运用语文知识 设置问题悬念

在讲中国地理中“秦岭-淮河-线是我国最重要的地理界线”时，我先引用了语文课《晏子使楚》中的“橘生淮南则为橘，生于淮北则为枳，水土异也”。这句话，问学生为什么生长在淮河以南的橘子，甘甜可口，营养丰富，而生长在淮河以北的橘子变成了枳子，人们吃了感到酸苦难咽，刺激肠胃呢?     

本地知识基础对新兴产业知识流动的影响——以中国燃料电池产业为例

经济地理学者对于新兴产业的产生区位长期存在争论,在中美贸易战背景下,探究其区位规律既是重要的学科问题,又对国家培育新兴产业具有重要指导意义.通过梳理“区域产业分叉”和“区位机会窗口”的观点,辨析出知识流动是影响新兴产业区位的关键点;以燃料电池产业为例,结合“相关多样化”假说的观点,采用面板空间自回归模型对知识基础的具体...     

项国土资源部“金土工程”正式立

由国土资源部向国家申报的“金土工程”一期建设项目建议书，于5月31日得到国家发改委正式批准。“金土工程”成为2002年确定的国家“十二金”电子政务重点工程之外第一个正式批准立项的电子政务工程项目。按照国家发改委对项目建议书的批复，“金土工程”一期建设包括：制定相关国土资源信息化标准；在国土资源部、31个省（市、区)和32个城市，建立相关土地基础数据库和耕地保护业务管理应用系统：建立重要矿产的矿产资源基础数据库和管理应用系统；     

2006地理信息系统银奖工程简介湖南省林业基础地理数据管理系统

1项目简介 1.1背景 在"数字地球"的大背景下,我国林业系统于2003年提出构建国家"数字林业"系统的构想.     

寒风瑟瑟话进补

气候寒冷,人体对能量与营养要求较高,且人体消化吸收功能相对较强,适当进补不但能提高机体抗病能力,还可把滋补品中有效成分储存在体内,为明年开春乃至全年的健康打下基础。冬令进补,主要指立冬后至立春前期间,习惯认为冬至前后最为适宜。     

2008年世界铜资源供需形势分析

1资源状况尽管世界每年铜金属产量规模均超一千万吨,但是随着新一轮矿业经济周期中全球铜矿勘查投资的不断增加,世界不断有新的铜资源被发现,使得世界铜资源储量及基础储量总体呈增长态势,供应保障能力持续向好。据美国地质调查局资料,近10年来,世界铜资源储量及基础储量均约增长了50%,静态供应保障能力进一步提升至35年(图1)。     

局属动态

省有色地勘局贯彻落实省委省政府领导地勘工作重要批示5月24日,省有色地勘局召开党委扩大专题会议,学习骆惠宁书记、郝鹏省长在省国土资源厅《关于2012年地质勘查主要成果情况的报告》上的重要批示,提出了贯彻落实意见:一是加强基础工作和科研工作,充分     

1208-1369年陕甘宁交界地区干湿变化

More than 240 items of historical records containing climatic information were retrieved from official historical books, local chronicles, annals and regional meteorological disaster yearbooks. By using moisture index and flood/drought (F/D) index obtained from the above information, the historical climate change, namely wet-dry conditions in borderland of Shaanxi Province, Gansu Province and Ningxia Hui Autonomous Region (BSGN, mainly included Ningxialu, Hezhoulu, Gongchanglu, Fengyuanlu and Yan’anlu in the Yuan Dynasty) was studied. The results showed that the climate of the region was generally dry and the ratio between drought and flood disasters was 85/38 during the period of 1208–1369. According to the frequencies of drought-flood disasters, the whole period could be divided into three phases. (1) 1208–1240: drought dominated the phase with occasional flood disasters. (2) 1240–1320: long-time drought disasters and extreme drought events happened frequently. (3) 1320–1369: drought disasters were less severe when flood and drought disasters happened alternately. Besides, the reconstructed wet-dry change curve revealed obvious transition and periodicity in the Mongol-Yuan Period. The transitions occurred in 1230 and 1325. The wet-dry change revealed 10- and 23-year quasi-periods which were consistent with solar cycles, indicating that solar activity had affected the wet-dry conditions of the study region in the Mongol-Yuan Period. The reconstructed results were consistent with two other study results reconstructed from natural evidences, and were similar to another study results from historical documents. All the above results showed that the climate in BSGN was characterized by long-time dry condition with frequent severe drought disasters during 1258 to 1308. Thus, these aspects of climatic changes might have profound impacts on local vegetation and socio-economic system.     

二维地理实体质量特性分析

随着新型基础测绘工作逐步开展实施和试点建设完成,各地根据自身特点和优势开展了一系列的技术研究和方法探索。地理实体作为新型基础测绘体系中重要的产品成果,如何构建高质量、标准化、符合要求的产品还存在一定的技术探索空间,本文就根据现有两种路径生产二维地理实体过程中关键环节和步骤及实体组成要素分析,总结归纳成果质量特性及质量检查要点,以期为后续地理实体质量控制及质量评价提供有益借鉴和技术参考。