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1.
<正>Dr.CHEN Deliang is now August R?hss Chair at the University of Gothenburg,Sweden.As an internationally renowned climatologist,he has made major achievements in the field of regional climate research in relation to atmospheric circulations,climate dynamics and climate change.He is member of the Royal Swedish Academy of Sciences,the Royal Society of Arts and Sciences in Gothenburg,and the  相似文献   

2.
<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  相似文献   

3.
Global warming is causing the climate to change, lakes to dry up and less rain to fall. In population ecology, researchers have found that climate change plays an important role in controlling the size of species populations. To proof this model long-term observational data are crucial, making researchers to turn to historical records of locust outbreaks.  相似文献   

4.
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.  相似文献   

5.
Global warming is causing the climate to change, lakes to dry up and less rain to fall. In population ecology, researchers have found that climate change plays an important role in controlling the size of species populations. To proof this model, long-term observational data are crucial, making researchers to turn to historical records of locust outbreaks.[1]  相似文献   

6.
Climate change has posed a major challenge to humankind. Currently the international society is giving it grave concern, Chinese government and the people from all walks of life in this country are also attaching great importance to this issue. This paper will propose two important issues in this field that deserve intense attention, in the hope of arousing due concerns and inspiring further research.  相似文献   

7.
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.  相似文献   

8.
Climate change is real There will always be uncertainty in understanding a system as complex as the world’s climate. However there is now strong evidence that significant global warming is occurring1. The evidence comes from direct measurements of rising surface air temperatures and subsurface ocean temperatures and from phenomena such as increases in average global sea levels, retreating glaciers, and changes to many physical and biological systems. It is likely that most of the warming in r…  相似文献   

9.
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） ...  相似文献   

10.
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   

11.
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.  相似文献   

12.
<正>Chinese Academy of Sciences and the German National Academy of Sciences Leopoldina stand united in their endeavor to promote the scientific spirit and to increase scientific excellence. The oldest academy in the West and the strongest academy in the East make the following declaration on the role and value of basic research and scientific advancement.Humankind is facing a broad range of serious challenges which are of global nature and effect. Examples are climate change, resource shortage or an uneven development, which  相似文献   

13.
The variability and dynamic mechanism of the East Asian monsoon climate is a major scientific puzzle in the exploration of global change. As early as in the late 1990s, a research team led by Prof. AN Zhisheng from the CAS Institute of Earth Environment started their work in this topic, with an objective of improving the hypothesis of monsoon-controlled East Asian environment and advancing the basic studies of past global changes in eastern Asia.  相似文献   

14.
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   

15.
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.  相似文献   

16.
<正>Tetracentron sinense(Trochodendraceae)is an Arcto-Tertiary relict with rich fossil records and a relatively broad extant geographical distribution that extends further south than the other Arcto-Tertiary relicts.It provides an excellent opportunity to explore the effects of late Cenozoic climate change in the East Asian temperate and subtropical floras.  相似文献   

17.
<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".  相似文献   

18.
正Increasing emissions of CO2 and other greenhouse gases have been facilitating global warming,which seriously threatens human life and social sustainable development.To curb the dangerous effects of climate change,we need to not only make deep cuts in emissions,but also enhance carbon sequestration.The ocean plays an important role in climate change mitigation thanks to its high potential in absorbing  相似文献   

19.
陆佳琳 《科教文汇》2008,(29):146-146
It is particularly important and necessary to try to make inlensive course interesting and effective for the students. Their study will become a lot more effective if the sludents eome to the classroom willingly instead of being forced to. That is 1o say, how a leacher can succeed in arousing the students＇ interest in intensive coarse mid making the students more active and aggressive in thinking, listening and speaking. For this purpose, we should change the leacher dominaled class for a student-centered one.  相似文献   

20.
Climate change is real There will always be uncertainty in understanding a system as complex as the world's climate. However there is now strong evidence that significant global warming is occurring1.  相似文献   

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