arid index 中文意思是什麼
arid index
解釋
乾燥指數-
The dissertatio n constructs the index system, introduces the coefficients of development, coordination, fairness, and the coefficient of sd, which is composed by the former three and can reflects the sd overall strength of watershed, brings forward the quantative criteria of in order that the research of wrcc is based on the good watershed ecology and environment, the dissertation, according to the ecological appropriate theory, builds the logarithm normal distribution model about the relation between the growth of natural vegetation and the depth of groundwater ; based on this relation model, proposes a quantitative method of ecological water requirement ( ewr ) of natural vegetation in arid area, which utilizes the results of rs technique and the spot testing data of vegetative physiology demand
針對流域特點建立了基於水資源的流域可持續發展評價指標體系，引入發展系數、協調系數、公平系數，以及由其構成的衡量水資源支撐社會可持續發展綜合水平與能力的可持續發展系數，提出了可持續發展的定量判別方法。為保證在良好生態的前提下進行水資源承載能力研究，論文根據生態適宜性理論，建立了乾旱區典型天然植物生長與主要環境因子的偏態單峰對數正態分佈模型。基於此關系模型，利用遙感技術成果以及植物生理需水的現場實驗數據，提出了乾旱區天然植被生態需水量計算方法。 -
Gini coefficient arid theil index are both guidelines to weigh imparity, their factor analysis are the better method to clarify income disparity
摘要基尼系數和泰爾熵指標都是衡量不平等性的重要指標，特別是它們的分解能進一步對不平等性進行因素分析。 -
Firstly, the status of our nation ' s water resources, flood and arid hazards is overviewed to illustrate the necessity for study on dynamic control of flood season limited water level. disadvantages in traditional limitsd water level design, static control of limited water level design, static control of limited water level and fuzzy limited water level curve are pointed out, and mending methods for these are introduced. dynamic control and its key problems are analyzed hi next section. the allowable range of limited water level is determined, so as the allowable extreme risk index. the definition of extreme risk is re - illustrated, risk analysis methods in reservoir operation is discussed either. according to the definition of extreme risk rate, the allowable extreme risk rate of reservoir is systematically demonstrated with variant extreme risk indexes and flood season limited water level
本文首先闡述了我國水資源狀況和水旱災害、說明水庫汛期限制水位動態控制研究的必要性；介紹了傳統汛限水位設計、汛限水位靜態控制、模糊汛限水位過程線存在的問題及其初步改進方法；分析汛期限制水位動態控制的方法及關鍵問題；進一步闡述了水庫極限風險率的定義；根據極限風險率定義，詳細敘述了不同極限風險指標時、不同汛期限制水位下起調，水庫所能承受的極限風險率計算方法。然後，基於極限風險率計算方法，以白石水庫為背景，研究「考慮壩體自身安全、考慮壩體安全與下游防護對象控制下泄流量的汛限水位動態控制的極限風險率」 。 -
Study on the eco - environment index of groundwater in inland arid and semi - arid basins
內陸乾旱半乾旱盆地地下水生態環境指標研究 -
Clay minerals are of illite, chlorite, kaolinite and smectite assemlblage. the content of illite is very high and its crystallinity index is high too, which indicate the cool and arid climate condition in the time of sediment conformation
粘土礦物組合為伊利石、綠泥石、高嶺石和蒙皂石，伊利石含量占絕對優勢，其結晶度指數（ hw ）較高，反映東海南部外陸架粘土形成於寒冷乾燥的氣候環境。 -
After the 1990 ' s, dryness index increase especially in east of shandong peninsula and north of yellow river ; east of shandong peninsula, most of south - east shandong and south shandong are from humid to semi - humid, the areas to the north of yellow river is from semi - humid to semi - arid than that of the year from 1961 to 1976
進人90年代以後，與1961 - 1976年相比，乾燥度指數普遍增大，半島東部及黃河以北地區乾燥程度增大得最為明顯，半島東部、魯東南及魯南的大部分地區由濕潤區演變成了半濕潤區，而黃河以北絕大部分地區及魯中北部、半島西北部的局部地區則由半濕潤區演變成了半乾旱地區。 -
There is a strong relationship between the vegetation cover and stability of oasis ecosystem which is the key location of mankind production and existence in arid and semi - arid land. the change of vegetation cover in arid and semi - arid has very important influence on the oasis eco - system, as it is very sensitive to the environment changes to oasis direction or to desert direction that the fluctuating index of vegetation cover. the vegetation cover rate change great effect on realizing the characteristic
植被覆蓋度對于乾旱區人類生存和生產核心場所的綠洲穩定有著直接的關系，在乾旱區覆蓋度的變化對本已脆弱的綠洲生態系統有著重要的影響，是向綠洲化還是向荒漠化的方向發展，十分敏感於綠洲植被覆蓋度的指數，了解各類植被覆蓋度的特徵及演化規律，對認識乾旱區生態環境的現狀及發展趨勢，辨識引起環境變化的驅動力，有著重要的意義。 -
In terms of the characters of urban rail network planning, based on analyzing the applicability of the evaluation methods in existence, an evaluation method arid an index system are emphasized in the thesis
摘要針對軌道線網規劃評價的特點，在對已有的現有評價方法適用性分析基礎上，提出了一種組合的綜合評價方法及指標體系。 -
In this article, choose the fvc index for originals data which has great sensitivity to vegetation cover rate in arid lands as an environmental indicator ; 2
本文通過對比，選擇了在乾旱區對植被覆蓋度上有較好敏感性fvc指數作為本次研究的原始數據； 2
分享友人