Oil Resources of North China.

political economy of china in central asia

this research is about the political economy of china in central asia. in this research the political & economic interactions affected on chinas political economy in central asia are examined. chinas goal of presence in central asia including political-security, economic and energy goals is described in one part. in another part, the trade relations between china and central asian countries ar...

An optimization model of groundwater resources allocation for agriculture in well irrigation district of North China

Due to excessive exploitation of groundwater resources to meet crop irrigation requirement, shallow groundwater table is falling at the rate of about 1m/y for the last 20 years in North China plain, which has caused many ecological and environmental problems. A kind of non-linear multi-year optimization model of groundwater resources allocation (MOGA) has been developed to decrease groundwater ...

Fishery Resources of the North Atlantic

Impact of spatial-temporal variations of climatic variables on summer maize yield in North China Plain

Summer maize (Zea mays L.) is one of the dominant crops in the North China Plain (NCP). Its growth is greatly influenced by the spatial-temporal variation of climatic variables, especially solar radiation, temperature and rainfall. The WOFOST (version 7.1) model was applied to evaluate the impact of climatic variability on summer maize yields using historical meteorological data from 1961 to 20...

north sea petroleum resources

petroleum exploration in north sea during the last decade has become of great importance. an attempt is made to discribe the geological characteristics of this region. informations are given about petroleum and gas reserves of this area until mid 1976. finally a comparision is made between these reserves and those situated in other parts of the world such as the united states , soviet :union:, ...