Analysis of Major Driving Forces of Ecological Footprint Based on the STRIPAT Model and RR Method:A Case of Sichuan Province,Southwest China

The Ecological Footprint(EF) equation provides useful accounting to analyze the relationship between human activities and the environment.Knowledge of the specific forces driving EF is not fully understood but the STIRPAT model provides a simple framework for decomposing the impact of human activities on environment.We applied the EF model in Sichuan Province,China to assess the impact of human activities.The per capita EF increased by 2 fold in the 14 years between 1995 and 2008,but ecological capacity decreased in the same period,suggesting that the biologically productive area of Sichuan Province is inadequate to sustain human activities.According to the refined STIRPAT model,the hypothesized driving forces of EF include population size(P),GDP per capita(A1),quadratic term of GDP per capita(A2),percentage of GDP from industry(T1) and urbanization rate(T2).However,the multi-collinearity among these drivers could be a substantial problem which may reveal negative effect in the final results.Application of the Ridge Regression(RR) method to fit the STIRPAT model had the advantage of being able to avoid the collinearity among independent variables.The results showed that population is the principal driving force of EF variation in Sichuan Province and that urbanization and industrialization also have a positive association with the EF.Analysis of affluence elasticity(EEA) showed that the relationship betweenEF and economic growth was not curvilinear,suggesting that variation of EF does not follow an Environmental Kuznets Curve relative to economic growth in Sichuan Province.

Geochemistry Characteristics of Granodiorite Porphyry in the Degongniuchang Copper Deposit, Muli, Sichuan Province, China

1 Introduction 1The Sanjiang region in SE Tibet Plateau and NW Yunnan is known to have formed by amalgamation of Gongwanaderived continental blocks and arc terranes as a result of oceanic subduction followed by continental

Factor Analysis on the Factors that Influencing Rural Environmental Pollution in the Hilly Area of Sichuan Province,China

By using factor analysis method and establishing analysis indicator system from four aspects including crop production,poultry farming,rural life and township enterprises,the difference,features,and types of factors influencing the rural environmental pollution in the hilly area in Sichuan Province,China.Results prove that the major factor influencing rural environmental pollution in the study area is livestock and poultry breeding,flowed by crop planting,rural life,and township enterprises.Hence future pollution prevention and control should set about from livestock and poultry breeding.Meanwhile,attention should be paid to the prevention and control of rural environmental pollution caused by rural life and township enterprise production.

The Quantitative Analysis of Land Use Structure Characteristics of County in Mountainous Areas in Sichuan Province of China——A Case Study of Rong County

Based on the data concerning detailed survey on land in the year 2009 and land change in the year 2010 in Rong County,a mountainous region of Sichuan Province,by using quantitative geographical model,we conduct quantitative analysis of the status quo of land use in Rong County in terms of land use diversification,land use centralization,land use combination type,land use geographic significance and comprehensive use degree of land use.The results show some characteristics as follows.Firstly,land use in study area displays prominent characteristic of diversification;there is a high degree of completeness land use type;there is a great similarity among towns.Secondly,there is limited combination number of land use type;mostly the combination number of the towns is 2-3;the holistic function of regional land is fragile;the proportion of farmland areas is big,reaching 40.09%;the land use type of 21 towns is farmland.Thirdly,the towns with prominent characteristic of diversification of land use in Rong County,have low degree of centralization of land use and relatively big combination number of land use type,and vice versa.Fourthly,the type and quantity of agricultural land resources with geographical significance are relatively complete with nothing missing;it abounds in untapped land,but the overall index values of land use are all smaller than 300,with low overall use degree of land.

Suitability Evaluation on the Information Service System of "Agricultural Science and Technology 110" in Sichuan Province, China

Method of fuzzy comprehensive evaluation is used to carry out suitability evaluation on the information service system of "Agricultural Science and Technology 110" in Sichuan Province, China. Analytic hierarchy process (AHP) and expert consultation method are used to determine the evaluation index system and index weight. Suitability effect of the information service system of "Agricultural Science and Technology 110" is taken as the target layer. The five indices at criterion layer are the organizational mode of agricultural information service, the support system of agricultural information resources, the agricultural information transfer system, the capital source of agricultural information service, and the support system of agricultural information service. And the index layer includes the talent team of agent service, the interaction between the subject and object, the accuracy of agricultural information, the convenience of agricultural information transfer, the adequacy of fund, the efficiency in the use of fund, the status of information infrastructure and so on. Evaluation result shows that the information service system of "Agricultural Science and Technology 110" in Sichuan Province is suitable for the rural economic development at present. The major factors restricting the information service system are the lack of continuity, the weak infrastructure of agricultural information infrastructure, and the relatively low education level of agricultural producers. Therefore, we should further explore and improve the operation mechanism of agricultural information service, expand the capital source of agricultural information service, strengthen the construction of agricultural infrastructure, and ensure the continuous operation of information service system.

Oral health status in Sichuan Province: findings from the oral health survey of Sichuan, 2015–2016

To investigate oral health status in the residents of Sichuan Province, southwest China, a cross-sectional study was performed using the latest Oral Health Survey Basic Methods recommended by the World Health Organization. A multistage stratified random cluster-sampling method was used to enroll participants from the following three groups： children aged 3-5 years, adolescents aged 12 years, and people aged 65-74 years. In these three groups, the mean numbers of teeth that were affected by caries were 3.28, 0.86 and 5.13, respectively, resulting in a prevalence of 63.47%, 37.20% and 83.20%, respectively. Relative to the high rate of decayed teeth, the prevalence of fillings was very low in all age groups （0.97%, 7.24% and 5.43%, respectively）, In the 12-year-old adolescent group, only 3.61% had good pit and fissure sealing. In addition, the rate of dental fluorosis was 24.80%, and the Community Fluorosis Index value was 0.39. In the elder group, the community periodontal index was 2.92. The prevalence in the elderly of having lost at least one tooth was 75.54%. Additionally, 4.44% of these participants were edentulous. The incidence of dental prosthesis was 51.75%, the proportion with a removable partial denture, a fixed denture, full dentures, dental implants and an informal fixed bridge was 21.59%, 11.45%, 4.64%, 0 and 16.67%, respectively. In this study, 8.2% of the elderly participants were affected by different types of oral mucosal lesions. Among such lesions, recurrent aphthous ulcers were most prevalent （2.69%） and oral lichen planuses were second （1.6%）. The conclusion presented in this survey is that oral diseases, especially dental caries and periodontal disease, are frequent and common in Sichuan province, China. Moreover, the treatment rate is very low, and primary prevention and treatment options are therefore urgently needed in this population.

Analysis on the Influencing Factors of Low-carbon Economy and Its Mitigation Countermeasures in Sichuan Province

[Objective]The study aimed to analyze the influencing factors of low-carbon economy and its mitigation countermeasures in Sichuan Province.[Method]Taking Sichuan Province as an example,an extended STIRPAT model was established firstly,then the impacts of population,economy and technology on carbon emissions from 2000 to 2009 were analyzed econometrically by using the principal component analysis method.Finally,some corresponding countermeasures to reduce carbon dioxide emissions were put forward.[Result]At present,population scale had the greatest influence on carbon emissions in Sichuan Province,then energy consumption per industrial added value and the proportion of industrial added value to GDP.In addition,the influence of population scale on carbon emissions was still greater than that of population structure,and technical factor also has certain explanatory power on carbon emissions.Some countermeasures,like controlling population growth,advocating low-carbon life style and consumption model,paying more attention to the strategic adjustment of industrial structure to gradually reduce the proportion of high-carbon industries,encouraging energy consumption and emissions reduction plus scientific and technological innovation in a new energy technology filed,could be adopted to reduce carbon dioxide emissions,so as to adjust to the development of low-carbon economy in Sichuan Province.[Conclusion]The research could provide references for the establishment of policies for reducing carbon emissions.

The Evaluation on Ecological Agricultural Development in Sichuan Province on the Basis of Grey Relational Analysis

By using the grey relational model,14 indexes of ecological agricultural development in Sichuan Province from 1997 to 2008 are analyzed.According to the relational degree results,the ecological agricultural development in 12 years can be divided into three stages:the first stage is from 1997 to 2000,with the shape of inverted U;the second stage is from 2001 to 2004,belonging to transition stage with slow growth rate;the third stage is from 2005 to 2008,belonging to the stage of rapid growth.It draws conclusion that per capita grain yield is an important element for evaluating ecological agricultural construction.Besides,reducing the energy consumption of per unit production,improving labor productivity and increasing agricultural science and technology application and input on agricultural infrastructure construction are the engine for developing Sichuan ecological agriculture.

A new species of Triplophysa Rendahl （Cypriniformes, Nemacheilidae） from Sichuan Province, China

Triplophysa yajiangensis sp. nov. is described from the upper and middle reaches of the Yalong River, Yangtze Basin, Ganzi Prefecture, Sichuan Province China. This new species can be distinguished from other congeneric species by the following characters： body surface smooth and scaleless; lateral line complete; caudal peduncle compressed and tapered slightly; lower jaw shovel-shaped; head shorter than caudal peduncle; dorsal-fin origin anterior to pelvic-fin origin and closer to tip of snout than to caudal-fin base, last unbranched ray hard; pelvic-fin reaches or exceeds anus; posterior chamber of gas bladder absent; intestine spiral type with 3-5 winding coils.

Systematic Analysis and Optimization of the Agricultural Structure in Ethnic Regions in Northwest Sichuan Province

Based on introducing the basic conditions of the ethnic regions in northwest Sichuan Province,the thesis analyzes its agricultural development status,which can be classified into two aspects--rich natural resources and slow agricultural economic growth.Through the analysis on the agricultural structure of northwest Sichuan Province,it is found that the production efficiency and economic benefits of crop planting in this region are low,animal husbandry,as a major industry in pastoral region,sees high production efficiency,the agricultural production is still at the resource-oriented stage;its agricultural structure is still the farming-pastoral structure relying mainly on animal husbandry,planting is dominated by crop planting and potato planting,animal husbandry mainly produces dairy and beef;the ethnic regions in northwest Sichuan Province is endowed with the advantages to grow crops,beans and fruits as well as to produce beef,mutton and milk,among which,three industries,say fruit,beef and dairy are with increasing location quotient and gradually strengthening industrial comparative advantage,while the location quotient of the other industries is declining and their industrial comparative advantages are more stable.In order to promote the agriculture in northwest Sichuan Province to develop in breadth and depth,the thesis proposes the following measures and suggestions:the first one is to adhere to the development strategy of modern animal husbandry;the second is to appropriately improve the proportion of economic crops;the third is to accelerate the development of green food processing industry.

Stone Towers of Barkam County in Sichuan Province of China

Barkam County,where the Aba Tibetan & Qiang Autonomous Pre-fecture government lies,is located on the intersection of South eastern of Qinghai-Tibet Plateau,Northwestern of Sichuan Basin and central Aba.Occupying 6,633 square kilometer,Barkam County boasts a time-honored history dating back to the Neolithic Age.Relics in Haxiu and Konglong reveal Barkam County to be an ethnic group settlement.All 15 ethnic groups,including Qiang,Hui,Han,among others,live in har-mony in Barkam now.Barkam has a population o...

Sources of the Laoxiongdong carbonate-hosted Pb–Zn deposit in Southwest China:constraints from S–Pb–Zn isotopic compositions

The Sichuan-Yunnan-Guizhou(SYG)Pb-Zn mineral province,which has significant Pb-Zn repositories in China,is situated in the western Yangtze Block.Despite decades of research,the Pb-Zn source of deposits is still disputed between the basement rocks,sedimentary wall rocks,or the Emeishan flood basalts.The newly-discovered Laoxiongdong Pb-Zn deposit is hosted by the Late Ediacaran Dengying Formation in the SYG province.Moreover,the Laoxiongdong orebodies lie between regional deep faults and close to the Proterozoic basement and Emeishan basalts.Hence,this deposit represents a good case study on the ore-forming material source for the regional Pb-Zn mineralization.The Laoxiongdong Pb-Zn ores are massive,vein,or disseminated and have mainly sphalerite,galena,pyrite,quartz,and calcite.In this paper,we present new sulfide S-Pb-Zn isotope data of the deposit.The sulfideδ34SCDT values(+11.8 to+16.5‰)suggest that the reduced sulfur was mainly sourced from evaporites in the Late Ediacaran-Cambrian sequences.Pb isotopic ratios(206Pb/204Pb=18.004-18.107,207Pb/204Pb=15.652-15.667,and 208Pb/204Pb=38.037-38.248)suggest that the lead metal was primarily originated from the basement rocks.The sphaleriteδ66Zn values(+0.16 to+0.37‰)are also highly similar(within error)to those of basement rocks(+0.10 to+0.34‰),suggesting a basement-rocks zinc source with minor contributions from the carbonate host rocks and Emeishan flood basalts.The narrow sphalerite Zn isotopic range(0.21‰)also indicates that the Zn isotopic fractionation between the sphalerite and initial fluid was limited during the sphalerite ore precipitation.Therefore,we propose that both the Late Ediacaran Dengying Formation rocks and Proterozoic basement rocks were important ore-forming material source for the Laoxiongdong deposit,whereas the Emeishan flood basalts represent only a minor ore-material source.

Landscape pattern change in the upper valley of Min River

The upper valley of Min River (102° 59′ –104° 14′ E, 31° 26′ – 33° 16′ N), which is consisted of the counties Wenchuan, Maoxian, Lixian, Heishui, and Songpan, refers to the part up to Dujiangyan City, and locates on the transition zone from the Tibetan Plateau to the Si- chuan Basin. It is one of the most important forest areas in China, especially in Sichuan Province. Over past two decades, the landscape changed remarkably in the region. The 3S techniques (Remote Sensing (RS), Geographic Information System (GIS) and Global Position System (GPS)) were used to classify the images and analyze the landscape change. The remotely sensed data of Landsat TM 1986 and Landsat ETM+ 2000 were used to analyze the landscape change of the region. The landscape were classified into 10 types of cropland, for- est, shrub land, economic forest, grassland, build up land, river, lake, swamp, and unused land. The results showed that: 1) the woodland and grassland were dominating landscape types in the upper valley of Min River, which is more than 91% of the study area; 2) the alteration of the landscape was mainly happened among forest, shrub land, grassland, economic forest, cropland, and build up land, where forest de- creased from 51.17% to 47.56%; 3) the landscape fragmentation in the upper valley of Min River was aggravated from 1986 to 2000.

民国时期四川体育期刊研究

民国时期,四川先后至少发行过9种体育期刊,这些期刊是探究民国初期和抗战时期,四川、西南地区,乃至全国体育发展状况的重要文献来源。文章依托原始文献,运用内容分析法,对民国时期四川发行的体育期刊进行综合考察。研究发现,四川发行的体育期刊有其独特的特点:(1)体育期刊出现的时间相对较早,时间跨度较大;(2)体育期刊种类相对较多,但期数较少;(3)作者群中体育精英云集;(4)突出体育救国,重视战时体育和国防体育。在期刊对体育发展的影响方面,主要体现在五个方面:(1)注重学术研究,促进了体育理论探索的深入和体育知识、常识的普及;(2)重视体育教育,推动了学校体育的进步;(3)关注体育动态,促进了体育信息的交流和传播;(4)重视体育历史,促进了体育史研究的发展;(5)注重经验总结,促进了政府和民众对体育重要性的认识。

清末民初江苏地区家谱特点探析

清末民初,在动荡的社会环境下,家谱修撰成为部分家族承继血缘关系和家族文化的重要方式。江苏地区是修纂家谱最为密集的地区之一,对家谱的诸多方面进行了有益的补充。扬州吴氏、宜兴吕氏和无锡锡山秦氏三个家族的家谱具有完备的体例,重视家规族约的制定,并充实了对家族女子成员的记载内容。这些特点与当时的政治环境、经济基础和区域文化紧密相关,是传统文化和近代思想相结合的产物。

论民国时期制革业的发展及其特征——以湖南为中心的考察

虽然湖南乃至全国的制革起源较早,但近代中国新式制革的铬鞣法则始于1898年的天津,而湖南则迟至民国初年。其中,在20世纪初实业救国和国货运动的推动下,湖南制革业得以初步发展。特别是在20世纪20年代,即使在政局动荡的影响下,部分制革厂暂时停产或倒闭,但总体上湖南制革业不仅出现了股份制经营管理,而且还呈现出机器与手工作坊并存的发展趋势。抗战爆发后,特别是南京、上海等制革业重要的城市沦陷后,随着人口和工厂的内迁,在战时经济建设的推动下,湖南制革业与其他纺织业一样呈现出畸形繁荣发展。同时,从整个民国时期中国制革业发展历程来看,湖南制革业在阶段性发展中均存在着原料不足、技术较差、原料依赖性较强等诸多特征。

民国时期(1935-1938)福建茶业科研的起步研究

现代科研活动本质上是一种社会活动,科技的发展离不开特定的社会历史条件。本文聚焦民国时期福建茶业科研的蹒跚起步,剖析福建茶业科技事业诞生的历史背景,细究福建茶业科技事业的最初建树,品味当时的艰辛与遗憾,从而为认识茶科技与茶产业的密切关系,提升茶科技贡献度等找到源头的启示。

民国时期日本制印陕西省地形图的信息来源研究

民国时期,日本制印的陕西省地形图现存9套,共计458幅。其中,3套翻印图和2套编绘图主要基于民国政府制陕西省的《十万分一图》和《五万分一图》复制或改绘而成。这些图包含了中、日两种形式的纪年。每幅《民国图缩制(陕西省十万分一图)》由2—4幅民国政府制《五万分一图》等比例缩制。与现存民国政府制及日本翻印的十万分之一地形图相比,这套图地形要素更丰富、精准。其余4套测绘图仅标注日本纪年,其地形要素源于日军航摄。厘清日制陕西省地形图的信息来源,可作为近代军事地形图的文献来源及资料特征的案例参考。

从医籍出版到期刊编印——民国时期浙江中医药出版物的跨境互动与海外影响

[目的]以出版物为视角探讨民国时期浙江中医药海外传播的样貌,揭示中医药海外传播的浙江贡献。[方法]运用文献研究、历史研究方法,梳理民国时期浙江中医药著作和期刊的出版特征与代表性成果,分析这一时期浙江中医药学术出版物境外传播的状况。[结果]民国时期浙江医家通过编撰中医学教材、出版中西汇通著作、编纂中医大型丛书、互译中医药代表性著作等形式提振中医药海外影响,通过推动浙江中医药期刊的境外发售、境外广告刊登、海外存藏等途径加强中医药海外传播。[结论]民国时期浙江中医药出版物对中医药的对外传播具有不可忽视的作用,不仅促进了中医药知识的跨境传播,并且进一步增强了世界对中医学科学价值的肯定,对构建新时代浙江特色的中医药对外传播话语体系具有启迪意义。

甘肃省土地沙漠化的治理与启示

新中国成立以来,甘肃省的土地沙漠化一度加重,新世纪后才逐步逆转。为建设经济和治理生态环境,甘肃省实施了生物治沙、机械治沙、化学治沙、政策法规治沙、农业治沙、工程治沙及资金治沙等一系列措施,基本遏制了土地沙漠化发展、实现了“山水林田湖草沙”的动态平衡、初步构建了国家西部生态安全屏障、治沙工作走到世界前列,达到了“绿进沙退”的治理目标。但同时,甘肃省的土地沙漠化治理中仍存在与经济社会发展的矛盾、治理投入不足,市场融资困难、对自然规律把握不准、缺乏前瞻性和创新性等不足。为进一步推动和完善治沙工作,必须加大沙产业投入;树立“人与自然和谐共生”观念;架构科学治沙体系;加强理论研究、平台与人才队伍建设;完善治沙制度。