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Manuela Gori Britta Bergfeldt Jürgen Reichelt Piero Sirini 《Waste management (New York, N.Y.)》2013,33(4):850-857
This paper presents the results of a study on the effect of natural weathering on volume stability of bottom ash (BA) from municipal solid waste (MSW) and wood waste incineration. BA samples were taken at different steps of treatment (fresh, 4 weeks and 12 weeks aged) and then characterised for their chemical and mineralogical composition and for volume stability by means of the mineralogical test method (M HMVA-StB), which is part of the German quality control system for using aggregates in road construction (TL Gestein-StB 04). Changes of mineralogical composition with the proceeding of the weathering treatment were also monitored by leaching tests. At the end of the 12 weeks of treatment, almost all the considered samples resulted to be usable without restrictions in road construction with reference to the test parameter volume stability. 相似文献
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Joan Navarro Daniel Oro Albert Bertolero Meritxell Genovart Antonio Delgado Manuela G. Forero 《Marine Biology》2010,157(11):2453-2459
The availability of food resources has been suggested as a major factor in the substantial increase in reproductive output,
survival, recruitment and, ultimately, population growth rates in most organisms. In fact, the artificial increase in food
availability resulting from human activities has been suggested as a factor in the substantial increase in population size
of several seabirds in recent decades. In the present study, our primary aim was to estimate the importance of the main natural
prey and two alternative feeding resources, fishery discards and the invasive American crayfish Procambarus clarkii, for an opportunistic seabird, the Audouin’s gull Larus audouinii. We also assessed the influence of age and sex in the use of those three types of food. For this purpose, we compared the
analyses of δ15N and δ13C in blood of male and female adults of known age and chicks with those in their potential prey. Our results reveal sex-related
and age-related differences in the consumption of fish discards, small pelagic fish and American crayfish. Differences in
the diet of males and females and also between adults and chicks could be related to different nutritional requirements. Age
differences were probably related to their different foraging proficiency and the tendency of young breeders to opportunistically
exploit anthropogenically derived food. This study illustrates the importance of considering the age and sex of individuals
to obtain feasible dietary information and to understand how the exploitation of food of human origin could affect population
growth. 相似文献
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R.F.M. Teixeira T. DomingosA.P.S.V. Costa R. OliveiraL. Farropas F. CalouroA.M. Barradas J.P.B.G. Carneiro 《Ecological modelling》2011,222(4):993-1001
Soil organic matter (SOM) is a particularly important parameter in soil management, especially in mineral soils in Mediterranean and semi-arid countries where its concentration is low. In these conditions, increasing SOM concentration has several agronomic and environmental benefits, ranging from increase in water holding capacity to soil protection and carbon sequestration. We develop a model to express the short-term trend of SOM increase in grasslands as the balance between input and mineralization. This model is calibrated using five years of soil analyses from eight locations. In each location there were either two or three plots with the different grassland systems considered: sown biodiverse permanent pastures rich in legumes (SBPPRLs), fertilized natural grasslands (FNGs), and (un-improved) natural grasslands (NGs). SBPPRL are a new system consisting in the use of plant biodiversity to increase pasture productivity and resilience. So far, they exist mostly in Portugal.We use statistical calibration to adjust an asymptotic curve to the data and obtain the model parameters. Under the assumption of equal mineralization rates across grassland systems, we find that the expected steady-state long term SOM concentration in undisturbed SBPPRL is higher than in NG and FNG. Fertilization does not significantly increase SOM input, and so the trend in SOM is equal for NG and FNG. In 10 years, there is an average increase of 0.21 percentage points per year in SBPPRL. In turn, SOM increases in FNG and NG are 0.08 percentage points per year. 相似文献
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Parolini Marco Sturini Michela Maraschi Federica Profumo Antonella Costanzo Alessandra Caprioli Manuela Rubolini Diego Ambrosini Roberto Canova Luca 《Environmental science and pollution research international》2021,28(13):15828-15837
Environmental Science and Pollution Research - Trace elements are widespread contaminants that can potentially threaten ecosystems and human health. Considering their distribution and toxicity,... 相似文献
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de Abreu Claudia B. de O. Ribeiro Marcos Pinho Cyndi S. Carneiro Candice N. de Azevedo Neto André D. de Souza Manuela O. de S. Dias Fabio 《Environmental science and pollution research international》2021,28(5):5598-5608
Environmental Science and Pollution Research - The present work aimed to analyze the mineral nutrition of Physalis angulata L. under stress by aluminum in the nutrient solution. The treatments... 相似文献
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Lopes Jéssica Costa Silva Bruno Garcia Dias Maria Eduarda Simões Carneiro Rodrigo Braz Damianovic Márcia Helena Rissato Zamariolli Foresti Eugenio 《Environmental science and pollution research international》2023,30(5):11755-11768
Environmental Science and Pollution Research - The nutrient biological removal from sewage, especially from anaerobic reactor effluents, still represents a major challenge in conventional sewage... 相似文献