New Challenges and Opportunities for Flood Control in the Huai River: Addressing a Changing River-Lake Relationship

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.     

Revealing the Secret of Paleoclimatic Change Harbored by Loess Deposits in China

Is this planet growing warmer and warmer? What climatic change will occur in the future? To answer these big questions, however, the scientific community has to know first what happened in the geological history of the Earth, namely, the paleoclimatic change. With his half-centurylong research on loess deposition in China, Prof. Liu Dongsheng from the CAS Institute of Geology and Geophysics has unveiled an imposing paleoclimatic scenario happening in the Quaternary period; and more importantly, the work conducted by him and his colleagues and students has presented loess sediments in China as a complete and reliable databank of paleoclimatic change.     

Agroforestry Suggestions Based on Climatic Modeling

<正>Indigenous agroforestry systems have been practiced for centuries in the Himalaya Mountains and adjoining regions.With the increase of climate change associated risks,enhanced understanding of the impact of climate change and related phenomena on the potential distribution of agroforestry is increasingly useful and necessary,for both maintaining and improving yield and ecosystem function.In particular,increased understanding of these issues is crucial to identify both"haw"and"where"efficient and systematic response mechanisms can be developed in     

Space-based Observation for sensitive Factors of Global Change

Global change refers in the atmosphere, oceans, to anthropogenic changes biosphere, pedosphere and lithosphere over the past century. It is a long process with large dimensions. Factors sensitive to these changes mainly include performance factors （such as temperature and precipitation）, response factors （such as eco-system, natural disasters, water resources, variations in snow and ice）, and driving factors （greenhouse gases and reflection rates）. Global change has caught the attention of the world.     

The Future Development of Energy-Environment-Economy Integrated Assessment Modelling

<正>One of the greatest challenges faced by the energy and economic system is the risk of environmental and climate change.The models that have been developed to study the principle and dynamics of the energy,environment,and economic system are called the     

The Comparison between the International Population Aging and the Level of Economic Development

Population aging is a world problem, which will not only completely change the current population age structure, but also will change the labor supply, investment banking, savings deposits, labor productivity and inherent structure. Based on the author’s work and study experience, from an international perspective, in this paper,the relationship between population aging and economic development level is compared. This paper first puts forward that the population aging is a global trend, then this paper compares the relationship between the international population aging and the level of economic development, finally, it analyzes the relationship between the "old" and the "rich".     

Projects Underway

Project： The magnitude, rate and mechanism of climatic change during the past 2,000 years in China： A synthesis study
Principle Investigator：Prof. ZHENG Jingyun ＆ GE Quansheng     

Gravity Data Shows Water Storage Increase in North America and Scandinavia

Natural and anthropogenic stresses such as climate change,drought and deluge,increasing water use,land use and agricultural practices affect surface and groundwater resources globally.A small change in the hydrological cycle may have a significant socio-economic impact,which,for example,has recently been observed in the form of groundwater depletion in northwest India probably leading to reduction of agricultural output and shortages of potable water.It is thus of importance to determine the spatial and temporal variability in continental water storage.     

Hydrological Responscs to Climatc Changc in the Watcr Rccciving Arca of thc Middle Route Project for South-to-North Watcr Transfer

Climate change will lead to a significant alteration in the temporal and spatial pattern variation in the regional hydrological cycle, and the subsequent lack of water, environmental deterioration, flo...     

Strengthen China-Thailand Partnership in Remote Sensing to Combat Natural Disasters and Climate Change--An Interview with Dr. Anond Snidvongs, Executive Director of Geo-Informatics and Space Technology Development Agency （GISTDA）, Thailand

BCAS： You are an outstanding and influenial climate scienist in Thailand. What is the main concern for climate change in your country at present？ Dr. Snidvongs： Generally speaking, our concern is in three aspects. One is agriculture. The change in world climate and rain patterns may affect the production of crops in Thailand including rice, cassava and fruit trees.     

Hydrological Responses to Climate Change in the Water Receiving Area of the Middle Route Project for South-to-North Water Transfer

Climate change will lead to a signifi cant alteration in the temporal and spatial pattern variation in the regional hydrological cycle, and the subsequent lack of water, environmental deterioration, floods and droughts etc. And it is especially remarkable in semi-humid and semi-arid region. In this paper, the impacts of climate change on the hydrological cycle were analyzed for the Hai River Basin, a semi-humid and semi-arid basin and also the water receiving area of the middle route of South-to-North Water Diversion Project. Meanwhile it is the most vulnerable to climate change. Firstly, the linear regression and Mann-Kendall non-parametric test methods were used to analyze the change characteristics of the hydrological and meteorological elements for the period from 1960 to 2009. The results show a signifi cant increase in temperature, while precipitation decreases slightly, and runoff decreases drastically over the past 50 years. Secondly, the applicability of SWAT (Soil and Water Assessment Tool) model based on the DEM (Digital Elevation Model), land use and soil type was verif ied in the basin. Results show the model performs well in this basin. Furthermore, the water balance model, Fu’s theory and Koichiro’s theory were used to calculate the actual evaporation, comparing to the simulated actual evaporation by SWAT model to validate the result for the lack of large-scale observed evaporation datasets. Possible reasons were also analyzed to explore the reasonable factor for the decline of the runoff. Finally the precipitation, temperature, runoff and evaporation response processes based on the IPCC AR4 multi-mode climate models and the verifi ed SWAT model under different GHG emission scenarios (SRES-A2, A1B and B1) in the 21st century were discussed in three time periods: 2020s (2011-2040), 2050s (2041-2070), 2080s (2071-2099). Results show that there are systematic positive trends for precipitation and temperature while the trends for runoff and evaporation will differ among sub-areas. The results will offer some references for adaptive water management in a changing environment, also including adaptation of a cross-basin water transfer project.     

试论图书馆从信息服务走向知识服务

Through explaining the conceptions of information, knowledge, information service and knowledge ser-vice, the paper expounds the features and the limitations of information service, inquires into the contents and models of knowledge service, and points out that the change from information service to knowledge service is the need of the users'requirement for information and it is the inevitable development trend of information society.     

DNA Barcoding and the International Barcode of Life Project in China

<正>1.Scientific and Social Benefits of DNA Barcoding Along with the accelerated global trade and climate change,the needs for sustainable development and for understanding biodiversity are increasing.Rapid and accurate species identification and sustainable utility of biodiversity resources have become a great need for the world.     

To Enhance Observation and Regional Study in a New Era of Global Change Science——An interview with Prof. FU Congbin

As one of the domestic pioneers and internationally renowned experts on global change science, Prof. FU Congbin has been strongly involved in the study of climate variability and dynamics since the early 1980s. His research ranges from air-sea interaction to the aridity trend of northern China and the monsoon-driven ecosystems in East Asia.     

我国科技核心期刊动态性调查与分析

Based on the 2nd and 3rd editions of A Guide to Core Journals of China, this article makes an investigation on the change of the number, the variety and the ranking of the core journals of science and technology which are on the same subject. The basic dynamic characteristics of the core journals of science and technology in China are described.     

Bacteria in ice may record climate change

To many people, bacteria and climate change are like chalk and cheese： the smallestcreature versus one of the biggestphenomena on Earth. Not really. Scientists with the CAS Institute of Tibetan Plateau Research （ITP） and coworkers recently reported thatsmall bugs deposited in ice and snow might tell how our climate has been changing.     

网络经济的博弈论分析

Based on the non-asymmetrical information game theory, this paper analyzes the trust-agency mechanism in network economy, the change of the rules of the game and the strategies of the game in the network environment.     

Scientists Establish China's Longest Tree-ring Chronology

<正>The sequence of tree-ring chronologies from Sabina przewalskii Kom,recording climate change information over the past 4,600 years in the northeast of the Qinghai-Tibetan Plateau,has been recently revealed by scientists from China and the United Kingdom.Prof.YANG Bao from the Cold and Arid Regions     

Sustainable Management of Indigenous Vegetation

The vegetation in the transi-tional belts between theTaklimakan Desert and theoasis is not in the state of thirstyfor water as people thought, assertscientists of a Sino-EU project onsustainable management of the veg-etation in the foreland of oasis, andirrigation alone would not change thewater conditions of those plants.The key factor for a normal growthof the vegetation is to ensure a steadylevel of the underground water,which demands an intensifiedmanagement of water resources so asto ach…     

Volvo Environment Prize Goes to Chinese Climate Scientist

<正>Dr.QIN Dahe,a world renowned scientist in glaciology and climate change research,was awarded the 2013 Volvo Environment Prize for his outstanding contributions to the"scientific understanding of the climate,both in his own country of China and at the global level".