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1.
Rainfall and air temperature data from six meteorological stations above the Bengbu Sluice and hydrological and water resources evaluation data from the Bengbu Hydrological Station in the Huai River Basin from 1961 to 2008 are used to analyze the impact of changes in climatic factors on the amount of water resources in the Basin. There was a general trend of rise in its average annual air temperature, with the highest increase of 0.289oC/10a recorded at Bengbu in Anhui Province. Rising rainfall was mainly observed in the western part of the study area, while rainfall actually declined in the eastern part, i.e. the middle reaches of the Huai River. The Average rainfall in the study area was in a vaguely declining trend. In other words, the rainfall in the Basin is still much affected by natural fluctuations. On the whole, there was a trend of gradual decrease in the quantity of the Basin’s water resources for the period under study. Water resources quantity is found to fall with decreasing rainfall and rising air temperature. Regression analysis is used to establish a mathematical model between water resources quantity and climatic factors (i.e. air temperature and rainfall) in order to explore the impact of climate change on water resources in the Basin. Moreover, various scenarios are set to quantitatively analyze the response of water resources to climate change. Sensitivity analysis shows that changes in rainfall have a much bigger impact on its water resources quantity than changes in its air temperature. 相似文献
2.
YU Jingjie & WANG Ping 《中国科学院院刊(英文版)》2012,(1):68-75
Water is the foundation of an arid ecological system, as the quantity and quality of surface water and groundwater determine its structure and function. The study on the relationship between water and ecosystem is the basis of ecosystem protection. Taking the Ejina delta, an extremely arid area located downstream of the Heihe River in northwestern China, as an example, this article gives an overviewe of the study in three aspects: (1) the groundwater table and salinity dynamics and their driving factors, (2) the groundwater depth and salt threshold of natural vegetation ecosystem, and (3) the impact evaluation of ecological flow control on Ejina natural vegetation. The authors point out the importance of the research into the relation between water and ecosystem and its key difficulties and weakness, and put forward strategies for promoting the study processes. 相似文献
3.
《中国科学院院刊(英文版)》2017,(3)
<正>Energy is the key to our future.Whether to the production,storage or use of energy,carbon materials could provide a good solution.They are closely related to people’s daily life and regarded as one of the most promising candidates for the flexible electrodes in energy storage devices.Recently,a research team from the Qingdao Institute of Bioenergy and Bioprocess Technology,Chinese Academy of Sciences prepared a well-defined 相似文献
4.
Engineering nano-materials ＆ their impact on human health or environmental security constitute a newly emerging R＆D hot spot and a key problem now urgently waiting for its solution in supporting the su... 相似文献
5.
FENG Yuan SHI Hong-ping 《科技风》2011,(18):23-24
The research value of the right of resistance in the administrative law has been highlighted gradually in recent years with the enhancement of legal awareness and the increase of administrative cases in our country.In this paper,based on the concept and characteristics of the administrative counterpart’s right of resistance and the present situation of its development in our country,a conception of system of administrative counterpart’s right of resistance is proposed with the use of the regulations concerning the right of resistance in other countries for reference. 相似文献
6.
《中国科学院院刊(英文版)》2016,(3)
At long last,after two decades of endeavor,China’s first high energy astrophysics research probe is about to take of f.The 2.5-ton Hard X-ray Modulation Telescope(HXMT),which is set to be sent 550 km above the ground early2017,will be carrying a trio set of detectors to gather X-rays emitted by black holes and neutron stars in the 1-250ke V band,and enable Chinese scientists to explore the distribution and property of these mysterious sources–with their own data,for the first time in history,in the next four years or more.In August,BCAS reporter XIN Ling had the privilege to meet astrophysicist ZHANG Shuangnan of the Institute of High Energy Physics(IHEP),Chinese Academy of Sciences who is now principal investigator of the HXMT project.During the interview,ZHANG talked about the telescope’s research missions,potential challenges in orbit,as well as its history and lessons to be learned in developing one of the nation’s first science satellites. 相似文献
7.
《中国科学院院刊(英文版)》2018,(2)
正Chinese President Xi Jinping called for efforts to develop China into a world leader in science and technology at the opening ceremony of this year’s CAS General Assembly in Beijing.Xi said as China strives for prosperity and rejuvenation,it needs to devote a huge amount of resources to promoting science and technology,and endeavor to become a world center for science and innovation.Referring to the situation as"pressing",the President called on the country's science and technology 相似文献
8.
《中国科学院院刊(英文版)》2005,(3)
As a result of their three- year studiesin Drosophilae (fruit flies), CAS scientists reveal that the memory and learning in the insect could be enhanced by stimuli com- bining olfactory (or smell) and visual signals. In its evolutionary history, an organism could develop various sen- sory modalities (or channels) in the form of sight, hearing, smell, taste, touch and pain. These modalities serve as interfaces or pathways for the brain to exchange data with the outside world. In the merciless… 相似文献
9.
《中国科学院院刊(英文版)》2008,22(3):151-153
Soon after the devastating earthquake taking place on last 12 May in Sichuan, the CAS leadership promptly mobilized its researchers to dedicate their expertise to the nationwide drive of the disaster＇s relief and reduction. A leading group was established to coordinate the Academy＇s efforts in this regard. All of the eight CAS institutions located in Sichuan were organized to do everything possible to reduce their losses to the minimum. At the same time, a trans-departmental and interdisciplinary taskforce was formed to provide a powerful S＆T backing for the nationwide drive. 相似文献
10.
《中国科学院院刊(英文版)》2013,(3):139-139
une 2013 witnessed two milestones in China＇s low- carbon development endeavor. On June 14, the State Council announced a suite of strict measures aimedat cutting air pollution by 30% in heavy-polluting industries within five years＇ time. Four days later, on June 18, China rolled out its pilot scheme for carbon trading in seven cities and provinces, a big move toward curbing carbon dioxide emissions and mitigating climate change. Tough as the battle against carbon-intensive growth mode may be, China has fired the first salvo and shown its determination to shoulder due responsibility for a greener globe. 相似文献
11.
《中国科学院院刊(英文版)》2008,22(4):199-200
Following its investigation of aweto （or Chinese caterpillar fungus） resources carried out from May to July 2007 on the Tibetan （or Qinghai-Tibet） Plateau, the central producing area of this precious ingredient for traditional Chinese medicine （TCM）, the Xishuangbanna Tropical Botanical Garden （XTBG） under CAS conducted a further survey from May to July 2008 in the marginal habitats of this fungus. 相似文献
12.
《国家科学评论(英文版)》2014,(1)
In this review,we focus on the conined water that exists in one-dimensional micro/nano composite structures,particularly inside biological nanochannels.Using these nanochannels as inspiration,we discuss a strategy for the design and construction of biomimetic smart nanochannels.Unique features of the inner surfaces of a nanochannel’s wall have similar properties to living systems.Importantly,the abiotic analogs have potential applications in,for example,sensing,energy conversion and iltering. 相似文献
13.
ZHANG Min XIA Jun & HONG Cheng Huai River Water Resources Commission Ministry of Water Resources Bengbu Anhui China State 《中国科学院院刊(英文版)》2012,(1):40-47
This paper addresses the change of the river-lake relationship in the Huai River and its causes due to environmental change and human activities. A preliminary analysis is made from three aspects: (1) the natural geographical change particularly captured by the Yellow River, (2) water conservancy project construction, and (3) socioeconomic development in the Huai River Basin. Key problems of changes in this river-lake relationship and the Huai River flood control are tackled, involving flood control and disaster alleviation ability of the Basin, engineering and non-engineering measurements applied to flood control and disaster mitigation, and water governance for adaptive management. Research shows that the Huai River is a rather complex one due to its complex geography with a hybrid wet and dry climate zoon, and higher population density. With the alternation of the river-lake relationship and socioeconomic development in the region, new problems keep arising, imposing new requirements on its sustainable water management. Thus, understanding the Huai River is a long and gradually improving process. Its future planning should keep absorbing new achievements of science and technology development, employing new technologies and methods, and gradually deepening our understanding of its fundamental principles. Water governance and adaptive water management will be new challenges and opportunities for the Basin in its river system change and flood control. 相似文献
14.
《中国科学院研究生院学报》1990,(1)
In this article, a new model of establishing flexible and utility bi-bliographic systems dependent on microcomputer or minicomputer is di-scussed and compared with the models of large systems and PC-basedsystems. A practical example based on this model, Union Catalog Systemof Serials in Western Languages, is used to show our solution for thedevelopment and utilization of the systems of this kind. 相似文献
15.
《中国科学院院刊(英文版)》2012,26(2):123
The Chinese Academy of Sciences convened its Annual Work Conference in Beijing from January 16 to 18, 2012. At the opening session, CAS President BAI Chunli delivered a work report to more than 400 officials from CAS institutions across the nation, looking back on the Academy’s major achievements in 2011 and blueprinting its strategic development for the year ahead. He urged CAS institutes to further concentrate their research 相似文献
16.
A group of Chinese US botanists recently completed their one-and-half-month survey of plant biodiversity in the Hengduan Mountains in southwest China one of the richest gene pools on Earth. By trekking for more than km the botanists collected primary data in the northern Sichuan basin noted for their floral diversity fragility of crucial significance.…… 《中国科学院院刊(英文版)》2008,22(1):5-5
Agroup of Chinese and US botanists recently.completed their one-and-half-month survey of plant biodiversity in the Hengduan Mountains in southwest China, one of the richest gene pools on Earth. By trekking for more than 10,000 km, the botanists collected primary data in the northern Sichuan basin noted for their floral diversity fragility and of crucial significance. 相似文献
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18.
学科影响因子：我国各学科发展趋势评价 总被引：17，自引：0，他引：17
Using the figures of the Chinese sci-tech papers collected and cited by Sc/ence Citation Index from 1989 to 1998 as an evaluation reference, this paper specifies a subject impact index. And using this subject impact index as an e- valuation factor, this paper analyzes the development trend of various disciplines in China in the past 10 years. 相似文献
19.
Nzeqqe Chantale Ebude Wang Mingyan 《科技广场》2007,(7):6-8
Most traffic control systems available in major cities in Cameroon are still out dated, make use of theories and models which are very slow to implement, waste resources and their efficiency is very low. Thus the number of road accidents encountered on our major highways and inter urban traffic networks has been increasing despite the various efforts made by government and certain NGO to synthesize road users on certain aspects of traffic control and safety road use. Taxis are not left out in the whole show and most of the blame always falls on them. The need to use available Information and Communication Technology ICT to improve on the control of traffic in inter urban cities and major highways is imperative. ITS optimizes the use of resources, reduce pollution, contribute to environmental protection and increases the national economy. . This paper starts by giving a brief situation of the transportation system in Cameroon, its drawbacks and proposes an optimized ITS based system. 相似文献
20.
《中国科学院院刊(英文版)》2017,(2)
<正>On June 12 at a news release held in Beijing,the Chinese Academy of Sciences(CAS)announced the release of its Report on Remote Sensing(RS)Monitoring of China Sustainable Development 2016(later referred to as"Report"),providing support for the implementation of the 13th National Plan of the country with scientific data.This also marks the first volume of the Academy’s serial 相似文献