drought index 中文意思是什麼

drought index 解釋
乾旱指標
  • drought : n. 1. 旱災，乾旱。2. 〈比喻〉（長期的）缺乏。3. 〈古語〉乾渴；乾燥。
  • index : n （pl es dices ）1 索引。2 指標，標準，標志。3 示[食]指 （＝index finger）。4 指數。5 【印刷】指...
  1. Index analysis on comprehensive judgement of drought resistance ability of white poplar hybrid clones

    氮素高效基因型杉木無性系的選擇研究
  2. The whole thesis consists of three parts. firstly, we establish the meteorological disaster database of jilin province and deduce the statistic frequency of the main meteorological disaster on the base of choosed meteorological disaster index. the spatial distribution law and time variation of drought, flood and low temperature cold damage are concluded with the gis technology

    全文主要由三部分組成：首先，在選擇氣象災害指標的基礎上，建立了吉林省氣象災害數據庫，統計主要農業氣象災害的發生頻率，然後利用gis技術得到吉林省旱澇、低溫冷害的空間分佈規律和時間變化。
  3. The loss results from those factors, which are divided into three groups : the first one, drought, agriculture proportion and education index, is positively related with the loss of technical efficiency. the second, arable land per capita, weight of irrigation area and weight of new maize breed, is negatively related with it, and the last, water disaster and planting area of maize, is irrelated with that

    在影響玉米產出的各個因素中，旱災、農業比重、教育指數和效率損失呈正相關，人均耕地面積、灌溉、新品種應用和效率損失呈負相關而與技術效率正相關，水災、玉米種植比重兩個變量沒有表現出和效率損失有明顯的相關性。
  4. Abstract : monthly rainfall data from 1951 to 1995 for june, july and august in 13 meteorological stations of the north china were used for accounting z index and discussing serious flood and drought featureas in these months. serious flood mainly happened in july and august, and sevious drought mainly happened in august. there were more flood in 1950 ' s to 1960 ' s and more drought since 1970 ' s in the north china. meanwhile, the deeper trough which covered the regions from the ural mts. to the balkhash lake play an important role in serious rainstom in rainy season in the north china. there often happened serious flood ( drought ) when the northwester pacific subtropical high was by west and north ( east and south ), and the sea surface temperature in the equatorial central and eastern pacific was mainly in dropping ( raising ) stage

    文摘:利用華北平原地區的13個站點， 45年（ 1951 1995 ）的降水資料，對夏季4個時段（ 6月、 7月、 8月、 6 8月）進行了z指數計算，確定了該地區各個時段的嚴重澇年和嚴重旱年.發現華北地區雨季的嚴重洪澇主要集中在7 ， 8月，嚴重乾旱則主要發生在8月，並可明顯看出由50 60年代的多水期向70年代中期以後的少水期的轉變，另外，烏拉爾山到巴爾喀什湖附近的低壓槽加深和西北太平洋副熱帶高壓的北抬，對華北地區雨季持續性暴雨的產生起著決定性的作用.嚴重洪澇年的夏季（ 6 8月） ，西北太平洋副熱帶高壓偏西、偏北，赤道東太平洋海溫多處于下降階段;嚴重乾旱年西北太平洋副高偏東、偏南，赤道東太平洋海溫則處于上升階段
  5. The method of the climatic drought - flood index and its analysis

    氣候旱澇指標方法及其分析
  6. The characteristics and prediction of spring drought index in the east gansu province

    甘肅東部春播期乾旱指數的變化特徵及預測
  7. Fifty nine accessions of soybean [ glycine max ( l. ) merr. ] of 301 ones from huanghuaihai and middle - lower changjiang valleys were tested at seedling stage in two years for their drought tolerance by using the mean membership index value averaged over those of plant height, leaf number, root dry weight, stem and leaf dry weight. 4 tolerant accessions ( rank 1 ) and 2 sensitive ones ( rank 5 ) were identified

    摘要從301份大豆品種中按根系類型選取黃淮海和長江中下游地區代表性材料59份，在苗期乾旱脅迫和非脅迫條件下對地上部和地下部性狀進行2年重復鑒定，發現材料間性狀隸屬函數值具有豐富遺傳變異，以株高、葉齡、根干重和莖葉干重隸屬函數的算術平均數為抗旱綜合指標，從中篩選出漢中八月黃、晉豆14 、科豐1號、圓黑豆等強耐旱型（ 1級）材料和臨河大粉青、寧海晚黃豆等乾旱敏感型（ 5級）材料。
  8. From the point of view of risk, a index system of risk assessment of winter wheat losses caused by drought was established, including the meanings, token models and estimate methods of risk index of natural water deficiency rate, risk index of yield reduction rate and trending vector coefficient of disaster resistance capability, then on the base of these indices, the comprehensive risk index model of losses caused by drought was established and regionalized. the results indicated : the high risk region included the middle north of shanxi, some of middle of shaanxi and some of hebei in east ; the higher risk region included some of middle of shaanxi, the tangshan region and some of west of hebei ; the moderate risk region included the middle of s

    從風險的角度，建立了冬小麥乾旱災損風險評估的指標體系，包括自然水分虧缺率風險指數、減產率風險指數和抗災性能趨勢向量系數的意義、表徵模式和估算技術方法，在此基礎上構建了災損綜合風險模型，並對模型參數區域化，結果表明：冬小麥乾旱災損高風險區在陜西中北部、山西中部的部分地區和河北滄州的部分地區；較高風險區在山西中部的部分地區、河北的唐山地區和西部的部分地區；中風險區在陜西中部、山西南部、河北滄州的大部分地區；低風險區在陜西中南部、河南中北部、北京市、天津市、河北中南部和山東省。
  9. And the influence of water condition to growth and yield of crops were discussed briefly. then based on the meteorological data, yield data, drought and flood data of jiangsu province from 1961 to 2000, the water profit and loss of every ten days in the growing period of crops was calculated on the foundation of the water balance formula in every agriculture climate district. the disaster index of drought and flood was confirmed and calculated

    根據江蘇省近40餘年的氣象資料、產量資料和旱澇災害資料，分農業氣候區利用農田水分平衡方程計算了不同作物逐旬水分盈虧量，確定了旱澇災害指數，並用多元積分回歸方法分析了降水對棉花和小麥產量的定量影響，得出作物生長期內逐旬水分敏感指數。
  10. Application of palmer drought severity index method to real time drought survey in china

    帕爾默旱度指數方法在全國實時旱情監視中的應用
  11. Takeing drought - resistant index and drought - resistant coefficient as evaluation indicators, also considering their fertility and stability of yield, germplasms that showed fine character were rongjiang cihong, luodian juhuang, wangmo huang, ziyun jianzuihong, wangmo mashan hong, ziyun huang and so on

    以抗旱系數和抗旱指數為主要評價指標，兼顧其穩產性和豐產性，表現優良的種質有：榕江刺紅苞谷，羅甸桔黃苞谷，望謨黃苞谷，紫雲尖嘴紅包穀，望謨麻山紅苞谷，紫雲黃苞谷等。
  12. The correlativity between theoretical value and the actual value of soil moisture content in 93. 3 percent of observational stations is distinct. all this shows that calculational methods of zndx is more reason for studing the flood or drought of northwest chine. ( 2 ) index _ z and index _ k ca n ' t objectively remark extent of drought and flood event. both ca n ' t distinguish the difference of some years which have the same precipitation and have different temperature, awc

    西北地區10個代表站三種指數值的對比表明， z指數與k指數僅反映西北地區同期的降水，而zndx指數不僅反映了同期降水狀況，且與同期氣溫及前期氣候濕潤度有關。 （ 2 ）通過z 、 k與zndx指數對西北地區旱澇等級的對比研究表明， z指數與k指數對西北地區旱澇等級的確定不具有客觀性。
  13. By using data of index of subtropical high between 1951 and 2000, we discovery that it has 3. 5 and 2. 5 year oscillation, it accords with precipitation oscillation and show that it is principle effect of precipitation. analysis of vorticity and divergence show that subtropical high affect precipitation, drought and flood by 500 & 700hpa vorticity and 850hpa divergence. vorticity and energy index of subtropical high are sign of chinese precipitation, drought and flood

    利用1951年至2000年副高特徵指數及渦度、散度、水氣通量散度物理量，小波分析發現，西太平洋副高面積和強度有3 . 5年周期，北界指數有2 . 5年和5年周期，這和中國降水、旱澇變化趨勢一致，說明副高是影響降水主要因素之一。
  14. The computed palmer drought index of 124 stations in the north of china are used to analyse some charactersin this region, including the main drouthy years and its severity, the drought range, etc. we also analyse the main drouthy periods, the frequency of each drought degree, the main area and the drought cycle in northwest china, north china and northeast china. on the base of the further modification of palmer drought severity model, a daily palmer drought severity model are developed. lt indicated that the daily drought index is accordant with the monthly drought index, and can reflect the change of severity in detail

    應用進一步修正的帕默爾旱度模式計算的我國北方地區124個站點的40年逐月旱度值，分析了我國北方地區的一些乾旱特徵，包括北方地區旱情較重的大旱年及其嚴重程度、主要乾旱區；華北、西北和東北地區各等級乾旱發生頻率、主要乾旱時段、乾旱周期等，為防旱抗旱提供了科學依據。
  15. Monthly rainfall data from 1951 to 1995 for june, july and august in 13 meteorological stations of the north china were used for accounting z index and discussing serious flood and drought featureas in these months. serious flood mainly happened in july and august, and sevious drought mainly happened in august. there were more flood in 1950 ' s to 1960 ' s and more drought since 1970 ' s in the north china. meanwhile, the deeper trough which covered the regions from the ural mts. to the balkhash lake play an important role in serious rainstom in rainy season in the north china. there often happened serious flood ( drought ) when the northwester pacific subtropical high was by west and north ( east and south ), and the sea surface temperature in the equatorial central and eastern pacific was mainly in dropping ( raising ) stage

    利用華北平原地區的13個站點， 45年（ 1951 1995 ）的降水資料，對夏季4個時段（ 6月、 7月、 8月、 6 8月）進行了z指數計算，確定了該地區各個時段的嚴重澇年和嚴重旱年.發現華北地區雨季的嚴重洪澇主要集中在7 ， 8月，嚴重乾旱則主要發生在8月，並可明顯看出由50 60年代的多水期向70年代中期以後的少水期的轉變，另外，烏拉爾山到巴爾喀什湖附近的低壓槽加深和西北太平洋副熱帶高壓的北抬，對華北地區雨季持續性暴雨的產生起著決定性的作用.嚴重洪澇年的夏季（ 6 8月） ，西北太平洋副熱帶高壓偏西、偏北，赤道東太平洋海溫多處于下降階段;嚴重乾旱年西北太平洋副高偏東、偏南，赤道東太平洋海溫則處于上升階段
  16. The monthly palmer drought index of 160 stations from 1961 to 2000 were computed based on the further modified palmer drought severity model compared the computed palmer drought index with the actual drought and waterlog, it shows that the further modified palmer drought severity model can reflect the severity of meteorological drought or waterlog better and is more applicable for china than the palmer drought severity model modified in 1986

    應用進一步修正的帕默爾旱度模式計算了我國160個站點1961 - 2000年逐月旱度值，並與各個站點40年實際旱澇災情及1986年修正的帕默爾旱度模式計算的旱度值相比較驗證，結果表明進一步修正的帕默爾旱度模式提高了原有模式的科學性和客觀性，能較好地反映旱澇程度，特別對一些嚴重乾旱時段更為吻合，更適合應用於我國大部分地區。
  17. The precipitation and evaporation data at 12 observational stations from 1958 to 2003 were used to calculate the spring drought index, the criterion of spring drought and the spring drought index series were set up, the spatial and temporal features, yearly and decadal climate variability of the indexes of the loess plateau in gansu province were analyzed

    摘要利用甘肅省甘肅黃土高原地區12個代表站1958 ~ 2003年春季3 ~ 5月逐候降水、蒸發資料，建立了該地區早春旱和晚春旱指數序列，確定了春旱等級標準，進一步分析了春旱的時空分佈特徵及其年際（年代際）變化規律。
  18. Based on the climate data from 1961 to 2000 in northwest chine, a new flood / drought indeces - palmer _ z index ( zndx ) is introduced. by analyzing and contrasting k - index, z - index and zndx, demonstrated the rationality of zndx and again determined grades of flood / drought for zndx and regional flood / drought indeces. the modified zndx is recognized to be optimum for studing the flood or drought of northwest chine, acting to the result of comparing annual and season flood / drough grades with those of history

    本文利用西北地區1961 2000年月、日氣候資料，引進一種新的旱澇指數方法palmer _ z指數（簡稱zndx ） ，通過與國內現用的z指數值、 k指數值對比分析，及其所含參數計算值與實測值的對比分析，論證了zndx指數的合理性，並對其單站旱澇指數及區域旱澇指數等級進行修訂。
  19. Advances in drought monitoring by using remotely sensed normalized difference vegetation index and land surface temperature products

    基於植被指數和土地表面溫度的乾旱監測模型
  20. The results showed the drought index could successively and dynamically monitor the drought process, so it was the better representative ; the frequency of spring drought of the loess plateau area in gansu was stronger in north than in south and its center is in gansu center ; the frequency of serious late spring drought was increasing while that of early spring drought was decreasing

    結果表明： （ 1 ）乾旱指數能夠連續動態地監測乾旱過程，因而具有較好的代表性； （ 2 ）甘肅黃土高原地區早春旱和晚春旱北部高於南部，乾旱中心在隴中； （ 3 ）重晚（早）春旱的發生頻率增加（減少） ，站數增多（減少） ； （ 4 ）區域性早春旱隨年代呈下降趨勢，區域性晚春旱略有上升的趨勢，但不明顯。
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