Soil erosion and management on the Loess Plateau 作者： 作者单位： 刊名： 英文刊名： 年，卷(期)： 被引用次数： CAI Qiang-guo Institute of Geographic Sciences and Natural Resources Research‚ CAS‚ 地理学报(英文版) JOURNAL OF GEOGRAPHICAL SCIENCES 2001‚11(1) 6次 参考文献(23条) 1.Chen Yongzong;Jing Ke;Cai Qiangguo Modern Erosion and Management 1988 2.Lal R Soil erosion by wind and water: problems and proposals 1988 3.Shi Nianhai Loess Plateau and evolution of its agro-forest distribution area 1981 4.Zhu Kezhen Preliminary study of climate
Premium Erosion Soil
Ode to the West Wind is a poem addressed to the west wind. It is personified both as a "Destroyer" and a "Preserver". It is seen as a great power of nature that destroys in order to create‚ that kills the unhealthy and the decaying to make way for the new and the fresh. The personification of the west wind as an enchanter‚ as a wild spirit is characteristic of Shelley’s poetry. Shelley’s personification of the west wind can be called "myth poesies"‚ another kind of metaphor. The poem is divided
Premium The Raven Poetry Macbeth
HISTORY OF WEST AFRICA Overview The history of West Africa is the long history of human movements‚ incursions‚ displacements‚ intermixtures of peoples‚ and of the impact of these on the beliefs‚ attitudes‚ social and political organization to the peoples West Africa. The history of West Africa can be divided into three major periods: first‚ its prehistory‚ second‚ colonial period‚ in which Great Britain and France controlled nearly the whole of the region and the post-independence era‚ in
Premium Africa West Africa Sub-Saharan Africa
industry‚ Herb Kelleher had explored a niche‚ a strategic window of opportunity in the industry. Since Southwest is not try to match or even really hard to match its resources and competencies with other large major airlines such as US Air‚ America West and others‚ Herb decided to be a domestic dominant rather than fight to shares part of the international or long-distance market segment. In revealing to the niche marketing strategy‚ Southwest is targeting their customers who are short-distance frequent
Premium Airline Southwest Airlines Low-cost carrier
West Asia Syria and Lebanon As in other parts of Asia‚ there was an upsurge for freedom in West Asia also immediately after the Second World War. You have read in the previous chapter about the movement of the people of Syria against the French rule. After the war‚ the French tried to restore their authority over Syria and Lebanon but‚ in the face of opposition from the people of these countries and the world opinion‚ they were forced to withdraw. Both Syria and Lebanon became independent by the
Free Africa
Special article the economy of West Bengal Ratan Khasnabis Even after 30 years of Left Front rule in West Bengal‚ the state has lagged behind in a few economic indicators‚ this‚ despite better performance in agriculture. Agricultural growth rates have however declined in the last decade or so‚ the reasons for which have been elaborated upon. A gradual movement towards unorganised labour has characterised working patterns in the state and the phenomenon is studied‚ along with the conditions
Premium Economics States and territories of India Bengal
Although many consider the Old West violent and bad‚ it was actually a mix of the good‚ the bad‚ and the ugly. The Old West began in the 1860’s up until 1890. It was also called the Great Plains and stretched from west of the Mississippi River all the way to Rocky Mountains. Many Americans traveled out west in search of adventure and a fresh start. There were a variety of job opportunities available‚ such as becoming a farmer‚ miner‚ or railroad worker. In the Old West‚ violence was prevalent‚ but
Premium Native Americans in the United States Murder Homicide
The economy of West Germany was created by the merger of the individual zones of the French‚ British and Americans powers to create a united economic entity for West Germany in 1948. The Western powers were instrumental in rejuvenating the economy of the newly formed state. They instituted measures such as ending price controls and putting a new currency in place. This was done not only to create an ally and trade partner but also to impress upon West German leaders that the nation would be a part
Premium European Union European Coal and Steel Community World War II
Infectious Disease Case Study Assignment After reviewing this case study‚ address these questions: 1. West Nile fever is caused by the West Nile virus. Describe the emergence of novel disease in the Western hemisphere. Provide some examples of sources of infection for novel diseases‚ including the mode of transmission for WNV. Why is this a concern? In late August of 1999‚ an unusual cluster of encephalitis cases was reported to NYC’s Department of Health. Laboratory sequencing of virus isolated from brain tissue of birds
Premium Infection United States Microbiology
West Nile Virus Summertime‚ without doubt is the best season for students‚ the mood that it brings along with it‚ is the time that most people treasure. However‚ as we go along and having wonderful time in this period‚ it is very important that we remain healthy and safe. The season not only brings the things we obviously expect‚ but also has been associated with viruses which can cause various diseases. People who enjoy themselves along the lakes and rivers should keep in mind of the threatening
Premium Mosquito Microbiology