包头市工业资源的生态开发利用与持续发展   总被引：1，自引：0，他引：1  

薛东前 《干旱区地理》1997,20(1):53-56

本文从生态经济和持续发展的观点出发，论述了包头市工业资源的优势与劣势，指出发展的根本出路在于对工业资源的生态开发和持续发展，对工业资源的生态开发和无围绕太 导产业群本进行，文章分别指出农产品加工业，能源工业，材料工业和机械工业的资源生态开发和问题，并提出其共同的指导性措施。  相似文献   

江汉平原农田渍害机理研究^*   总被引：4，自引：0，他引：4  

喻光明 《地理研究》1993,12(3):37-44

本文提出了江汉平原的渍害标准,并从地表水动态,地下水动态、微地貌及垦殖与耕作等主导因子分析入手,探讨了江汉平原渍害的形成原因和形成过程,为渍害的诊断改造和利用提供了理论依据。  相似文献   

河南省主体功能区划分的主导因素研究   总被引：5，自引：6，他引：5  

张莉  冯德显 《地域研究与开发》2007,26(2):30-34

推进形成主体功能区是我国"十一五"及今后一段时期一项重要而又紧迫的任务,是我国经济社会发展的一个重要战略调整和转变.作者在全面分析河南省独特的自然条件和经济社会发展特征的基础上,认为:自然条件的过渡性是影响河南省主体功能区划分的本底因素;土地、水等重要资源严重不足并且开发利用强度高成为主体功能区划分的刚性限制因素;生态环境较高的敏感性和脆弱性是主体功能区划分尤其是对禁止开发区和限制开发区的划定作用显著;工业化和城镇化的快速发展带来的全省经济的高增长势头和未来区域经济发展的格局是主体功能区划分需要把握的重要经济属性.  相似文献   

长江口深水航道治理工程综述   总被引：3，自引：0，他引：3  

冯铭璋  沈日庚 《上海国土资源》2001,(3):10-15

文章概要地介绍长江口深水航道治理工程的规划、勘察、设计和施工情况，对整治方案及主要岩土工程问题略作讨论。  相似文献   

回忆父亲点滴          下载免费PDF全文

陈家莹 《第四纪研究》2000,(1):18-23

父亲是世纪同龄人 ,从 50岁到 80岁是他生命的春天。他以常人在这个年龄难以迸发的热情、智慧、不懈努力和顽强开拓的精神 ,在地质战线上为新中国建设辛勤耕耘 ,是一位在地学领域涉足宽广、具有科学预见能力、富有领导组织才能的科学家和领导者。他总是关注未来 ,特别热心于培养年轻人 ,对建立一支高水平、有解决问题能力的地质队伍下了很大功夫。父亲沉静善思、富有哲学头脑 ,他的许多预见性学术观点和开创性思维都源于他宁静淡泊的心态。没有浮华和功利 ,这便是他智慧的源泉。  相似文献   

The Second Decadal Leading Mode of East Asian Summer Monsoon Rainfall          下载免费PDF全文

BAO Qing  YU Pei 《大气和海洋科学快报》2014,(5):417-421

The first decadal leading mode of East Asian summer rainfall （EASR） is characterized by rainfall anomalies along the East Asian subtropical rain belt. This study focuses on the second decadal leading mode （2DLM）, accounting for 17.3% of rainfall decadal vari- ance, as distinct from the other two neighboring modes of EAMR, based on the state-of-the-art in-situ rainfall data. This mode is characterized by a South-China-wet-Huaihe- River-dry pattern, and is dominated by a quasi-30-yr pe- riod. Further analysis reveals the 2DLM corresponds to an enhanced lower-level monsoon jet, an eastward extension of the western North Pacific subtropical high, and a weakened East Asian upper-level westerly jet flow. The Tibetan Plateau surface temperature and Pacific Decadal Oscillation （PDO） are closely linked with the 2DLM. The regressed SST pattern indicates the PDO-like pattern of sea surface temperature anomalies may have a telecon- nection relationship with the 2DLM of EASR.  相似文献   

矿山开发中的含水层破坏评估方法初探——以白山市恒基煤矿为例     

林琳  王屹林  谢冬月  李良顺  王鹏  李东川 《吉林地质》2014,(4)

本文以白山市恒基煤矿为例,在阐述矿区地质环境基础上,探讨了矿山开采中的含水层结构破坏评估方法,含水层水位、水量变化、和采矿活动对含水层水质造成的污染。最后提出了防治措施,为矿山地质环境恢复治理提供科学依据,也为其他矿山开采提供参考。  相似文献   

Research on regional comprehensive development in developed regions —The case of Shanghai-Nanjing-Hangzhou area     

Xinxian Lu 《中国地理科学(英文版)》1992,2(3):256-265

The developed regions are faced with the problems of regional comprehensive development, and the research on regional comprehensive development has become a trend in the world. To optimize regional industrial structure and to select and determine scientifically the spatial development strategy of regional industries are the central themes to be solved for the research on regional comprehensive development in the developed regions. This paper proposed the basis for optimizing regional industrial structure, and the main factors of selecting and determining the regional leading industries. Based on this, the paper puts forward the leading industries and the spatial development strategy in Shanghai-Nanjing-Hangzhou area in the future ten or more years. Combined with the situation of Shanghai-Nanjing-Hangzhou area, the paper also discusses some problems of locating superior developing axis to benefit the rational distribution of regional productive forces.  相似文献   

Observations and modelling of the travel time delay and leading negative phase of the 16 September 2015 Illapel,Chile tsunami     

Peitao Wang  Zhiyuan Ren  Lining Sun  Jingming Hou  Zongchen Wang  Ye Yuan  Fujiang Yu 《海洋学报(英文版)》2021,40(11):11-30

The systematic discrepancies in both tsunami arrival time and leading negative phase (LNP) were identified for the recent transoceanic tsunami on 16 September 2015 in Illapel, Chile by examining the wave characteristics from the tsunami records at 21 Deep-ocean Assessment and Reporting of Tsunami (DART) sites and 29 coastal tide gauge stations. The results revealed systematic travel time delay of as much as 22 min (approximately 1.7％ of the total travel time) relative to the simulated long waves from the 2015 Chilean tsunami. The delay discrepancy was found to increase with travel time. It was difficult to identify the LNP from the near-shore observation system due to the strong background noise, but the initial negative phase feature became more obvious as the tsunami propagated away from the source area in the deep ocean. We determined that the LNP for the Chilean tsunami had an average duration of 33 min, which was close to the dominant period of the tsunami source. Most of the amplitude ratios to the first elevation phase were approximately 40％, with the largest equivalent to the first positive phase amplitude. We performed numerical analyses by applying the corrected long wave model, which accounted for the effects of seawater density stratification due to compressibility, self-attraction and loading (SAL) of the earth, and wave dispersion compared with observed tsunami waveforms. We attempted to accurately calculate the arrival time and LNP, and to understand how much of a role the physical mechanism played in the discrepancies for the moderate transoceanic tsunami event. The mainly focus of the study is to quantitatively evaluate the contribution of each secondary physical effect to the systematic discrepancies using the corrected shallow water model. Taking all of these effects into consideration, our results demonstrated good agreement between the observed and simulated waveforms. We can conclude that the corrected shallow water model can reduce the tsunami propagation speed and reproduce the LNP, which is observed for tsunamis that have propagated over long distances frequently. The travel time delay between the observed and corrected simulated waveforms is reduced to <8 min and the amplitude discrepancy between them was also markedly diminished. The incorporated effects amounted to approximately 78％ of the travel time delay correction, with seawater density stratification, SAL, and Boussinesq dispersion contributing approximately 39％, 21％, and 18％, respectively. The simulated results showed that the elastic loading and Boussinesq dispersion not only affected travel time but also changed the simulated waveforms for this event. In contrast, the seawater stratification only reduced the tsunami speed, whereas the earth's elasticity loading was responsible for LNP due to the depression of the seafloor surrounding additional tsunami loading at far-field stations. This study revealed that the traditional shallow water model has inherent defects in estimating tsunami arrival, and the leading negative phase of a tsunami is a typical recognizable feature of a moderately strong transoceanic tsunami. These results also support previous theory and can help to explain the observed discrepancies.  相似文献   

我国省域工业主导产业的遴选与发展   总被引：1，自引：0，他引：1  

王乐乐  吴殿廷  姜晔 《地域研究与开发》2012,31(2):15-19,25

工业主导产业在国民经济发展中起着决定性和指向性的作用。主导产业的选择是经济发展阶段的重要课题。依据6个量化指标,从4个维度对"十一五"期间主导产业进行遴选,发现以能源及相关产业为代表的重化工业是各省的重点,高新技术产业成为主导产业的省份较少,劳动密集型产业依然是东部发达省市的重点,预期中的产业转移并未实现;以行业为变量对各省份的主导产业进行聚类分析,可将31个省份划分为5类,反映了我国各省份主导产业布局特点;在此基础上,依据产业生命周期理论和各地区"十二五"发展趋势,提出了相应的对策建议。  相似文献