Exploring Wetland Dynamics in Large River Floodplain Systems with Unsupervised Machine Learning: a Case Study of the Dongting Lake, China
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Acknowledgements
Acknowledgements First of all, I sincerely thank all the people I met in Lisbon that helped me to finish this Master thesis. Foremost I am deeply grateful to my supervisor --- Prof. Ana Estela Barbosa from LNEC, for her life caring, and academic guidance for me. This paper will be completed under her guidance that helped me in all the time of research and writing of the paper, also. Her profound knowledge, rigorous attitude, high sense of responsibility and patience benefited me a lot in my life. Second of all, I'd like to thank my Chinese promoter professor Xu Wenbin, for his encouragement and concern with me. Without his consent, I could not have this opportunity to study abroad. My sincere thanks also goes to Prof. João Alfredo Santos for his giving me some Portuguese skill, and teacher Miss Susana for her settling me down and providing me a beautiful campus to live and study, and giving me a lot of supports such as helping me to successfully complete my visa prolonging. Many thanks go to my new friends in Lisbon, for patiently answering all of my questions and helping me to solve different kinds of difficulties in the study and life. The list is not ranked and they include: Angola Angolano, Garson Wong, Kai Lee, David Rajnoch, Catarina Paulo, Gonçalo Oliveira, Ondra Dohnálek, Lu Ye, Le Bo, Valentino Ho, Chancy Chen, André Maia, Takuma Sato, Eric Won, Paulo Henrique Zanin, João Pestana and so on. This thesis is dedicated to my parents who have given me the opportunity of studying abroad and support throughout my life. -
Report on the State of the Environment in China 2016
2016 The 2016 Report on the State of the Environment in China is hereby announced in accordance with the Environmental Protection Law of the People ’s Republic of China. Minister of Ministry of Environmental Protection, the People’s Republic of China May 31, 2017 2016 Summary.................................................................................................1 Atmospheric Environment....................................................................7 Freshwater Environment....................................................................17 Marine Environment...........................................................................31 Land Environment...............................................................................35 Natural and Ecological Environment.................................................36 Acoustic Environment.........................................................................41 Radiation Environment.......................................................................43 Transport and Energy.........................................................................46 Climate and Natural Disasters............................................................48 Data Sources and Explanations for Assessment ...............................52 2016 On January 18, 2016, the seminar for the studying of the spirit of the Sixth Plenary Session of the Eighteenth CPC Central Committee was opened in Party School of the CPC Central Committee, and it was oriented for leaders and cadres at provincial and ministerial -
A Case Study for the Yangtze River Basin Yang
RESERVOIR DELINEATION AND CUMULATIVE IMPACTS ASSESSMENT IN LARGE RIVER BASINS: A CASE STUDY FOR THE YANGTZE RIVER BASIN YANG XIANKUN NATIONAL UNIVERSITY OF SINGAPORE 2014 RESERVOIR DELINEATION AND CUMULATIVE IMPACTS ASSESSMENT IN LARGE RIVER BASINS: A CASE STUDY FOR THE YANGTZE RIVER BASIN YANG XIANKUN (M.Sc. Wuhan University) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHYLOSOPHY DEPARTMENT OF GEOGRAPHY NATIONAL UNIVERSITY OF SINGAPORE 2014 Declaration I hereby declare that this thesis is my original work and it has been written by me in its entirety. I have duly acknowledged all the sources of information which have been used in the thesis. This thesis has also not been submitted for any degree in any university previously. ___________ ___________ Yang Xiankun 7 August, 2014 I Acknowledgements I would like to first thank my advisor, Professor Lu Xixi, for his intellectual support and attention to detail throughout this entire process. Without his inspirational and constant support, I would never have been able to finish my doctoral research. In addition, brainstorming and fleshing out ideas with my committee, Dr. Liew Soon Chin and Prof. David Higgitt, was invaluable. I appreciate the time they have taken to guide my work and have enjoyed all of the discussions over the years. Many thanks go to the faculty and staff of the Department of Geography, the Faculty of Arts and Social Sciences, and the National University of Singapore for their administrative and financial support. My thanks also go to my friends, including Lishan, Yingwei, Jinghan, Shaoda, Suraj, Trinh, Seonyoung, Swehlaing, Hongjuan, Linlin, Nick and Yikang, for the camaraderie and friendship over the past four years. -
Dongting Lake Newsletter, July 2020
Dongting Lake Newsletter July 2020 - Issue #5 © FAO © Protection and Management Progress Review of 2019 Winter GCP/CPR/043/GFF Highlights Officer of the Asia-Pacific Regional Office of Food and Agriculture Organization of the United Nations 1. The fourth Project Steering Committee meeting was (FAO), Yao Chunsheng, Global Environment Facility successfully held in Changsha. (GEF) Project Officer of the FAO China Office, Deng Weiping, Director of Finance Department of Hunan 2. The Management Plan of four Nature Reserves in Province, Tang Yu, Director of Department of Dongting Lake has been drafted. Ecological Environment of Hunan Province, other members of the Project Steering Committee, and 3. The capacity building for staff of Project Management representatives of project technical experts participated Office (PMO) and four Nature Reserves has been gradually in the meeting. enhanced. The agenda of the meeting includes: 1) review the project 4. The international and domestic exchange activities and work in 2019; 2) arrange the work plan and budget trainings have been carried out. for 2020; 3) discuss financial management, mid- term evaluation of the project, and promotion of 5. Publicity and promotion activities proceed steadily. project achievements; 4) review the progress made by community co-management; 5) discuss the compilation 1. PROJECT MANAGEMENT of teaching materials for biodiversity conservation in Dongting Lake. 1.1 Fourth Meeting of Project Steering Participants also carried out on-site investigation Committee on ecological fishery in Qingshan Island and bird- friendly comprehensive agriculture co-management In January 2020, the fourth Project Steering model in Yueyang County. Committee meeting of the project was held in Changsha, Hunan Province. -
Numerical Simulation and Optimal System Scheduling on Flood Diversion and Storage in Dongting Basin, China
Available online at www.sciencedirect.com Procedia Environmental Sciences 12 ( 2012 ) 1089 – 1096 2011 International Conference on Environmental Science and Engineering (ICESE 2011) Numerical Simulation and Optimal System Scheduling on Flood Diversion and Storage in Dongting Basin, China Xue Lianqing1, Hao Zhenchun2, Liu Xiaoqun2 and Li Yongkun2 1State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Hohai University Wen Tian College, Nanjing, 210098, China 2State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing, 210098, China [email protected] Abstract In recent years a large number of floods occurred in the Dongting Lake region, China, and flood prevention and control have become a focus in the middle Yangtze River. How to use the dispersed sub-fast-flood storage area in Dongting basin rationally and control water level and flow process will improve flood prevention ability. In this paper an improved systematic flood simulation method coupling one and two-dimensional hydraulic model is established aiming at special area. The flood evolution process, different flood discharge scale, flood storage and embanking effect are simulated according to the changing spatial gate position and extra flood magnanimity for the typical hydrologic years. An optimized scheduling scheme by using the parallel algorithm and numerical computing method is preferred in different flood periods. The research results indicate the optimized flood diversion gate and operation scheme in three shunts river system will directly control the water level in the whole lake region. The research results provide practical basis for systematic floods control and is helpful to assess flood disaster in Yangtze River basin. -
Speciation of Trace Elements in Sediments from Dongting Lake, Central China
Water Pollution VIII: Modelling, Monitoring and Management 119 Speciation of trace elements in sediments from Dongting Lake, central China Z. G. Yao1, Z. Y. Bao1, 2, P. Gao3, J. L. Zhang1, Y. P. Guo1, Z. J. Hu3 & B. L. Li3 1State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Wuhan, People’s Republic of China 2Faculty of Earth Sciences, China University of Geosciences, Wuhan, People’s Republic of China 3Xinjiang Bureau of Geology and Mineral Exploration and Development, Urumqi, People’s Republic of China Abstract A BCR three-step sequential extraction procedure, with a sediment reference material (BCR701), was used in order to assess the environmental risk of Cd, Cr, Cu, Ni, Pb, and Zn in contaminated sediment from Dongting Lake. The total metal content was determined as well. Dongting Lake, the second largest fresh-water lake in China, contains three China wetlands of international importance. In the Dongting Lake sediments, the trace elements (Cu, Zn, Cr, and Ni) analyzed are mainly distributed in a residual phase at an average percentage greater than 60% of the total metals, especially 79% for Cr and 90% for Ni; but Pb in Fe/Mn oxhydroxides phase (59%) and Cd in soluble species and carbonates (51%). The potential risk to the lake’s water contamination was highest in East Dongting Lake based on the calculated contamination factors. Therefore, there is an urgent need to protect Dongting Lake from anthropogenic sources of pollution to reduce environmental risks. Keywords: Dongting Lake, sediment, geo-accumulation index, speciation, contamination factor, trace elements, major elements. -
Variation of Water Level in Dongting Lake Over a 50-Year Period
Journal of Hydrology 525 (2015) 450–456 Contents lists available at ScienceDirect Journal of Hydrology journal homepage: www.elsevier.com/locate/jhydrol Variation of water level in Dongting Lake over a 50-year period: Implications for the impacts of anthropogenic and climatic factors ⇑ ⇑ Yujie Yuan, Guangming Zeng , Jie Liang , Lu Huang, Shanshan Hua, Fei Li, Yuan Zhu, Haipeng Wu, Jiayu Liu, Xiaoxiao He, Yan He College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China article info summary Article history: Understanding the variation regularity of water level and the potential drivers can provide insights into Received 27 January 2015 lake conservation and management. In this study, inter- and inner-annual variations of water level in Received in revised form 10 March 2015 Dongting Lake during the period of 1961–2010 were analyzed to determine whether anthropogenic or Accepted 7 April 2015 climatic factor should be responsible for the variations. The results showed that water level decreased Available online 12 April 2015 significantly during the period of 1961–1980, while increased significantly during the period of 1981– This manuscript was handled by Geoff Syme, Editor-in-Chief 2002 at the 5% significance level. However, the variation trend of water level after 2002 did not reach a significant level. The variation in the dry season was more obviously than that in the wet season. The date when water level was firstly below 24 m during the period of 2003–2010 appeared about Keywords: Water level 27 days earlier than usual, and the date was even advanced to mid-September in 2006. -
The Runoff Variation Characteristics of Dongting Lake, China
The runoff variation characteristics of Dongting Lake, China • Dehua Mao* • Chang Feng • Hunan Normal University, China *Corresponding author • Hui Zhou • Hunan Normal University/Hydrology and Water Resources Survey Bureau of Hunan Province, China • Guangwei Hu • Hunan Industry University • Zhengzui Li • Hydrology and Water Resources Survey Bureau of Hunan Province, China • Ruizhi Guo • Hunan Normal University, China Abstract Resumen Mao, D., Feng, C., Zhou, H., Hu, G., Li, Z., & Guo, R. (March- Mao, D., Feng, C., Zhou, H., Hu, G., Li, Z., & Guo, R. (marzo- April, 2017). The runoff variation characteristics of Dongting abril, 2017). Características de la variación de escurrimiento del Lake, China. Water Technology and Sciences (in Spanish), 8(2), lago Dongting, China. Tecnología y Ciencias del Agua, 8(2), 77 77-91. 77-91. The runoff variation characteristics of Dongting Lake Se analizaron las características de la variación de escurrimiento were analyzed by applying the methods of concentration del lago Dongting mediante la aplicación de los métodos de grado degree, concentration period, Mann-Kendall trend test, de concentración, periodo de concentración, análisis de tendencias and variation coefficient. The analysis showed that: 1) The de Mann-Kendall y coeficiente de variación. El análisis mostró runoff concentration period of Dongting Lake occurs mainly que 1) el periodo de concentración de escurrimiento del lago between June and July of each year, with the peak time in Dongting ocurre principalmente entre junio y julio de cada año, late June–early July, and the composite vector directions presentándose el tiempo máximo entre finales de junio y principios in concentration period range from 103.2° to 190.2°; 2) The de julio y las direcciones de los vectores compuestos en el periodo de runoff variation coefficient ranges from 0.194 to 0.761, which concentración van de 103.2° a 190.2°; 2) el coeficiente de variación indicates the instability of runoff. -
Hydrological Drought in Dongting Lake Area (China) After the Running of Three Gorges Dam and a Possible Solution
water Article Hydrological Drought in Dongting Lake Area (China) after the Running of Three Gorges Dam and a Possible Solution Yizhuang Liu 1,2,3, Shu-Qing Yang 4 , Changbo Jiang 1,2,3,*, Yuannan Long 1,2,3 , Bin Deng 1,2,3 and Shixiong Yan 1 1 School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha 410114, China; [email protected] (Y.L.); [email protected] (Y.L.); [email protected] (B.D.); [email protected] (S.Y.) 2 Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, Changsha 410114, China 3 Key Laboratory of Water-Sediment Sciences and Water Disaster Prevention of Hunan Province, Changsha 410114, China 4 School of Civil, Mining and Environmental Engineering, University of Wollongong, Wollongong 2522, Australia; [email protected] * Correspondence: [email protected]; Tel.: +86-0731-8525-8437 Received: 24 August 2020; Accepted: 25 September 2020; Published: 28 September 2020 Abstract: Dongting Lake is located at the downstream of Three Gorges Dam (TGD) and the hydrological drought is intensified after the impoundment of TGD as the dry period has been extended from 123 days/year before the operation of TGD (1981–2002) to 141 days/year (2003–2016) on average. Particularly, the Dongting Lake’s water shortage becomes very severe. To solve the problem caused by upstream dams, an innovative flood control scheme (IFCS) was introduced, and its feasibility of application in Dongting Lake is studied using the hydrodynamic module of Mike 21. The results show the IFCS can effectively convert the peak discharge of floodwater in wet seasons into water resources in dry seasons as the IFCS could significantly increase the usable water storage of the lake. -
The 7-Decade Degradation of a Large Freshwater Lake in Central
Environ. Sci. Technol. 2005, 39, 431-436 freshwater is stored in these lakes, but also because they The 7-Decade Degradation of a provide habitats for aquatic fauna and flora (3). However, Large Freshwater Lake in Central freshwater lake watersheds have been focal points of human settlement due to their suitable environment for development Yangtze River, China and food production (4, 5); therefore, the freshwater lakes have been disturbed by human activities to a greater extent ² ,² as compared to terrestrial ecosystems. The alteration of lake SHUQING ZHAO, JINGYUN FANG,* habitats has been found to influence biodiversity for fresh- SHILI MIAO,³ BEN GU,³ SHU TAO,§ water lake systems (6, 7). How freshwater lakes change under CHANGHUI PENG,| AND ZHIYAO TANG² the impacts of human activities and what ecological con- Department of Ecology, College of Environmental Sciences, sequences the lake alterations bring to biodiversity have and Key Laboratory for Earth Surface Processes of the Ministry received increasing attention. Unfortunately, there have been of Education, Peking University, Beijing, China, 100871, surprisingly few studies conducted at the decadal time scale, Everglades Division, South Florida Water Management especially from a heavily populated developing region. District 3301, Gun Club Road, West Palm Beach, Florida 33406, Department of Resources Dongting Lake was once the largest freshwater lake in ∼ 2 and Geoenvironmental Sciences, College of Environmental China, reaching its maximum surface area of 6300 km in Sciences, and Key Laboratory for Earth Surface Processes of 1825 (8). However, the present lake surface area is ap- the Ministry of Education, Peking University, proximately 40% (∼2500 km2) of its maximum size. -
2 FUJIMOTO.Ec6
Naoya FUJIMOTO : Diversity of Agricultural Water Management 23 農工報 44 23~65, 2005 Diversity of Agricultural Water Management - An Analysis of the Policies in the People’s Republic of China - FUJIMOTO Naoya* Contents Ⅰ Introduction ………………………………………23 2 Measure of Analysis ……………………………37 1 Trends in Agricultural Water Policies of the 3 Results …………………………………………42 World ……………………………………………23 Â Case Studies ………………………………………49 2 Aim of this Study ………………………………31 1 Policy for Saving Water-usage or Reducing 3 Basic Information on China ……………………31 Water Leakage …………………………………49 À Agricultural Water and Organizations 2 Policy for Better Management of Concerned in China ………………………………32 Agricultural Water ………………………………56 1 Organizations Concerned with Agricultural 3 Water Trade in Zhejiang Province ……………58 Water ……………………………………………32 4 Results …………………………………………62 2 Agricultural Water in China ……………………33 Ã Conclusion ………………………………………62 3 Water Law and Related Regulation in China …34 References ……………………………………………63 Á Analysis of Web-site Articles ……………………37 摘要 …………………………………………………65 1 Hypothesis ………………………………………37 I Introduction water pricing. Moreover, the OECD has addressed the idea that irrigation water is consumed unproductively 1 Trends in Agricultural Water Policies of the World and inefficiently. Tackling water shortages will become one of the Although European countries and the United States biggest international agendas by the middle of the 21st of America (USA) have argued this issue for a long century. How to manage water resources is affected by time, it is essential to discuss this issue for Asian international politics, because these resources are countries, the main operators of irrigation systems in the connected to worldwide population growth, lack of world. Asian countries should also join the discussion natural resources and damage to the environment caused to better understand the issues as an international by economic growth and inconsiderate use of water. -
Sino-Italian Cooperation Program Environmental Training Community 中-意合作计划 环境培训园地 Newsletter 工作通讯
Sino-Italian Cooperation Program Environmental Training Community 中-意合作计划 环境培训园地 newsletter 工作通讯 06 Italian Ministry for the Environment, Land and Sea Italian Ministry for the Environment, Editorial Board < Land and Sea Corrado Clini, ı< >< ı i 意大利环境领土与海洋部 Italian Ministry for the Environment, Land and Sea Via Cristoforo Colombo, 44 Ignazio Musu, 00147 Rome Italy TEN Center, Venice International University Maria Lodovica Gullino, Venice International University Agroinnova, University of Turin TEN Center, Thematic Environmental Networks 威尼斯国际大学 Edited by Isola di San Servolo TEN Center 30100 Venice Italy Thematic Environmental Networks, Tel. 电话 +39 041 2719525-524 Venice International University Fax 传真 +39 041 2719510 Italian Ministry for the Environment, Land and Sea [email protected] Project coordination Sino-Italian Cooperation Program Alessandra Fornetti for Environmental Protection Gianluca Ghiara 中国-意大利环境保护合作项目管理办公室 Ilda Mannino Program Management Offi ce, Beijing 北京项目管理办公室 Grapich design Oriental Kenzo-Offi ce Building Room 25 a-d peppe clemente, studio cheste, venezia 48 Dongzhimen Waidajie, 100027 Beijing, P.R.China English proofreading 中国北京市东直门外大街48 Lisa Negrello, Venezia 号东方银座写字楼25 a-d 房间 邮编: 100027 Chinese translation Tel. 电话 0086-10-51600666, 84476610 Dr. Mike Peng, Beijing Fax 传真 0086-10-84476455 [email protected] Contributions by [email protected] Maria Chiara Alberton, Selina Angelini, Lisa Botter, Program Management Offi ce, Shanghai Federico Breda, Franco Cecchi, Marco G. Cremonini, 上海项目管理办公室 Alessandra Fornetti, Gianluca Ghiara, Hong-Ying Hu, Room 1901-1906, Yu-Dong Song, Carol Maignan, Ilda Mannino, The Center, 989, Changle Rd. Massimiliano Montini, Nicolò Meschini, Gilberto Muraro, Shanghai, 200031 P.R. China Paolo Pavan, Augusto Pretner, Liangshu Qi, 上海市长乐路989号世纪商贸广场1901-1906室 Patrizia Scalas, Luz Sainz, Denise Tonolo, Luigi Torriano, 中意环保项目上海办公室 Francesca Zennaro Tel.