spatial variability 中文意思是什麼

spatial variability 解釋
空間變異
  • spatial : adj. 1. 空間的；在空間中存在[發生，佔有位置]的。2. 佔大篇幅的。n. -ity 空間性。adv. -ly
  • variability : n. 易變，變化性；【生物學】變異性。
  1. Digital speech technology has been widely used in many fields of communications in recent years, but it is just at beginning to use acoustical wave to implement underwater digital speech communications, which mainly results from the bandwidth - limited underwater acoustic communications channel and its high temporal and spatial variability

    目前，數字語音技術已廣泛應用於許多通信領域，但是在水下利用聲波進行數字語音通信卻是剛剛起步的新技術，這主要是由於水聲通道有限的通信帶寬及其時變、空變等特性所決定的。
  2. Abstract : digital basinis made from digital elevation model considering spatial variability within a catchment. on the basis of digital basin, the digital approach to describing hydrological processes within a catchment is investigated. digital hydrological model is regarded as a modern physically - based modeling technique that includes a large amount of information. the case study on the shiguanhe catchment in the huaihe river basin, intensified observation field of gewex asian monsoon experiment project, has shown that the digital mode lperforms very well not only in simulating runoff processes at any specific site, but also in simulating spatial distribution and temporal variation of hydrological elements and state variable ( especially soil moisture ), if compared with traditional hydrological models. that provides solid foundation for full use of now available observation in formation and in - depth mining of hydrological data

    文摘:考慮流域下墊面空間變異性，基於數字高程模型構建了數字流域，並在此基礎上對描述流域水文物理過程的數字方法進行了探討.文章認為，數字水文模型是一種有物理基礎的包含大容量信息的現代模擬技術.史灌河流域實例研究表明，數字水文模型可以十分方便地輸出水文要素和狀態變量的空間分佈與時間序列，這對充分利用現有觀測信息進行水文信息的深層挖掘創造了條件
  3. Analysis of spatial variability of soil characteristics and crop yield under subsurface drainage

    暗管排水條件下土壤特性和作物產量的空間變異性分析
  4. The paper main contents including : ( 1 ) the paper analyzed spatial variability of hydrology geological parameters ; and studied on the tendency and regulation of annual water table resource in shandianhe river in inner mongolia ; and analyzed the general changing tendency of water table with time ; analyzed and illustrated the conditions of supply, penetration and drainage of ground water. ( 2 ) the paper analyzed the data of rainfall, evaporation, transpiration and runoff, assessed the surface water resources. ( 3 ) the paper used drainage method of ground water and finite element method assessed groundwater resources and forecasted the water table in the future six years

    內容包括: （ 1 ）分析了水文地質參數的空間變異性並分析研究了地下水的歷年動態變化趨勢和規律及其補給、徑流和排泄條件; （ 2 ）整理和分析了研究區的降水、蒸發和徑流資料，評價了地表水資源量; （ 3 ）採用總排泄法和有限元法對研究區地下水資源量進行了評價，並對未來6年地下水水位進行了預測。
  5. The hydrology system have some characters of complicated open macro system to a certain extent, the complexity and indeterminacy of the hydrology system becomes more and more standing out with the hydrology scale changing from the microscopical to the midscopical, even to the macroscopical, which present spatial variability, differ between the unit and the system, the model re - parameterization and the different scale model coupling

    水文系統在某種程度上具有開放的復雜巨系統的特徵，隨著水文尺度由微觀到中觀、宏觀，水文系統的復雜性和不確定性就愈突出，表現有空間變異性、單元與系統的不一致性、模型的再參數化及不同尺度模型耦合等問題。
  6. We first calculated the mean duration of drought and flood events, we found that the mean duration of drought and flood events has little spatial variability over the globe. the mean of the duration is about 1 - 1. 5 months, with a standard deviation of 0

    指出旱澇（大旱大澇）的持續時間具有很小的空間變化，大部分地區的旱澇的持續時間變化在1 - 1 . 5個月之間，具有0 . 5個月的方差。
  7. In order to derive this equation, one has to assume no spatial variability in k, f and n, to neglect the effect of capillary rise above the groundwater table, and to invoke the dupuit - forcheimer approximation, which states that the hydraulic head is independent of depth

    圖1潛水面的示意圖為了利用dupuit - forcheimer假設推導出以上的方程，必須假設k ， f以及n t在整個潛水面上的空間不變性，同時忽略潛水面上的水分的毛細運動
  8. The result shows that not only spatial precipitation heterogeneity and spatial land use / cover variability but also spatial soil evaporation heterogeneity influences flood simulation. as remarked above, spatial variability is very crucial to hydrological modeling

    計算結果表明不僅降水空間分佈、模型參數對水文過程模擬的精度有很大的影響，而且土壤蒸發空間不均勻性對模擬洪水也有一定的影響。
  9. On the platform of digital basin derived from raster dem data, - a grid - based hydrological model and a subcatchment - based hydrological model were used to study the effects of spatial variability on runoff process on such aspects as precipitation, model parameters and soil evaporation

    在構建的數字流域平臺基礎上，建立分別基於子流域離散和柵格離散的數字水文模型，從而分析研究降水、模型參數和土壤蒸發的空間不均勻性對模擬水文過程的影響。
  10. The parameter in the xin ' anjiang model, imp, was extracted directly from above land use / cover data. another parameter, sm, in each subcachment and in each raster grid was obtained from the relation between sm and the ratio of forest land area to subcatchment area. thus, a semi - distributed hydrological model and a distributed hydrological model were established to analyze the effect of some parameters in xin ' anjiang on runoff process according to the spatial variability of land surface characteristics

    將遙感技術獲取的土地利用和地表覆蓋一公里柵格信息與數字高程模型數據進行空間配準，然後通過構建林地面積比與新安江模型參數sm的關系間接確定各子流域及各柵格單元的的sm值，新安江模型參數imp由配準好的土地利用和地表覆蓋信息直接提取，由此建立方案與方案，來分析受下墊面覆蓋的空間不均勻性影響的模型部分參數是如何對模擬水文過程產生影響的。
  11. Spatial variability of heavy metals in soil of three - gorges reservior in chongqing

    重慶三峽庫區耕地土壤重金屬含量的空間變異性研究
  12. Study on spatial variability of soil nutrients in a vegetable production area

    菜田土壤養分空間變異特徵
  13. Study on the spatial variability of water nitrogen and phosphorus in the zhalong wetland

    營養物質空間異質性研究
  14. Spatial variability of water level in hetao irrigation district of inner mongolia and their estimations by the kriging

    河套灌區地下水位的空間變異性及其克里金估值
  15. To demonstrate the heterogeneity of hydrological flux and the significant influence on regional evaporation, firstly, it is proved theoretically that because of soil water content ' s horizontal spatial variability ( heterogeneous distribution ) an additional heterogeneous disturbance which is equivalent to mesoscale flux is induced

    首先從理論上推證出：由於土壤水分所存在的水平空間變率（非均勻分佈，對網格區平均通量而言，可引發附加的量級與中尺度通量相當的非均勻擾動項。
  16. It was found that the soil physical properties had significant spatial variability in the catchment scale because of the joint - influences of land use, topography, physiognomy, and other factors. the spatial variation is small for field capacity, moderate for wilting moisture and bulk density, and great for saturated soil moisture

    受地形地貌和土地利用等因素的綜合影響，土壤物理性質在流域尺度內存在顯著的空間變異，飽和含水量的空間變異性最大，土壤萎蔫濕度和土壤容重居中，田間持水量空間變異最小。
  17. Numerical experiment shows that this heterogeneous disturbance arising from soil water content ' s spatial variability cannot be neglected when regional mean evaporation fluxis estimated

    數值試驗表明，這種因空間變率而引發的非均勻擾動項在估計區域平均通量時具有不可忽視的影響。
  18. In this paper, starting with the physical mechanics of land surface hydrologic process and the introduction of the theory in probability statistic distribution, an analytical expression of heterogeneous evapotranspiration efficiency is given which takes heterogeneous soil water content ' s subgrid scale spatial variability into account, through which the parameterization scheme of subgrid scale soil surface ' s evapotranspiration efficiency ( which is generally called mosaic method ) is modified to a statistic - dynamic scheme in which a whole heterogeneity of the grid region is considered

    本文從陸面水文過程的物理機制出發，引進概率統計分佈理論，推導出一種由非均勻土壤含水量次網格尺度空間變率所形成的非均勻蒸發散率解析表達式，從而將通常的次網格尺度地表蒸散率的參數化方案（ mosaic方法） ，改進為考慮網格區整體非均勻性的統計-動力參數化方案。
  19. Spatial variability of soil moisture in the irrigation district is analyzed by integrating geostatistics and general theory of statistics

    將地統計學法和傳統統計學方法相結合，對灌區尺度的土壤水分空間變異性進行了研究。
  20. The main innovations and ameliorations are as follows : firstly, based upon the study on spatial variability of soil water, soil moisture monitoring method is brought forward

    論文的主要改進及創新： （ 1 ）研究了灌區土壤水分空間變異性，並以此為基礎提出了較為合理的灌區墑情監測方法。
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