Effects of precipitation variation on severe acid rain in southern China
Acid rain ; China ; Climatic change ; Climatic data ; Interannual variability ; Pollution ; Precipitation ; Seasonal variation ; Southern China ; Spatial distribution ; Sulphur dioxide ; The 1990's ; The 2000's
The AA. present the effects of the regional precipitation trend change on the area and intensity of severe acid rain in southern China. The spatio-temporal distribution characteristics of SO2 and NO2 are analysed. The significant increase in summer
rainfall in the south of the Yangtze River in 2000-2006. Therefore, the change in seasonal precipitation is an important factor in the severe acid rain regions moving eastward and expanding in southern China.
Isotopic composition of precipitation over arid northwestern China and its implications for the water vapor origin
Arid area ; China ; Deuterium ; Isotope analysis ; Model ; North-Western China ; Oxygen 18 ; Precipitation ; Regression analysis ; Water vapor
In order to reveal the characteristics and climatic controls on the stable isotopic composition of precipitation over Arid Northwestern China, 8 stations have been selected from Chinese Network of Isotopes in Precipitation (CHNIP). During the years
2005 and 2006, monthly precipitation samples have been collected and analyzed for the composition of δD and δO 18. Spatial distributions of δO 18 have properly portrayed the atmospheric circulation background in each month over Arid Northwestern China
China ; Evaporation ; Hydrodynamics ; Hydrogeology ; Infiltration ; Natural recharge ; Northern China ; Plain ; Precipitation ; Runoff ; Underground water
The groundwater level of 39 observation wells including 35 unconfined wells and 4 confined wells from 2004 to 2006 in North China Plain (NCP) was monitored using automatic groundwater monitoring data loggers KADEC-MIZU II of Japan. The automatic
groundwater sensors were installed for the corporation project between China and Japan. Combined with the monitoring results from 2004 to 2006 with the major factors affecting the dynamic patterns of groundwater, such as topography and landform, depth
Soil indicators for eco-geographic regionalization : a case study in mid-temperate zone of eastern China
China ; Eastern China ; Ecogeography ; Ecosystem ; Indicator ; Principal components analysis ; Soil ; Soil properties ; Spatial distribution ; Temperate zone
, soil types were often taken as a basis for soil regionalization. Based on the second China's national soil survey data and the provincial soil resource information, by principal analysis and discriminant analysis, this paper dicusses the appropriate
zone of eastern China which are organic matter content, cation exchange capacity, pH, clay content and bulk density in topsoils. By cluster analysis it is proved that these soil indicators are better than the soil types and soil regionalization
Natural environment suitability for human settlements in China based on GIS
China ; Environment ; Environmental management ; Geographical information system ; Human occupation ; Index ; Model ; Natural environment ; Population ; Population density ; Spatial distribution
This paper sets up the Human Settlements Environment Index (HEI) model and evaluates the natural environment suitability for Human Settlements in China based on GIS technology. The results show that the HEI of China decreases from southeast
Results and discussion of simulated rainfall experiments with different rainfall intensities and durations completed in an experimental plot in mountainous area of North China. Simultaneously, rainfall, surface runoff, soil-layer flow, mantel-layer
Wind tunnel investigation of the influence of surface moisture content on the entrainment and erosion of beach sand by wind using sands from tropical humid coastal southern China
In this study, the AA. investigated the influence of surface moisture contents (at 1mm depth) on sand entraiment and erosion using tropical humid coastal sands from southern China. Shear velocities were deduced from velocity profiles above the sand
process above wet surfaces such as those that are found on tropical humid beaches in southern China.
Transboundary water vulnerability and its drivers in China
China ; Drought ; Ecosystem ; Flood ; International cooperation ; Trans-border area ; Vulnerability ; Water ; Water management ; Water pollution ; Water quality ; Water resources ; Watershed
Competitive use of transboundary freshwater resources is becoming one of the key factors influencing regional peace and political relationship among states. In China, 18 major international river basins are concentrated in 3 regions. In this paper
, the AA. analyzed the major drivers affecting shared water vulnerability in China, namely : 1) changes in physical conditions affecting the availability of water; 2) competing objectives between economic development and ecological conservation; 3) lack