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2.
A study is made of the influence of the large-scale atmospheric circulation, described by the indices of Northern Hemisphere Teleconnection Patterns, on air temperature and ice-thermal characteristics of Lake Baikal for the time interval 1950–2010. Multiple linear regression equations have been obtained to account for 46–47% of the air temperature changes during the winter, spring and autumn seasons, and for 18% during the summer season. The main contribution to air temperature change for separate seasons (except in the summertime) and ice-thermal characteristics is made by the fluctuations of the AO and NAO indices characterizing the west-east transport of air masses, and of the SCAND and Sh indices of the mechanisms blocking this transport. 相似文献
3.
Summary On 29 October 1998, the RGS-IBG invited delegates to a conference entitled 'Social exclusion and the city', with Geoff Mulgan (founder of the think-tank Demos and a policy advisor to Prime Minister Blair) as the keynote speaker. The event was well attended, providing much useful insight into the government policies of the 'Social Exclusion Unit' and ongoing academic research into the processes and problems of 'social exclusion'. Here we provide some general observations on the conference and some suggestions regarding the possible directions of the debate on social exclusion and inclusion. 相似文献
4.
《The Professional geographer》2013,65(3):346-347
Mapping patterns of species richness is a longstanding tradition in biogeography and more recently in conservation planning. This paper describes the effects of sampling unit size on patterns of vertebrate richness across landscapes in the Intermountain Sagebrush and Rocky Mountain Forest ecoregions in Idaho. Variability of richness decreased with increasing size of the spatial sampling units at both sites, with greater overall variability in the forested site. Richness in the sagebrush region was best explained by alpha diversity, whereas beta diversity accounted for more of the variability in richness in the forested site. 相似文献
5.
Studies on frozen ground of China 总被引：5，自引：0，他引：5
1ThestatusoffrozengroundinChinaBased on previous studies, Zhou and Guo (1982) summarized the distribution characteristics of permafrost in China and indicated that the permafrost area in China is about 215×104 km2, in which about 163.4×104 km2 is on the Tibetan Plateau. After mapping and zonation of frozen ground in 1983, Xu and Wang suggested that the areas of permafrost, seasonally frozen ground and temporal frozen ground in China were 206.8×104 km2, 513.7×104 km2 and 229.1×104 km2 … 相似文献
6.
《地理学报(英文版)》2004,(Z1)
President:Zheng Du (Academician of CAS)Secretary-General:Dr. Zhu LipingAddress: 11A, Datun Road, Beijing 100101, ChinaE-mail: zhulp@igsnrr.ac.cn Website:www.cstp.org.cnThe China Society on Tibet Plateau (CSTP), led by the China Association of Science and Technology (CAST), is a national, scholarly and non-profit making organization consisting of scientists and technologists engaged in the research and construction of Qinghai-Tibet Plateau. It is a key social power for promo… 相似文献
7.
Rangeland degradation on the Qinghai–Tibetan Plateau is a growing concern, often attributed to climate change and overgrazing. A minority of researchers have suggested instead that degradation may be caused by changes in land management, particularly enclosures and the contracting of long-term rangeland use rights to households. However, these claims have been hampered by a lack of empirical evidence. This field experiment is the first to compare rangeland conditions over time in the case of different management regimes on the Qinghai–Tibetan Plateau, specifically single-household versus multi-household management. A survey of vegetation properties in Maqu County, Gansu province in 2009, and repeated in 2011, examined the differences between single- and multi-household management in terms of vegetation biomass, cover, and species richness. In 2009, the biomass of the sedge group under multi-household management was significantly higher than that under single-household management. In 2011, biomass, vegetation cover, and species richness were all significantly higher under multi-household management than single-household management. These data suggest the flaws of the tragedy of the commons assumptions underlying single-household management. 相似文献
8.
Exploring the spatial zoning of urban territories and their ecological effects under different decision preferences is an important approach to promote the sustainable utilization of regional resources. This paper constructs an index system for evaluating the suitability of territorial space development from the perspectives of urban development, agricultural production, and ecological conservation. It predicts and simulates the trade-offs between territorial space development and protection in ... 相似文献
9.
Book Reviews are in this articles. Managing and Marketing of Urban Development and Urban Life. GERHARD O. BRAUN, ed. Berlin: Dietrich Reimer Verlag, 1994. Abhandlungen-Anthropogeographie, Bd. 52. xv and 687 pp., maps, diags., and biblio. DM 129.00 paper (ISBN 3-496-02560-3). Evolution of Infectious Disease. PAUL W. EWALD. New York and Oxford: Oxford University Press, 1994. viii, 298 pp., diags., index, glossary, and biblio. $35.00 cloth (ISBN 0-19-506058-X). Upstate Arcadia: Landscape, Aesthetics, and the Triumph of Social Differentiation in America. PETER J. HUGILL. Lanham, MD and London: Rowman and Littlefield, 1995. xvi and 255 pp., maps, tables, photos, biblio, and index. $61.50 cloth (ISBN 0-8476-7855-5); $24.95 paper (ISBN 0-8476-7856-3). Urban Land Use Planning. 4th ed. EDWARD J. KAISER, DAVID R. GODSCHALK, and F. STEWART CHAPIN, JR. Urbana: University of Illinois Press, 1995. xv and 493 pp., tables, figs., and index. $40.00 cloth (ISBN 0-252-02101-0). The Asian Pacific Rim and Globalization: Enterprise, Governance and Territoriality. RICHARD LE HERON and SAM OCK PARK, eds. Brookfield, VT: Avebury Publishing Group, 1995. xiv and 188 pp., maps, diags., and biblio. $55.95 cloth (ISBN 1-85628-894-3). The Global Casino: An Introduction to Environmental Issues. NICK MIDDLETON. New York and London: Edward Arnold, 1995. 332 pp., maps, figs., and biblio. $26.95 paper (ISBN 0-340-59493-4). A Geography of Pennsylvania. E. WIL-LARD MILLER, ed. University Park: Pennsylvania State University Press, 1995. xviii and 406 pp., maps, photos, tables, figs., biblio., and index. $75.00 cloth (ISBN 0-271-01017-7); $25.00 paper (ISBN 0-271-01342-7). Mountain Environments and Geographic Information Systems. MARTIN F. PRICE and D. IAN HEYWOOD, eds. Bristol, PA, and London: Taylor &; Francis, 1994. xiv and 309 pp., figs., tables, maps, plates, biblio., and index. $95.00 cloth (ISBN 0-7484-0088-5). Geographical Data Analysis. NIGEL WAL-FORD. New York and Chichester: John Wiley &; Sons, 1995. xi and 446 pp., apps., index, and biblio. $59.95 paper (ISBN 0-471-94162-X). 相似文献
10.
Situated in the hinterland of Eurasia, Central Asia is characterized by an arid climate and sparse rainfall. The uneven spatial distribution of water and land resources across the region has pressured economic and social development. An accurate understanding of Central Asia’s water resources carrying capacity(WRCC) is vital for enhancing the sustainability of water resources utilization and guiding regional economic and social activities. This study aims to facilitate the sustainability of wate... 相似文献
11.
《地理学报(英文版)》1991,(2)
The EEC has awarded several projects toEuropean chemometricians in its COMETTprogram.The objective of the COMETTprogram is to organize industry-orientatedtraining on a trans-national level in advancedtechnological subjects.The program is open to alltwelve EEC countries and also to the EFTAcountries (Norway,Sweden,Finland,Iceland,Austria and Switzerland).Four types of projectswere awarded,namely:(i) Creation of a network for analysingtraining needs,organizing exchanges,publicizing courses and learning material,etc.This network is called 相似文献
12.
Sun K.Si Y. 《世界地理研究》2023,(9):109-119
The geographical flow of talents is affecting innovation activities worldwide, so the research on the spatial structure evolution of talent flows is particularly important. This article uses the 2014-2015 global list of highly cited scientists as raw data to retrieve the study and work experience of scientists, uses cities as the research scale, and uses the P-space model to build a highly cited Chinese scientist flow network. At the same time, uses quantile regression analyzes the impact of whether scientists in core cities are more productive. We found that: (1) The city network of highly cited Chinese scientists has the characteristics of a small-world network, and the network space structure presents a "Y-shaped" structure. China-U. S., China-Europe, and China-Australia are the main sides. (2) This article analyzes the source cities and the target cities in which scientists move, and finds that Beijing, Cambridge(UStates), Shanghai are the city with a high degree. (3) The distribution of scientists shows a trend of spreading with the development of the stage. (4) Scientists in core cities have more high-quality paper output. The increase in the degree of centrality of scientists' target cities has a greater impact on the output of scientists. © 2023 World Regional Studies. 相似文献
13.
Mobile internet and wireless communication technologies have produced unprecedented location-aware data. Such big geospatial data can be used as a proxy measure of the ‘digital footprints' left by us on the planet and provide a valuable opportunity to understand the dynamic and short-term human disturbance on the nature at fine scales. This study investigated the spatiotemporal variations of human's digital footprints on the Qinghai-Tibet Plateau using smartphone-users-generated Tencent's location request data. The results showed that human's digital footprints cover less than 5% of Qinghai and Tibet, exhibiting either a U-shaped or an N-shaped temporal change pattern during the major festivals. Spatial changes of the digital footprints manifested a transition process from dispersion to concentration in Xining and Lhasa. Human disturbance assessment of seven large nature reserves on the plateau showed that the Qinghai Lake is the most disturbed one as shown by 14.6% of its area is stained with human digital footprints and the areal average of footprint intensity is 1.59, and the disturbance was significantly escalated during the National Day holiday. By contrast, the Qangtang and Hoh Xil are the least affected nature reserves with the two indices less than 1% and 0.1, respectively. 相似文献
14.
TANG Guo-an~ Josef Strobl~ GONG Jian-ya~ ZHAO Mu-dan~ CHEN Zhen-jiang~ 《地理学报(英文版)》2001,11(2):209-216
1 IntroductionDigital elevation model (DEM) is digital representation of relief. It is one of the most important components in the database of GIS. At present, DEM is playing a key role in the field of survey and mapping, remote sensing and almost all the terrain related geographical analyses. DEM can be grouped into regular grids (raster) and triangulated irregular networks (TIN). Both have their advantages and disadvantages in application. It is generally believed that grid DEM will … 相似文献
15.
《地理学报(英文版)》2003,(4)
The International Conference on Water Security for Future Generations will be held at theNortheast Institute of Geography and Agricultural Ecology (NEIGAE), Chinese Academy ofSciences in Changchun, Jilin Province, P.R. China, from 26 - 31 July 2004. Expansion in agricultural activity throughout the world in order to sustain an ever-increasingpopulation, together with the more frequent droughts caused by climate variability, has resulted inmajor water shortages, which is the essence of main concern to all Governments and individuals. 相似文献
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17.
Gretel Boswijk 《New Zealand geographer》2010,66(2):124-137
This paper explores how the recent history of kauri is remembered and commemorated on the Kauri Coast, western Northland, focusing on three specific heritage sites: The Kauri Museum at Matakohe, Trounson Kauri Park, and Waipoua Forest Sanctuary. Each site was established to preserve elements of the past before they were lost or irrevocably altered. The museum commemorates the pioneers and the kauri timber and gum industries, while Trounson Kauri Park and Waipoua Forest were intended to represent primeval forest and stand as monuments to people who advocated their protection. 相似文献
18.
《地理学报(英文版)》1948,(1)
Although records on the Yellow River are voluminous, they are often overburdened with great engineering details and scattered in a large number of technical journals and publications as to be not readily available to geographical students.“A Symposium on the Yellow River”. 相似文献
19.
Siqin Tong Jiquan Zhang Yuhai Bao Quan Lai Xiao Lian Na Li Yongbin Bao 《地理学报(英文版)》2018,28(5):595-610
This study analyzed the spatial and temporal variations in the Normalized Difference Vegetation Index (NDVI) on the Mongolian Plateau from 1982–2013 using Global Inventory Modeling and Mapping Studies (GIMMS) NDVI3g data and explored the effects of climate factors and human activities on vegetation. The results indicate that NDVI has slight upward trend in the Mongolian Plateau over the last 32 years. The area in which NDVI increased was much larger than that in which it decreased. Increased NDVI was primarily distributed in the southern part of the plateau, especially in the agro-pastoral ecotone of Inner Mongolia. Improvement in the vegetative cover is predicted for a larger area compared to that in which degradation is predicted based on Hurst exponent analysis. The NDVI-indicated vegetation growth in the Mongolian Plateau is a combined result of climate variations and human activities. Specifically, the precipitation has been the dominant factor and the recent human effort in protecting the ecological environments has left readily detectable imprints in the NDVI data series. 相似文献
20.
Modeling the impacts of climate change on China''s agriculture 总被引：1，自引：0，他引：1
1 Introduction Since recognition of the potential climate change [IPPC, 1990], efforts have been made to estimate the economic impacts of projected changes in climate on important sectors, such as agriculture, forestry and ecosystem, coastal zones and fisheries, water resource, and energy development. Although several sectors have been studied, none have received more attention than agriculture. Countrywide economic analysis has been completed for the United States[1-4], India[5] and Brazil… 相似文献