DOCSLIB.ORG

Seasonal Distribution of Radium Isotopes and Submarine Groundwater Discharge in Laizhou Bay, China

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Seasonal Distribution of Radium Isotopes and Submarine Groundwater Discharge in Laizhou Bay, China Table of Contents for this manuscript 24th Salt Water Intrusion Meeting and the 4th Asia-Pacific Coastal Aquifer Management Meeting, 4 –8 July 2016, Cairns, Australia Seasonal distribution of radium isotopes and submarine groundwater discharge in Laizhou Bay, China Xuejing Wang1, Hailong Li1, Chunmiao Zheng1 1School of Environmental Science and Engineering, South University of Science & Technology of China, Shenzhen, China ABSTRACT Seasonal patterns of radium isotope distributions can be used to indicate changes in SGD through the season. Here we report the distributions of two short-lived radium isotopes (223Ra and 224Ra) measured in the seawater of Laizhou Bay, China in the wet and dry seasons, respectively. The primary source of the radium isotopes is shown to be SGD. The higher inventories of radium isotopes imply higher fluxes of SGD to the bay during the wet season because of the little difference of the activities of these isotopes in SGD with season. The large volume of SGD in wet season confirms its importance in supplying considerable quantity of nutrients. INTRODUCTION As a major component of the hydrological cycle, submarine groundwater discharge (SGD) has been widely recognized as a significant source of water and an important pathway for dissolved material transport from land to ocean. Natural radium isotopes are recognized as ideal tracers for effective and efficient assessment of SGD in local scales and global scales since they are conservative chemically and widely enriched in SGD (Moore, 1996; Kim et al., 2005; Moore et al., 2008; Kwon et al., 2014; Wang et al., 2015). Thus, the seasonal patterns of radium isotope distributions can be used to indicate changes in SGD through the season. Laizhou Bay is subject to a variety of environmental stresses, and hence provides an archetype of a semi-enclosed bay for which ecological functioning is a sensitive issue. Wang et al. (2015) used the salinity and 226Ra as tracers to quantify submarine fresh groundwater discharge and SGD in Laizhou Bay, China. The early study was based on data collected in August 2012, regarding as a wet season. The main purposes of this study were to investigate the spatial and temporal distributions, inventories of radium isotopes (223Ra and 224Ra) in Laizhou Bay and use these seasonal patterns of radium isotope distributions to indicate changes in SGD. METHODOLOGY Laizhou Bay is one of the three bays in the Bohai Sea, China (Figure 1). The natural coastline of Laizhou Bay extends from Qimu Cape to the Yellow River Estuary. Our filed work was launched in wet season (August, 2012) and dry season (May, 2014). We collected 8 coastal groundwater and 6 river water samples along the shoreline and 44 seawater samples (1-2 m below seawater surface) for Ra extraction. Radium isotopes were collected using the methods established by Moore (1976). The short-lived radium isotope 223Ra and 224Ra were counted using a two-channel radium delayed coincidence counting system (RaDeCC), and the expected error of measurements is 10% (Moore and Ralph, 1996). 52 Table of Contents for this manuscript 24th Salt Water Intrusion Meeting and the 4th Asia-Pacific Coastal Aquifer Management Meeting, 4 –8 July 2016, Cairns, Australia Figure 1. Map of Laizhou Bay and sampling stations. RESULTS Figure 2 shows the changes of the activities of 223Ra and 224Ra in seawater and groundwater with salinity in different seasons, respectively. The seawater salinities were higher in the dry season (May, 2014) than in the wet season (August, 2012), where the activities of the radium isotopes were comparatively low. From Fig. 2a and 2b one can observe a more systematic distribution that Ra activity slightly decreases when the salinity increases. The coastal groundwater with relatively high salinity have higher activities of radium isotopes, however there is the little difference of the activities of these isotopes in coastal groundwater with season (Fig. 2c, 2d). Figure 2. Plot of 223Ra and 224Ra versus salinity in seawater (a, b) and groundwater samples (c, d). The horizontal spatial distribution of 223Ra and 224Ra in different seasons was showed in Figure 3. The activity distributions of these two isotopes in different seasons have the 53 Table of Contents for this manuscript 24th Salt Water Intrusion Meeting and the 4th Asia-Pacific Coastal Aquifer Management Meeting, 4 –8 July 2016, Cairns, Australia following similar features: (1) the activities were significantly higher in the west and south than in the east and north of the Bay; and (2) the activities were very high in the estuary and near-shore areas and they generally decreased with the offshore distance. The inventory of Ra in the bay can be estimated based on measurements of radium concentration and water depth at each sampling station. We divided the study area into 91 sections as a representation of the mass-balance box geometry. We calculated the mass of Ra in each box as the product of the area of the corresponding section, the averaged seawater depth and radium concentration within each compartment and derived a total estimated mass for all increments. We obtained the inventories of 223Ra and 224Ra in the dry season are 72.5% and 65.5% of these inventories in the wet season, respectively. Figure 3. Contour plots of 223Ra and 224Ra in wet season (a, b) and dry season (c, d). CONCLUSIONS The activities and the horizontal distributions of two short-lived radium isotopes (223Ra and 224Ra) with season in Laizhou Bay were characterized. The activities and the inventories of these isotopes are significantly higher in the wet season than in the dry season. The primary source of the radium isotopes is shown to be SGD. Because there is the little difference of the activities of these isotopes in SGD with season, the higher inventories of radium isotopes imply higher fluxes of SGD to the bay during the wet season. The larger volume of SGD in wet season confirms its importance in supplying considerable quantity of nutrients because of the enrichment of nutrients in SGD. ACKNOWLEDGEMENT This work is supported by the National Natural Science Foundation of China (Grant No. 41430641) and SUSTC Presidential Postdoctoral Fellowship. We thank Tao Zheng, Zhenfei Xu, Long Xi, Shengtao Zheng and Zhigang Cheng for their field work and laboratory test. 54 Table of Contents for this manuscript 24th Salt Water Intrusion Meeting and the 4th Asia-Pacific Coastal Aquifer Management Meeting, 4 –8 July 2016, Cairns, Australia KEYWORDS: submarine groundwater discharge; radium isotopes; Laizhou Bay REFERENCES Kim, G., J. W. Ryu, H. S. Yang, and S. T. Yun. 2005. Submarine groundwater discharge (SGD) into the Yellow Sea revealed by 228Ra and 226Ra isotopes: Implications for global silicate fluxes, Earth and Planetary Science Letters, 237(1/2): 156-166. Kwon, E.Y., G. Kim, F. Primeau, W.S. Moore, H.M. Cho, T. DeVries, J.L. Sarmiento, M.A. Charette, and Y.K. Cho. 2014. Global estimate of submarine groundwater discharge based on an observationally constrained radium isotope model, Geophysical Research Letters, 41: 8438-8444. Moore, W.S. 1976. Sampling 228Ra in the deep ocean. Deep Sea Research and Oceanographic Abstracts, 23(7): 647-651. Moore, W.S. and R. Arnold. 1996. Measurement of 223Ra and 224Ra in coastal waters using a delayed coincidence counter. Journal of Geophysical Research, 101: 1321-1329. Moore, W.S. 1996. Large groundwater inputs to coastal waters revealed by 226Ra enrichments. Nature, 380(6575): 612-614. Moore, W.S., J. L. Sarmiento, and R.M. Key. 2008. Submarine groundwater discharge revealed by 228Ra distribution in the upper Atlantic Ocean, Nature Geoscience, 1(5): 309-311. Wang, X.J., H.L. Li, J.J. Jiao, D.A. Barry, L. Li, X. Luo, C.Y. Wang, L. Wan, X.S. Wang, X.W. Jiang, Q. Ma, and W.J. Qu. 2015. Submarine fresh groundwater discharge into Laizhou Bay comparable to the Yellow River flux. Scitific Reports, 5, 8841. Contact Information: Xuejing Wang, South University of Science & Technology of China, Environmental Science and Engineering, No 1088, Xueyuan Rd., Nanshan District, Shenzhen, 518055, China; Email: [email protected]; [email protected] 55.
Load more

Recommended publications
  • Chemical and Isotopic Constraints on Evolution of Groundwater Salinization in the Coastal Plain Aquifer of Laizhou Bay, China ⇑ D.M
    Journal of Hydrology 508 (2014) 12–27 Contents lists available at ScienceDirect Journal of Hydrology journal homepage: www.elsevier.com/locate/jhydrol Chemical and isotopic constraints on evolution of groundwater salinization in the coastal plain aquifer of Laizhou Bay, China ⇑ D.M. Han a, , X.F. Song a, Matthew J. Currell b, J.L. Yang c, G.Q. Xiao c a Key Laboratory of Water Cycle & Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China b School of Civil, Environmental and Chemical Engineering, RMIT University, Melbourne 3001, Australia c Tianjin Institute of Geology and Mineral Resources, Tianjin 300170, China article info summary Article history: A hydrochemical-isotopic investigation of the Laizhou Bay Quaternary aquifer in north China provides Received 19 June 2013 new insights into the hydrodynamic and geochemical relationships between freshwater, seawater and Received in revised form 28 September 2013 brine at different depths in coastal sediments. Saltwater intrusion mainly occurs due to two cones of Accepted 26 October 2013 depression caused by concentrated exploitation of fresh groundwater in the south, and brine water for Available online 1 November 2013 salt production in the north. Groundwater is characterized by hydrochemical zonation of water types This manuscript was handled by Corrado Corradini, Editor-in-Chief, with the (ranging from Ca–HCO3 to Na–Cl) from south to north, controlled by migration and mixing of saline water assistance of Michel Bakalowicz, Associate bodies with the regional groundwater. The strong adherence of the majority of ion/Cl ratios to mixing Editor lines between freshwater and saline water end-members (brine or seawater) indicates the importance of mixing under natural and/or anthropogenic influences.
    [Show full text]
  • The Influences of Yellow River Flow-Sediment Regulation Field Experiments on the Salinity in the Bohai Sea
    The Influences of Yellow River Flow-Sediment Regulation Field Experiments on the Salinity in the Bohai Sea 1 1 1 2 Xinyan Mao , Wensheng Jiang , Peng Zhao , Huiwang Gao 1 Physical Oceanography Laboratory, Ocean University of China 2 College of Environmental Science and Engineering, Ocean University of China Introduction The Bohai Sea consists of 5 parts: Liaodong Bay, Laizhou Bay, Bohai Bay, Bohai Strait, and central area. It is typically a shallow shelf sea, where the mean depth is only 18m, and the deepest place is at the Bohai Strait, not more than 80m. The variation of salinity in the Bohai Sea is influenced by freshwater flux, including runoff, evaporation, and precipitation. Besides, the exchange with North Yellow Sea is also very important. In the last 20 years, the evaporation is more than annual-mean value (Lin, et al. 2001 ). It is reported by Wu that the mean salinity has increased from 28 to 30 in last 35 years before 2000, and North Yellow Sea water's strong intrusion often took place (Wu, et al. 2004). Generally speaking, Yellow River (YR) runoff is the key factor to the salinity in the Bohai Sea, especially in the Laizhou Bay. Because of the booming economy and other anthropogenic influences, the runoff into the sea was less and less these years. All of the factors lead to the increasing salinity. Since 2002, Yellow River Conservancy Commission (YRCC) has conducted a field experiment of flow-sediment regulation every year. The three schedules are, respectively, July 4th -15th, 2002; Sept. 6th -18th' 2003; June 19th - July 13th' 2004.
    [Show full text]
  • Characteristics of the Bohai Sea Oil Spill and Its Impact on the Bohai Sea Ecosystem
    Article SPECIAL TOPIC: Change of Biodiversity Patterns in Coastal Zone July 2013 Vol.58 No.19: 22762281 doi: 10.1007/s11434-012-5355-0 SPECIAL TOPICS: Characteristics of the Bohai Sea oil spill and its impact on the Bohai Sea ecosystem GUO Jie1,2,3*, LIU Xin1,2,3 & XIE Qiang4,5 1 Key Laboratory of Coastal Zone Environmental Processes, Chinese Academy of Sciences, Yantai 264003, China; 2 Shandong Provincial Key Laboratory of Coastal Zone Environmental Processes, Yantai 264003, China; 3 Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China; 4 State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; 5 Sanya Institute of Deep-sea Science and Engineering, Chinese Academy of Sciences, Sanya 572000, China Received April 26, 2012; accepted June 11, 2012; published online July 16, 2012 In this paper, ENVISAT ASAR data and the Estuary, Coastal and Ocean Model was used to analyze and compare characteristics of the Bohai Sea oil spill. The oil slicks have spread from the point of the oil spill to the east and north-western Bohai Sea. We make a comparison between the changes caused by the oil spill on the chlorophyll concentration and the sea surface temperature using MODIS data, which can be used to analyze the effect of the oil spill on the Bohai Sea ecosystem. We found that the Bohai Sea oil spill caused abnormal chlorophyll concentration distributions and red tide nearby area of oil spill. ENVISAT ASAR, MODIS, oil spill, chlorophyll, sea surface temperature Citation: Guo J, Liu X, Xie Q.
    [Show full text]
  • Trade Marks Journal No: 1912 , 29/07/2019 Class 99 1495370 10
    Trade Marks Journal No: 1912 , 29/07/2019 Class 99 1495370 10/10/2006 ANNCO, INC. 7 TIMES SQUARE, NEW YORK, NY 10036 USA. A CORPORATION ORGANISED AND EXISTING UNDER THE LAWS OF THE STATE OF DELAWARE, USA, Address for service in India/Attorney address: INVENTURE IP G-13, LOWER GROUND FLOOR, NIZAMUDDIN WEST, NEW DELHI-110013 Proposed to be Used DELHI Cl.14;PRECIOUS METALS AND THEIR ALLOYS AND GOODS IN PRECIOUS METALS OR COATED THEREWITH, NOT INCLUDED IN OTHER CLASSES; JEWELLERY, PRECIOUS STONES; HOROLOGICAL AND OTHER CHRONOMETRIC INSTRUMENTS Cl.25;CLOTHING AND HEADGEAR, NOT INCLUDING FOOTWEAR 6655 Trade Marks Journal No: 1912 , 29/07/2019 Class 99 SCOTT 2062638 02/12/2010 SCOTT TECHNOLOGIES, INC 4320 Goldmine Road, Monroe, North Carolina, 28110, United States of America . A DELWARE CORPORATION Address for service in India/Attorney address: REMFRY & SAGAR REMFRY HOUSE AT THE MILLENNIUM PLAZA SEC 27, GURGAON 122009, NEW DELHI NATIONAL CAPITAL REGION INDIA Proposed to be Used DELHI Cl.7;PRESSURIZING RESPIRATORY BREATHING AIR CYLINDERS USED BY EMERGENCY PERSONNEL, COMPRISING AN AIR COMPRESSOR ASSEMBLY, DRIVE MOTOR, AIR STORAGE CYLINDERS, AND AUTOMATIC CONTROLS Cl.9;SELF CONTAINED BREATHING APPARATUS: SYSTEM DESIGNED FOR MEASURING AND ANALYZING AIR FOR BREATHING; THERMAL IMAGING CAMERAS; COMMUNICATION DEVICES: SAFETY GARMENTS FOR USE BY FIREFIGHTERS, INDUSTRIAL WORKERS, FIRST RESPONDERS, AND MILITARY PERSONNEL; STATIONARY AND MOBILE AIR CHARGING STATIONS: PERSONNEL LOCATOR SYSTEM; PERSONAL ALERT SAFETY SYSTEM; GAS MASKS; PORTABLE AND FIXED GAS DETECTION, FLAME DETECTION; PROTECTIVE CLOTHING AND HEADGEAR; AIRLINE BREATHING APPARATUS; HEARING PROTECTION; INDUSTRIAL SAFETY EVE PROTECTION: TELECOMMUNICATIONS AND DATA NETWORKING HARDWARE, NAMELY, DEVICES FOR TRANSPORTING AND AGGREGATING VOICE, DATA, AND VIDEO CORNMUNICATIONS ACROSS MULTIPLE NETWORK INFRASTNICTURES AND COMMUNICATIONS PROTOCOLS; ASSET MANAGEMENT AND TRACKING SYSTEMS: SOFTWARE FOR GAS AND FILTER SELECTION MANAGEMENT; FACE MASKS FOR BREATHING (NOT FOR MEDICAL USE); RESPIRATORS..
    [Show full text]
  • Download Article
    International Conference on Remote Sensing, Environment and Transportation Engineering (RSETE 2013) Coastline Remote Sensing Monitoring and Change Analysis of Laizhou Bay from 1978 to 2009 Weifu Sun Weifu Sun, Jie Zhang, Guangbo Ren, Yi Ma, Shaoqi Ni Ocean University of China First Institute of Oceanography Qingdao, China Qingdao, China [email protected] [email protected] Abstract—Coastline of Laizhou Bay was affected by natural [19]; Zhuang Zhenye et al. studied sand shore erosion of and anthropogenic factors and changed severely in the last 31 eastern Laizhou Bay [20]. Overall, the researchers studied only years. It has great significance to monitor Laizhou Bay coastline partial regions of Laizhou Bay, but not gave the whole change for coastal zone protection and utilization. Based on the situation of coastal Change of Laizhou Bay. extraction of coastline information by selecting 8 remotely sensed In this paper, Landsat images in the year of 1978, 1989, images of MSS and TM in the year of 1978, 1989, 2000 and 2009, changes of coastline of Laizhou Bay is analyzed. The results show 2000 and 2009 were collected to extract coastline information that: (1) The whole coastline of Laizhou Bay kept lengthening by human-machine interaction method. Based on the results of with the speed of 6.04 km/a; (2) The coastline moved 959.2241 4 periods’ coastline extraction, this paper analyzed movement km2 seaward and 0.4934 km2 landward, that is, 958.7307 km2 of coastline and transformation of coastline types. Base on the land area increased in total; (3) Transformation of coastline types results, change factors of the coastline are analyzed.
    [Show full text]
  • Cereal Series/Protein Series Jiangxi Cowin Food Co., Ltd. Huangjindui
    产品总称 委托方名称(英) 申请地址(英) Huangjindui Industrial Park, Shanggao County, Yichun City, Jiangxi Province, Cereal Series/Protein Series Jiangxi Cowin Food Co., Ltd. China Folic acid/D-calcium Pantothenate/Thiamine Mononitrate/Thiamine East of Huangdian Village (West of Tongxingfengan), Kenli Town, Kenli County, Hydrochloride/Riboflavin/Beta Alanine/Pyridoxine Xinfa Pharmaceutical Co., Ltd. Dongying City, Shandong Province, 257500, China Hydrochloride/Sucralose/Dexpanthenol LMZ Herbal Toothpaste Liuzhou LMZ Co.,Ltd. No.282 Donghuan Road,Liuzhou City,Guangxi,China Flavor/Seasoning Hubei Handyware Food Biotech Co.,Ltd. 6 Dongdi Road, Xiantao City, Hubei Province, China SODIUM CARBOXYMETHYL CELLULOSE(CMC) ANQIU EAGLE CELLULOSE CO., LTD Xinbingmaying Village, Linghe Town, Anqiu City, Weifang City, Shandong Province No. 569, Yingerle Road, Economic Development Zone, Qingyun County, Dezhou, biscuit Shandong Yingerle Hwa Tai Food Industry Co., Ltd Shandong, China (Mainland) Maltose， Malt Extract， Dry Malt Extract， Barley Extract Guangzhou Heliyuan Foodstuff Co.,LTD Mache Village, Shitan Town, Zengcheng, Guangzhou，Guangdong，China No.3, Xinxing Road, Wuqing Development Area, Tianjin Hi-tech Industrial Park, Non-Dairy Whip Topping\PREMIX Rich Bakery Products(Tianjin)Co.,Ltd. Tianjin, China. Edible oils and fats / Filling of foods/Milk Beverages TIANJIN YOSHIYOSHI FOOD CO., LTD. No. 52 Bohai Road, TEDA, Tianjin, China Solid beverage/Milk tea mate（Non dairy creamer）/Flavored 2nd phase of Diqiuhuanpo, Economic Development Zone, Deqing County, Huzhou Zhejiang Qiyiniao Biological Technology Co., Ltd. concentrated beverage/ Fruit jam/Bubble jam City, Zhejiang Province, P.R. China Solid beverage/Flavored concentrated beverage/Concentrated juice/ Hangzhou Jiahe Food Co.,Ltd No.5 Yaojia Road Gouzhuang Liangzhu Street Yuhang District Hangzhou Fruit Jam Production of Hydrolyzed Vegetable Protein Powder/Caramel Color/Red Fermented Rice Powder/Monascus Red Color/Monascus Yellow Shandong Zhonghui Biotechnology Co., Ltd.
    [Show full text]
  • Inversion of the Degradation Coefficient of Petroleum
    Journal of Marine Science and Engineering Article Inversion of the Degradation Coefficient of Petroleum Hydrocarbon Pollutants in Laizhou Bay Shengmao Huang 1,2, Haiwen Han 1,2, Xiuren Li 1,2, Dehai Song 1,2 , Wenqi Shi 3, Shufang Zhang 3,* and Xianqing Lv 1,2,* 1 Physical Oceanography Laboratory, Qingdao Collaborative Innovation Center of Marine Science and Technology (CIMST), Ocean University of China, Qingdao 266100, China; [email protected] (S.H.); [email protected] (H.H.); [email protected] (X.L.); [email protected] (D.S.) 2 Qingdao National Laboratory for Marine Science and Technology, Qingdao 266100, China 3 National Marine Environment Monitoring Center, Dalian 116023, China; [email protected] * Correspondence: [email protected] (S.Z.); [email protected] (X.L.) Abstract: When petroleum hydrocarbon pollutants enter the ocean, besides the migration under hydrodynamic constraints, their degradation due to environmental conditions also occurs. However, available observations are usually spatiotemporally disperse, which makes it difficult to study the degradation characteristics of pollutants. In this paper, a model of transport and degradation is used to estimate the degradation coefficient of petroleum hydrocarbon pollutants with the adjoint method. Firstly, the results of a comprehensive physical–chemical–biological test of the degradation of petroleum hydrocarbon pollutants in Laizhou Bay provide a reference for setting the degrada- tion coefficient on the time scale. In ideal twin experiments, the mean absolute errors between observations and simulation results obtain an obvious reduction, and the given distributions can be Citation: Huang, S.; Han, H.; Li, X.; inverted effectively, demonstrating the feasibility of the model.
    [Show full text]
  • Safeguarding the Water Reserves of Laizhou Bay Water Management Is a Growing Issue in Laizhou Bay in China
    POLICY BRIEF · JUNE 2018 Safeguarding the water reserves of Laizhou Bay Water management is a growing issue in Laizhou Bay in China. Based on an analysis of the water supply issues and the legal and policy framework in Laizhou Bay, partners in the EU H2020 project ‘SUBSOL – bringing coastal SUBsurface water SOLutions to the market’ have developed a set of recommendations to safe- guard the future supply of freshwater. RECOMMENDATIONS • To ensure implementation of SWS technology, further clarification is needed on the legal framework regarding • Subsurface Water Solutions (SWS) are capable of ad- groundwater management. Additionally, the institutional dressing the water management issues of Laizhou Bay. organization of groundwater management needs to be Moreover, they are low-cost, low-tech and can be adapted clearer. to the local institutional capacity. • In order to ensure an efficient and legitimate process • The local authorities in Laizhou Bay are aware of the ur- with local support and cooperation and a solution that is gency of the issue and positive towards SWS schemes. A adjusted to local needs and resources, dialogue with all pilot project is however needed to demonstrate the ben- stakeholders and authorities prior to decision making and efits and potential of a full scale implementation of SWS implementation is core technologies. SUBSOL has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 642228 WATER SUPPLY CHALLENGES IN SUBSURFACE WATER LAIZHOU BAY SOLUTIONS The Laizhou Bay area suffers from the most severe saltwa- Subsurface Water Solutions (SWS) offer a series of solu- ter intrusion in China.
    [Show full text]
  • Habitat Suitability Analysis of Suaeda Heteroptera in Wetlands of Laizhou West Bank Based On
    Aquatic Science and Technology ISSN 2168-9148 2016, Vol. 4, No. 1 Habitat Suitability Analysis of Suaeda heteroptera in Wetlands of Laizhou West Bank Based on GIS Kai Shao Collage of Marine Life Science, Ocean University of China, Qingdao 266003, China Jing Ji Collage of Marine Life Science, Ocean University of China, Qingdao 266003, China Bin Zhou (Corresponding author) Collage of Marine Life Science, Ocean University of China, Qingdao 266003, China E-mail: [email protected] Received: June 7, 2015 Accepted: October 10, 2015 Published: December 12, 2015 doi:10.5296/ast.v4i1.8710 URL: http://dx.doi.org/10.5296/ast.v4i1.8710 Abstract Along with the development of marine economy, west bank of Laizhou Bay, efficient and economical core area, suffered some degree of damage, and local habitats of Suaeda heteroptera were correspondingly affected. Using geographic information systerms (GIS) technology and HIS model, analysis on habitat suitability of S. heteroptera in tital wetlands of Lanzhou west bank. The results show that: Although high soil salinity in the study area, and serious petroleum and heavy metal pollution, the regional environmental conditions meet the basic survival and growth requirement of S. heteroptera, because its strong salt tolerance, as well as petroleum and heavy metal absorption and accumulation ability, consequently, S. heteroptera can be relatively normally grow in this habitat. Generally, Laizhou Bay is a highly or moderate suitable area for S. heteroptera growth. Keywords: Suaeda heteroptera, Habitat suitability assessment, Lanzhou Bay, Restoration technology 8 Aquatic Science and Technology ISSN 2168-9148 2016, Vol. 4, No. 1 1. Introduction Habitat, biological survival environment, is the sum of the life activities space conditions (May, 1976).
    [Show full text]
  • The Study of the Transformation of Caofeidian Coastline by GIS
    International Journal of Computational Intelligence Systems and Applications. Volume 5, Issue 1, (2017) 31-33 http://www.cayley-nielson.com/ijcisa/ The study of the transformation of CaoFeiDian coastline by GIS Hui Chao1*, Yuejiao Niu1, Yingqi Li1, Ruihan Cheng1 1North China University of Science and Technology, Tangshan, Hebei 063009, China *Corresponding author E-mail: [email protected] Abstract In this paper, we made a preliminary study of Marine function zoning index method、overlay analysis, comprehensive analysis under the support of GIS spatial analysis method and established the index evaluation model application rules. According to the Bohai Sea area remote sensing image date、natural environment investigation and social economic date, we analysis Marine function zoning of Bohai Sea region comprehensively through the remote sensing image interpretation method and analysis of GIS spatial analysis method. These research methods that apply to Bohai Sea region function zoning further analysis the rule of Bohai zoning and sea area use as well as revealed the main types and distribution characteristics of the area. It provided scientific and effective decision support for the sustainable utilization of the Bohai Sea area. Key words: Remote sensing technology; GIS spatial analysis; Marine function zoning; Bohai Sea region. 1. Introduction Marine functional zoning is according to the sea and adjacent land natural resources, environment and geographic location, and considering the ocean exploitation and utilization present situation and the need of economic and social development, and drawn with a certain leading function, rational development and utilization of resources, can play the best benefit area. Marine functional zoning is our country in the late 1980s the basic work of a Marine management, its core is the Marine functional zoning, work due to the complex ocean function attributes, which involves many factors, lack of effective quantitative analysis of the functional partition method.
    [Show full text]
  • Marine Pollution Bulletin 96 (2015) 502–507
    Marine Pollution Bulletin 96 (2015) 502–507 Contents lists available at ScienceDirect Marine Pollution Bulletin journal homepage: www.elsevier.com/locate/marpolbul Baseline Distribution, enrichment and sources of thallium in the surface sediments of the southwestern coastal Laizhou Bay, Bohai Sea ⇑ Wen Zhuang a,b, Xuelu Gao a, a Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong 264003, China b College of City and Architecture Engineering, Zaozhuang University, Zaozhuang, Shandong 277160, China article info abstract Article history: The concentrations of thallium (Tl) in the surface sediments of the southwestern coastal Laizhou Bay and Available online 27 April 2015 the rivers it connects were determined. In riverine sediments, the Tl concentrations ranged from 0.34 to 0.76 lggÀ1 in summer; in autumn, the corresponding data were 0.35–1.08 lggÀ1. In marine sediments, Keywords: the Tl concentrations ranged from 0.36 to 0.58 lggÀ1 in summer; and from 0.30 to 0.56 lggÀ1 in Heavy metal autumn. The grain size, Al and Fe oxides were major factors affecting Tl distribution. Tl in the surface sed- Potential harmful element iments of the studied area was mainly from the natural input with the non-natural input as a subsidiary Priority pollutant source. The low concentrations of Tl made it hard to cause potential negative environmental effects in Sediment analysis this area. Marine environment Geochemical characteristics Ó 2015 Elsevier Ltd. All rights reserved. Thallium (Tl) is a naturally occurring bioaccumulative element assessment programs because they can reflect environmental qual- widely distributing in the environment.
    [Show full text]
  • (Cfcs) and Tritium to Improve Conceptual Model of Groundwater flow in the South Coast Aquifers of Laizhou Bay, China
    HYDROLOGICAL PROCESSES Hydrol. Process. (2012) Published online in Wiley Online Library (wileyonlinelibrary.com) DOI: 10.1002/hyp.8450 Using chlorofluorocarbons (CFCs) and tritium to improve conceptual model of groundwater flow in the South Coast Aquifers of Laizhou Bay, China D. M. Han,1* X. F. Song,1 Matthew J. Currell2 and Maki Tsujimura3 1 Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China 2 School of Civil, Environmental and Chemical Engineering, RMIT University, Melbourne, Australia 3 Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan Abstract: The southern coastal plain of Laizhou Bay, which is the area most seriously affected by salt water intrusion in north China, is a large alluvial depression, which represents one of the most important hydrogeological units in the coastal region of northern China. Chlorofluorocarbons (CFCs, including CFC-11, CFC-12 and CFC-113) and tritium were used together for dating groundwater up to 50 years old in the study area. There are two cones of depression, caused by intensive over-exploitation of fresh groundwater in the south and brine water in the north. The assigned CFC apparent ages for shallow groundwater range from 8ato>50 a. A binary mixing model based on CFC-113 and CFC-12 concentrations in groundwater was used to estimate fractions of young and pre-modern water in shallow aquifers and to identify groundwater mixing processes during saltwater intrusion. Discordance between concentrations of different CFC compounds indicate that shallow groundwater around the Changyi cone of depression is vulnerable to contamination.
    [Show full text]