temporal and spatial variation 中文意思是什麼
temporal and spatial variation
解釋
時空變化-
The results show that : l ) there are three anomalous high temperature areas and three anomalous low temperature areas, and the whole area high temperature anomaly took place in the late 1980s, whereas the low temperature anomaly in the 1970 ; 2 ) the spatial mode manifests identical variations in the whole area, and the temporal coefficient curve is of 2 - 3 year period oscillation and an interdecadal abrupt in the late 1970s ; 3 ) the variance of interdecadal component is obviously larger than that of interannual in the most part of nespa ; 4 ) the interdecadal variation of the temperature is mainly linear ascendance in the late 1970s, the large range anomalous high ( low ) temperature occurs when the interdecadal and interannual anomaly are both positive ( negative ) in the year ; 5 ) the temperature anomaly is divided into four patterns : southern, northern, eastern and western patterns, in which the interdecadal variation of the southern and western patterns is relatively importance and the interannual variation of eastern and northern pattern is relatively importance
本文用夏季（ 6 - 8月）中國東北地區91個測站44年氣溫資料，對該區夏季氣溫的氣候平均和異常場進行分析，採用諧波分析將異常變化的年代際、年際尺度分量分離，分別分析兩種尺度上氣溫異常的時空特徵，最後應用reof進行了氣溫異常的區劃，研究局域異常變化的年代際、年際分量的變化特徵。結果發現： 1 ）東北夏季有三個異常高溫高發區和三個異常低溫高發區。全區性異常高溫（低溫）階段出現在上世紀80年代后（ 70年代） 。 -
For this reason, to analyze the spatial and temporal dynamic of ground water table and water quality beneath the typical phytocommunity in particular areas, will be helpful to probe into the dynamic formation of soil moisture and salinity, and to understand the spatial variation of vegetation
因此，分析區域內典型植物群落的地下水水位、水質在時空上的動態變化，有助於探討土壤水鹽動態變化的形成條件，揭示植被在空間上梯度變化的原因。 -
The paper is mainly based on geography, ecology, sight ecology, region location theory and system theory. by interpreting the mss remote sensing image of 1970s and the tm remote sensing image of 1980s and the end of 1990s in keerqin sandlot based on background database and expert information, we have achieved the three periods vector data of land desertification of the research area, then we have disposed the data property by using the powerful spatial analysis function of arc / info and achieved the information extraction and analysis supported by arcview and erdas imagine. thus the rule of temporal and spatial variation of land desertification in keerqin sandlot is researched and the blueprint and countermeasures of the prevention and treatment of land desertification in keerqin sandlot are put forward
本研究主要以地理學、生態學、景觀生態學、區位論和系統論為主要理論支持，通過對科爾沁地區20世紀70年代的mss遙感影像、 20世紀80年代和90年代末tm遙感影像進行基於背景數據庫和專家知識的解譯，獲得科爾沁研究區土地沙漠化的三期矢量數據，利用arc / info軟體強大的空間分析功能對屬性進行處理，並在arcview 、 erdasimagine軟體的支持下進行信息提取與分析，研究了科爾沁沙地土地沙漠化時空變化的規律，提出了科爾沁沙地土地沙漠化防治的構想與對策。 -
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 -
Spatial - temporal variation and its driving factors of tamarix forestry at edge of minqin oasis
民勤綠洲邊緣檉柳荒漠林的時空變化及其驅動因素 -
In this paper, the climatic variation features and spatial and temporal distribution of the flood and drought in zhejiang province were analyzed by using 36 monthly and seasonal station data during 1961 - 1999 observed over zhejiang province, 160 rainfall and temperature data during 1951 - 1999 observed over china, northern hemisphere 500mb height data during ! 961 - 1999, the planting and flood disasters area data in zhejiang province during 1949 - 1998. we used many method : calculated trend coefficient of rainfall and temperature, used eof, reof, ssa ( singular spectrum analysis ) and mem ( maximum entropy spectrum ) method and synoptic method. we first studied the climatic variation features of summer and autumn and characters of the flood and drought in zhejiang
本文用1961 - 1999年浙江省36個氣象觀測站的降水量和氣溫資料、 1951 - 1999年全國160站的降水量和氣溫資料、 1961 - 1999年500hpa月平均高度資料和1949 - 1999年浙江省11個地市的受災面積、成災面積、耕地面積等資料，通過計算趨勢系數、變量場eof分解、旋轉eof分解、奇異譜分析和最大熵譜分析等多種統計學方法和天氣學方法，研究了浙江省氣候變化特點及旱澇災害時空分佈的特徵。 -
In this paper, on the basis of observed data, spatial - temporal variation characteristics of soil temperature and soil moisture. soil temperature effects on soil water movement are studied for several kinds of typical underlying surface by using statistics, spectrum, filtering wave methods
本文首先根據幾種典型下墊面條件下的土壤表層（ 1 - 1m ）的土壤溫濕度資料，採用統計分佈、功率譜分析、濾波等方法分析典型下墊面條件下土壤表層水熱分佈特徵及其相互作用。 -
In this article, based on the rainfall data over north china in spring and respective month, atmospheric circulation data ( ncep ) and the sea surface temperature data ( sst ), the methods of eof analysis, yamamoto analysis, mesa analysis, correlation analysis and composition analysis are used to study totau spatial and temporal distribution characteristics of the rainfall in spring and respective month over north china, investigate correlation with interannual andinterdecadal variation of sea surface temperature and atmospheric circulation, and analyse mechanism of influence
本文用華北春季及春季各月降水資料， ncep資料以及coads海溫資料，採用eof分解、 yamamoto分析、最大熵譜分析、相關分析、合成分析等方法研究了華北春季、各月降水的總體分佈特徵及時空分佈特徵，並從總體上探討了其與海溫、大氣環流年際、年代際變化的關系及其影響機制。 -
In the late part of the active developing period, the temporal variation of sediment concentration and sediment transport ratio of each rainfall can be expressed by exponent function and the variation presents quadratic polynomial function in the stable developing period. the spatial variation character of sediment yields with space of the experimental watershed model. the active position of soil erosion and sediment yield of the experimental watershed model changes from the downside to the upside with the developing process of the watershed model
流域模型侵蝕產沙空間變化特徵侵蝕產沙的活躍部位隨流域模型發育過程呈現由流域模型下部逐漸向上部發展特徵，其中流域模型下中部為發育初期時段和發育活躍時段侵蝕產沙的活躍部位，流域模型上部是發育穩定時段侵蝕產沙的活躍部位。 -
Based on the fractal character of the small watershed topographic feature, the spatial and temporal variation character of sediment yield of the watershed model, the dynamic developing process and fractal character of the topog raphic feature of the watershed model, and the coupling relationship between the sediment yield and the topographic feature of the watershed model are " studied by simulate experiment, fractal theory, high precise photogrammetry and gis technology. the validation research is conducted in chabagou watershed where the observation data of rainfall, sediment and runoff for 11 years is collected. the study provides new theory and method for the topographic feature quantitative research in the prediction model of small watershed sediment yield
本文依據流域地貌形態所具有的顯著分形特徵，從模擬實驗出發，利用分形理論和方法，結合高精度攝影測量和gis技術，對流域模型侵蝕產沙時空變異特徵、地貌形態發育過程及其相應的分形特徵、流域模型侵蝕產沙與地貌形態耦合關系進行了深入研究，並以具有11年降雨泥沙徑流觀測資料的岔巴溝流域為例進行了驗證研究，為實現從單坡面侵蝕產沙模擬、預報向流域侵蝕產沙模擬、預報轉化過程中地貌形態參數的提取提供了理論和方法，為黃土高原小流域水土流失綜合治理提供了科學實踐依據。 -
Summer precipitation in northeast china ranging from 1960a to 2000a and ncep reanalysis data is applied to study the temporal and spatial features of summer rainfall and extreme precipitation in northeast china. the results show : 1 summer rainfall in northeast china exhibits upward trend with the cycle variation of 14 years and 2 to 4 years. two abrupt changes occurs in summer rainfall with its happening time on 1964 and 1988 / 89
利用東北地區99個測站的1960 ? 2000年夏季逐日降水資料，以及ncep再分析資料，採用旋轉經驗正交函數、 morlet小波分析、合成分析等方法分析了東北地區夏季降水的演變特徵和降水異常的環流背景，得出主要結論如下： 1東北地區夏季降水存在著減少趨勢，並且有14年和2 4年的周期存在，降水發生過兩次突變現象，分別發生在1964年和1984 85年之間。 -
The overall temporal and spatial variation trends in the recent 30 years are that : the total area of desertification land is increasing. the reverse trend of land desertification is greater than the evaluative trend. the proportion of gently reversion and distinctively reversion is equivalent
30年來，科爾沁沙地土地沙漠化的時空變化總體趨勢是：沙漠化土地的總面積呈增加趨勢；研究區土地沙漠化逆轉的趨勢大於發展的趨勢，輕度逆轉和明顯逆轉的比例相當；土地沙漠化的程度加重。 -
The knowledge model was developed based on the dynamic relationships between crop and environments, and quantitative representation of the temporal and spatial variation in crop growth and management indices. this provided the decision - making of dsspf with interpretation and wide applicability, thus overcoming the shortcomings of the traditional expert system with strong empiricism and localization
知識模型是基於作物與環境的動態關系，通過定量描述作物生育和管理指標的時空規律，從而使dsspf中的管理決策支持具有解釋性和廣適性，有效解決了專家系統決策中地域性和經驗性較強的這一難題。 -
Based on the analysis of the features of asia winter monsoon and north - west pacific temperature ' s temporal and spatial variation, using simulation and statistic analysis methods such as correlation analysis, synthesis, svd and so on, this paper study priority the regional characters of asian winter monsoon ' s influence on north - west pacific temperature. statistic analysis and simulation all indicate that winter monsoon ' s impact on north - west pacific temperature contains regional characters positively, abnormal strong winter monsoon will causes the temperature ' s reducing of kuroshio and our offshore and increasing of the north of pacific warm pool synchronous, and the temperature of the adjacent area between the north of kuroshio and the oyashio will rise in later season
在分析東亞冬季風與西北太平洋海溫時空變化特徵的基礎上，通過相關、合成以及svd等統計分析方法和數值模式模擬，本文重點研究了東亞異常冬季風對西北太平洋海溫影響的區域性特徵，統計分析與模式模擬結果都表明：東亞冬季風對西北太平洋海溫影響存在明顯的區域性特徵，主要分為三個區域，黑潮與我國近海、西太平洋暖池北部、日本東部的親潮與黑潮交界處。 -
Spatial and temporal variation of atmospheric nitrogen deposition in north china plain
華北平原大氣氮素沉降的時空變異 -
The study has systematically investigated the characters of spatial and temporal variation of temperature and precipitation in qinghai since 1961, and the results show that the trend rate of annually average of temperature in qinghai is significantly higher than that of the other places in the whole china, with qinghai acting as a sensitive area of china climate warming, and that precipitation efficiency is also clearly improved
以配合西部大開發進行基礎性、戰略性和前瞻性研究，為青海省生態環境與社會經濟的協調發展，水土資源的可持續利用提供科學依據。本研究系統分析了1961年以來青海省氣溫、降水等氣候特徵因子的時空變化特徵，表現在青海高原年平均氣溫變化傾向率要明顯高於全國，是中國氣候變暖的敏感區，降水的有效性發生了明顯變化。 -
Compared with former study, because the spatial and the temporal resolution of the data sets are different and the different bulk formulas are used to calculate the fluxes, the values of fluxes are different. but the seasonal variation processes of heat flux are similar as well as the space pattern in those studies
與前人相關研究工作相比，由於不同資料集的時間，空間解析度不同，所採取的經驗公式不同，在量值上有明顯的差異，但在時間變化過程及空間分佈上相似。
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