|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Pharmaceuticals and personal care products (PPCPs) in the freshwater aquatic environment显示文摘Pharmaceuticals and personal care products(PPCPs)are a unique group of emerging environmental contaminants,due to their inherent ability to induce physiological effects in human at low doses.An increasing number of studies has confirmed the presence of various PPCPs in different environmental compartments,which raises concerns about the potential adverse effects to humans and wildlife.Therefore,this article reviews the current state-of-knowledge on PPCPs in the freshwater aquatic environment.The environmental risk posed by these contaminants is evaluated in light of the persistence,bioaccumulation and toxicity criteria.Available literature on the sources,transport and degradation of PPCPs in the aquatic environment are evaluated,followed by a comprehensive review of the reported concentrations of different PPCP groups in the freshwater aquatic environment(water,sediment and biota)of the five continents.Finally,future perspectives for research on PPCPs in the freshwater aquatic environment are discussed in light of the identified research gaps in current knowledge. | Anekwe Jennifer Ebele Mohamed Abou-Elwafa Abdallah Stuart Harrad | 2017 | Emerging Contaminants2017，3，1： | 44 |
| 2 | TRANSPORT OF THE SUSPENDED SEDIMENT IN THE CHANGJIANG ESTUARY显示文摘The Changjiang River is characterized by the enormous volume of runoff and the great amount of sediment load with remarkable seasonal variation. The annual runoff sometimes is respondent to the amount of sediment load, and sometimes not. The amount of monthly sediment load after the month of the maximum runoff is larger than those before the month. The sediment concentration and net quantity of sediment transport in the vicinity of the river mouth varies greatly in time between the ebb and flood, spring and neap, and dry seasons and flood seasons. The three bifurcations also have differences in concentration and net quantity in space. Even in the same bifurcation they have differences in and out of the sand bar. At present, the North Channel is the main passage for water and sediment load emptying into the sea from the Changjiang River. More than 50 percent of the sediments from the river basin are deposited nearby the South Branch entrance and the main depositional area is situated in subaqueous delta off the South Channel. Between 122°30’E and 123°E is an important boundary for eastward sediment dispersion from which the suspended sediment are dispersed towards the east by south. | SHEN Huanting Institute of Esturaine and Coastal Research, East China Normal University, Shanghai, China LI Jiufa Institute of Esturaine and Coastal Research, East China Normal University, Shanghai, China ZHU Huifang Institute of Esturaine and Coastal Research, East China Normal University, Shanghai, China HAN Mingbao Institute of Esturaine and Coastal Research, East China Normal University, Shanghai, China ZHOU Fugen Department of Marine Geology, Tongji Univcrsity, Shanghai, China | 1992 | International Journal of Sediment Research1992，7，3： | 37 |
| 3 | U.S. GEOLOGICAL SURVEY PROGRAMS AND INVESTIGATIONS RELATED TO SOIL AND WATER CONSERVATION显示文摘The U.S. Geological Survey has a rich tradition of collecting hydrologic data, especially for fluxes of water and suspended sediment, that provide a foundation for studies of soil and water conservation. Applied and basic research has included investigations of the effects of land use on rangelands, croplands, and forests; hazards mapping; derivation of flood and drought frequency, and other statistics related to streamflow and reservoir storage; development and application of models of rainfall-runoff relations, chemical quality, and sediment movement; and studies of the interactive processes of overland and channel flow with vegetation. Networks of streamgaging stations and (or) sampling sites within numerous drainage basins are yielding information that extends databases and enhances the ability to use those data for interpretive studies. | W. R. OSTERKAMP and J. R. GRAY Research Hydrologist, U. S. Geological Survey, 1675 W. Anklam Road, Tucson, AZ 85745 U. S. A. Hydrologist, U. S. Geological Survey, 415 National Center, Reston, VA 20192 U. S. A. | 2001 | International Journal of Sediment Research2001，16，3： | 22 |
| 4 | VARIATION OF REE PATTERNS IN EARLY PRECAMBRIAN SEDIMENTS——THEORETICAL STUDY AND EVIDENCE FROM THE SOUTHERN MARGIN OF THE NORTH CHINA CRATON显示文摘Recent work has proved that Taylor’s model is inapplicable to the southern margin of the North China craton. The oxidation-reduction model for variation of REE patterns in the early Precambrian sediments is developed from theoretical study by appealing to the hard and soft acids and bases (HSAB) theory. The new model is in good consistency with the fact in this area, and will most likely be applicable to other areas. | 陈衍景 富士谷 | 1991 | Chinese Science Bulletin1991，36，13： | 22 |
| 5 | Comprehensive analysis of nitrogen distributions and ammonia nitrogen release fluxes in the sediments of Baiyangdian Lake, China显示文摘The condition of Baiyangdian Lake(BYDL) will improve as the Xiongan New Area evolves and fulfills its role of easing overcrowding and supporting economic growth. Water and sediment samples from BYDL were analyzed to provide information on nitrogen(N) contamination in BYDL. The mean ammonium N(NH_4^+-N), nitrate N, and total N concentrations in the water samples were 0.36, 0.12, and 2.22 mg/L, respectively, and the ranges were 0.003–8.38, 0.06–0.30,and 1.25–10.34 mg/L, respectively. The N concentrations in water gradually increased from the north to the south of BYDL. Sediment at 90% of the sampling sites was in or above the moderately contaminated class(1000–2000 mg/kg) defined in US Environmental Protection Agency total N pollution standards. Positive NH_4^+-N fluxes were found for 28 of the 34 sediment core samples, so the potential for NH_4^+-N being released from sediment was relatively high. The NH_4^+-N fluxes were 5.35–48.76 mg/m^2/day, and the mean and maximum fluxes were 8.71 and 48.76 mg/m^2/day, respectively. Benthic organisms will be affected more by NH_4^+-N and NH_3·H_2O in the surface sediment pore water(mean concentrations 4.93 and 0.13 mg/L, respectively) than by the other forms of N. | Yaoyao Zhu Xin Jin Wenzhong Tang Xin Meng Baoqing Shan | 2019 | Journal of Environmental Sciences2019，31，2： | 20 |
| 6 | SEDIMENT TRANSPORTED BY DEBRIS FLOWTO THE LOWER JINSHA RIVER显示文摘The lower Jinsha River is an area with the highest sediment yield in the upper Yangze basin. Itcovers only 9.27% of the total area of the basin but supplies about 40% of the total sediment recordedat the Yichang Hydrological Station. The present study shows that besides strong slope erosion andwaste discharge from engineering works, debris-flow transport is an important source of the sedimentload in the river. Based on field investigation and measurement, the annual sediment transport intothe lower Jinsha River basin was estimated at 1.54×10 to 67.07×10. | CUI Peng1 WEI Fangqiang2 and LI Yong3(1 Prof. Dongchuan Debris Flow Observation and Research Station. Institute of Mountain Hazards and Environment,CAS, Chengdu 610041. China.)(2 Ph.D. student, Institute of Mountain Hazards and Environment, CAS. and Sou | 1999 | International Journal of Sediment Research1999，14，4： | 19 |
| 7 | Estimations of primary production and export production in the South China Sea based on sediment trap experiments显示文摘The results of time series sediment trap experiments in the South China Sea show that particulate organic carbon (POC) fluxes are influenced by the monsoons. The increase of productivity in the northern South China Sea is mainly due to northeast monsoon while in the central South China Sea the influence of southwest monsoon becomes more prominent. The annual primary production and export production calculated based on POC fluxes are 53 0-63 4 and 10 32-12 93 gC·m -2·a -1, respectively. The enhancement of POC flux during monsoon period suggest that higher palaeoproductivity or organic carbon accumulation rate in glacial age in the South China Sea might be the result of strengthening of the monsoons. | Jianfang Chen Lianfu Zheng M. G. Wiesner Ronghua Chen Yulong Zheng H. K. Wong | 1998 | Chinese Science Bulletin1998，43，7： | 18 |
| 8 | Trend analysis of sediment grain size and sedimentary process in the central South Yellow Sea显示文摘With the method of trend analysis of sediment grain size, the sediment transport trend of the fine-grained sediments area in the central South Yellow Sea was studied. The results demonstrated that there is a sedimentation center around the point of 123.4° E, 35.1°N, and the sediments outside the center are transported to it. The patterns of sediment transportation and deposition in the Yellow Sea should be controlled by cyclonic circulation (including the Yellow Sea Cold Water Mass) and cold water gyre. The study also showed that the method of trend analysis of sediment grain size has prospective utilization in the fine-grained sediment deposited area on large-scale continental shelf. | SHI Xuefa CHEN Chunfeng LIU Yanguang REN Hong WANG Huiyan | 2002 | Chinese Science Bulletin2002，47，14： | 17 |
| 9 | Depth distribution of Moho and tectonic framework in eastern Asian continent and its adjacent ocean areas显示文摘With the results of interpretation of seismic sounding profiles acquired in the past 30 years in the continent of China and its adjacent countries and ocean regions, such as Russia, Ka-zakhstan, Japan, India, Pakistan, Philippine ocean basin, Pacific and Indian Ocean, we compiled a 2D Moho distribution map for the continent and its adjacent areas of eastern Asia. From the fea-tures of depth distribution and undulation of Moho, it is suggested that the eastern Asian region can be divided into 18 gradient belts with different sizes, 18 crustal blocks, 20 sediment basins and depression zones. The depth of Moho varies smoothly in each block, while the boundary (separat-ing different blocks) delineates the abrupt variation of Moho depth. Then, some subjects,such as oregen and sediment basin, fault system and rift, plate boundary, ocean-continent coupling and tectonic framework, are discussed based on the distribution gradient belts and block partition fea-tures of Moho depth in the eastern Asia and its adjacent regions. | 滕吉文 曾融生 闫雅芬 张慧 | 2003 | Science China Earth Sciences2003，46，5： | 16 |
| 10 | 黄河2009年调水调沙期间河口水动力及悬沙输移变化特征显示文摘根据2009年7月黄河第九次调水调沙期间和结束后在黄河口两个站位观测的水文泥沙资料,对调水调沙期间和结束后河口的水动力和悬沙分布特征进行了对比分析,并对潮周期内悬沙输移过程进行了探讨。结果表明:调水调沙期间相比于结束后,落潮动力加强,涨潮动力有所减弱,尤其在水体表层表现明显,河口切变锋类型不同,其出现时间长度亦不同;调水调沙期间含沙量较大,垂向分布较复杂,而结束后含沙量低,垂向梯度变化较小;此外,调水调沙期间河口悬沙在输移过程中以沉降作用为主,并在涨急和落急时刻伴随着底沙的再悬浮,而结束后悬沙浓度降低幅度较大,泥沙再悬浮作用较强。 | 刘锋 陈沈良 周永东 彭俊 陈一强 任韧希子 | 2010 | 泥沙研究2010，35，6： | 16 |
| 11 | Environmental mechanism of magnetic susceptibility changes of lacustrine sediments from Lake Hulun, China显示文摘The changes of magnetic susceptibility (κ) are correlated with those of corresponding sedimentological, geochemical, mineralogical and biological results, which verifies that κ can be taken as one of the environmental proxies. However, usually the exact origin of magnetic signal is poorly understood, and is difficult to relate with the environmental evolution. Magnetic properties of material derived from the catchment and sedimentary environment may affect the accumulation, preservation, or authigenesis and diagenesis of magnetic minerals. In the Lake Hulun region in Inner Mongolia, it is found that muddy sediments, deposited during high water level period (corresponding to humid climate), have comparatively high κ values. In contrast, the sandy sediments, deposited during low water level period (corresponding to arid climate), have low κ values. Detailed rock magnetic investigation confirms that detrital magnetite derived from volcanic rocks in the catchment exists in both muddy and sandy | 胡守云 王苏民 Erwin Appel 吉磊 | 2000 | Science China Earth Sciences2000，43，5： | 16 |
| 12 | Toxicities and risk assessment of heavy metals in sediments of Taihu Lake, China, based on sediment quality guidelines显示文摘The occurrence, toxicities, and ecological risks of five heavy metals(Pb, Cu, Cd, Zn and Ni) in the sediment of Taihu Lake were investigated in this study. To evaluate the toxicities caused by the heavy metals, the toxicities induced by organic contaminants and ammonia in the sediments were screened out with activated carbon and zeolite. The toxicities of heavy metals in sediments were tested with benthic invertebrates(tubificid and chironomid).The correlations between toxicity of sediment and the sediment quality guidelines(SQGs)derived previously were evaluated. There were significant correlations(p < 0.0001) between the observed toxicities and the total risk quotients of the heavy metals based on SQGs,indicating that threshold effect level(TEL) and probable effect level(PEL) were reliable to predict the toxicities of heavy metals in the sediments of Taihu Lake. By contrast, the method based on acid volatile sulfides(AVS) and simultaneously extracted metals(SEM),such as ∑SEM/AVS and ∑SEM-AVS, did not show correlations with the toxicities. Moreover,the predictive ability of SQGs was confirmed by a total predicting accuracy of 77%. Ecological risk assessment based on TELs and PELs showed that the contaminations of Pb, Cu, Cd and Zn in the sediments of Taihu Lake were at relatively low or medium levels. The risks caused by heavy metals in the sediments of northern bay of the lake, which received more wastewater discharge from upper stream, were higher than other area of the lake. | Yanfeng Zhang Yuwei Han Jinxi Yang Lingyan Zhu Wenjue Zhong | 2017 | Journal of Environmental Sciences2017，29，12： | 16 |
| 13 | Impact on the Yangtze (Changjiang) Estuary from its drainage basin: Sediment load and discharge显示文摘This paper focuses on the sediment transport and freshwater discharging from upper Yangtze drainage basin downstream, primarily on the basis of multiyear hy-drological data collected from three major hydrological gauge stations (Yichang, Hankou and Datong). Data indicate highest sediment load in Yichang (5.6×108 t/a), lowest in Hankou (5.1×108t) and second highest in Datong (5.4×108 t). This fluctuations are identical with what has been observed from the annual flood season. About one thirds of the sediment load are trapped in the middle Yangtze River course, where meandering river pattern prevails; rest of them are directly transported to the river mouth area via lower Yangtze River channel, where the river is typically confined by the exposed base rock and almost none is being trapped, instead, minor being drained to the mainstream from the local tributaries. To recognize this sediment delivery and river flow media is vital, because it can highlight morphologic/topographic correlation between the | CHEN Zhongyuan & ZHAO YiwenState Key Laboratory for Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China Department of Geography, East China Normal University, Shanghai 200062, China | 2001 | Chinese Science Bulletin2001，46，S1： | 16 |
| 14 | Environmental changes during early-middle Holocene from the sediment record of the Chaohu Lake,Anhui Province显示文摘A typical lake sediment core is obtained from the Chaohu Lake in the lower reaches of the Yangtze River,Anhui Province,China.The timing scale is constrained by AMS 14 C dating method.Climate proxies such as pollen and grain size in the core are analyzed to reconstruct the environment changes at this site approximately between 9870 and 2170 cal.a BP.The results indicate that at the research area, the climate in the early-middle Holocene had evolved through 3 stages.From 9870 to 6040 cal.a BP, proxy records show a warm and dry climate with low water levels after the late-glacial period.During this stage,cool and dry events occurred at about 8910 and 6060-6030 cal.a BP.Then,between 6040 and 4860 cal.a BP,the climate was humid and vegetation was more flourishing in the Chaohu Lake Valley.The Holocene Optimum occurred at 5840-5500 cal.a BP in the Chaohu Lake,showing the best condition of water and heat.Elm Decline occurred at the period of 5380-4930 cal.a BP.Since 4860 cal.a BP,the climate was warm and dry through 2170 cal.a BP as shown in both pollen spectrum and grain-size histories.Two obvious dry events occurred in 3760 and 2170 cal.a BP,respectively.At 2170 cal.a BP,the water level of the Chaohu Lake reached the lowest as the lakebed possibly exposed. Such lake sediment observations are consistent with the historical records in this area. | XinYuan Wang GuangSheng Zhang Li Wu XiHui Zhang EnLou Zhang XiaYun Xiao QingFeng Jiang | 2008 | Chinese Science Bulletin2008，53，S1： | 15 |
| 15 | Seasonal,neap-spring variation of sediment concentration in the joint area between Yangtze Estuary and Hangzhou Bay显示文摘An analysis of variations in suspended sediment concentration (SSC) over one year is presented for the joint area between the Yangtze Estuary and the Hangzhou Bay. Results suggest that daily SSC presents periodic variations, which correspond with seasonal and neap-spring tidal cycle. SSCs are higher during the winter season and during spring tides when compared with summer and neap-tide conditions. Furthermore, data indicate that wave and tidal currents are the two dominant factors affecting SSC. Although the Yangtze River discharges abundant sediments to the study area, it does not directly affect concentration variations. But the changing path of the Yangtze River plume plays a certain role in the seasonal variations of SSC. Finally, the calculation of bottom stresses suggests that SSC is a function of both wave and tide-induced resuspension. | 陈沈良 | 2001 | Science China Chemistry2001，44，S1： | 15 |
| 16 | Long-chain alkenones in Hotong Qagan Nur Lake sediments and its paleoclimatic implications显示文摘The long-chain alkenones present in the shallow sediment of Hotong Qagan Nur Lake in China are reported. According to the similarity of compositions and distributions of the alkenones determined commonly in the sediment section to those of marine sediment, it is reasonably referred that the alkenones might also originate from Prymnesiophyceae. ln addition, the parameter U37k'of alkenone is in positive correlation to δ18O values of authigenic calcium and magnesium minerals. This indicates that the parameter U37k'of long-chain alkenone is also available to indicate paleoclimate of high-salinity alkaline lake. | Guoying Sheng Keqin Cai Xuexian Yang Jialan Lu Guodong Jia Ping’an Peng Jiamo Fu | 1999 | Chinese Science Bulletin1999，44，3： | 15 |
| 17 | Sequential fractionation of reactive phosphorus in the sediment of a shallow eutrophic lake——Donghu Lake, China显示文摘IntroductionSedimentphosphorushasbeenthefocusofanumberofstudiesduetoitsroleintheeutrophicationoflakes.Phosphorusfractionsinse?.. | FU Yong\|qing, ZHOU Yi\|yong\+*, LI Jian\|qiu (Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China) | 2000 | Journal of Environmental Sciences2000，12，1： | 15 |
| 18 | The Bedload Movement in the Changjiang Estuary显示文摘- Sandwaves in the Changjiang estuary were measured with a shallow sediment profiler and an echosounder from 1978 to 1988. The data, together with grain size and bedform of sediment indicates that the bedload movement by rolling and saltation is of great significance to sediment transport and is the principal factor responsible for sandwave and sandbody development in the estuary. The sandwaves were found well-developed, which is related to the tidal range and the velocity of ebb current. However, the further growth is restricted by strong flood current prevailing in the estuary. Because of the significant bedload, the sandbodies shift obviously and frequently, and sometimes the exchange of position occurs between the sandbodies and tidal channels. As a result, ships are regularly forced to change their navigation course. | Li Jiufa, Shi Weirong, Shen Huanting Xu Haigen and Doeke Eisma Associate Professor, Institute of Estuarine & Coastal Research (1ECR), East China Normal University, Shanghai200062 Professor, IECR, East China Normal University, Shanghai 200062 Professor, Netherlands Institute for Sea Research, P. O. Box 59 1790 AB, Den Burg, Texel, The Netherlands | 1993 | China Ocean Engineering1993，8，4： | 15 |
| 19 | Lake sediment resuspension and caused phosphate release——a simulation study显示文摘Intact sediment cores and wet/dried surficial sediments sampled from the two sublakes in Taihu Lake, Meiliang Bay and Wuli Lake, were incubated in the laboratory to determine the effects of resuspension on internal phosphorus loading by simulating different resuspension events. Soluble reactive phosphorus (SRP) release from undisturbed core sediment sampled in the Meiliang Bay and Wuli Lake in July 1998 was 1 53 mg/m 2 and 2 24 mg/m 2 within 4 days, respectively. However during one hour experimental simulation of resuspension, SRP increased by 0 041 mg/L and 0 077 mg/L in the above cores, which indicate that a typical resuspension event in the lake would be accompanied by the release of 10 77 mgSRP/m 2 and 23 1 mgSRP/m 2, respectively. The internal phosphorus loading induced by resuspension is estimated to be 8-10 times greater than the release from undisturbed sediment. SRP release from the dried sediments during simulation of resuspension was mainly dependent on the disturbing intensity. Only when the wind strength gets to certain level, the influence of wind speed on phosphorus release appears significant, indicating that an exchangeable P pool, capable of altering equilibrium conditions in the lake areas, is built up under strongly wind exposed resuspension events. | Fan, CX Zhang, L Qu, TC | 2001 | Journal of Environmental Sciences2001，13，4： | 14 |
| 20 | The wind-water two-phase erosion and sediment-producing processes in the middle Yellow River basin, China显示文摘Based on data from the middle Yellow River basin, a wind-water two-phase mechanism for erosion and sediment-producing processes has been found. By using this mechanism, the extremely strong erosion and sediment yield in the study area can be better explained. The operation of wind and water forces is different in different seasons within a year. During winter and spring, strong wind blows large quantities of eolian sand to gullies and river channels, which are temporally stored there. During the next summer, rainstorms cause runoff that contains much fine loessic material and acts as a powerful force to carry the previously prepared coarse material. As a result, hyperconcentrated flows occur, resulting in high-intensity erosion and sediment yield. | 许炯心 | 2000 | Science China Earth Sciences2000，43，2： | 14 |
您所在的机构暂未开通此部分的功能，请联系管理员