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| 1 | Assessment of Point and Nonpoint Sources Pollution in Songhua River Basin,Northeast China by Using Revised Water Quality Model显示文摘Individual participation of pollutants in the pollution load should be estimated even if roughly for the appropriate environmental management of a river basin.It is difficult to identify the sources and to quantify the load, especially in modeling nonpoint source.In this study a revised model was established by integrating point and nonpoint sources into one-dimensional Streeter-Phelps(S-P) model on the basis of real-time hydrologic data and surface water quality monitoring data in the Jilin Reach of the Songhua River Basin.Chemical oxygen demand(COD) and ammonia nitrogen(NH 3-N) loads were estimated.Results showed that COD loads of point source and nonpoint source were 134 958 t/yr and 86 209 t/yr, accounting for 61.02% and 38.98% of total loads, respectively.NH 3-N loads of point source and nonpoint source were 16 739 t/yr and 14 272 t/yr, accounting for 53.98% and 46.02%, respectively.Point source pollution was stronger than nonpoint source pollution in the study area at present.The water quality of upstream was better than that of downstream of the rivers and cities.It is indispensable to treat industrial wastewater and municipal sewage out of point sources, to adopt the best management practices to control diffuse pollutants from agricultural land and urban surface runoff in improving water quality of the Songhua River Basin.The revised S-P model can be successfully used to identify pollution source and quantify point source and nonpoint source loads by calibrating and validating. | YANG Yuhong YAN Baixing SHEN Wanbin | 2010 | Chinese Geographical Science2010，20，1： | 13 |
| 2 | CPSF30-L-mediated recognition of mRNA m^(6)A modification controls alternative polyadenylation of nitrate signaling-related gene transcripts in Arabidopsis显示文摘N6-methyladenosine(m^(6)A),a ubiquitous internal modification of eukaryotic mRNAs,plays a vital role in almost every aspect of mRNA metabolism.However,there is little evidence documenting the role of m^(6)A in regulating alternative polyadenylation(APA)in plants.APA is controlled by a large protein-RNA complex with many components,including CLEAVAGE AND POLYADENYLATION SPECIFICITY FACTOR30(CPSF30).In Arabidopsis,CPSF30 has two isoforms and the longer isoform(CPSF30-L)contains a YT512-B Homology(YTH)domain,which is unique to plants.In this study,we showed that CPSF30-L YTH domain binds to m^(6)A in v itro.In the cpsf30-2 mutant,the transcripts of many genes including several important nitrate signaling-related genes had shifts in polyadenylation sites that were correlated with m^(6)A peaks,indicating that these gene transcripts carrying m^(6)A tend to be regulated by APA.Wild-type CPSF30-L could rescue the defects in APA and nitrate metabolism in cpsf30-2,but m^(6)A-binding-defective mutants of CPSF30-L could not.Taken together,our results demonstrated that m^(6)A modification regulates APA in Arabidops is and revealed that the m^(6)A reader CPSF30-L affects nitrate signaling by controlling APA,shedding new light on the roles of the m^(6)A modification during RNA 3-end processing in nitrate metabolism. | Yiteng Hou Jing Sun Baixing Wu Yangyang Gao Hongbo Nie Zhentian Nie Shuxuan Quan Yong Wang Xiaofeng Cao Sisi Li | 2021 | Molecular Plant2021，14，4： | 12 |
| 3 | An innovative wood-chip-framework substrate used as slow-release carbon source to treat high-strength nitrogen wastewater显示文摘Removal of nitrogen in wastewater before discharge into receiving water courses is an important consideration in treatment systems.However,nitrogen removal efficiency is usually limited due to the low carbon/nitrogen(C/N) ratio.A common solution is to add external carbon sources,but amount of liquid is difficult to determine.Therefore,a combined wood-chip-framework substrate(with wood,slag and gravel) as a slow-release carbon source was constructed in baffled subsurface-flow constructed wetlands to overcome the problem.Results show that the removal rate of ammonia nitrogen(NH_4^+-N),total nitrogen(TN) and chemical oxygen demand(COD) could reach 37.5%-85%,57.4%-86%,32.4%-78%,respectively,indicating the combined substrate could diffuse sufficient oxygen for the nitrification process(slag and gravel zone) and provide carbon source for denitrification process(wood-chip zone).The nitrification and denitrification were determined according to the location of slag/gravel and wood-chip,respectively.Nitrogen removal was efficient at the steady phase before a shock loading using slag-wood-gravel combined substrate because of nitrification-denitrification process,while nitrogen removal was efficient under a shock loading with wood-slag-gravel combined substrate because of ANAMMOX process.This study provides a new idea for wetland treatment of high-strength nitrogen wastewater. | Huai Li Zifang Chi Baixing Yan Long Cheng Jianzheng Li | 2017 | Journal of Environmental Sciences2017，29，1： | 10 |
| 4 | Measurement and Analysis of Formation Conditions of Dew in Carex lasiocarpa Marsh显示文摘In order to investigate the dew amounts and analysis formation conditions of dew by examining the correlations between dew amounts and meteorological factors in Carex lasiocarpa marsh in the Sanjiang Plain,the dew amounts and several meteorological factors were monitored during the growing season from June to September in 2005 and 2008 at the Sanjiang Mire Wetland Experimental Station,Chinese Academy of Sciences.Dew was collected by woodstick made by poplar tree in Carex lasiocarpa marsh and the amounts were estimated by subtraction method.The results indicated that average daily accumulated dew amounts reached the peak in August.The highest dew amounts in Carex lasiocarpa marsh were 0.201 mm/d,and the most frequent dew volume ranged from 0.08 mm/d to 0.14 mm/d.The amounts correlated positively with relative humidity,dew point temperature,and water vapor pressure.Whereas it correlated negatively with wind speed.The dew production in Carex lasiocarpa marsh more frequently occurred under the conditions of wind speed around 2.0 m/s,the water vapor pressure above 9 hPa;the relative humidity between 90% and 95% and dew point temperature above 6 ℃. | XU Yingying YAN Baixing GUO Yuedong | 2009 | 湿地科学2009，7，2： | 6 |
| 5 | Application of Stable Isotope Tracing Technologies in Identification of Transformation among Waters in Sanjiang Plain,Northeast China显示文摘In order to investigate the transformation among the precipitation,groundwater,and surface water in the Sanjiang Plain,Northeast China,precipitation and groundwater samples which were collected at the meteorological station of the Sanjiang Mire Wetland Experimental Station,Chinese Academy of Sciences and the surface water which collected from the Wolulan River were used to identify the transformation of three types of water.The isotope composition of different kinds of water sources were analyzed via stable isotope(deuterium and oxygen-18) investigation of natural water.The results show a clear seasonal difference in the stable isotopes in precipitation.During the cold half-year,the mean stable isotope in precipitation in the Sanjiang Plain reaches its minimum with the minimum temperature.The δ18O and δD values are high in the rainy season.In the Wolulan River,the evaporation is the highest in August and September.The volume of evaporation and the replenishment to the river is mostly same.The groundwater is recharged more by the direct infiltration of precipitation than by the river flow.The results of this study indicate that the water bodies in the Sanjiang Plain have close hydrologic relationships,and that the transformation among each water system frequently occurs. | XU Yingying YAN Baixing LUAN Zhaoqing ZHU Hui WANG Lixia | 2013 | Chinese Geographical Science2013，23，4： | 6 |
| 6 | Long-term impacts of graphene oxide and Ag nanoparticles on anammox process: Performance, microbial community and toxic mechanism显示文摘The increasing application of engineered nanoparticles(NPs) has posed an emerging challenge to constructed wetland wastewater treatment. The performance, microbial community and toxic mechanism of anammox-based unplanted subsurface-flow constructed wetlands(USFCWs) were investigated under the long-term exposure of different graphene oxides(GOs) and Ag NP concentrations. Results showed that the addition of GO could promote TN removal, manifesting as function anammox bacteria C. Anammoxoglobus having a relative high abundance, for GO did not cause significant damage to the cell integrity though there was an increase in ROS concentrations. TN removal would not be obviously affected under exposure of 1 mg/L Ag NPs, for the function gene related to cell biogenesis and repair was up-regulated; while the addition of 10 mg/L Ag NPs would have an inhibiting effect on TN removal in the USFCWs, for the disappearance of some species having anammox ability. Key enzymes of anammox process(NIR and HDH) decreased to some extent under GO and Ag NP exposure, and function gene of defense mechanisms had an increase trend in samples. | Huai Li Zifang Chi Baixing Yan | 2019 | Journal of Environmental Sciences2019，31，5： | 6 |
| 7 | Temporal variability of iron concentrations and fractions in wetland waters in Sanjiang Plain, Northeast China显示文摘Chemical forms, reactivities and transformation of iron fractions in marshy waters were investigated with cross-flow filtration technique to study the iron environmental behavior. Iron fractions were divided into four parts: acid-labile iron (pre-acidification of unfiltered marshy water samples, > 0.7 μm), high-molecular-weight iron (0.7-0.05 μm), medium-molecular-weight iron (0.05-0.01 μm), and low-molecular-weight iron (< 0.01 μm). The cross-flow filtration suggested that iron primarily exist in both the > 0.7 μm and < 0.01 μm size fractions in marshy waters. Rainfall is the key for rain-fed wetland to determine fate of iron by changing the aquatic biochemical conditions. By monitoring the variation of iron concentrations and fractions over three years, it was found that dissolved iron and acid-labile iron concentrations exhibit a large variation extent under different annual rainfalls from 2006 to 2008. The seasonal variation for iron species proved that the surface temperature could control some conversion reactions of iron in marshy waters. Low- molecular-weight iron would convert to acid-labile iron gradually with temperature decreasing. The photochemical reactions of iron fractions, especially low-molecular-weight iron had occurred under solar irradiation. The relative proportion of low-molecular-weight in total dissolved iron ranging from 28.3% to 43.2% were found during the day time, which proved that the observed decreasing concentration of acid lability iron was caused by its degradation to low molecular weight iron. | Xiaofeng Pan Baixing Yan Muneoki Yoh Lixia Wang Xiuqi Liu | 2010 | Journal of Environmental Sciences2010，22，7： | 4 |
| 8 | Effects of land use and changes in cover on the transformation and transportation of iron:A case study of the Sanjiang Plain,Northeast China显示文摘Wetland reclamation has been ongoing in the Sanjiang Plain since the mid-1950s,which has resulted in major changes in wetlands and the agriculture ecosystem in the region that have influenced the iron output to the Sea of Okhotsk and limited the primary productivity in the North Pacific Ocean.This study was conducted to investigate the chemical forms of iron in different aquatic environments(agricultural water including groundwater,paddy water,and canal water;wetland water including marsh water,marsh streams,and main streams) with the cross-flow filtration method to reveal the transportation and transformation characteristics of iron in response to major land use changes.In addition,the factors affecting iron behavior in different water bodies were reviewed.In marsh water and streams,the concentrations of dissolved iron were higher due to the high organic matter contents and marsh water becoming the main iron source for river water.The conversion of dissolved iron into acid-labile iron occurred during the discharge of wetland water into marsh rivers.Iron primarily existed in both the >0.7 and <0.01 μm size fractions,accounting for about 58.3% and 26.4% of the total dissolved iron,respectively.In agricultural irrigation systems,ferrous ion entered the paddy fields from groundwater,and a fraction of this ferrous iron was subsequently converted into high molecular weight and medium molecular weight iron(colloid iron) in paddy and canal water.However,the concentrations of total dissolved iron decreased by 62.5% from underground to the surface due to the formation of precipitates.Despite this,water discharge in agriculture is still an important iron source for rivers and has the potential to supplement iron due to its higher acid-labile iron concentrations.Land use and cover change and agricultural irrigation increased the iron content of surface soil,but reduced the output of iron in water systems.Overall,the concentration of total dissolved iron in water systems has been reduced to 42.6% by wetland reclamation. | PAN XiaoFeng YAN BaiXing Yoh MUNEOKI | 2011 | Science China Earth Sciences2011，54，5： | 4 |
| 9 | Dissolved organic carbon,a critical factor to increase the bioavailability of phosphorus during biochar-amended aerobic composting显示文摘Considerable research efforts have been devoted to increase phosphorus(P)availability during aerobic composting.However,there is little discussion weather the dissolved organic carbon(DOC)controls the transformation among P-fractions.Thus,we investigated the changes in DOC compositions and P-fractions during biochar-amended composting(wet weight basis,5%and 10%).TP content continuously increased since the'concentration effect'during aerobic composting.NaHCO_(3)-Pi,NaOH-Pi and HCl-Pi were main P-fractions,and biochar can improve P-bioavailability by transforming NaOH-Pi and HCl-Pi into NaHCO_(3)-Pi.Structure equation models(SEMs)indicated that biochar enhanced the P-bioavailability through regulating the decomposition of DOC.Our results at least hint that the activation mechanism on P under the influence of DOC during biochar-amended composting. | Hu Cui Yang Ou Lixia Wang Baixing Yan Yingxin Li Meiwen Bao | 2022 | Journal of Environmental Sciences2022，34，3： | 3 |
| 10 | Effect of Different Factors on Nitrogen Removal Rate in Constructed Wetlands显示文摘Factors affecting total nitrogen(TN) removal rates in constructed wetland were investigated by intermittent operation in the subsurface flow(SSF) constructed wetland system.The results demonstrated that removal rates of TN increased with the rising of TN pollution load(1.40-12.40 g/m2) when the retention time was determined by 60% TN removal efficiency(n=180,p<0.05) in SSF wetlands.The maximum TN removal rate was 1.71 g/(m2·d) in SSF Phragmites australis-soil-slag system.TN removal rates were affected by total phosphorus load in case of higher TN load.TN removal rates in SSF Phragmites australis wetlands were greater than that in SSF Calamagrostis angustifolia wetlands at the same experimental cycle.Effect of wetland substrates on TN removal rates varied with the pollutants loading in SSF constructed wetland system,plant species and plant-growing period. | LIU Shuyuan YAN Baixing WANG Lixia | 2010 | 湿地科学2010，8，2： | 3 |
| 11 | Historical Evolution of Mariculture in China During Past 40 Years and Its Impacts on Eco-environment显示文摘The rapid development of mariculture in China in recent decades has satisfied people's demand of seafood, and has made a great contribution to economic development. However, mariculture has also caused some negative impacts on the eco-environment. By statistically analyzing national data(as well as data for four main provinces) regarding the mariculture area and cultivation species in China since reform and opening up, the historical evolution of mariculture during the past 40 years was analyzed, the driving factors related to policy, market and technology innovation were discussed, and the potential impacts of mariculture on the coastal eco-environment were also illustrated. The statistical results indicated that the maricultural area increased radically during the past 40 years, from 1979(116.47 × 10~3 ha) to 2012(2205.65 × 10~3 ha), with an increase of nearly 20-fold. Shandong Province represented the fastest-growing region, with an increase of 31-fold. Moreover, the cultivated species had gradually become diversified. Initially, shellfish and algae were major species, and then it developed to various species including fish, and currently shellfish and crustaceans were the major species. The development of mariculture was driven by government policies, market economy and technology innovation. Rapid development of mariculture also caused significantly adverse impacts on the eco-environment of the coastal regions. For example, the sea reclamation for mariculture decreased the area and function of coastal wetlands and the contaminants originating from mariculture destroyed the coastal aquatic environment. Fortunately, the implementation of ‘13 th Five-Year Fisheries Planning' is expected to help both improve the seafood quality and reduce the contamination in coastal aquatic environment. This current study will provide reference for management and structure adjustment of mariculture in the future. | LIANG Yinxiu CHENG Xianwei ZHU Hui Brian SHUTES YAN Baixing ZHOU Qingwei YU Xiangfei | 2018 | Chinese Geographical Science2018，28，3： | 3 |
| 12 | Cryo-EM structures of human m^(6)A writer complexes显示文摘N6-methyladenosine(m^(6)A)is the most abundant ribonucleotide modification among eukaryotic messenger RNAs.The m^(6)A“writer”consists of the catalytic subunit m^(6)A-METTL complex(MAC)and the regulatory subunit m^(6)A-METTL-associated complex(MACOM),the latter being essential for enzymatic activity.Here,we report the cryo-electron microscopy(cryo-EM)structures of MACOM at a 3.0-Åresolution,uncovering that WTAP and VIRMA form the core structure of MACOM and that ZC3H13 stretches the conformation by binding VIRMA.Furthermore,the 4.4-Åresolution cryo-EM map of the MACOM–MAC complex,combined with crosslinking mass spectrometry and GST pull-down analysis,elucidates a plausible model of the m^(6)A writer complex,in which MACOM binds to MAC mainly through WTAP and METTL3 interactions.In combination with in vitro RNA substrate binding and m^(6)A methyltransferase activity assays,our results illustrate the molecular basis of how MACOM assembles and interacts with MAC to form an active m^(6)A writer complex. | Shichen Su Shanshan Li Ting Deng Minsong Gao Yue Yin Baixing Wu Chao Peng Jianzhao Liu Jinbiao Ma Kaiming Zhang | 2022 | Cell Research2022，32，11： | 3 |
| 13 | Aggregate-related microbial communities and nutrient stoichiometry under different croplands显示文摘Ecological stoichiometry is an important indicator presenting multiple elements balance in agro-ecosystems.However,information on microbial communities and nutrient stoichiometry in soil aggregate fractions under different croplands(rice,maize,and soybean fields)remains limited.Thus,this study investigated water-stable aggregate structure and their internal nutrient stoichiometry under different croplands and ascertain their interaction mechanism with microbial communities.The results showed that no significant difference on the carbon-to-nitrogen ratio(C:N)in soil aggregate fractions was observed,while the carbon-to-phosphorus ratio(C:P)and the nitrogen-to-phosphorus ratio(N:P)were ranked as rice field>maize field>soybean field,and were higher in mega-aggregates(ME,>1 mm).General fatty acid methyl ester(FAME),Gram-positive bacteria(G+),and Gramnegative bacteria(G−)were predominant microbial communities in all croplands and tented to condense into coarse-aggregates.Redundancy analysis(RDA)demonstrated that N:P ratio was primary environmental controls on the distribution of soil microorganisms.In the Sanjiang Plain,N was the nutrient element limiting agro-ecosystem productivity,and rice cultivation is expected to improve the N-limited nutrient status. | Hu Cui Yang Ou Duian Lv Lixia Wang Aizhen Liang Baixing Yan Yingxin Li | 2020 | Ecological Processes2020，9，1： | 2 |
| 14 | Geochemical Characteristics of Heavy Metals in Riparian Sediment Pore Water of Songhua River, Northeast China显示文摘This study reports the geochemical characteristics of zinc (Zn), copper (Cu), lead (Pb), nickel (Ni), mercury (Hg), iron (Fe), and manganese (Mn) in the riparian sediment pore water of the Songhua River, Northeast China. In total, 36 pore water samples and 18 surface water samples from three typical sections were collected and analyzed in June 2009. Cluster analysis of heavy metals was performed to analyze the pollution sources of the metals. Results showed that Hg concentrations in the pore water were greater than those in the surface water, indicating a potential ability of Hg release from riparian sediment system to river water. However, concentrations of Fe and Mn in the surface water were greater than those in the pore water, demonstrating that the microenvironments of riparian and riverbed sediment systems were quite different. Variations of Zn, Cu, Pb and Ni between the surface and the pore water were different in each section. Most metals had similar horizontal and profile distribution characteristics in the three sections except for Zn and Ni. Hg, Fe and Mn concentrations in the pore water increased gradually with the increase in horizontal distance from water body, in contrast to this, Cu decreased, and Pb presented a fluctuating trend. With the increase in depth, Pb and Fe, Cu and Mn showed the same trends, and Hg showed a variable trend. The above distribution characteristics could mainly be attributed to the properties and the interactions of metals, pH and oxidation-reduction conditions, and the complex pollution sources and hydrologic regime in history. The probable sources of metals include the historical and ongoing discharge of industrial wastewater, mining activities, sewage irrigation for agricultural production, and atmospheric deposition from coal-fired plants. | ZHU Hui YAN Baixing PAN Xiaofen YANG Yuhong WANG Lixia | 2011 | Chinese Geographical Science2011，21，2： | 2 |
| 15 | Removal of nitrogen and COD in horizontal subsurface flow constructed wetlands under different influent C/N ratios显示文摘 | Hui Zhu Baixing Yan Yingying Xu Jiunian Guan Shuyuan Liu | 2013 | Ecological Engineering2013，，： | 2 |
| 16 | Optimal patterns for four-connectivity and full coverage in wireless sensor networks 显示文摘 | BaiX L Yun Z Q Xuan D | 2010 | IEEE Transactions on Mobile Computing2010，9，3： | 1 |
| 17 | The surface fractal investigation on the carbon nanotubes modified by the adsorption of PAA显示文摘 | Hou Qingfeng Lu Xiancai Liu Xiandong Hu Baixing Shen Jian | 2005 | Surface and Coating Technology2005，190，23： | 1 |
| 18 | High prevalence of hepatitis B virus pre Smutation and its association with hepatocellular carcinoma in Qidong, China显示文摘 | Cao Z BaiX GuoX | 2008 | ArchViro2008，153，10： | 1 |
| 19 | The layer effect in nutrient removal by two indigenous plant species in horizontal flow constructed wetlands显示文摘 | Shuyuan Liu Baixing Yan Lixia Wang | 2011 | Ecological Engineering2011，，12： | 1 |
| 20 | Effect of Nitrogen and Phosphorus on Tissue Nutrition and Biomass of Freshwater Wetland Plant in Sanjiang Plain,Northeast China显示文摘Nitrogen (4, 10, 20 and 40g/m2) and phosphorus (1.2, 4.8 and 9.6g/m2) were applied to tanks to evaluating the effects of N and P additions on plant tissue nutrition and the biomass of two freshwater wetland plants in the Sanjiang Plain of Northeast China, namely Carex lasiocarpa and Carex meyeriana. For C. lasiocarpa, the total N concentration (TN) of plant tissues under the treatment of 10g/m2 was lower compared with the other N treatments. Initially, C. lasiocarpa exhibited a significant increase of biomass as compared with the control value, reaching the maximum of 31.20±4.01g/tank under the treatment of 10g/m2, and then dropped to 18.02±1.53g/tank under the treatment of 40g/m2. For C. meyeriana, TN generally increased with increasing amount of N applied. High N applied produced more aboveground biomass than low N applied. C. meyeriana, as the accompanying species, can adapt itself to the wetland enriched by N, and it may replace C. lasiocarpa as the dominant species of wetland. The total P concentration (TP) in tissues of C. lasiocarpa increased with P addition. The aboveground biomass of C. lasiocarpa increased with P addition, and it changed from 18.77±3.29g/tank to 46.03±3.95g/tank. However, TP of tissue may accelerate the C. meyeriana development under the treatment of 1.2g/m2. P accumulation contributes to the dominance of C. lasiocarpa but limits the production of C. meyeriana, and the latter may disappear gradually from the wetland enriched by P. Increased input of N and P might have an influence on wetland plant community composition and structure, so the effects of nutrient inputs and accumulation should be considered to protect the freshwater wetland. | XU Zhiguo YAN Baixing HE Yan ZHAI Jinliang SONG Changchun | 2006 | Chinese Geographical Science2006，16，3： | 1 |
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