深切怀念吴传钧先生     

刘彦随  樊杰  何书金 《地理学报》2009,64(4)

吴传钧先生1918年4月生.1941年毕业于中央大学地理系,1943年获该校硕士学位.1948年获得利物浦大学博士学位.历任中央大学和英国利物浦大学讲师,中国科学院地理研究所研究员、副所长.  相似文献   

中国对外贸易产生的CO_2排放区位转移分析   总被引：19，自引：0，他引：19  

张晓平 《地理学报》2009,64(2)

减缓以CO2为主的温室气体排放所引起的全球气候变化问题越来越为国际社会所瞩目.目前有关的国际协定主要以国家本土温室气体排放为基准核算国家的碳排放责任和减排成效,忽略了国际商品贸易流引起的排放区位与产品消费区位的空间分离.本文利用2000～2006年中国海关货物进出口商品分类数据,采用投入产出法,分析了中国货物进出口贸易产生的CO2排放区位向中国的转移效应.结果表明,中国出口商品内涵的CO2排放量从2000年的9.6亿t增加到2006年的19.1亿t,每年占全国总排放的比重基本在30%-35%.扣除进口商品使我国避免在本土排放的CO2,货物进出口贸易使净转移到我国的CO2排放量至少从2.3亿t增加到7.2亿t,中美贸易顺差、中国与欧盟贸易顺差是产生净转移的主要原因.结论主张相关国际协定从排放区位与消费区位相结合的角度制定温室气体减排政策.  相似文献   

Liquefaction macrophenomena in the great Wenchuan earthquake   总被引：3，自引：2，他引：1  

Longwei Chen  Xiaoming Yuan  Zhenzhong Cao  Longqing Hou  Rui Sun  Lin Dong  Weiming Wang  Fanchao Meng  Hongjuan Chen 《地震工程与工程振动(英文版)》2009,8(2):219-229

On May 12, 2008 at 14:28, a catastrophic magnitude M 8.0 earthquake struck the Sichuan Province of China.The epicenter was located at Wenchuan (31.00°N, 103.40°E). Liquefaction macrophenomena and corresponding destruction was observed throughout a vast area of 500 km long and 200 km wide following the earthquake. This paper illustrates the geographic distribution of the liquefaction and the relationship between liquefaction behavior and seismic intensity, and summarizes the liquefaction macrophenomena, including sandboils and waterspouts, ground subsidence, ground fissures etc., and relevant liquefaction features. A brief summary of the structural damage caused by liquefaction is presented and discussed. Based on comparisons with liquefaction phenomena observed in the 1976 Tangshan and 1975 Haicheng earthquakes, preliminary analyses were performed, which revealed some new features of liquefaction behavior and associated issues arising from this event. The site investigation indicated that the spatial non-uniformity of liquefaction distribution was obvious and most of the liquefied sites were located in regions of seismic intensity Ⅷ. However, liquefaction phenomena at ten different sites in regions of seismic intensity Ⅵ were also observed for the first time in China mainland. Sandboils and waterspouts ranged from centimeters to tens of meters, with most between 1 m to 3 m. Dramatically high water/sand ejections,e.g., more than 10 m, were observed at four different sites. The sand ejections included silty sand, fine sand, medium sand,course sand and gravel, but the ejected sand amount was less than that in the 1976 Tangshan earthquake. Possible liquefaction of natural gravel soils was observed for the first time in China mainland.  相似文献   

崩落矿岩散粒体流动性能试验研究   总被引：3，自引：0，他引：3  

陶干强  杨仕教  任凤玉 《岩土力学》2009,30(10):2950-2954

崩落矿岩散粒体的流动性能对于降低损失贫化具有重要的意义。分析了影响散粒体流动性能的因素,采用标志颗粒法进行了崩落矿岩散粒体流动性能试验,主要考虑的因素有放矿口大小、散体颗粒的粒径以及不同的散体材料。试验内容有放矿口大小与散体移动带试验;不同散体粒径与散体移动带试验、不同散体材料与散体移动带试验;平面和立体模型时放矿口尺寸对放出量影响试验;散体堆积高度与散体移动带试验。研究结果表明,（1）移动边界与散体的材料、颗粒的尺寸大小、放矿口大小等因素有关,而散体堆积高度对其影响不大;（2）散体的流动速度与散体颗粒的大小和放矿口尺寸有关。根据所得试验结果,提出了采矿设计参数的确定方法。  相似文献   

喀左盆地下白垩统九佛堂组油页岩特征及控矿条件   总被引：2，自引：0，他引：2  

王宇林  郭强  肖乾华  王威  杨春  魏恒飞  刘锦 《吉林大学学报(地球科学版)》2009,39(2):211

野外地质调查和岩石学、地球化学研究表明：喀左盆地3个油页岩层群分别发育于下白垩统九佛堂组的一、二、三段,以位于三段的第三油页岩层群的工业意义最大;油页岩常与上覆沉凝灰岩或其它凝灰质岩石呈伴生关系。油页岩（矿石）类型有泥岩、具粉砂质条带的含钙-钙质泥岩、泥灰岩和页岩4种类型,以前两者为主;低品级油页岩体积分数为50％,中品级油页岩体积分数为42％,高品级油页岩体积分数为8％,均属高灰分油页岩。油页岩的有机质类型为腐植-腐泥型,源于低等植物;浅湖-半深湖形成的油页岩（矿石）类型为含粉砂质条带的含钙-钙质泥岩,深湖形成的油页岩（矿石）类型主要为泥岩;物源区母岩类型对油页岩的化学成分特征及灰分成分类型具有明显的控制关系;火山喷发的灾变事件终止了油页岩的成矿作用。  相似文献   

CSAMT法和TEM法在铜陵龙虎山地区隐伏矿勘探中的应用   总被引：3，自引：0，他引：3  

王大勇  李桐林  高远  方含珍  赵广茂 《吉林大学学报(地球科学版)》2009,39(6):1134-1140

CSAMT法是深部隐伏矿勘探工作的重要手段之一。将CSAMT法用于铜陵龙虎山地区隐伏矿勘察,在深入认识研究区的成矿规律和控矿因素的基础上,对该区的CSAMT数据进行了预处理和反演,对比TEM法反演结果,电性特征的统一性验证了CSAMT法反演结果的可靠性。联合CSAMT和TEM反演结果成功地分辨出侵入岩体和岩浆热液的运移通道,为该区寻找隐伏矿提供了有效的勘探手段。  相似文献   

中国长城博物馆     

起建军  ;郑严供图 《地球》2009,(6):21-21

1994年．中国长城博物馆,也是唯一的“国”字头的长城博物馆矗立在八达岭长城脚下。当时．无论是展览的内容．抑或表现方式。从今天的视角观察．未免失于浅薄和简陋。2008年．北京奥运为中国长城博物馆的升级提供了千载难逢的契机。经过一年时间的遍及长城内外的文物搜集．经过精心打造,2008年5月18日——“国际博物馆目”．  相似文献   

长城的象征意义与认识演化     

孙志升 《地球》2009,(6):22-29

南朝宋时大将檀道济,曾随高祖北伐,在争取统一的大业中屡立战功,威名甚重,朝廷疑畏之,诏廷尉加害了他及其诸子。檀道济被抓时,脱下头巾丢地说：“乃复坏汝万里之长城。”可见万里长城作为国家统一和安全屏障的象征意义早已植根于中国人的心目之中。  相似文献   

致谢审者     

《中国地震》2009,25(1)

2008年,《中国地震》在近百位专家的大力支持下圆满地完成了出版任务。为了保证刊物的质量,他们花费了很多宝贵的时间和精力为本刊审稿。他们严谨治学、实事求是的科学精神令人敬佩。在此,我们谨向下列各位专家（以姓氏笔画为序）表示衷心的感谢。  相似文献   

Effects of precipitation and landuse on runoff during the past 50 years in a typical watershed in the Loess Plateau, China   总被引：2，自引：0，他引：2  

Huaxing BI  Bin LIU  Jie WU  Lei YUN  Zhihan CHEN  Zhewei CUI Prof. in hydrology  College of soil  water conservation  Box  Beijing Forestry University  Qinghua East Road  Haidian District  Beijing  China  Researcher in hydrology  Xifeng station of soil  water conservation  Xifeng  Gansu Province  China Graduate Assis. 《国际泥沙研究》2009,24(3):352-364

In the past century, great progress has been made worldwide in our understanding of forest-water relationship. The successful forestation programs implemented in China-which have improved the ecological environmental conditions-have gained the attention of many researchers and highlighted the relationship between forestation and water yields. The arid and semi-arid Loess Plateau has received attention from water engineers and eco-hydrological researchers in China because of a shortage in water resources. We selected one of the oldest stations conducting soil and water conservation experiments, the Xifeng soil and water conservation station, and chose the Nanxiaohe catchment and its paired catchments （Yangjiagou catchment and Dongzhuanggou catchment） as our research areas. Trends in precipitation, air temperature, streamflow over the past 50 years, and the effect of changing land use on streamflow were analyzed. The Mann-Kendall test showed that precipitation had a negative trend （downward trend）, whereas air temperature showed a positive trend （upward trend） from the past to present in the Nanxiaohe catchment. However, the trends seen in precipitation, air temperature did not contain any ＂jumping points.＂ The paired catchment approach is used to detect the effects of land cover change on hydrology in the Yangjiagou and the contrast catchment, i.e., Dongzhuanggou catchment in our study. The results showed a large change in land use in the Yangjiagou catchment from 1954 to 2008. An increase in forested land （from 0% to 40.08% from 1954 to 2008） and a reduction of bare land （from 51.26% to 5.50% from 1954 to 2008） accounted for a large part of the change in land use. However, the land use changed little in the contrast catchment. The comparison of streamfiow in the paired catchments showed that forestation reduced streamflow by 49.63% （or 6.5 mm） each year.  相似文献