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Study On The Spatial And Temporal Evolution Of The Eastern Salt Lake In The East

Posted on:2012-06-06Degree:DoctorType:Dissertation
Country:ChinaCandidate:C M WangFull Text:PDF
GTID:1100330434973422Subject:History of physical geography
Abstract/Summary:PDF Full Text Request
The dominant feature of historical geographic view which domestrates the regional environmental change, is to recover and explain the temporal invovmental process of the geographic element in the geographic environment and show the key dirving force. But Logical premise defects exist, they try to explain why human beings try their best to constuct the giant dam surrounding the salt lake, not check the Tang and Song dynasty hisorical document,they explain the geographical situation is the fundmental reason. Salt lake is in a constuct rift basin. The geographic feature is convergence.This departure from the environment, but also due to the cycle of the environment,can not explain the reason exactly. They don not care about the relationship which human beings and environment.The article choose the plot of drying salt pond salt production system is the key point of the environmental change. The process of shaping the space environment and the gradual process shaped by the environment caused by the cumulative negative effect of the demise of lake water. Production systems based on inorganic salt-salt production business kinds of irrigation,energy input is solar energy, wind energy and other natural energy, interwoven into the top of Border Health is a human production technology and labor organization Forms. Salt Lake table object is a production of brine.The system itself has a stable structure and specific functions, also by the interaction with the environment to achieve coordination.When the system because of changes in stretch of the end of a full range of material, after adjustment requirements of the new system, the stability of the transformation of the human environment, to strengthen some of the adverse geographical factors of production. Salt Lake is mainly imported runoff shielding. Transformation of this environment, short time to facilitate the function of the salt production system to play; From a long time perspective, the negative effects of environmental reform,eventually led to the dry salt lake.This article consists of five chapters.The first chapter deals with the recoverary of landscape based on<Shuijingzhu> and other related historical materials, prior to development east of Salt Lake is not the geographic phenomenon reached its full recovery. Basin runoff by many as import, extended lake shoreline, the depth increases. Stretch of reclaimed land does not colonize space, the so-called astrachanite board and soil nitrate plot did not occur. Sediment deals with the plot of the Ming Dynasties in the shape of soil, protection system..management system and described the spatial distribution. Land plot is the first choice Hedong Salt Lake ancestors form of land management. The advantage is without geographic restriction, the level can be distributed up and down, but need to periodically replace the subsoil. Determined by the characteristics of soil plot of human production technology is a single stretch of the main steam drying, the researchers did not develop later that the multi-segment stretch of water drying method. Corresponding protection system is the thorns, the thorns is the anti-theft featureThe black nuddle of the appearance time of nitrate plates were dating, and the associated recovery of irrigation management, technologies, spatial distribution. And so on. astrachanite board panels plot are scarce resources in the east salt pond to its extensive treatment to get rid of the early development, but more precise, sophisticated technology system at the same time, more reliance on the environment.Appropriate protective system is the strict water protectionThe spring of the shape transformation of irrigation, surface runoff has combed the transformation, and that the rise of large-scale water protection plate solar salt and nitrate in the time interval with the rise of goodness of fit salt lake.the transformation of the surrounding environment to bring the warning sings of Salt Lake’s own demise-the ancient sedimentary sequence observed is illustrated in the description. Salt production systems and the Salt Lake and the surrounding environment, the interaction between the common, human directional positive effect of expanding the system to bring the negative effects of environmental reform. Constantly under the influence of the cumulative negative effect, Salt Lake death.Production system of salt plays a key role in the Salt Lake Salt environmental changes and the shaping process.
Keywords/Search Tags:Plot of land, astrachanite board panels plot, Land plot, environmentchange
PDF Full Text Request
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