In our country , especially the northern area of the country , the situation of water resource shortage is very severe that has already formed a big threat for the social and economic development 我国特别是北方地区水资源短缺的形式十分严峻,对社会经济的发展构成极大的威胁。与此同时,水资源的短缺与水资源污染和浪费并存。
Nowadays , it is surely of great importance to take advantage of all the superiorities and potentialities belonging to tianjin for the purpose of spurring on the northern area to improve its market system healthily and rapidly 真正充分发挥港口城市天津所固有的巨大经济优势和潜力，有利于今天北方市场经济的全面、健康、快速发展。
In beier depression , high pressure reached to 5mpa , and in different area the high pressure appear in different stratum ; on plane , the high pressure in the southern area of wuerxun was higher than that of in the northern area 贝尔凹陷，最大异常幅度为5mpa ，且其在不同地区出现的层位不同；横向上，乌尔逊凹陷南部异常压力大于乌尔逊凹陷北部。
According to the practical running management of shenyang northern sewage treatment plant within 5 years , this paper expounds the problems that should be noticed in running in winter of urban sewage treatment plants in northern area in china 摘要以沈阳市北部污水处理厂5年的实际运行管理为例，阐述北方地区城市污水处理厂冬季运行时应注意的问题及对策。
Jasmine tea of xianzhu brand were received well in shanxi , inner mongolia , shandong , haerbin and other northern areas . organic tea of jianpo brand been salable in hangzhou , beijing , shanghai , which win the deep favor of the consumers “仙珠”牌花茶绿茶在山西内蒙山东哈尔滨等地区销售受到一致好评“健魄”有机茶在杭州北京上海等地区受到广大消费者的青睐。
Finally , this paper makes an appraise and policy recommendations to the great projects such as shift grain for forest and green project , shelter forest of three northern areas of china project , and beijing , tianjin sand source cure project , etc 最后本文对我国退化土地治理比较大的工程项目：退耕还林还草工程、三北防护林工程、和京、津风沙源治理工程等作出评价和政策建议。
The authors said that taking more vitamin d could be especially important for people living in northern areas , which receive less vitamin d from sunshine . african americans , who do n ' t produce as much of the vitamin because of their skin pigment , could also benefit significantly from a higher intake , the authors said 研究人员还表示，摄入更多的维生素d对于那些生活在美国北部地区的人们来说，显得尤其重要，因为那里的人们因日晒少而获取的维生素d量都比较少。
The following are main conclusion and recognition : firstly , basing on the study mudstone compaction , drawing a conclusion is that the profile and plane feature of palaeo - pressure in y3 , on profile , the pressure ranged from 5mpa to 10mpa in the southern area of wuerxun . usually , high pressure was in n1 or t . in the northern area of wuerxun , high pressure almost reached to 5mpa , high pressure usually was in d1 or n2 在海拉尔盆地研究中，以此为切入点，通过大量实际工作，取得了如下初步的研究结论和认识：首先，通过压实研究，得出了地层在最大埋深状态下(伊敏组末) ，古压力的纵横向分布特征：纵向上，乌尔逊凹陷南部异常压力幅度在5 10mpa之间，最大异常压力一般出现在南屯组一段或铜钵庙组。
( 4 ) the formation and growth of structural traps and stratigraphic - unconformity traps in the area is controlled by three compressive stages of silurian - devonian , late permian - tertiary and oligocene - quaternary ; non - structural and compound traps mainly grew in the early paleozoic . structural traps mostly grew in the late paleozoic and the cenozoic and mostly grew on the north and south belts ; non - structural traps mostly grew in the northern area of the hetian concave . most traps in the area formed or typed at last in the himalayan episode , dispersed on the north and south belts ( 4 )研究区构造与地层不整合圈闭的形成和发育受志留-泥盆纪、晚二叠世-第三纪、渐新世-第四纪三个挤压阶段的控制；早古生代主要发育非构造圈闭和复合圈闭，晚古生代和新生代则主要发育构造圈闭：构造圈闭主要发育在南北两带上，其次为中带；非构造圈闭主要发育在和田凹陷以北的地区；研究区内大多数圈闭是喜山期形成或最终定型的，在南北两带都有分布，而海西期圈闭主要分布于研究区中带玛南构造带处。
Forest , remained to play a major role in their daily life , including in their thinking and culture , which is also typical in the northern area where people lived on forestry . from the perspective of cultural anthropology , the historical evolution of this ewenki group and cultural mode illustrate basic fact in the northern minority area . therefore , there is extensive academic values in studying this ewenki group , in terms of cultural anthropology , sociology , history 由于驯鹿鄂温克人世代追随野生驯鹿生活在茂密的古老山林中，从未离开过山林，与外界很少接触，因而较完整地保存着极其古老的生产方式和生活内容，充分地展示着北方山林民族古朴、纯真、与自然合为一体的思维规则和文化内涵，富有一定的代表性，是从事北方诸民族社会、历史、文化发展演变研究的不可缺少的内容之一。
