全文获取类型
收费全文 | 88篇 |
免费 | 0篇 |
国内免费 | 1篇 |
专业分类
安全科学 | 7篇 |
废物处理 | 4篇 |
环保管理 | 3篇 |
综合类 | 9篇 |
基础理论 | 16篇 |
污染及防治 | 27篇 |
评价与监测 | 14篇 |
社会与环境 | 9篇 |
出版年
2022年 | 2篇 |
2021年 | 3篇 |
2019年 | 2篇 |
2018年 | 2篇 |
2017年 | 3篇 |
2016年 | 3篇 |
2015年 | 1篇 |
2014年 | 3篇 |
2013年 | 3篇 |
2012年 | 6篇 |
2011年 | 7篇 |
2010年 | 7篇 |
2009年 | 9篇 |
2008年 | 11篇 |
2007年 | 6篇 |
2006年 | 3篇 |
2005年 | 2篇 |
2004年 | 3篇 |
2003年 | 6篇 |
2002年 | 1篇 |
2001年 | 2篇 |
1999年 | 2篇 |
1995年 | 1篇 |
1958年 | 1篇 |
排序方式: 共有89条查询结果,搜索用时 15 毫秒
81.
Antonella Di Leo Cristina Annicchiarico Nicola Cardellicchio Santina Giandomenico Michele Conversano Giacomo Castellano Fabrizio Basile Walter Martinelli Giampiero Scortichini Lucia Spada 《Environmental science and pollution research international》2014,21(23):13196-13207
The levels and specific profiles of polychlorinated dibenzo-p-dioxins, dibenzofurans (PCDD/Fs) and dioxin-like polychlorinated biphenyls (DL-PCBs) in Mytilus galloprovincialis from the Mar Grande and the Mar Piccolo of Taranto were determined during the extensive monitoring plan of Local Health Authority to assess PCDD/Fs and DL-PCBs contamination in food and farm products, within 20 km from the industrial areas of Taranto, between March and December 2011. The average Total Toxicity Equivalence (TEQ) values for the sum of PCDD/F and DL-PCBs ranged from 1.61 to 5.63 pg WHO2005-TEQ g?1 wet weight basis, with the highest in the first inlet of the Mar Piccolo. In particular, DL-PCBs were the dominant chemicals in all samples, followed by PCDFs and PCDDs. Congener patterns in mussels were similar, indicating a homogeneous behavior in studied areas and, probably, the same type of source. The seasonal concentrations trend showed a relevant increase of dioxin and dioxin-like PCBs TEQs during the summer months, exceeding the limits set by the European Community for food and foodstuff. Reducing PCDD/Fs and PCBs is necessary to decrease contamination levels in order to safeguard marine ecosystem and human health in the Taranto area. 相似文献
82.
83.
Tommaso Chiti Giacomo Certini Lucia Perugini Giovanni Mastrolonardo Dario Papale Riccardo Valentini 《Regional Environmental Change》2011,11(2):371-376
The purpose of the present work is to asses the possibility of detecting changes in soil organic carbon (SOC) at the end of
the 5-years of the first Commitment Period (CP) of the Kyoto Protocol of the United Nation’s Framework Convention on Climate
Change (1 January, 2008–31 December, 2012), by both direct measurement and the use of an opportunely evaluated SOC model,
CENTURY. The investigated soil is young, developed since 28 years on virtually C-free spoil banks and under the influence
of two managed forest stands, one a mix of English oak (Quercus robur L.) and Italian alder (Alnus cordata Loisel.) and the other pure English oak. The SOC stock of either stand was monitored since the time the stands were planted
in 1981, and it was used together with other parameters for the model evaluation, while the future projections for the end
of the first (2012) and second (2017) CP were made according to two extreme IPCC climatic scenarios: A1F1, the most dramatic,
and B2, among the less impacting. Direct SOC measurements performed at the beginning and at the end of a time frame equivalent
to a commitment period (2004–2008) had not shown significant variations in either stands. Compared to the 2008 SOC stock,
in both stands the model shows variations at the end of the first CP from 0.7 to 1.8 Mg C ha−1 for the A1F1 scenario and from 0.3 to 1.7 Mg C ha−1 for the B2. These variations are within the standard deviations of the C stocks measured in 2008. On the contrary, at the
end of the second CP, the modelled SOC increments range from 2.5 to 3.6 Mg C ha−1 (A1F1) or from 1.9 to 3.4 Mg C ha−1 (B2), indicating the possibility to detect the SOC changes by direct measurement, since the values well agree with the minimum
detectable variation estimated for both sites in 3.3–4.5 Mg C ha−1. This work shows that SOC stock changes measured directly in the field can be minimal at the end of both CPs, and that CENTURY
well simulates the SOC dynamics of the stands. The use of such a model, validated at long-term experimental sites, hence represents
an effective tool for estimating future changes in SOC amounts in support of direct measurements when a short period of time,
such as the CP, is considered. 相似文献
84.
Gerosa G Finco A Mereu S Vitale M Manes F Denti AB 《Environmental pollution (Barking, Essex : 1987)》2009,157(5):1737-1744
Ozone and energy fluxes have been measured using the eddy covariance technique, from June to December 2004 in Castelporziano near Rome (Italy), and compared to similar measurements made in the previous year. The studied ecosystem consisted in a typical Mediterranean Holm oak forest. Stomatal fluxes have been calculated using the resistance analogy and by inverting the Penmann-Monteith equation. Results showed that the average stomatal contribution accounts for 42.6% of the total fluxes. Non-stomatal deposition proved to be enhanced by increasing leaf wetness and air humidity during the autumnal months. From a comparison of the two years, it can be inferred that water supply is the most important limiting factor for ozone uptake and that prolonged droughts alter significantly the stomatal conductance, even 2 months after the soil water content is replenished. Ozone exposure, expressed as AOT40, behaves similarly to the cumulated stomatal flux in dry conditions whereas a different behaviour for the two indices appears in wet autumnal conditions. A difference also occurs between the two years. 相似文献
85.
Two Fagus sylvatica L. clones were used to investigate the early responses to acute O3 exposure (150 nL L−1, i.e., 1.35× ambient hourly peak in rural Italy) and whether xeromorphic adaptations affect gas exchange, membrane, and epicuticular
responses. One clone originated in a wet and temperate climate in Central Italy (Tuscany); the other clone originated in a
warmer and drier climate in the southern-most part of the F. sylvatica distribution (Sicily). Because of higher base gas exchange rates, the most negative effects of O3 exposure (gas exchange impairment, uncoupling between net photosynthesis and stomatal conductance, increased membrane lipid
peroxidation) were found in the southern clone. Xeromorphic adaptations (higher epicuticular waxes and stomatal density, lower
leaf wettability and size) were found in this clone. Our results suggest that xeromorphism may increase O3 sensitivity in species not adapted to face water stress, like the mesophilic F. sylvatica, when experiments are carried out with full irrigation. We present evidence describing the relationship between gas exchange
and number and status of stomata. Stomatal density and the structural damage to stomata resulting from O3 exposure did not affect gas exchange: In fact, non-stomatal limitations to photosynthesis prevailed over stomatal limitations. 相似文献
86.
An educational project on biological monitoring of air quality was launched in 2004 to involve about 650 young students (age
6 to 16) from 21 schools of nine municipalities in Tuscany (Central Italy) in active detection of the crucial pollutant ozone
with indicator sensitive tobacco seedlings. Results implied the reading of 9,300 raw biological figures and were fortified
by the data captured by six photometric analysers. Under the guidance of their teachers, the students had several opportunities
to practice with many basic and applied study areas and were initiated into the scientific method in a simple and absorbing
manner. Curiosity and involvement were widespread; a sort of emotional and responsible relationship was developed by several
pupils. Though primarily an educational exercise, the survey introduced a research element and the regional picture of air
pollution that emerged has increased our knowledge of the air quality situation in the area. Biological monitoring of air
quality is a powerful tool to improve the awareness and involvement in key topics of environmental education. In addition,
it represents a crucial element for improving the awareness of problems and implies the active participation of citizens in
the assessment of several indicators of the state of the environment. Its potential as a robust implement in landscape and
urban planning is noteworthy. 相似文献
87.
The shortjaw mudsucker, Gillichthys seta, an intertidal goby endemic to the Sea of Cortez, has been proposed to be the paedomorphic derivative of the longjaw mudsucker,
Gillichthys mirabilis. G. mirabilis is a disjunct species, with populations found along the Pacific coast of central California to central Baja California, and
with isolated populations found in the northern Sea of Cortez. Previous studies have suggested that the endemic paedomorph
form speciated in sympatry with the Sea of Cortez population of G. mirabilis. Alternatively, this speciation event could have occurred before the separation of G. mirabilis populations into two disjunct entities. To test these alternative hypotheses, we collected adult individuals from both species
throughout their ranges from December 1997 to November 1998. We amplified and sequenced 142 partial [527 base pairs (bp)]
mitochondrial cytochrome b regions and 18 nuclear creatine kinase introns (140 bp). We found that Pacific populations of G. mirabilis separated into two distinct clades, possibly reflecting a phylogeographic break found in other fish species along the Baja
California coast at Punta Eugenia. These two Pacific populations were well separated from Sea of Cortez populations. Furthermore,
our results indicate that the split between Sea of Cortez and Pacific populations of G. mirabilis occurred well after the speciation event that separated G. mirabilis from its paedomorphic counterpart, G. seta.
Received: 30 March 2000 / Accepted: 4 September 2000 相似文献
88.
Licata P Naccari F Dugo G Fotia V Lo Turco V Potorti AG Di Bella G 《Environmental monitoring and assessment》2012,184(5):2881-2892
In the present study, we investigated the concentrations and distribution of organochlorine pesticides (OCs) and polychlorinated
biphenyls (PCBs) in intestine, liver, and muscle samples of 11 common buzzards (Buteo buteo) from Sicily used as bioindicator for monitoring pollution in environment. All samples of common buzzards were collected
at the “Recovery Center of Wild Fauna” of Palermo, through the Zooprophilactic Institute. Quantitative determination of OCs
and PCBs in the samples examined has been carried out using HRGC-ECD and GC-MS. The results obtained show the presence of
concentrations of ∑DDT and ∑PCB in almost all samples. Regarding ∑DDT (4,4′-DDE, 2,4′-DDD, 4,4′-DDD, 2,4′-DDT, and 4,4′-DDT), the highest concentrations were found in intestine (0.411 ± 0.050 μg/g) followed by muscle (0.130 ± 0.017 μg/g) and
liver samples (0.109 ± 0.014 μg/g). As regards the ∑PCB congeners (PCB-28, PCB-52, PCB-95, PCB-99, PCB-101, PCB-110, PCB-138,
PCB-146, PCB-149, PCB-151, PCB-153, PCB-170, PCB-177, PCB-180, PCB-183, and PCB-187), the highest concentrations were found
in intestine (1.686 ± 0.144 μg/g) followed by liver (1.064 ± 0.162 μg/g) and muscle samples (0.797 ± 0.078 μg/g). Our data
deserve particular attention not only for their significance but especially because they were recorded in Sicily, a region
with a very low risk of environmental pollution due to the shortage of industries. 相似文献
89.
Fail-to-hatch kestrel (Falco tinnunculus) eggs collected at the end of the 1999 and 2005 breeding seasons from nest boxes in and around the city of Rome, Italy, were analyzed by gas chromatography with electron capture detection for their PCB content and for the presence of DDT derivatives and other organochlorines. Among the various PCBs, congeners 153 and 180 were detected in all the eggs and showed the highest concentrations. Eggs collected from the same nest from a polluted location in Rome during 2 different years showed similar type and number of PCB congeners. These data and the fact that eggs from another nest near a sulphate mine had, atypically, low-chlorinated congeners support the conclusion that eggs of this species, whose adults in the Mediterranean and continental Europe perform only short or no migration movements, might be indicative of local pollution. When multiple eggs in the same clutch were analyzed, the PCBs were similar in type but their concentration decreased within clutch, likely in parallel to the laying order. 相似文献