Based on precipitation data from 157 meteorological observation stations from 1960 to 2004 in Northwest China(73°~113°E,30°~50°N),Sen's Slope and Mann-Kendall non-parametric methods are applied to detect the long term trend,and Rotated Empirical Orthogonal Functions analysis is used to get six main spatial modes of normalized precipitation over Northwest China.
The temporal and spatial characteristics of cloud water resources over Northwestern China havebeenanalyzedusing theISCCP(International Satellite Cloud Climatology Project)monthly mean D2 datafrom July 1983 to December 1998.The Northwestern China has been divided into three climatical regionsin this study.
This paper analyzes basic intendment of the social sustainable development and sustainable utilization of the water resources, puts forward the existence problems of development and utilization of water resources, and poses the gists of sustainable management of the water resources in northwest of China.
By taking one hydraulic underground excavation engineering project in the Northwest of China as an example,the surrounding rockmass stress field of underground excavation in the low ground stress regions is simulated with two-dimension elastico-plastic Finite Element Method(FEM).
Heihe river is a large continental river in the northwest of china, it' s middle-west system mainly involves Jia yuguan and Suzhou district in Gansu Province. The contradiction of supply and demand becomes more serious, the conversion between surface water and groundwater is complex, dissension of water is very frequent, which bring a series of questions of society and economy.
The project covered almost all the arid and semi-arid regions in Northwest region.
The Little Ice Age began in the early 15 the century and ended in 16 the century in the northwest region of China.
Abundances of macroinfaunal invertebrates in sand dollar (Dendraster excentricus) beds and in adjacent areas free of sand dollars were studied at 10 intertidal sites in the Pacific Northwest region of the USA and Canada.
First-degree trend surfaces revealed that the deeper tubular wells occur towards east/southeast and exploit Paleozoic sediments as well fractured/fissured diabases/basalts, whereas the tubular wells in the west/northwest region are shallower.
In the Pacific Northwest Region of the National Park Service, a resources management planning procedure has been implemented to provide definitive resource management for each park.
The northern forests of China are mainly included two northern forest regions in the Northeast and the Northwest of China.
Two NOAA-AVHRR five-band images, taken at Shapotou northwest of China when soil surface temperature approximated to the highest and lowest of the region, were applied in combination with the ground surface information measured synchronously.
Xinjiang, the largest province region in China, is located in the northwest of China.
A study on landscape mosaic structure in urban-rural area in Northwest of China with RS and GIS
Study of the intensity attenuation law in the East China Plain and the northwest of China