mean annual water 中文意思是什麼
mean annual water
解釋
年平均水位-
Through the above researches, such conclusions were drawn that in the course of fitting the semivariogram of the yearly annual mean rice water sensitivity index in yunnan, the fitting precision of ordinary kriging spherecial model is better than others ; range at the direction of 80. 5 degree is outstanding than others ; as for the precision of interpolation, ordinary kriging spherecial model is higher than others
研究表明：雲南水稻多年平均水分敏感指標變異函數以普通克里金球狀模型擬合最優、 80 . 5度方向變程最大、插值模型以普通克里金球狀模型插值精度較高。 -
It can be used in the larger scale calculation in next research. the main achievements of this project were concluded as follows : 1. substantiation of complementary relationship for area evapotranspiration based on nearly 30 years data from 432 weather stations and 512 hydrological stations in china, using means of water balance, the secular annual mean actual evapotranspiration was established
為今後進行大范圍實際蒸散發研究提供了有益的嘗試，本文主要完成以下幾個方面工作： 1區域蒸散互補關系的驗證利用432個氣象站和512個水文站全國共計944個氣象、水文站近30年的氣象、水文資料，採用水量平衡法，計算流域多年平均實際蒸散發量。 -
Using monthly mean rainfall and temperature data in north - west of china ( nwc ), the characteristics of rainfall anomaly at rainy season in nwc and the inter - annual varieties of drought / flood are diagnosed by means of eof, reof and wavelet analysis et al. and the ncep / ncar monthly reanalyzed data are employed to analyse the evolution character of water vapor flux and it ' s divergence flux, 500hpa height and u, v wind field. results show that ( a ) the space distribution of rainfall anomaly can be separated into seven climate sensitive areas, the first and the third region have the same rought / flood trend
本文使用西北（區） 168個站1961 2000年6 9月（主汛期）月平均降水、溫度資料，運用eof 、 reof 、小波分析等方法診斷了主汛期月降水異常和旱澇的年代際變化；同時利用ncep ncar月平均資料，分析了強（弱）季風年西北空中水汽通量及其散度場、 500hpa高度場、 u 、 v風場的演變特徵，結果表明： （ a ）西北汛期降水可分為七個氣候異常區，第一、三異常區旱澇趨勢相同。 -
On the aspect of optimal scale, regarded the maximum of mean annual net benefits of water sources project as an optimization standard, an optimal method and its concrete steps are presented in this paper
針對當前國內外雨水集蓄利用側重於工程技術性研究，加強其理論性研究便顯得十分迫切和必要，具有重要的現實意義和經濟價值。 -
( c ) land natural productivity increase from 7843 kg / ( hm2 - a ) to 17335 kg / ( hm2 - a ) relate to altitude closely, and the mean rate of enhancing yield is 23. 53 percent in this region with annual enhancing - rate of 0. 64 percent in last 15 years. ( d ) there are many facters that have been influe ncing soil effective coefficient that ' s soil organic matter, total nitrogen, effective phosphine and soil texture in turn. in a word, attenuation cause of land productivity is the result of water and soil. ( e ) the forestland potential productivity change from 3986 kg / hm2 to 15034 kg / hm2, but it has a high distinction between southern aera and north area in yaan city. ( f ) the grassland potential productivity increase from 4085 kg / ( hm2 - a ) to 16973 kg / ( hm2 - a ), but it has a high classification of potential productivity, ( g ) ditribution map was formed of potential land productivity. ( h ) it could be act as decision support for agriculture development, national land planning and ecotop constructive, etc
5 、土地自然生產潛力水平的主要土壤限制因素為有機質、全氮，其次為速效磷和土壤質地；區域潛在生產力差異的制約因素，主要為土壤，次為水分，水、土兩項衰減合計為45 . 99 ，石棉、漢源兩縣水、土衰減達到60左右。 6 、林地潛力在3986 15034kg / hm ~ 2之間，高等級林地比重小，以大相嶺為界，北部的各縣林地生產力水平高，南部的兩縣林地生產力水平較低。 7 、天然草地生產潛力水平高，潛力在16973 4085kg / （ hm ~ 2 ? a ）之間，以高產的一、二、三級草地為主，且近10年來該比例變化不大。 -
Data relating to faecal coliforms and e. coli in this report is presented in the form of annual geometric mean figures, while data on the other 46 water quality parameters is presented in the form of annual median figures
本報告中除了關于糞大腸菌群及大腸桿菌的數據用年度幾何平均數呈列外，其餘46項參數的數據均以年度中位數呈列。 -
It was substantiated that the complementary relationship of evapotranspiration on the yellow river valley exists by using ground observed data from weather stations, hydrological and solar radiation observer. actual evapotranspiration was reckoned by model and results were verified by explored the secular annual mean basin actual evapotranspiration which was calculated from water model
本文利用黃河流域氣象、水文及日射站的水平面觀測資料，證實了流域尺度上存在蒸散互補相關關系，進而採用蒸散互補模型對流域年實際蒸散發量進行估算；用水量平衡法計算的流域多年平均實際蒸散發量對估算結果進行檢驗。 -
Annual mean densities of total phytoplankton in the nine water control zones wczs, 1991 - 2005
一九九一至二零零五年九個不同水質管制區內浮游植物的年平均數pdf -
Temporally, annual potential evapotranspiration is from 882 to 107 lmm, with a mean value of 974mm at qiabuqia ; and it is positively correlational to precipitation and temperature, so it is beneficial for plant growth because precipitation and heat ocurs at the same growth period. ; spatially, annual potential evapotranspiration is from 485mm to 1174mm, with a mean value of 1027mm, and it ' s spatial distribution is negatively correlational to precipitation and slope, whereas positively correlational to temperature and extra solar radiation, therefore the spatio - temporal difference of water become the key factors to plant growth and plant climate potential productivity
在青海共和盆地，歷年潛在蒸散平均974mm ，各月潛在蒸散與降雨和溫度之間是很好的正相關，所以雨熱同季有利於作物生長：年潛在蒸散的空間分佈范圍從485 ? 1174mm ，平均1027mm ，而且年潛在蒸散空間分佈與降雨和坡度是負相關，與溫度和大氣外層輻射正相關，因此水分和溫度的是影響作物水分耗散的重要因子，決定了共和盆地植被的氣候生產力。 -
From the prediction results of several methods we have known that : the annual mean water level in the 2010 will decrease about 0. 6m comparing with present average level
從多種方法預測結果可知，灌區節水工程實施后地下水位較目前平均下降約0 . 6米左右，下降幅度較大。 -
This will provide concrete reference for parameters values which mainly depend on the experiences. according to the selected bp model and related water table depth records and other information, the annual and monthly mean water table depth trends in the future planning year ( 2005, 2010 ) are forecasted on condition that water saving reconstruction projects are accomplished in the larger scale experimental zone ( jiefangzha ) of hetao irrigation district
在此基礎上根據黃河河套灌區多年的水文、氣象和地下水信息，對一個大尺度區域的多年年均地下水埋深變化進行了bp模型的模擬與檢驗，預測了灌區節水工程實施后未來規劃水平年（ 2005 ， 2010年）年平均、月平均地下水位下降的動態。
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