study is to empirically scrutinize the determinants of energy consumption for 24 African countries sub-grouped into three...  相似文献   

8.
Environmental Science and Pollution Research - This study aims to contribute to the literature and examine the causal relationship between Pakistan’s agricultural products export,...  相似文献   

9.
Environmental Science and Pollution Research - Rapid evolution in the population age structure of the Middle East countries has major economic, social, and environmental outcomes. Therefore, to...  相似文献   

10.
Environmental Science and Pollution Research - The concern of environmental degradation, poverty, and income inequality remains a priority in achieving sustainable development goals. Countries are...  相似文献   

11.
Environmental Science and Pollution Research - Global warming is one of the most serious environmental problems that the world faces today. Millions of human lives are at risk, hence the subject...  相似文献   

12.
Environmental Science and Pollution Research - The use of zinc oxide nanoparticles (ZnO NPs) is expected to increase soil fertility, crop productivity, and food quality. However, the potential...  相似文献   

13.

Studies on the production of biogas of different organic materials in an anaerobic environment are being carried out all over the world. The most important parameters in these researches can be listed as raw material potential, production processes, economic analyses, and environmental effects. Chicken manure is one of the raw materials used in biogas production. In this study, in addition to the analysis of biogas and energy production potential from chicken manure, greenhouse gas emissions were analyzed to evaluate environmental effects. In Turkey, chicken manure is not adequately processed and causes environmental pollution. The model biogas plant and potential energy generation were researched in this field study. The pilot plant produces 8.58 million m3 of biogas per year by processing about 110 thousand tons of waste. It produces 17 GWh/year of electricity and 16 GWh/year of thermal energy, as well as reducing CO2 greenhouse gas emissions by 13.86 thousand tons/year.

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14.
研究了2005—2016年陕西省10个地级市的节能减排效率和经济发展水平,并对两者的耦合关系进行了分析,旨在为陕西省及其他地区环境与经济可持续协调发展提供参考。实证表明:(1)陕西省各地级市历年的节能减排效率均值均小于1,投入产出结构不甚合理,需协调技术进步与经济规模之间的关系。(2)陕西省经济发展指数呈波动上升趋势,总体上为缓慢增长。西安市经济的快速发展并未对周围地级市形成辐射带动作用。(3)经济发展水平和节能减排效率的耦合度总体上也呈波动上升趋势,其中节能减排效率提高会使耦合度下降,而经济发展水平的提高对耦合度起促进作用,但经济发展指数与耦合度之间呈倒U型分布。建议陕西省继续大力发展经济,增强西安市对周围地级市的辐射带动作用,同时转变西安市经济发展方式,提高资源配置效率,走集约型经济增长道路,以实现节能减排效率与经济发展水平的协调发展。  相似文献   

15.
Environmental Science and Pollution Research - Over the past 40 years since China’s reform and opening up, the industrial structure has undergone tremendous changes. The rapid...  相似文献   

16.
Environmental Science and Pollution Research - This paper examines the long-term and short-term relationships between renewable energy consumption, output and export, and CO2 emissions in China...  相似文献   

17.
Environmental Science and Pollution Research - In recent decades, many authors have investigated possibility of simultaneous reduction of income inequality and pollution related to climate change....  相似文献   

18.
Globally, greenhouse gas budgets are dominated by natural sources, and aquatic ecosystems are a prominent source of methane (CH4) to the atmosphere. Beaver (Castor canadensis and Castor fiber) populations have experienced human-driven change, and CH4 emissions associated with their habitat remain uncertain. This study reports the effect of near extinction and recovery of beavers globally on aquatic CH4 emissions and habitat. Resurgence of native beaver populations and their introduction in other regions accounts for emission of 0.18–0.80 Tg CH4 year−1 (year 2000). This flux is approximately 200 times larger than emissions from the same systems (ponds and flowing waters that became ponds) circa 1900. Beaver population recovery was estimated to have led to the creation of 9500–42 000 km2 of ponded water, and increased riparian interface length of >200 000 km. Continued range expansion and population growth in South America and Europe could further increase CH4 emissions.

Electronic supplementary material

The online version of this article (doi:10.1007/s13280-014-0575-y) contains supplementary material, which is available to authorized users.  相似文献   

19.
Environmental Science and Pollution Research - This study explores the new area of corporate social responsibility (CSR) and financial performance in the context of the fintech technology. The...  相似文献   

20.
Environmental Science and Pollution Research - Environmental quality and economic activity have a strong relationship. Carbon emissions remain one of the world’s most dangerous environmental...  相似文献   

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