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Aquifer Arsenic Cycling Induced by Seasonal Hydrologic Changes Within the Yangtze River Basin Michael V
Boise State University ScholarWorks Geosciences Faculty Publications and Presentations Department of Geosciences 4-5-2016 Aquifer Arsenic Cycling Induced by Seasonal Hydrologic Changes within the Yangtze River Basin Michael V. Schaefer Stanford University Samantha C. Ying University of California - Riverside Shawn G. Benner Boise State University Yanhua Duan China University of Geosciences Yanxin Wang China University of Geosciences See next page for additional authors This document was originally published in Environmental Science & Technology by the American Chemical Society under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html). Copyright restrictions may apply. doi: 10.1021/acs.est.5b04986 Authors Michael V. Schaefer, Samantha C. Ying, Shawn G. Benner, Yanhua Duan, Yanxin Wang, and Scott eF ndorf This article is available at ScholarWorks: http://scholarworks.boisestate.edu/geo_facpubs/298 This is an open access article published under an ACS AuthorChoice License, which permits copying and redistribution of the article or any adaptations for non-commercial purposes. Article pubs.acs.org/est Aquifer Arsenic Cycling Induced by Seasonal Hydrologic Changes within the Yangtze River Basin † ‡ § ∥ ∥ Michael V. Schaefer, Samantha C. Ying, Shawn G. Benner, Yanhua Duan, Yanxin Wang, † and Scott Fendorf*, † Earth System Science Department, Stanford University, Stanford, California 94305, United States ‡ Environmental Sciences Department, University of California - Riverside, Riverside, California 92521, United States § Department of Geosciences, Boise State University, Boise, Idaho 83725, United States ∥ State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan, Hubei 430074, People’s Republic of China *S Supporting Information ABSTRACT: Consumption of groundwater containing >10 μgL−1 arsenic (As) adversely impacts more than 100 million people worldwide. -
Holocene Environmental Archaeology of the Yangtze River Valley in China: a Review
land Review Holocene Environmental Archaeology of the Yangtze River Valley in China: A Review Li Wu 1,2,*, Shuguang Lu 1, Cheng Zhu 3, Chunmei Ma 3, Xiaoling Sun 1, Xiaoxue Li 1, Chenchen Li 1 and Qingchun Guo 4 1 Provincial Key Laboratory of Earth Surface Processes and Regional Response in the Yangtze-Huaihe River Basin, School of Geography and Tourism, Anhui Normal University, Wuhu 241002, China; [email protected] (S.L.); [email protected] (X.S.); [email protected] (X.L.); [email protected] (C.L.) 2 State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710061, China 3 School of Geograpy and Ocean Science, Nanjing University, Nanjing 210023, China; [email protected] (C.Z.); [email protected] (C.M.) 4 School of Environment and Planning, Liaocheng University, Liaocheng 252000, China; [email protected] * Correspondence: [email protected] Abstract: The Yangtze River Valley is an important economic region and one of the cradles of human civilization. It is also the site of frequent floods, droughts, and other natural disasters. Conducting Holocene environmental archaeology research in this region is of great importance when studying the evolution of the relationship between humans and the environment and the interactive effects humans had on the environment from 10.0 to 3.0 ka BP, for which no written records exist. This Citation: Wu, L.; Lu, S.; Zhu, C.; review provides a comprehensive summary of materials that have been published over the past Ma, C.; Sun, X.; Li, X.; Li, C.; Guo, Q. -
Space-Time Variation and Spatial Differentiation of COVID-19
International Journal of Geo-Information Article Space-Time Variation and Spatial Differentiation of COVID-19 Confirmed Cases in Hubei Province Based on Extended GWR Yanwen Liu 1,2 , Zongyi He 1,* and Xia Zhou 2 1 School of Resource and Environmental Sciences, Wuhan University, Wuhan 430079, China; [email protected] 2 School of Resources and Environment Science and Engineering, Hubei University of Science and Technology, Xianning 437100, China; [email protected] * Correspondence: [email protected] Received: 30 July 2020; Accepted: 3 September 2020; Published: 8 September 2020 Abstract: Clarifying the regional transmission mechanism of COVID-19 has practical significance for effective protection. Taking 103 county-level regions of Hubei Province as an example, and taking the fastest-spreading stage of COVID-19, which lasted from 29 January 2020, to 29 February 2020, as the research period, we systematically analyzed the population migration, spatio-temporal variation pattern of COVID-19, with emphasis on the spatio-temporal differences and scale effects of related factors by using the daily sliding, time-ordered data analysis method, combined with extended geographically weighted regression (GWR). The results state that: Population migration plays a two-way role in COVID-19 variation. The emigrants’ and immigrants’ population of Wuhan city accounted for 3.70% and 73.05% of the total migrants’ population respectively; the restriction measures were not only effective in controlling the emigrants, but also effective in preventing immigrants. COVID-19 has significant spatial autocorrelation, and spatio-temporal differentiation has an effect on COVID-19. Different factors have different degrees of effect on COVID-19, and similar factors show different scale effects. -
How Is Collectivism Possible in Rural China?
121111 Highlights in yellow, need to confirm the details Highlights in green, pending addition How is collectivism possible in rural China? Lau Kin Chi and Du Jie The 1979 Reform policy The reform policy of 1979 ushered in the household responsibility system, allegedly going along with the sentiments of the peasants who defied the policies from above that imposed the collectivist people’s commune. The fingerprint oath taken by 18 villagers of Xiaogang Village ( 小岗村, literally Small Mount Village) in Anhui Province in Dec 1978 became a well known historical exhibit, illustrating the determination of peasants to divide up collective assets for more effective management of production. Blood fingerprint oath by 18 villagers of Xiaogang Village for Household Responsibility System In contrast, another fingerprint oath, also by peasants, was taken in precisely an opposite spirit. It was the case of the people’s commune members of Zhoujiazhuang (周家庄, literally Village of the Zhou Family). The oath was taken by the members in November 1982, appealing for the retention of the people’s commune. 1 Fingerprint oath by members of Zhoujiazhuang Production Brigade No.1 appealing for retention of the people’s commune Thus, we see that the mainstream policy of Reform effectively and largely dismantled the people’s commune system that had been in place for over a decade during the Cultural Revolution. Partly as an imperative policy from above, and partly as an aspiration of peasant households to claim their “own” right of usage over a piece of land, over 90% of rural assets that were collectively owned and managed by the village community have been de-collectivized. -
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 -
Assessment and Analysis of Groundwater Overexploitation in China
E3S Web of Conferences 228, 01008 (2021) https://doi.org/10.1051/e3sconf/202122801008 CCGEES 2020 Assessment and analysis of groundwater overexploitation in China Zepeng Li1, Xin He1, *, Chuiyu Lu1 1China Institute of Water Resources and Hydropower Research, Beijing 100038, China Abstract: As an important water resource, groundwater has been unreasonably developed for a long time in our country, causing a lot of problems. This paper combines the data from the national groundwater monitoring stations and the groundwater depth data collected locally to statistics and analysis of groundwater overexploitation across the country. Especially in key plains, through the water level variation method. The research results are compared and verified with national authoritative data such as Groundwater Dynamics Monthly Report and predecessors' records in the literature, revealing the current key areas of groundwater overexploitation, and clarifying the importance and urgency of groundwater governance in the future. This study also put forward some suggestions of groundwater overexploitation. groundwater monitoring data recorded in the China 1 Introduction Geological Environment Monitoring Groundwater Yearbook (hereinafter referred to as the yearbook) in 2006 Groundwater resources play an indispensable role in and 2016[6]. The groundwater monitoring wells in the social and economic development, food security, and Yearbook are spatially uneven in terms of regional drinking water safety. In China water resources are distribution. This spatial distribution is directly related to unevenly distributed in the north and south, and the total the utilization of groundwater in the local area: Areas amount of water resources is deficient seriously. As a where groundwater is used frequently are also densely reliable source of water supply, groundwater plays an distributed with observation wells. -
Advances for Earth's Critical Zone Research in Jianghan Plain, Central
Goldschmidt2019 Abstract Advances for Earth’s Critical Zone Research in Jianghan Plain, central China JUNQI LI1, TENG MA1*, YAO DU1 1School of Environmental Studies, China University of Geosciences, Wuhan, 430074, China ([email protected], *correspondence: [email protected],[email protected]) Introduction Critical Zone (CZ) science is one of the hottest research fields in earth sciences. International researchers mainly promote the development of CZ science through Critical Zone Observatory (CZO), which serves for economic development and ecological protection. In China, CZ studies are still in the initial stage. Jianghan Plain is not only an important part of the Yangtze River economic zone, but also one of the areas most seriously affected by large water conservancy projects in China. On the basis of several years of CZ survey, we have established a systematic monitoring network in Jianghan Plain, covering various elements of the CZ, especially water, biology and greenhouse gas. In the design of monitoring network, we not only considered the influence of water conservancy projects, but also the occurrence characteristics of nutrient elements and heavy metals. In the near future, more efforts will be made to make more online monitoring data and integrate systematic accomplishments. Base on the systematic monitoring of CZ, the final objective is to enrich the theory and method of investigation and research on Earth’s Critical Zone in China and provide a strong theoretical and methodological support for Great Protection of the Yangtze River. Design and construction of Critical Zone Exploration Network (CZEN) Jianghan Plain is densely distributed with water conservancy projects of different sizes. -
Empirical Analysis of Agricultural Cultural Resources Value Evaluation Under DEA Model
Computers, Materials & Continua CMC, vol.65, no.2, pp.1411-1424, 2020 Empirical Analysis of Agricultural Cultural Resources Value Evaluation under DEA Model Wei Liang1, 2, Yang Ni3, Tingyi Li1, Xuejiao Lin1 and Soo-Jin Chung1, * Abstract: Agricultural culture is a productive activity about education and management. It aims at high efficiency and high quality, uses technology as its means, and takes nature as its carrier. Agricultural cultural resources are the product of the rapid development of modern economy. It promotes the development of the national economy and profoundly affects people's production and life. DEA model, also known as data envelope analysis method, is an algorithm that uses multiple data decision units for input and output training to obtain the final model. This article explains the concept and basic characteristics of agricultural culture. Through questionnaire surveys and expert interviews, we collected development data, screened human, material, and financial data, and calculated information on economic and social resources. On this basis, this paper establishes the evaluation index of agricultural culture based on DEA model. Then, through empirical analysis from a specific perspective, it can be concluded that increasing human, material and financial input can achieve economic and social benefits. Generally speaking, cultural investment can promote the development of the industry. The research results of this paper laid a theoretical foundation for the development of agricultural culture, and put forward a development model focusing on technology development, improving investment efficiency, and investing in material resources. Keywords: Agricultural culture, DEA model, empirical analysis, development model. 1 Introduction At present, various regions are actively developing various forms of creative agriculture. -
Lawrence Berkeley National Laboratory Recent Work
Lawrence Berkeley National Laboratory Recent Work Title Analysis of the functional gene structure and metabolic potential of microbial community in high arsenic groundwater. Permalink https://escholarship.org/uc/item/5kh1v4wq Authors Li, Ping Jiang, Zhou Wang, Yanhong et al. Publication Date 2017-10-01 DOI 10.1016/j.watres.2017.06.053 Peer reviewed eScholarship.org Powered by the California Digital Library University of California Analysis of the functional gene structure and metabolic potential of microbial community in high arsenic groundwater Author links open overlay panel PingLi a ZhouJiang b YanhongWang a YeDeng cJoy D.Van Nostrand d TongYuan d HanLiu a DazhunWei a JizhongZhou d Show more https://doi.org/10.1016/j.watres.2017.06.053 Get rights and content Highlights • Samples were divided into low and high arsenic (As) groups based on geochemical parameters and microbial functional structures. • Genes arsC, arrA, dsrA/B, ureC, amoA, hzo, mcrA, hdrB were correlated with As, 2− + SO4 , NH4 or CH4, respectively. • 2− + As, TOC, SO4 , NH4 , ORP and pH were important factors shaping the functional microbial community structure. • Alkaline and reducing conditions could be associated with As enrichment in groundwater. • An overall picture of functional microbial communities in high As aquifers is provided. Abstract Microbial functional potential in high arsenic (As) groundwater ecosystems remains largely unknown. In this study, the microbial community functional composition of nineteen groundwater samples was investigated using a functional gene array (GeoChip 5.0). Samples were divided into low and high As groups based on the clustering analysis of geochemical parameters and microbial functional structures. The results showed that As related genes (arsC, arrA), sulfate related genes (dsrA and dsrB), nitrogen cycling related genes (ureC, amoA, and hzo) and methanogen genes (mcrA, hdrB) in groundwater samples were correlated with As, 2− + SO4 , NH4 or CH4 concentrations, respectively. -
The Impact of Elections on the Village Structure of Power: the Relations Between the Village Committees and the Party Branches GUO ZHENGLIN with THOMAS P
Journal of Contemporary China (2004), 13(39), May, 257–275 The Impact of Elections on the Village Structure of Power: the relations between the village committees and the Party branches GUO ZHENGLIN with THOMAS P. BERNSTEIN* Village committee elections are one of the major innovations of the reform era. Electoral processes have elicited much scholarly and public attention. Less attention has been devoted to studying the impact of this innovation on the relations between the elected village committee chair persons and the appointed Party secretaries. This article shows that conflicts can arise between the two because the basis of their legitimacy and authority differs. A concrete instance of conflict is control over collective economic resources and financial decisions. The field research on which much of this article is based was done in southern Guangdong, where villages tend to be quite industrialized and wealthy. In these villages, control had hitherto been vested in the secretaries. Now, town leaders had to adjudicate jurisdictional disputes between village committees and the Party branches. Often they preferred to side with the latter, since secretaries were likely to be more responsive to their superiors than elected village chiefs. A solution to these conflicts that is now being widely adopted in rural China is to require that Party secretaries run for the post of village committee chair, thereby in effect merging the two institutions. Introduction Village elections have rightly aroused much attention among scholars within and without China. A substantial literature examines the electoral process—its fairness, openness, and competitiveness.1 Increasing attention is also being devoted to the * Guo Zhenglin is professor of Political Science at Zhongshan University, Guangzhou, and director of the Institute for Local Government. -
Spatial and Temporal Changes of Lake Wetlands in Jianghan Plain After the Implementing of ‘Thirty-Six-Word Policy’
Available online at www.sciencedirect.com Procedia Environmental Sciences 10 ( 2011 ) 2574 – 2580 2011 3rd International Conference on Environmental Science and Information Application Technology (ESIAT 2011) Spatial and temporal changes of lake wetlands in Jianghan Plain after the implementing of ‘thirty-six-word policy’ Wang Chengchenga, Wang Hongzhi and Xarapat Ablat Faculty of Urban and Environmental Science, Huazhong Normal University, Wuhan, China a [email protected] Abstract After the cataclysm of the Yangtze River in 1998, the State Council put forward the “thirty-six-word policy” for harnessing large rivers and lakes. Jianghan Plain is one of the main areas to get harnessed according to the policy. Based on the CAS land use databases of 1995, 2000, 2005 and 2010, the spatial changes information of lakes in Jianghan Plain were captured and analyzed under the ARCGIS platform or by indexes of landscape ecology. The results show that: From 1995 to 2010, the area of lake wetlands has been grown constantly; Transitions from farmland and unused land to lake were dominant for the increase of lake area, while so were the transitions reversely; Lake wetlands were divided into two categories (lake and pond) to be analyzed according to the area of every lake wetland patch, lakes mainly increased in the area while ponds mainly increased in the number of patches. Ponds are not as curved as lakes in shape and more dispersed than lakes; Lakes became less curved and concentrated with the augment of the area of lake wetlands. The shape of pond wetlands changed little and its distribution became a little concentrated with the increasing number of pond wetlands. -
Architecture, Space, and Society in Chinese Villages, 1978-2018
Wesleyan University The Honors College Constructing Nostalgic Futurity: Architecture, Space, and Society in Chinese Villages, 1978-2018 by Juntai Shen Class of 2018 A thesis submitted to the faculty of Wesleyan University in partial fulfillment of the requirements for the Degree of Bachelor of Arts with Departmental Honors from the College of Social Studies and with Departmental Honors in Art History Middletown, Connecticut April, 2018 Table of Contents Acknowledgement - 2 - [Introduction] A Playground for Minds and Actions Modern Chinese Villages - 4 - [Chapter 1] Houses as a Mirror of the Boom and Bust Liangjia’s Spontaneous Path of Architectural Development - 27 - [Chapter 2] A Socialist Paradise on Earth Huaxi’s Story of Socialist Great Revival - 59 - [Chapter 3] Intermingled Sounds of Chickens and Dogs Wencun’s Cultural and Aesthetic Experiment - 103 - [Epilogue] The Presence of Nostalgic Futurity - 135 - Research Bibliography - 144 - Image Appendix - 154 - 1 Acknowledgement This project would not have come to fruition were it not for the help of a host of gracious people along the way. Firstly, I am deeply indebted to my thesis advisors, Professors Joseph Siry and Ying Jia Tan. Professor Siry’s infinite knowledge of architectural history and global culture, as well as his incredible work efficiency and sharp criticism pushed me to become a better thinker, writer, and human being. Professor Tan’s high academic standard, and more importantly, his belief in my idea and vision gave me confidence through all the ups and downs during the writing process. I will always treasure my conversations with both about China, villages, buildings, arts, and beyond.