重庆图书馆馆藏西南大区时期文艺类文献研究——以馆藏文学艺术类图书为中心

中华人民共和国成立以来,由于工农群众在政治上翻了身,物质生活得到改善,他们对文化艺术的需求也日益迫切。重庆图书馆馆藏西南大区时期(1949—1954年)文学艺术类图书正是在这个大背景下创造产生的。为了充分挖掘馆藏,摸清反映西南大区存续期间文艺发展状况的图书存藏情况,更好地揭示和推介文献内容,文章以馆藏西南大区时期文学艺术类图书为研究对象,经过系统梳理与总结发现这一时期的图书过百种,散存于民国文献书库、基藏书库及地方文献书库。文献分为党的文艺政策理论及工作方针、西南人民迎来新生、军旅题材、生产建设题材、少数民族题材以及西南传统文艺的传承与发展等六类,对内容进行详细介绍以及为重点文献撰写提要,着力反映西南大区时期的文艺创作、发展情况,为相关学者研究提供史料依据和参考。

基于类型学理论的西南大区传统风貌区保护与利用研究——以大田湾文化宫西南大区传统风貌区保护为例

西南大区时期建筑在重庆建筑发展史上占有重要地位。本文以类型学为理论工具，通过对历史资料和重庆现存西南大区建筑的研究，探讨总结了西南大区建筑在类型元素、类型发展、类型演变等方面的相关类型控制要素。利用类推设计的方式通过整体空间结构梳理、建筑风貌调整、建筑细部提炼三个层次，对西南大区风貌传统风貌保护与利用进行实践探索。

西南大区时期重庆市院主要建筑作品回顾

西南大区时期是重庆市建筑创作的第一个高峰。该文回顾大区时期重庆市属惟一一家以民用建筑为主兼具市政、勘测设计等专业资质的综合设计机构——市设计院的主要建筑作品,对这些代表作品的建筑风格文化趋向与成因进行解读,揭示主政大西南的三位开国元勋对建筑“人民至上”的政治判断与历史经验。

浅析奇瑞西南销售大区营销新模式

我国汽车行业发展趋于放缓,汽车市场竞争愈加激烈,汽车厂商不断推陈出新,积极探索适合自己的营销模式。本文通过对奇瑞西南大区汽车营销新模式的内涵分析,结合西南地区的汽车市场环境,获得对以奇瑞汽车市场发展前景的有效建议,总结出适合奇瑞汽车的市场营销模式。

更新为经,振兴为纬——重庆市设计院的新时代答卷

有些集体是带着使命诞生的。而这样的使命,在伴随其成长的过程里,不断与重大需求联动呼应,在与城乡共发展、与时代同频振的长跑征程中,凝结成这个集体的气质、情怀和力量。从重庆市设计院有限公司(以下简称重庆市设计院)珍藏的重庆城建图档,到西南大区时期完成的文化、体育、办公、教育等大批优秀现代建筑遗产,再伴随重庆作为全国首个经济体制综合改革试点城市被赋予重大历史使命。

广西 华润田阳水泥年产500万吨骨料项目顺利竣工投产

12月9日,田阳水泥年产500万吨骨料项目竣工投产仪式在广西百色市田阳区顺利举行。田阳区委书记黄国哲,田阳区人大常委会主任李宁,中材节能副总工程师姚元君,华润水泥西南大区总经理彭方清,西南大区副总经理王云、朱晓峰、杨彦博等领导参加仪式。仪式由田阳区委副书记黄光源主持,黄国哲书记宣布项目正式竣工投产。

订奶粉,送金条,砸金蛋!澳华引领200位养殖大户、经销商向“钱”冲

"澳华,正异军突起!"2020年1月10日,由澳华集团主办的"湛江澳华2020年高效养殖技术论坛"在湛江海洋国际酒店召开,广东海洋大学水产学院教授杜国平、澳华集团西南大区总经理林书良、常务副总经理李德广、集团研发中心所长杨阳等嘉宾与领导,以及来自湛江对虾养殖核心区域的近200位养殖大户、经销商代表汇聚一堂。会议前夕,本刊记者特邀采访了澳华集团西南大区总经理林书良,就现阶段澳华在西南大区的发展情况以及今后的市场规划进行了详细阐述。

North Atlantic forcing of autumn drought in Southwest China

Drought often lasts long and is thus closely related to slowly varying external forcing such as sea surface temperature(SST).Here,based on observed precipitation and SST data along with NCEP-DOE reanalysis data,the possible impacts of North Atlantic SST on drought formation in Southwest China are investigated.Results show that northeast-southwest-orientated dipole SST anomalies in the mid-high latitudes of the North Atlantic are closely related to autumn drought in Southwest China;the linear correlation coefficient between them reaches 0.48 during 1979-2020,significant at the 0.001 level.The dipole SST anomalies trigger southeastward-propagating Rossby waves and induce barotropic cyclonic circulation anomalies over India and the western Tibetan Plateau.This enhances the upward motion in northern India and the western Tibetan Plateau and causes a compensating downdraft,reduced precipitation,and consequent drought formation in Southwest China.

Strengthened influence of the East Asian trough on spring extreme precipitation variability over eastern Southwest China after the late 1980s

The relationship between variations in the East Asian trough(EAT)intensity and spring extreme precipitation over Southwest China(SWC)during 1961-2020 is investigated.The results indicate that there is an interdecadal increase in the relationship between the EAT and spring extreme precipitation over eastern SWC around the late1980 s.During the latter period,the weak(strong)EAT corresponds to a strong and large-scale anomalous anticyclone(cyclone)over the East Asia-Northwest Pacific region.The EAT-related anomalous southerlies(northerlies)dominate eastern SWC,leading to significant upward(downward)motion and moisture convergence(divergence)over the region,providing favorable(unfavorable)dynamic and moisture conditions for extreme precipitation over eastern SWC.In contrast,during the former period,the EAT-related circulation anomalies are weak and cover a relatively smaller region,which cannot significantly affect the moisture and dynamic conditions over eastern SWC;therefore,the response in extreme precipitation over eastern SWC to EAT is weak over the period.The interdecadal change in the relationship between eastern SWC spring extreme precipitation and the EAT could be related to the interdecadal change in the EAT variability.The large(small)variability of the EAT is associated with significant(insignificant)changes in spring extreme precipitation over eastern SWC during the latter(former)period.

Permeability and Sedimentation Characteristics of Pleistocene Fluvio-glacial Deposits in the Dadu River Valley,Southwest China

There exist many fluvio-glacial deposits in the valley of Dadu River, Southwest China, which dates back to the Pleistocene. As some of the deposits are located within the seasonal water fluctuation zone of reservoirs, the seepage of groundwater acts as one of the key factors influencing their stability. Investigation into the sediment properties and permeability is, therefore, crucial for evaluating the sediment stability. In this study, in-situ permeability and sieving tests have been carried out to determine grain size distribution, correlations of permeability and hydraulic gradients, and relations between permeability and sedimentation properties. Test results indicate that the deposits are composed mostly of sands, gravels, cobbles and boulders, and the percentage of fines is less than 5%. The sediments have high densities, low porosities and natural moisture contents. At low hydraulic gradients, the seepage velocity obeys the Darcy＇s law, while a non- Darcy permeability is observed with hydraulic gradient exceeding a certain value （about 0.5 - 0.7）. The linear permeability coefficient ranges from 0.003 to 0.009 cm/s. Seepage failure occurs above a threshold between 1.1 and 1.5. The test data fit well with the non-linear permeability equations suggested by Forchheimer and Izbash. The non-Darcy permeability proves to be in accordance with the seepage equation suggested by Izbash with the power ＇m＇ of about 0.6 - 0.7. The characteristic grain sizes of the studied deposits are found in a narrow range between 0.024 and o.o31 mm, which is much lowerthan the effective grain size （dlo）.

Perception and Attitudes of Local Communities Towards Wild Elephant-related Problems and Conservation in Xishuangbanna,Southwestern China

The problem of wild elephants, or human-elephant conflict (HEC), influences the daily life of local communities and hinders the conservation of wild elephants.The perception and attitudes of local communities who inhabited the frontiers between human activities and wild elephant movement are important to the mitigation of the HEC and conservation of wild elephants. To analyze the perception and attitudes of local communities, the Participatory Rural Appraisal (PRA) was used in the investigation of 423 interviewees from 22 villages in Xishuangbanna from July 2009 to February 2010. The results indicated that local communities had their views on the elephant-related problems. In field survey, we found that 66.5% of interviewees were willing to support, participate in, and assist in the conservation of wild elephants;33.5% of interviewees were opposed or indifferent to such conservation, because their livelihoods and even their lives were endangered by wild elephants. These views and attitudes were influenced by local communities′perception of HEC, education level, gender and self-interest. Therefore, it is necessary to analyze the diverse views among local communities and balance profits and costs in addressing HEC.

The Freezing Precipitation over the Middle-Lower Reaches of the Yangtze River during February-March 2009

In this paper, the authors analyze the quasistationary fronts, surface conditions, and atmospheric stratification processes associated with a freezing precipitation event over the middle-lower reaches of the Yangtze River, especially in the Dabie mountain during February-March 2009. The long duration of freezing precipitation was primarily caused by stationary and anomalous synoptic weather patterns, such as a blocking high pressure in the northern branch and a trough in the southern branch of the westerlies, which resulted in the encounter cold air from northern China and warm moisture from the south. The east-west-oriented, quasi-stationary front （or shear line） found in central China was mostly responsible for producing the precipitation. The warm layer and nearsurface frozen layer were located in the lower troposphere along the front zone. Although the warm layer （〉 0℃） existed along the whole front, a surface temperature less than 0℃ appeared only over the lower-middle reaches of the Yangtze River, especially in the Dabie mountain. Therefore, the surface temperature was the main influencing factor, as the freezing precipitation only happened over the Dabie mountain.

Inter-decadal variations of springtime rainfall over southern China mainland for 1979-2004 and its relationship with Eurasian snow

This study analyzes the inter-decadal variations of rainfall over southern China in spring (March-April-May) using the observed precipitation data for 1979-2004. The result shows that the variations of spring rainfall over southeastern China are opposite to those over and southwestern China in both inter-annual and inter-decadal time scales. The precipitation over south- ern China exhibits an apparent inter-decadal shift in the late 1980s. The accumulated spring rainfall has reduced 30% over southeastern China after the late 1980s, whereas it has increased twice as much over southwestern China. The atmospheric circulations related to this shift show that an abnormal high at lower and middle troposphere appears over Asian middle and high latitudes, accompanied by stronger-than-normal northerly wind over eastern China. Consequently, the wet air flows from tropical oceans are weakened over southern China, resulting in less rainfall over southeastern China and more rainfall over southwestern China. Furthermore, the anomalous atmospheric circulation over Asian middle and high latitudes is closely related to the inter-decadal downward shift of Eurasian spring snow in the late 1980s, indicating that the inter-decadal shift of Eurasian spring snow in the late 1980s is probably an important factor in the decadal shift of spring rainfall over southern China.

Estimating the geographic range of a threatened shark in a data-poor region： Cetorhinus maximus in the South Atlantic Ocean

The distribution of the planktivorous basking shark Cetorhinus maximus is influenced by zooplankton abundance at small scales and temperature at medium scales in the North Atlantic. Here, we estimate the distribution of basking sharks on South Atlantic continental shelves, and the relative importance of chlorophyll concentration, as a proxy for zooplankton abun- dance, and temperature in determining habitat suitability for basking sharks at large scales. We used maximum entropy （MaxEnt） and maximum likelihood （MaxLike） species distribution modelling to test three hypotheses： the distribution of basking sharks is determined by （1） temperature, （2） chlorophyll concentration, or （3） both chlorophyll and temperature, while considering other factors, such as oxygen and salinity. Off South America, basking shark habitat included subtropical, temperate and cool-temperate waters between approximately 20°S and 55°S. Off Africa, basking shark habitat was limited to cool-temperate waters off Namibia and southern South Africa. MaxLike models bad a better fit than MaxEnt models. The best model included minimum chlorophyll concentration, dissolved oxygen concentration, and sea surface temperature range, supporting hypothesis 3. However, of all variables included in the best model, minimum chlorophyll concentration had the highest influence on basking shark distribution. Unlike the North Atlantic distribution, the South Atlantic distribution of basking sharks includes subtropical and cool-temperate waters. This difference is explained by high minimum chlorophyll concentration off southern Brazil as compared to North Atlantic subtropical areas. Observations in other regions of the world support this conclusion. The highest habitat suitability for basking sharks is located close to nearshore areas that experience high anthropogenic impact [Current Zoology 61 （5）： 811-826, 2015].