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Résultats de la recherche (122 résultats)

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  • Ecological landscape effects of windbreak systems in dsert zone of Western China
  • Arid area ; China ; Desert ; Desertification ; Ecosystem ; Forest ; North-Western China ; Oasis ; Soil conservation ; Wind ; Wind erosion
  • of China's desert, and especially of desert zone in western China. Furthermore, direct economic benefits are summarized.
  • 1997
  • A verification on division of hydroclimatic area in China seas using digital characteristic of frequency distribution
  • Air temperature ; China ; Climatic zone ; Cluster analysis ; Marine hydrology ; Principal components analysis ; Sea ; Surface temperature ; Water temperature
  • 1953-1988 oceanographic data files on the China Seas prepared by the National Marine Data, China, and the 1953-1982 reports of sea surface monthly mean temperature in the East China Sea by the Meteorological Agency, Japan, were used to calculate
  • the digital characteristics of frequency distribution of sea and air temperature in 153 areas in the China seas. Principal factor analysis and fuzzy cluster ISODATA were used to divide the China hydroclimatic area into 3 climatic zones including 10 climatic
  • 1997
  • An assessment of fishery yields from the East China Sea ecosystem
  • China ; Eastern China ; Ecosystem ; Fishing ; Sea
  • 1997
  • A study on the relationship of regional urbanization and socio-economic structure in China
  • China ; Regional development ; Socio-economic system ; Urbanization
  • 1997
  • A study on field water circulation pattern in the dryland of northern China
  • Agropedology ; Arid area ; China ; Crop ; Drought ; Evaporation ; Northern China ; Precipitation ; Soil moisture ; Soil water ; Water circulation
  • Based on the observed data of soil water from locating experiments between 1986 and 1990, using the water balance, this paper studies the field water circulation law of main crops in northern China, where the mean annual precipitation is 300-600 mm
  • 1997
  • The impacts of global change on desertification in China
  • Arid area ; Carbon dioxide ; China ; Climatic variation ; Concept ; Desert ; Desertification ; Global change ; Greenhouse effect ; Precipitation ; Semi-arid area ; Statistics ; Temperature
  • Based on meteorological data obtained from more than 700 meteorological stations in 30 years running in China, the A. made statistical analysis of China's arid area by applying Thornwaite's formula. The development of desertification
  • 1997
  • Ethnic minorities on the borderlands of Southwest China
  • Agriculture ; Asia ; Burma ; China ; Cultural studies ; Ethnic community ; Language ; Laos ; Migration ; Minority ; Resource management ; Settlement ; South-Eastern Asia ; Thailand ; Trans-border area ; Tribe ; Vietnam ; Village
  • Onomastic, orthographic, dialectal and dialectical borders : the Lisu and the Lahu. From Southwest China into Upper Indochina : an overview of Hmong (Miao) migrations. Claiming and naming resources on the border of the state : Akha strategies
  • in China and Thailand. Orally transmitted texts of the minorities in East and Southeast Asia : suggestions for research across borders. What does foreign aid for education contribute to the maintenance of indigenous knowledge in Laos, Thailand, and Vietnam
  • ? Relationship changes between lowlander and hill tribes in Xishuangbanna, China.
  • 1997
  • Holocene variations of the Yanzigou Glacier (Gongga Shan Massif, Da Xueshan, China)
  • China ; Glacier ; Glacier fluctuation ; Holocene ; Palaeo-environment
  • 1997
  • On bio-effects on karst landscape in Jiuzhaigou conservation, Sichuan Province, China
  • Biogenic process ; China ; Dammed lake ; Erosion ; Hydrochemistry ; Karst ; Microstructure ; Sichuan ; Tufa
  • 1997
  • Studies on progress of urbanization in China
  • China ; Counterurbanization ; Urban development ; Urban growth ; Urbanization
  • 1997
  • Determinants of state investment in China, 1953-1990
  • China ; Economic base ; Ideology ; Investment ; Regional development ; Regional disparities ; State control
  • This study focuses on one important force that affects China's regional development : state investment in basic construction. The more developed eastern region always enjoyed a greater proportion of state investment than the other regions
  • 1997
  • The impact of environmental degradation on grain production in China, 1975-1990
  • Agricultural productivity ; Agricultural technique ; Agriculture ; Cereal ; China ; Crop ; Environmental degradation ; Regional disparities ; Soil erosion
  • The AA. hypothesize that environmental degradation had a major effect on grain production in many of China's agricultural areas. A nationwide fixed effect grain-yield function is introduced which incorporates both traditional input variables
  • 1997
  • Micromorphological variation of the S1 paleosol across northwest China
  • Biogenic process ; China ; Clay mineral ; Leaching ; Loess ; Micromorphology ; Monsoon ; Palaeo-environment ; Palaeosol ; Pedogenesis ; Plateau ; Precipitation
  • to the development of the S1 paleosol in northwest China. This approach concentrates in particular on differences in the resolution and types of pedosedimentary processes and features.
  • 1997
  • Land degradation and its management in the arid and semi-arid areas of China
  • Arid area ; China ; Desert ; Desertification ; Drought ; Irrigation ; Oasis ; Over-grazing ; Regional planning ; Semi-arid area ; Soil erosion ; Water resources
  • In the arid and semiarid areas of China, human actions play a significant role in desertification processes. The main problems are the reduction of biomass, decline of preferred species and soil erosion induced by overgrazing. The AA. show the land
  • 1997
  • Distribution patterns of leaf area index for major coniferous forest types in China
  • AVHRR ; Biogeography ; China ; Conifer ; Ecosystem ; Forest ; Model ; NOAA ; Remote sensing ; Spatial distribution ; Vegetation index
  • on a lot of forest plots, the mathematical models of LAI distribution patterns in the hydro-thermal spaces for 5 coniferous forest types in China were established.
  • 1997
  • Food security of China and Lester Brown's point of view
  • Agricultural production ; China ; Crop ; Food ; Food security ; Population growth
  • A la suite de la publication de l'article et de l'ouvrage de L. Brown Who will feed China, une série de discussions ont été engagées dans le pays ainsi qu'à l'étranger. Les AA. effectuent une analyse en profondeur de ses principaux points de vue
  • 1997
  • Ecological and socio-economic rehabilitation in the karst of Southwest China
  • China ; Ecology ; Ecosystem ; Environmental degradation ; Environmental management ; Guangxi Zhuang ; Guizhou ; Karst ; Model ; Soil erosion ; Sustainable development ; Water quality ; Yunnan
  • The karst of Southwest China is a typical representative of poverty-stricken region with impoverishment-degradation spiral. To essentially break away from this vicious circle, the local ecology, economy and society should be rehabilitated, and hence
  • 1997
  • Deep-seated, complex tunnel systems. A hydrological study in a semi-arid catchment, Loess Plateau, China
  • Arid area ; China ; Drainage ; Gully erosion ; Hydrology ; Loess ; Plateau ; Precipitation ; Rill wash ; Semi-arid area ; Shanxi ; Watershed
  • A monitoring program was conducted during 1989 and 1990 in the Yangdaogou, a small subbasin of the Loess Plateau in North China, and all of the tunnel outlets observed to be active were investigated. The preliminary results on tunnel flow hydrology
  • 1997
  • The new development of rural China
  • China ; Industrialization ; Rural area ; Rural economy ; Rural industry
  • The rural reforms in China are going on since 1978, dissolving the people's communes and adopting the household responsibility system. They introduced collective land ownership by the villages and the peasant's right to manage and use it. The new
  • 1997
  • The third China ? Emerging industrial districts in rural China
  • Agglomeration ; China ; Enterprise ; Flexibility ; Industrial district ; Industrialization ; Investment ; Network ; Production system ; Rural area
  • 1997