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drainage area 排水面積[區域];流域。

drainage basin

Some particular measures to be taken are as the followings : ( 1 ) to establish a uniform harmony mechanism in the river basin in order to have a general plan for wetland protection and utilization ; ( 2 ) to combine the existing protection districts according to lake drainage area and species distribution , and to construct new wetland protection region in order to solve problems in management districts ; ( 3 ) to develop wetland restoration and reconstruction ; ( 4 ) to carry out reforesting in formerly cultivated land and to construct shelter forest of the yangtze river in order to control soil erosion and to preserve the water resource ; ( 5 ) to protect and utilize reasonably the wetland resources in the middle and lower reaches of the yangtze river ; ( 6 ) to strengthen the research of wetland science 具體可采取以下措施:在流域內建立統一協調機制,對流域濕地進行保護與合理利用,合理布局,統一規劃;按湖泊流域和物種分布整合現有保護區,建立新的濕地保護區,解決目前管理上的制約問題;大力開展濕地修復重建;推進退耕還林、長江防護林等工程建設,發揮森林治理水土流失、涵養水源的作用;在保護的前提下科學合理地利用長江中下游濕地資源,開拓新的生產力;同時加強濕地科學研究。

In this thesis , the design and realization of a 3d gis platform - - sei3d are introduced , which are based on the research of dalian spatial data infrastructure construction . and for the project of “ 3d scene demo system of luan river drainage area “ , the data acquisition , organization and i / o of large - scale 3d scene visualization are mainly studied 本文以大連市空間數據基礎設施建設為背景,針對灤河中、下游流域三維場景演示系統中大規模三維場景可視化問題,重點從數據獲取、組織與調度三個方面研究相關理論和方法,設計并實現了一套三維地理信息系統平臺sei3d 。

The fluid - geological map was made by combination of the characteristics of metallogenic fluids and the metallogenic conditions in terms of structural , stratigraphic and magmatic constraints . it shows the nature and state of metallogenic fluids and the basic characteristics of the two metallogenic fluid systems . the range of drainage area and seven concentration centers ( zijinshan , zacun , shiyancun , bijiashan , shuixie , xinmin and yongcui ) of the two metallogenic fluid systems are delineated 本次研究得到的流體地質圖,基本反映了本區成礦流體的性質與狀態,反映了兩個成礦流體系統的基本特征,圈定了兩個成礦流體系統的流域范圍及7個成礦流體濃集中心(紫金山、扎村、石巖村、筆架山、水泄、新民、擁翠) ,這些濃集中心與已知礦化點分布、化探異常及有利的地質條件基本吻合,成為該區進一步找礦預測的重要依據之一。

By the study , it proved gis to be an indispensability means in the hydrological study . it will exert important function on reasonably using real time space distributing information of hydrology and weather obtained by remote sensing technology , conveniently and rapidly updating hydrological subject database , setting up distributing course model that can reflect hydrologic phenomena and discipline , realizing hydrologic forecast real time , linking up the drainage area model , ground water model and surface water model and then establishing the gis of hydrology theme 利用gis技術進行水文模擬,仍有許多難題需逐步解決,模擬精度也有待提高,但是地理信息系統在水文研究中的作用卻顯得日益突出,它將在合理利用水文遙感技術獲得的水文、氣象等實時空間分布信息,方便快速地更新水文專題數據庫,建立反映水文現象客觀規律的分布過程模型庫,實現實時水文預報,實現流域地面模型、地下水模型和地表水模型的定位銜接及最終建立水文專題地理信息系統等方面發揮重大作用。

In 2004 , the drainage services department ( dsd ) has authorised a total of 240 grass cutting projects of which 22 grass cutting projects are conducted in tai po district . moreover , the dsd has also sprayed larvicidal oil in stagnant waters along the rivers and drainage areas to control mosquito breeding 渠務署在新界北自從2004年年初共簽發了240個剪草項目,在大埔區該署在2004年共簽發了22個剪草項目,渠務署亦有在一些靠近鄉郊地區的河流及排洪渠有積水地方噴灑蚊油。

Based on grasping the connotation of sustainable development , the author constructs the two dimensions model to evaluate the conditions of region sustainable development with fractal theory according to its structure of two dimensions of development level and sustainability . the model corresponds the statistical indexes of region sustainable development systeiri to dots on the coordinate of multi - dimension space and takes the fractal dimensions as the parameters of conditions of region sustainable development according to the spatial distribution characteristics of the dots . the author takes nine provinces ( or regions ) of yellow river drainage area as objects to perform applied study and shows the result by gis and vector , this indicates that the model is feasible 基于此,在把握可持續發展內涵的基礎上,從發展水平和可持續性的二維結構出發,利用分形理論構建了區域可持續發展評價的二維模型,把區域可持續發展系統的統計指標和多維空間中的坐標上的點對應起來,考察其空間分布的特點,利用分形維數來表示區域可持續發展的狀況,并以黃河流域九省區為例進行了應用評價研究,并用gis技術和向量直觀的表現了出來結果表明了它的可行性。

A total of five populations of dysosma versipellis were sampled from mt . emei in sichuan province ( sc ) , mt . shengnongjia hubei in province ( hb ) , mt . tianping in hunan province ( hn ) , pengze in jiangxi province ( jx ) , mt . tiantangzhai in anhui pprovince ( ah ) , and a population of dysosma pleiantha from mt . tianmu in the rangzi river drainage area of zhejiang province ( zj ) 本文在對瀕危植物八角蓮資源廣泛調查的基礎上,有代表性地選取長江中下游四川峨眉山( sc ) 、湖北神農架( hb ) 、湖南天平山( hn ) 、江西彭澤縣( jx ) 、安徽天堂寨( ah ) 5個種群和浙江天目山( zj )六角蓮一個種群。

It is necessary to grasp the opportunity of the middle route project of south to north water transfer , and to renovate the idea and study the program , and to pay attention to the eco - environment protection and project construction , as well as to establish corresponding police and law and the drainage area management department , to guarantee the sustainable development in the middle and lower reaches of hanjiang river 要解決好流域經濟發展問題,必須把握好建設南水北調中線工程的機遇,更新觀念,加強前期研究和規劃,注重生態環境的保護和示范工程的建設,建立相應的政策法規和流域管理體制,全面保證漢江中下游地區的可持續發展。

It ' s very urgently to establish the water quality management decision support system of the dongjiang drainage area . the author tries to establish the dongjiang river forecast and evaluation model to give the reference for decision support system of other area 本文試圖建立東江水質預測和評估模型,實施該流域水質管理決策支持系統,從而提高該流域水質管理與決策的水平,更好地保護和利用東江水資源,為其他地區的水質管理支持系統的開發與應用提供有益的參考。

The newest countercheck result of waterpower indicates that there are 1918 river with the drainage area of over 50 km2 in the whole province whose theoretical storage of waterpower resource is 864 . 2 * 104kw , ranking the first among the northeast area , accounting for about 50 % of that of the northeast area 最新水能資源復查成果表明:全省流域面積50km ~ 2以上河流1918條,水能資源理論蘊藏總量為864 . 2 10 ~ 4kw ,居東北地區之首,約占東北地區的50左右。

The entry section of huning highway crosses the district , in correspondence with hujialiu highway in south - north direction ; the 204 . 312 national highway , started from putuo district , reaches the changjiang drainage area , north - east and north - west areas ; the suzhou river within the district runs for 14 kilometers 滬寧高速公路入城段橫貫區內,滬嘉瀏高速公路與之南北呼應, 204 . 312國道從普陀區起始可達長江流域和東北、西北地區,蘇州河流經14公里。

It can forecast flood real - timely and a course of any prospective flood . simulation model of runoff regards a drainage area as a system , simulating how one rainfall comes into being runoff in a basin . the import of system is rainfall , and the export is runoff 本文洪水預報采用產匯流模擬模型可以模擬任一時刻任一斷面的徑流量,對洪水進行實時預報,系統的輸入是降水量,輸出為流域出口的流量過程。

Investigating the relationship between shenzhen ethnic groups is significant to interpreting the relationship between ethnic groups in zhujiang drainage area . further more , it can be a reference to other regions of china 研究深圳的民族關系,不僅對沿海經濟發達區域,特別是珠江三角洲地區雜散居民族關系的探究有特殊的意義,而且對我國其他地區經濟發展迅速的城市來說也具有借鑒意義。

With the same slope gradient and slope length , the soil erosion on the dyke slope caused by the runoff mainly depended on the factors such as the runoff , flow velocity , rainfall intensity , rainfall duration , as well as the up - slope drainage area of dyke slope 坡度、坡長一定時,徑流對戧坡的侵蝕主要與徑流量、流速、雨強、降雨歷時,戧坡以上匯聚水量或集水面積有關。

The statistics show that the correlation of antecedent precipitation , lithology , landform , drainage density , drainage area , length and ratio of demotion of main river and four characteristics of low flow is very complex 統計結果表明:流域的枯季前期降水、巖性、地貌、流域面積、河網密度、主河道長度及其比降等因子與喀斯特流域的枯水四特征的相關關系異常復雜。

In this recent year , with the rapid development of the social economy along the dongjiang drainage area , the contamination drain into the dongjiang river is increasing rapidly year after year 近年來,隨著東江流域社會經濟的迅速發展,排入東江的污染物逐年增加,建立東江水質管理決策支持系統是實現該地區經濟建設與環境保護協調發展的迫切需要。

With the construction of the pudong borough in shanghai , its economic development will bring important influence on the whole drainage area of the yangtze , even on the whole country 隨著上海浦東開發區的建設,本區的經濟發展將對整個長江流域乃至全國產生重要的影響,但目前卻面臨著環境發展滯后甚至遭到嚴重破壞的問題。

The author takes nine provinces of yellow river drainage area as objects to perform the study and shows the result by gis and vector , which indicated the feasibility of the model 以黃河流域九省區為例進行了應用評價研究,并通過gis技術和空間向量將結果直觀的表現出來,結果表明了模型的可行性。

Presently , the licensing of water rights in many drainage areas of this nation “ s cross - regional water conduits is still operated under some loosely defined rules 跨流域調水:水權交易的法律調整目前,在我國跨流域調水工程中進行水權交易尚處于探索階段,沒有一個相對成熟的交易制度。