The Middle And Lower Of The Yellow River Reaches Area Vegetation Distribution And Change In The Zhou Till Qin Period

The main body of a book is the middle and lower reaches areavegetation carries out a first step in the Yellow River keeping a foothold in "The Bookof Songs", to Zhou till Qin period studying. Trying the deoxidation history period owesthe area vegetation status, fish for the relation looking for natural conditions and thehuman beings activity driving a factor two kinds scattering to the vegetation andchanging the effect bringing about as well as between degree the attach importance tothe human beings .activity and natural vegetation then problem. That human beingsexercise the effect to the vegetation is to allow of no doubt, the person is also to havethe aspect that protection promotes to not complete negative vegetation effect. The keyis what's the middle and lower reaches area vegetation condition at that time to Zhou tillQin depend on the Yellow River. Who occupies the more important affecting position,natural conditions or the human being activity? These, will expound one by one in themain body of a book.Mainly, three parts carry out the main body of a book mark studying:Partâ… is an introduction. Introduced the cause of selected topic, the boundary ofspace-time, studies method and studies significance. Fixed the main body of a book's,and specifically for its content studying, combing relevance discipline of the coursestudying and research result. At the same time, show article style or manner of writingorder, structure frame, bring forward purpose and have problem studying.Partâ…¡includes the second, three, four chapter, and the main body of a book. Firstly,for the style or manner of writing completeness, there are three periods in studying:"TheBook of Songs" respectively, the country wind period and Shang Yang "agriculture war"policy put last three periods in the Yellow River middle and lower reaches areavegetation condition distribution and change into practice.Second chapter main investigate and discuss the vegetation that "The Book ofSongs" produced in the Yellow River middle and lower reaches the earlier stage area.Deal with development of vegetation history as well as that Stone Age, the Xia andShang dynasty period owe the river basin vegetation condition, reflect the effect thathuman beings exercises to the vegetation is that gleam of form gives first place to.Third chapter is the full text priority; discuss groundless "The Book of Songs"fifteen countries vegetations condition mainly. Originally, the chapter arranges plantrelated to by every country wind, and divides fifteen countries wind into three big areas.Base on union analyzing the three areas, we have the vegetation of the three area,arranging the vegetation condition and natural factor of reaching different area,considering the human being activity according to area.Fourth chapter investigate and discuss the change of the Early Oin Dynasty vegetation after "agricultures war" policy implemented. Contrast to the naturalvegetation from the natural factor and human beings activates. Though the effect degreethat human being exercises to the vegetation strengthens, be to give first place to naturaleffect.Arrange the analytical queen but know, the middle and lower reaches areavegetation condition distribution and change from Zhou to Qin period are to exerciselower result of two kinds factor combined action, to give first place to the naturalconditions effect among them in the Yellow River. Flexible effect of human being is thatthe form soft and floury develops with the line.Partâ…¢includes the fourth, five chapter, is comprehensive analysis and conclusionpart. Among them, comprehensive analysis is that direction contrast natural conditions,elementary activity of human beings and policy implemented human beings intopractice consciously exercise the effect to the vegetation. The conclusion is final themain body of a book part, including now having conclusion and some difficult pointand being not enough for being follow-up, in order to studies in a deep going way.Thesis is a sample of the historyenvironment changes and reconstruction studies.Do some new investigation and discussion for the vegetation in the middle and lowerreaches the Yellow river from Zhou to Qin period is our purpose. After the analyze thewhole "The Book of Songs" ,the thesis required some conclusions:Firstly, the fifteen countries wind are plotted East,Middle and West area in thethesis. According to the plant's statistic, we know the arbor gives first place to themulberry; the herb is many by plant with Wormwood. The quantity of plants in east areais the least, less than middle and west area. The middle area's plants are between in eastand west. In the east and middle areas, herb more than arbor. The plant in west area isthe best. The quantity of plants is the most in the there areas and arbor more thanherb. In west, is the only one area that arbor more than herb.Secondly, the explanation of word "pinglin" and "zhonlin" in "The Book ofSongs" is almost same forest, just little different. The author think "pinglin" is a forest,which its crown canopy line is flat. Forest form is a single layer's. "zhonglin" is amingled forest. The key is a seeds of trees diversifies.Thirdly, contrast to the plant of fifteen countries wind, Qin dynasty's area isbelonging to west. After the" agricultures war"policy's implement, the vegetation of thisplace should have some changes. The author thinks, human beings activities not onlyeffect on forest, but also on glass. Qin area is the best example. The "agricultureg war"policy had effected glass more. So, focus on plain is necessary. We should not justnotice the forest changes. The vegetation changes include more aspects. At the sametime, human beings activities not only destroy and negative, they protect too.