The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
During shortcut biological nitrogen removal in a polluted river, total nitrogen, ammonia nitrogen and nitrite nitrogen were quantified by near infrared spectroscopy and the synergy interval partial least squares (siPLS) algorithm. Spectral data of 138 water samples were obtained with a near infrared spectrometer. In addition, the real values of total nitrogen, ammonia nitrogen and nitrite nitrogen...
In karst areas, in order to ascertain the relationship between soil active organic carbon fractions and soil nutrient elements, topsoil samples (the sampling points were set at 80-m intervals) were collected for the analysis of soil physicochemical properties. In the sampling area, land use was divided into upland, paddy, and shrub land. The results showed that dissolved organic C (DOC) and microbial...
The response of leaf functional traits to the shift in environmental variables can raise plant adaptiveness in a wide variety of habitats and subsequently broaden their ecological niche. This study aims to determine the differences in leaf functional traits between simple and compound leaves of Canavalia maritime to illuminate the mechanisms underlying the ecological strategy of plant species with...
Thallium (Tl) is a typical trace metal of extreme high toxicity. As a concomitant element, Tl is widely found in various sulfide minerals and K-containing rock minerals. The outburst of Tl pollution in drinking water sources of the northern branch of the Pearl River in China as reported in 2010 has greatly aroused public concerns about Tl pollution in China. Apart from typical sources of Tl pollution...
We studied the quantity and spatial and dynamic changes of land use and ecosystem service functions in Nanping City from 1995 to 2015 using of Landsat TM / ETM images in 1995, 2000, 2005, 2005, and 2015. The results show that the main land use types in the study area were forest land, cultivated land, and grassland, and the rapid growth rate of forest land was in sharp contrast with the decrease of...
Nanoscale zero-valent iron (NZVI) as an effective material has been applied to reduce nitrate. Yet NZVI has defects of aggregation and oxidation. To overcome these disadvantages, nanoscale bimetallic iron/copper particles were introduced to reduce nitrate in this work. In this paper, nanoscale bimetallic Fe/Cu particles were prepared by the liquid phase chemical reduction method; the particles were...
In this study we investigated the projections of climate change and its impacts on the water resources of the Xin’anjiang watershed and optimal hydropower production using future run-offs (the decades of the 2020s, 2050s, and 2080s). The arc SWAT hydrological model and change factor downscaling technique were integrated to detect the run-offs and to downscale CMIP5 future climate variables, respectively...
While simultaneous processing of heavy metal-rich waste and municipal sewage sludge (MSS) in cement kilns may be a useful measure for protecting the environment, simultaneous co-disposal of these two types of wastes has seldom been reported in detail. In this study, we examined how MSS influenced the fixation of heavy metals during clinkerization and determined the main controlling mechanisms through...
Polybrominated diphenyl ethers (PBDEs), which belong to the class of brominated flame-retardants, are widely used in industrial products. PBDEs have been detected in varied environmental matrices and they can induce various toxicities such as neurotoxicity, cytotoxicity, and endocrine-disrupting effects in animals. The main objective of this study was to investigate the effects of 2,2’,4,4’,5,5’-hexabromodiphenyl...
Soil microbial communities play a vital role in soil carbon and carbon sequestration in forest ecosystems. In this study, soils were sampled in Tianbaoyan National Nature Reserve in southeastern China from four Nothotsuga longibracteata forests, including a pure N. longibracteata forest (NF), N. longibracteata + hardwood mixed forest (NHF), N. longibracteata + Rhododendron simiarum mixed forest (NRF),...
The relationships between species richness and driving factors might vary with taxa and spatial scale. For this study we used plant species data of eight groups from nature reserves in China, namely pteridophytes, gymnosperms, angiosperms, vascular plants, Chinese endemic species, rare and endangered plants, woody plants, and herbaceous plants, and eight putative environmental predictors to explore...
The system of dynamic leaching was designed for samples of a coal gasification residual from a coalto-methanol plant in northwestern China in order to investigate the leaching behavior of four potentially hazardous elements – Hg, Cr, As, and Pb – in the coal gasification residual and investigate the impacts of the leaching time, size of the samples, and pH of the leaching solution on the leaching...
This study aims to determine the functional traits and reproductive allocation (RA) strategy of the invasive plant Conyza canadensis across different invasion degrees along a latitude gradient in China. Invasion degree did not affect the functional traits and RA strategy of C. canadensis significantly. The high proportion of reproductive biomass (allocating approximately 20% of total biomass into...
In order to reveal the differentiated responses of plankton and zoobenthos to water quality on both annual and seasonal time scales, an ecological study on plankton and zoobenthos community was conducted during 2011 to 2015 in Nansi Lake in northern China. Different dynamics were found among phytoplankton, zooplankton, and zoobenthos in terms of density, biomass, and biodiversity. On an annual time...
Plant invasion succeeds because of such invader characteristics as fecundity and high-efficiency multiple reproduction modes. The acquisition of individual resources and the benefits of individual fitness are driven by optimum patterns of life history and trade-offs of reproductive allocation (RA) in plants, and variations in RA strategy play an key role in plant adaptation to environmental changes...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.