植被參數 的英文怎麼說

中文拼音 [zhíbèishēnshǔ]
植被參數 英文
vegetation parameter
  • 植 : Ⅰ動詞1. （栽種） plant; grow; cultivate 2. （樹立） establish; set up Ⅱ名詞（姓氏） a surname
  • 被 : Ⅰ名詞1 （被子） quilt 2 （姓氏） a surname Ⅱ動詞[書面語]1 （復蓋） cover; spread 2 （遭受） suffe...
  • 參 : 參構詞成分。
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 植被 : vegetation; vegetative cover植被層 vegetable layer; 植被帶 [植物學] zone of vegetation; 植被類型 vegetation form
  1. And understanding and studying the spectral features and variation rules of geo - targets in the experimental area, raising that it is the basis of geo - targets information collection with imaging spectrometer data to understand spectral features and variation rules of geo - targets, realizing that in a great extent spectral - integrated - form - based classification method can remove the phenomenon of " different spectrum with same objects " resulted from reflection ratio curve translation because of the angle change among sensor, targets and observation direction, and the average and variance images can be introduced to solve the problem of two kinds of geo - target with similar spectral forms and much different values of whole reflection ratio. it is suggested that " red edge " range bands of vegetation, which has close relationship with vegetation cover and biomass, is the main characteristic bands and important basis for careful vegetation classification and quantitative retrieval, and pixel - based derivative spectral analysis is very useful for removing the effects of soil background values and quantitatively retrieving vegetation biomass and cover. the remote sense quantitative retrieval model is developed for main appraisable factors of desertification monitoring assessment with imaging spectrometer data and then the applicability of model is analyzed

    研究結果如下：首先針對荒漠化地區的地物特徵，對高光譜數據不同波段的數據質量、波段組合進行了評價，提出了適用於荒漠化監測的基本波段選擇集；初步了解和掌握了研究地區的地物光譜特性及變異規律，進一步明確了掌握地物光譜特徵和變異規律是用成像光譜儀數據提取地物信息的基礎；發現了基於光譜整體形狀的分類方法在很大程度上能夠消除由於傳感器、地物目標觀測方向之間的角度變化引起的反射率曲線整體平移的「同物異譜」現象，對于譜形相似而整體反射率的值相差較大的兩類地物，通過引入均值和方差圖像參與分類得到解決；研究還表明在植被「紅邊」范圍內的波段是進行荒漠化監測的主要特徵波段，這些波段與植被生物量和蓋度都有密切的關系，是開展精細植被分類研究和植被定量反演的重要基礎；像元的導數光譜分析可以消除土壤背景的影響，是進行植被生物量和蓋度定量反演的有力工具；建立了荒漠化監測主要評價因子的定量反演模型，並分析了模型的適用性。
  2. Based on the theory of retrieving lst through satellite remote - sensing and the characters of semi - tropical climate, topography, vegetation and the noaa / avhrr data in guangxi, the split - window algorithms for retrieving the lst from space, including the kerr algorithm, the becker & li algorithm, the qin algorithm, the franca & cracknell algorithm and some others, were analyzed and compared

    根據利用衛星遙感資料反演lst的理論方法，結合廣西現有的衛星資料及亞熱帶氣候、地貌、植被等特點，對國內外的kerretal演算法、 becker & li演算法、 qinetal演算法和franca & cracknell演算法等10多種反演lst的分裂窗演算法及其相關的參數估算方法進行了適用性分析，得出採用輻射率模型中的beckerandli演算法計算廣西白天的lst比較適用。
  3. The evapration of water area is calculated by et0 multiplied by kc ; and then the evapotranspiration estimation models for other categories ( singular underling surface ) are presented ; based on bare soil and dense grass models the evapotranspiration estimation models for partly grass covered surface is presented combined with vegetation fraction data. it is feasible and logical each categories using singular way and mean, the result of regional evapotranspiration over south ningxia is given

    將水體單獨處理，由參考作物蒸散乘以比例系數直接計算得出水體蒸發；建立了4種單一類型下墊面（裸地區、草地完全覆蓋區、喬木林區、灌叢區）蒸散計算模型；對混合下墊面（草地?裸地區）區域蒸發（散）計算方法使用裸土和草地完全覆蓋蒸發（散）計算模型，然後結合植被覆蓋度給出。
  4. For parameter a, there is a close relationship exist between a ( 9, sr ) in two different radar incident angle that can be expressed as : with considering the effects of soil texture, we get the final expression of the inversion model : where mv ( t1 ), mv ( t2 ) is volumetric soil moisture content in two different temp, c, d is soil type related parameters, and v ( t1 ), s ( t2 ) is coresponding bare soil radar backscattering coefficients. inversion results show that for the c band hh polarized radarsat scansar data with a range of incidence angle from 20 to 40, the soil moisture change value can be derived with an acceptable accuracy using the above model. the temporal and spatial soil moisture change patterns are associated with rainfall and vegetation cover, as well as the soil hydraulic characteristics

    利用最新發展的電磁波散射模型研究了不同植被覆蓋地表雷達波對地表土壤水分的敏感性，建立了半經驗植被雷達後向散射模型; 2 ） .研究發現在農作物等矮小植被覆蓋地表，植被層直接後向散射與植被類型相關，且在植被生長期，雷達後向散射系數對植被含水量的敏感性要高於對植被高度變化的敏感性; 3 ） .解決了單參數雷達地表土壤水分反演問題中，雷達入射角和地表粗糙度的影響這一難點問題; 4 ） .利用土壤介電模型校正了不同土壤類型對反演地表土壤體積含水量的影響; 5 ） .在以上成果基礎上，建立了完整的單參數雷達地表土壤水分變化探測反演演算法，經地表驗證，模型反演地表土壤水分變化值的精度為rmse = 0
  5. It has been proved by theories studies and simulation experiments that polarimetric sar interferometry makes it possible to improve the measurement precision of the under - vegetation terrain and to estimate the height of vegetation targets, and that the performance of the new improved algorithm is better than that of the conventional algorithm

    通過理論研究和模擬實驗可見，應用極化sar干涉技術測量地形參數能提高測量的精度，並為測量植被覆蓋下的地表地形和估計植被高度提供了可能。本文提出的改進演算法比原有的演算法具有更高的測量精度。
  6. The fraction of green vegetation, the ratio of vegetation occupying a unit area, is a very important parameter in development of climatic and ecological models

    作為重要的生態氣候參數，植被覆蓋率是許多全球及區域變化監測模型中所需的重要信息。
  7. The comparison of stomatal parameters in leaf cuticles between two fossil angiosperms from the pliocene in west yunnan and their nearest living equivalent species indicates a little higher atmospheric co2 level at that time than the present, while carbon isotopic composition of fossil cuticles demonstrates much higher carbon isotopic discrimination and slight lower water use efficiency, showing a warmer and wetter climate than today

    摘要對滇西騰沖新近紀兩種被子植物葉片及其現存對應種的氣孔參數和碳同位素組成的綜合分析表明：當時的大氣co2濃度略高於現在水平；化石種的碳同位素分餾值高於現存對應種，但水分利用效率低於現存對應種；這證明當時的氣候條件比當前更為溫暖濕潤。
  8. A simulated annealing algorithm for retrieval of vegetation parameter from optical remote sensing data

    基於模擬退火演算法的植被參數遙感反演
  9. Polinsar has been used to invert vegetation parameters of terrain surface, especially for height of forest

    Polinsar可用於反演地表植被參數，特別是森林的高度參數。
  10. Terrain surface vegetation parameters inversion using polinsar data based on genetic algorithm ( ga ) is discussed in detail in this dissertation

    論文主要研究了基於遺傳演算法的polinsar圖像地表植被參數反演演算法。
  11. These parameters are the bases of terrain classification and target detection and recognition. therefore, terrain surface vegetation parameters inversion using polinsar data has been hot research topics in polarimetric interferometry in recent years

    地表參數的提取為地表分類及進一步目標識別奠定了基礎，因此用極化干涉雷達數據提取地表植被參數是當前極化干涉研究的熱點問題。
  12. The neogene is a key stage of terrestrial environmental evolution in yunnan. three stratigraphic sections including luhe ( late miocene ), yangyi and longling ( late pliocene ) were selected to reconstruct vertical landscape of paleovegetation in these areas, based on palynological data. according to principle of the coexistence approach, seven quantitative paleoclimatic parameters of each deposit area were obtained by using meteorological data ( 1951 - 1980 ) of the distribution area of extant taxa found each palynoflora in china

    晚第三紀是雲南地區環境演變過程中的關鍵地質歷史時段，本論文以晚第三紀晚中新世（呂合） 、晚上新世（羊邑和龍陵）地層中的孢粉為研究對象，結合同層位大化石植物證據，參照現代植被，恢復了雲南三個化石出產地區的古植被垂直分佈景觀，並定性地描述了古氣候；同時運用共存分析方法（ theco - existenceapproach ）定量化地重建了三個地區的古氣候參數值；初步推測了沉積地可能的古海拔。
  13. In short, through retrieving the parameter such as surface albedo, surface temperature and surface emissivity, all the energy flux such as net radiance flux, soil heat flux and latent heat flux can be computed in sequence further, then latent heat flux which provide energy for et can be computed based on energy balance equation, finally instantaneous et and daily et can be obtained

    總之，根據地表能量平衡方程，通過計算對地表反照率、地表溫度、地表比輻射系數、歸一化植被指數等參數進行反演，進一步計算出了地表凈輻射通量，土壤熱通量和潛熱通量，最後獲得了遙感影像成像時的瞬時蒸散及當天的總蒸散量。
  14. Satellite laser altimeter return waveform is sensitive to the vertical canopy structure and the change of underlying ground elevation. it is optimal for mapping forest structure. the return waveform and the processing method are described. the relationship between laser waveform and canopy structure parameters is explored ignoring the clumping effects. the clumping caused that structure parameters are different from the actual value. to solve this question, a model by 3 - d canopy structure parameters is needed

    星載激光測高儀的回波信號能夠靈敏反映地面植被組成和地表高度的變化，因此能夠用於探測森林地貌;首先對星載激光測高儀的森林回波信號及其處理方法進行了介紹，探討了在不考慮植被聚集情況下，植被組成與回波信號之間的關系;由於植被的聚集效應，例如樹葉群集成樹冠，會導致植被組成參數與真實值之間存在差異，這需要建立關於三維的空間分佈模型加以解決。
  15. One avhrr image of the yangtze delta at 13 : 00 on 15th apr., 2003 is used to retrieve the regional parameter such as surface albedo, ndv1, surface emissivity and surface temperature, which is based on regional trait of the yangtze delta to choose different model. all above will give a methodological support to gain the regional surface parameters, what ' s more, it will afford the parameter support to calculate the regional et too

    選取了2003年4月15日13時的avhrr影像，根據長江三角洲區域特點，選擇不同的反演模型，分別對長江三角洲區域地表反照率、歸一化植被指數、地表比輻射系數、地表溫度進行了反演，為區域地表參數的獲取提供了方法支持，也為長江三角洲的區域蒸散量求取提供了參數支持。
  16. Some variables regional distribution over south ningxia is given out in the course of evapotranspiration estimation : the regional distribution of surface characteristic parameters ( normalzed difference vegetation index, surface albedo, surface temperature ), radiation balance components ( surface absorbed shortwave radiation, surface longwave radiation, atmospheric counter radiation, net radiation ), surface heat and balance components ( soil heat flux, sensible heat flux, latent heat flux )

    估算區域蒸發（散）量的過程中，得到許多有意義的量：地表特徵參數（植被指數ndvi 、地表反射率、地表溫度） ；地表輻射平衡各量（地表短波吸收輻射、地表長波輻射、大氣逆輻射、地表凈輻射） ；地表熱量平衡各量（土壤熱通量、顯熱通量、潛熱通量） 。
  17. Taking erectophile type continuous vegetation as a example, authors had done many monte carlo simulations, and established empirical analytic expressions of radiances with component temperature, soil emissivity and leaf area index. empirical analytic expressions were used to construct objective function and genetic algorithm was employed to synchronously retrieve 5 parameters, such as component temperature, soil emissivity and lai, from thermal infrared 2 channels and 2 angles data. many experiments of genetic algorithm inversion from simulated data were conducted, results show that it is very robust to retrieve component temperature using genetic algorithm ; genetic algorithm can cope with uncertainty inversion problem pretty well if full advantage of priori knowledge was taken. comparison between inversion results and ground - truth data has been done. this paper offers a new example to retrieve component temperature from multi - channel, multi - angle thermal infrared data based on the model of directionality of thermal radiance

    在熱輻射方向性規律的基礎上，以喜直型連續植被為例，進行了大量的monte carlo模擬，建立了輻射亮度和組分溫度植被葉面積指數及土壤比輻射率之間的經驗函數關系。採用遺傳演算法，從熱紅外2個波段2個角度數據中，同時反演混合像元組分溫度土壤比輻射率和葉面積指數等5個參數。通過對模擬的觀測數據進行大量的遺傳演算法反演試驗，結果表明，遺傳演算法反演組分溫度非常穩健，在寬松的先驗知識條件下，遺傳演算法可以解決不確定性反演問題。
  18. Further study will be carried out to improve the model simulations by choosing proper soil and vegetation parameters

    對該模式在淮河流域的植被、土壤等參數的合理選取可能會提高模式的模擬效果。
  19. The authors have developed a device for measuring the normalized difference vegetation index ( ndvi ) by using four specially designed photoelectric detectors ; the ndvi can reflect the growing information and seasonal nitrogen fertilizer requirement of crops, and offers guidance for rational application of nitrogen fertilization

    文中提出了一種由4個專門設計的光電探測器直接得到歸一化植被指數的測量方法，該參數能夠反映作物的生長狀態，知道不同季節的農作物對氮的需求量，對實施變量精準施肥具有重要的指導作用。
  20. And this is the first full application of two - layer model in remote sensing. from separated evaporation and transpiration through the model some important field parameters can be derived, such as canopy resistance, co2 flux and crop water use efficiency. a simplified two - layer model was also presented in case of that only radiative temperature is available

    在組分溫度的幫助下，實現了土壤蒸發和植被蒸騰的準確分離，並且用植被蒸騰速率反算出冠層氣孔阻抗、二氧化碳通量、以及作物群體水分利用效率等農田關鍵參數，是遙感獲得此類參數的新思路。
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