This paper studies soil erosion in the typical region of southern China based on remote sensing, GIS techniques and gray forecast model, and examines the relation between land-cover change and the dynamics of soil erosion.
and Tanggya) and the meteorological data of the 3 meteorological stations (Damxung, Lhasa and Tanggya). The trends and the change points of runoff and climate from 1956 to 2003 were detected using the nonparametric Mann-Kendall test and Pettitt-Mann-Whitney
change-point statistics. The correlations between runoff and climate change were analyzed using multiple linear regression. Discussion of the results.
The aims of this study were (1) to examine soil organic carbon (SOC) sequestration in both the topsoil and subsoil during plantation forest establishment on marginal arable land and (2) to detect changes in the inorganic carbon (SIC) pool and its
Some thermodynamic criteria for river channel changes
A theoretical model of river channel changes is presented, which shows some nonequilibrium thermodynamic criteria of a river channel to bedding and equilibrium.
Markets in the Chinese countryside : the case of rich Wang's village
On doit interpréter le changement social dans la Chine rurale comme une interaction complexe d'effets globaux, d'actions nationales et régionales, et de systèmes d'évaluation en concurrence. Ce modèle implique que différentes formes de marchés se
Drawing from 2 sets of remote sensing data (1986 and 2000) and field investigations, the ecological index method was used to document ecosystem changes in the Yangtze and Yellow River source regions of central Qinghai-Tibet. Over this period
, climatic changes led to considerable degradation of alpine meadows and steppes : changes in soil physical properties; losses in soil available Fe, Mn and Zn; losses in soil organic matter and total nitrogen.
of the ostracod assemblages and the ostracods ecological features, which are sensitive to the changing environment, 3 main stages can be distinguished. These results elucidate the history and process of the environmental changes in this area.
land use change and its driving forces on the Tibetan Plateau during 1990-2000
Changement climatique ; Chine ; Domaine aride ; Développement durable ; LANDSAT ; Planification ; Plateau ; Qinghai ; Système d'information géographique ; Télédétection ; Utilisation du sol
Arid area ; China ; Climatic change ; Geographical information system ; LANDSAT ; Land use ; Planning ; Plateau ; Qinghai ; Remote sensing ; Sustainable development
The aim of this paper is to analyze land use change pattern using a geographical information system (GIS) and patch analysis methods and to discuss its driving forces based on the climatic changes and socioeconomic development, which will benefit
the process study of land use change and land-use planning on the Tibetan Plateau.
Borough ; China ; Demographic change ; Economic development ; Elderly people ; Land tenure ; Rural-urban relations ; Town ; Town planning ; Urban environment ; Urban population ; Urbanization
dominated by natural wetland. The results provide important reference to protection and restoration of wetland ecosystem, regulation and utility of wetland resources, and a scientific basis for monitoring wetland change in the region.