classification of soil 中文意思是什麼

classification of soil 解釋
土壤分類
  • classification : n 1 選別；分等，分級；分選。2 【動、植】分類（法）。 〈分類級別為： phylum 【動物；動物學】及 div...
  • of : OF ＝Old French 古法語。
  • soil : n 1 泥土，土壤；土質。2 土地，國土。3 滋生地，溫床。4 農業生活，務農。n 1 臟東西，污物，污穢，污...
  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. Seasonal frost heaving classification of the highway subbase soil

    季節性凍脹與路基穩定評析
  3. Standards for classification and gradation of soil erosion

    土壤侵蝕分類分級標準
  4. Pedologic site assessment - designation, classification and deduction of soil parameters normative and nominal scaling

    土壤學現評估.土壤參數的標識分級和推導
  5. 1. 4 based on the attribute db, the soil classification graphic db is set up by using arc / info cis. the soil order, suborder sketchs and basic classification unit ( series ) sample maps, make the distribution of soil in hubei province clear at a glance

    4在屬性數據庫的基礎上，利用arc infogis建立了湖北省土壤分類圖形數據庫（空間數據庫） ，運用計算機編制和輸出了全省土壤系統分類土綱、亞綱概圖和基層分類單元（土系）樣塊圖，使全省土壤分佈狀況一目了然。
  6. 1. 3 under inquiring, inspecting, contrasting and analysing the information of soil basis ( series ) classification, the soil taxonomy of hubei province is established. and the soil for hubei province are divided into 10 soil orders, 16 suborders, 35 great groups and 54 subgroups, contrasted with international soil systematics such as the american soil taxonomy, the fao world soil map legend unit and the world soil resource reference basis, any sort of soil in hubei province has each own apprepriated places. this conveniently joins the soil taxonomy and the achievements in soil research in hubei with the international convention and realizes the international communication and application

    3通過全省土壤基層分類（土系）信息的查詢檢索和分析比較，擬定了湖北省土壤系統分類，將全省土壤劃分為10個土綱、 16個亞綱、 35個土類、 54個亞類，並與美國土壤系統分類、 fao世界土壤圖例單元和世界土壤資源參比基礎等國際土壤分類系統進行對比，確定其相應位置，便於湖北省土壤分類和土壤研究成果與國際接軌，實現我國土壤信息在國際上交流和應用。
  7. Abstract : according to the chinese soil taxonomic classification ( revised proposal, 1995 ) and our data and information for classification of linze zone in the hexi corridor, the authors propose a taxonomic classification of soils of linze zone in the hexi corridor, in which all the soils are divided into 4 soil orders ( anthrosols, aridisols, gleysols and cambisols ), 4 soil suborders, 5 soil groups and 8 soil subgroups

    文摘:根據《中國土壤系統分類（修訂方案） 》 （ 1995 ） ，對河西走廊臨澤樣區土壤進行了系統分類研究，提出了臨澤樣區土壤系統分類方案：將土壤分為4個土綱（人為土、乾旱土、潛育土和雛形土） ， 4個亞綱， 5個土類和8個亞類。
  8. At the same time the study analyse the structural system of the index and it ' s weight with the ahp, and choose soil quality, soil thickness, the content of organic matter, terrain, elevation and the ration of irrigated guarantee as gradation index and choose soil quality, soil thickness, the content of organic matter, terrain, elevation, the ration of irrigated guarantee, the condition of traffic, the distance from the central city, the scatter degree of field, the neat degree of field, loss of water and erosion of soil and land contamination as classification index. at the same time the study emphasize the effect of the condition of ecological condition and environmental contamination

    採用層次分析法對該區域農用地分等定級的指標體系及其權重進行了研究，選擇表層質地、土層厚度、有機質含量、地形、海拔、灌溉保證率等6項指標參與分等評價，選取表層質地、土層厚度、有機質含量、地形、海拔、灌溉保證率、對外交通狀況、距市中心距離、田間道路狀況、田塊分散度、地面平整度、水土流失、土地污染等13個因子分指標區進行定級評價，強調了生態條件及其環境污染狀況在農用地分等定級中的作用。
  9. Referencing between the genetic soil classification of china ( gscc ) and the chinese soil taxonomy ( cst ) for gscc - high - mountain - soils was conducted and their quantitative and spatial distribution characteristics within cst were studied, based on the 1 : 1m soil database of china, which consists of 3 parts, 1 : 1m digital soil map, soils profiles attribution database and soil reference system of china

    摘要本文利用最新建立的1 : 100萬中國土壤數據庫，研究了我國發生分類高山土與中國土壤系統分類的參比及其在系統分類下的空間分佈和數量特徵。
  10. From 1950s ， geographical - genetic classification theory originated from the former soviet union exerted its extreme impact on soil classification of china

    在地理發生分類體系中，按生物氣候氣候條件，熱帶、亞熱帶地帶性土壤分別為燥紅土、紅壤、黃壤、赤紅壤和磚紅壤。
  11. 3 ) indexs of soil series taxonomy and retrieval orders : a ) soil structure : the classification was based on the soil profile and " b " horizon differentiation. b ) texture style. c ) organic substance : according to four levels 20. 1 - 30. 0, 10. 1 - 20. 0, 6. 1 - 10. 0, < 6. 0 ( g / kg ) 4 ) according to the standard of chinese soil taxonomy and this study, 17 soil swatches were divided into 14 soil series. among which, 9 belonged to cambic order, the order 7 belonged to entic order

    土壤有機質狀況：按照土壤有機質分級指標，結合供試土壤有機質狀況，按20 . 1 ? 30 . 0 、 10 . 1 ? 20 . 0 、 6 . 1 ? 10 . 0 、 6 . 0 （ g kg ）四個級別劃分土系（ 4 ）按照系統分類統一標準及本研究建立的土系劃分指標和檢索順序，對照供試土壤的理化性質進行檢索， 17個供試土壤共劃分為14個土系，其中9個屬于雛形土綱， 5個屬于新成土綱。
  12. In this paper, a series of surveys on road condition, pavement - performance and destroy reason are analyzed, soil property, hydrologic regime are combined, modulus of resilience are confirmed on heavy compaction test, foundation classification in area of qinhuangdao is divided into 3 grades and highway is divided into 3 districts according to the principle that different soil grades produce the same effect on thickness of base course or bottom course, classification of traffic is divided into 4 grades after observation materials of traffic volumes are collected extensively, traffic characters and parameters are analyzed

    本課題在對現有路面結構狀況和使用狀況進行調查，並對路面使用性能和破壞原因進行分析的基礎上，結合秦皇島地區的土質、水文條件，確定重型擊實標準條件下土基回彈模量值，依據不同等級土基對路面基層或底基層的厚度產生大致相同效應的原則，將秦皇島地區地基強度等級劃分為三級並將本地區公路分成三個區。在廣泛收集交通量及組成的觀測資料，了解交通特性，進行交通參數分析后將交通量等級劃分為四級。
  13. The comparability and otherness are coexist in the text of soil taxonomy with numerical analysis method, which indicates that soil taxonomy is a kind of more objective and more scientific method for soil classification, and the numerical analysis can be considered as the measure to test the soil taxonomy

    用數值分析方法檢驗系統分類相似性與差異性共存，表明系統分類是一種更客觀、更科學的分類方法，數值分析可作為檢驗系統分類結果的手段。
  14. The sensitivity analysis of design parameter of subgrade and pavement are used to confirmed the degree of impact on working state with change of the design parameter, it is the rational and economy that the range of design parameter are proposed. structure combination design is used to proposed basic structure of qinhuangdao ' s asphalt pavement in view of local natural environment, build material, traffic classification and soil grades. this paper puts forwards suiting 39 kinds of typical structure of qinhuangdao ' s asphalt pavement according to the actual structure, experimental section long - term observation, extensive surveys, structure theory ' s analysis and calculation

    在公路等級、交通量等級、土基等級及路面材料參數研究的基礎上進行路基路面設計參數敏感性分析，用以確定設計參數的變化對路基路面工作狀態的影響程度，並據此給出了經濟合理的路基路面設計參數范圍；結合本地自然環境、築路材料、交通狀況及土質情況進行路面結構組合設計，提出了適宜於秦皇島地區公路瀝青路面的基本結構；最後根據實際路面結構、試驗路的長期觀測、大量調查與路面結構理論分析計算相結合，提出並推薦適合秦皇島地區的39種瀝青路面典型結構，這是本課題的主要宗旨，其研究成果將直接指導設計人員的工作，並避免隨意性和盲目性，對加快秦皇島地區公路交通事業的發展將具有十分重要的意義，對其他地區也有一定的指導意義。
  15. In order to exhibit the application of the method of porous media macroscopical geometric classification and minimum energy dissipation, the combination system between one - dimension pipeline media and three - dimension block media is tried to simulate the destroying and developing process of soil piping erosion

    為了進一步展示多孔介質宏觀幾何分類方法及最小能量耗散原理的應用，文中還嘗試採用具有一維性質的管道介質與具有三維性質的塊體介質組合體系進行了土體管涌破壞發展過程的模擬。
  16. The main results were as follows : ( 1 ) due to their different working principles, the measured result of clay content by laser particle - size analysis was lower than that by using pipette and sieve analysis. the classification results of soil texture by using these two methods agreed well with each other

    主要結論如下： （ 1 ）由於激光法和吸管法原理的不同，激光法測得的粘粒含量較吸管法低，但是在土壤質地分類上，激光法和吸管法的結果基本一致。
  17. Soil quality - classification of the nutrient supply conditions of soil

    土壤質量.土壤的營養供給條件的分類
  18. Nowdays, the international majority of soil classification is the soil taxonomy, which is based on the diagnostic horizon and diagnostic characteristics, and characterized by quantification. the tendency of soil classification in the world is quantification, standardization and intemationalization. the study of chinese soil taxonomy has achieved great phase outcome - chinese soil taxonomy

    當前，以診斷層和診斷特性為基礎、定量化為特點的土壤系統分類是國際土壤分類的主流，定量化、標準化和統一化已成為國際土壤分類發展的大趨勢，我國的土壤系統分類研究也取得了階段性成果? ?中國土壤系統分類。
  19. ( 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。
  20. Quantitative classification of soil salinization in the huang - huai - hai plain

    近代黃河三角洲的濱海鹽漬土及其開發利用
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