factors of erosion 中文意思是什麼
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Some factors affecting the alluvion and erosion of the yellow river delta are given and analyzed, including human activities, global warming and sea level rise, deep structure, deposits in the delta, local climate, some ocean factors such as current, wave, tide
此外，本文還分析了地質構造、沉積相和沉積物、氣象條件、海洋動力、海平面升高、人類活動等因素對黃河三角洲的沖淤演變的影響。 -
Two coastal villages, kivalina and shishmaref, have suffered from erosion that gunter weller of the university of alaska ? fairbanks attributes to three factors, all directly deriving from warming
阿拉斯加大學費班克分校的魏勒表示，基瓦林納與夕什馬里夫兩個海岸村莊已經受到侵蝕，原因有三，全都與暖化現象直接相關。 -
Abstract : this paper analyzes causal factors of flood in the middle reaches of changjiang river. due to neglection of environmental management, soil erosion in the upper and middle reaches of the changjiag river, lake sedimentation, large - scale reclamation of marshes, the flood regulation capacity of the lake was descended, and flood stage was risen and prolonged. consequently more and more river levees and lake dikes were reinforced almost every year to prevent the disasters, which made flood level go up and flood period last for more days. the frequency of flood and waterlogging disasters rose and their damage was enlarged. several proposals for flood prevention including agricultural modernization are put forward
文摘: 1998年長江大洪水后開始實施的「平垸行洪，退田還湖」的土地利用調整方案，從長遠來說應尋求農業安全且收入逐漸提高條件下的土地利用，長江中游地區應積極推進農業現代化，提高農業勞動生產率，轉移，減少分蓄洪區的人口，移民建鎮，對區內的土地要促進其規模經營，由優秀的有文化的農民經營，平時只有少量的直接從事農業生產的經營管理人員，農忙時則大量地使用季節性合同工或實現機械化，大洪水時退田還湖，減輕長江幹流大洪水的壓力，減少分洪與特大洪災時的損失，這樣還可促進避洪、冬季農業等的發展，也有利於長江中上游地區陡坡耕地的退耕還林，還可在糧食充足時進行休耕，在旱災、糧食緊張時擴大糧食生產? -
On the base of summarizing and evaluating chinese soil erosion models, this paper brings forward future developing directions that the soil erosion models should pay attention to : ( 1 ) paying attention to the theory researches of soil erosion models, consummating from erosion factors basis erosion prediction to erosion processes quantity and theory researches, studying each erosion factor and its interaction impact on erosion processes, and sediment dispersion, transportation and deposition action on complex slopeland, as well as different catchments scales ; ( 2 ) reinforcing the study of gravitation erosion and cave erosion mechanism, and big and middle scale catchments erosion models ; and ( 3 ) making the best of advanced rs and gis technology, providing plentiful datum for erosion models researches, making and for soil erosion models checkout
在總結和評價中國土壤侵蝕模型的基礎上，提出了今後土壤侵蝕模型應該注重的發展方向： （ 1 ）注重土壤侵蝕模型的理論研究，將從以侵蝕因子為基礎的侵蝕預報向侵蝕過程的量化研究和理論完善，研究各侵蝕因子及其交互作用對侵蝕過程的影響，泥沙在復雜坡面以及不同流域尺度間的分散、輸移和沉積作用； （ 2 ）加強對重力侵蝕、洞穴侵蝕機制的研究，加強對大中流域侵蝕模型的研究； （ 3 ）充分利用先進的rs 、 gis技術，為侵蝕模型的研究提供大量的數據源，以利於對土壤侵蝕模型的檢驗。 -
The gullies are formed by the processes of infiltration - interflow - collapses. ( 2 ) in the slope with sand - loess, the major factors of water erosion are the rainfall intensity and rainfall amount of annual first rainfall. ( 3 ) in the region, the evolution processes of slope gully system results from alternative actions of sand deposition and water erosion
（ 1 ）有片沙覆蓋的斜坡小區，徑流量少，但徑流含沙率大，坡溝的形成過程是：垂直滲流坡地潛流崩塌； （ 2 ）在沙黃土斜坡小區，每年春末夏初降雨的強度及降雨量是決定坡面產沙量的關鍵因素； （ 3 ）該區坡溝系統的形成發育是風沙沉積、風蝕與水蝕交替作用的結果。 -
Contributing factors of soil erosion in fanuland shelterbelt network area of western heilongjiang province and control measures
黑龍江省西部農田林網區水土流失成因與防治對策 -
Many geological and hydrological factors of the river section, where the yellow river water intake engineering is laid out, such as the capacity of the reservoirs along the river section upstream and downstream, the rate of the flow discharge, the erosion and silt of the watercourse, the form of the riverbed and the water current, ice tuck, the convergence of the upstream branches of the river section, flood crest, sand crest size, the capacity for flood discharge of the watercourse, the effect of flood control structure around and the impacts on surrounding environment and the third person " s legitimate rights and interests, should be considered
黃河取水工程的布設要考慮工程所處河段的地質水文等諸多因素。如該河段上下游水庫的庫容，泄水流量、河道沖刷、淤積、河床形態、水流形態、冰塞、河段上游的支流匯入、洪峰、沙峰的大小、河道行洪能力的大小、周圍防洪工程的影響及對周圍環境和第三人合法權益的影響等等。 -
To discuss the natural vulnerability of different coasts to future sea - level rise, the paper selects the coasts along the pearl river mouth as the studied area. after analyzing the impacting factors of natural vulnerability along the pearl river mouth, the paper divides the coastline of approximately 412km into 25 15 - minute gird cells. for assessment purposes, the six variables including geography, relative sea - level change, average tide range, regional slope, shoreline erosion or accretion rates and tropic cyclone impacting frequency are selected as assessed variables
為了探討不同海岸帶對未來海平面上升的自然脆弱性，本文以珠江口沿岸作為研究個案，在分析珠江口沿岸自然脆弱性的影響因子的基礎上，把珠江口沿岸412km岸線劃分為25個15 15的網格單元，選取了地質、海平面上升率、平均潮差、區域海岸坡度、海岸侵蝕/堆積率、熱帶氣旋影響頻率6個評價指標，應用cvi指數評價公式對珠江口地區進行海岸脆弱性評價，並建立海岸脆弱性評價數據庫，繪制了珠江口沿岸1 ： 2 ， 000 ， 000的數字化cvi圖。 -
With metal fatigue in material mechanics, this paper deduces the limestone fatigue curve of longmen grottoes by means of marble s one within the error permission. by the experiment elects the crucial factors of current vibration environment in longmen grottoes, the author contrasts the result of the experiment with its fatigue curve referred above and analyses the fatigue effect of longmen grottoes. finally, it is pointed out that after longmen grottoes have being suffered weathering and water - erosion more than 1500 years, the vibration environment is becoming an crucial factor leads to fatigue effect, especially in those weak surface carvings just like the crossings of several rifts, serious weathering places, etc
借鑒材料力學中金屬疲勞破壞的研究手段，在誤差允許范圍內用大理巖疲勞曲線推導出門石窟石灰巖疲勞曲線。通過對石窟實際振動環境中典型要素的抽取和振動試驗，將試驗結果與疲勞曲線進行對比，分析了門石窟的疲勞破壞效應。文章指出，在經歷了1500多年的風化和流水溶蝕后，振動環境已成為導致門石窟某些薄弱點如多條裂隙交叉點嚴重風化酥解的壁面雕刻品等產生疲勞破壞的重要誘發因素。 -
8 disaster factors of soil erosion have been defined : surface material, landform and slope gradient, cover - degree, topographic, 30min rainfall intensity, engineering measure grade of conservation of water - soil, irregular subsidence and volume weight
確定了土壤水性的8個致災因子: 30而n暴雨強度、地表物質、地形坡度、植被搜蓋度、植被類型、工程水土保持措施等級、容重和非均勻沉降 -
Based on gas - solid two - phase flow theory and the phenomena and data results of experiments on erosion wear ceramic nozzles, the behavior arid influence factors of ceramic nozzles ' erosion wear were investigated in order to provide theory support for anti - erosion design of ceramic nozzles
摘要以氣固兩相流理論為基礎，結合陶瓷噴砂嘴沖蝕磨損實驗中得到的現象和數據結果，研究了噴砂嘴沖蝕磨損行為和影響因素，為陶瓷噴砂嘴的耐磨結構設計提供了動力學理論支持。 -
Absolute amounts of soil erosion is not large for the falling gradient in black soil region, but the nutrient is high in erosion soil, the nutrient of erosion soil and runoff is high, which leads to soil fertility degeneration, while n and p nutrient pour into water with surface runoff, it leads to water nutrient enrichment and pollution, and becomes one of confined factors of water nutrient enrichment
吉林農業大學碩士學位論文黑土地表徑流氮磷養分特徵及其與肥力退化的關系由於黑土耕作區坡度平緩，土壤侵蝕的絕對量並不很大，但由於土壤中攜帶的養分高，養分流失的較多，流失的養分將引起肥力的退化，而且氮磷等養分隨地表徑流流出匯入各種水體，引起水體富營養化和污染，成為水體富營養化的限制因子。 -
In newly - constructed stage, early stage and later stage of reclamation, the degree of erosion and the space - time characteristics of influence factors have been analyzed and compared by the evaluation index and model
運用評價指標和模型分析了排土場未復墾時期、復墾初期、復墾後期的土壤水蝕程度及影響因子的時空變化特徵 -
Through analyzing the surface microstructure of counter - cavitational material and the factors of affecting cavitation, on the basis of material mechanical properties, metallurgical parameters and fluid mechanical conditions, the paper presents cavitation erosion mechanism in multitude fluid medium, whereby offers references for calculating erosion rate
通過對抗氣蝕材料表面顯微結構和影響氣蝕因素的分析，從材料的機械性能、冶金學參數和流體力學條件出發，綜述多項流體介質作用下氣蝕磨蝕的機理，從而為計算氣蝕磨蝕速率提供參考 -
Through rainfall simulating under laboratory, and making slice of sampling, the project researched in the soil crust development, and studied the dynamic rule of erosion factors which were raining and soil erosion factors during soil crust development. in the same time, the research was to find the critical condition of all factors in the process of soil crusting, and to filter the critical factor that could affect soil surface crust
本文採用人工模擬降雨方法，通過采樣製作土壤切片，觀察分析表土結皮在不同條件下發育的微形態特徵，研究降雨、土壤等侵蝕產沙因子在表土結皮發育過程中的動態響應規律，界定表土結皮發育過程中各因子的臨界條件，篩選有關土壤顆粒組成、結構特徵等物理化學性質對表土結皮形成影響的關鍵因子。 -
The outcomes show that cultivation measures have the reduction functions of run - off energy and slope sediment production, of which, the action of contour cropping is the maximum and the action is reduced along with the increase of rainfall intensity and surface gradient ; cultivation measures also have a certain correlation on the reduction functions of run - off energy and erosion, in the meanwhile of slope sediment production, it is effected by the factors of soil erosion resistance and scouring resistance
結果表明：耕作措施對徑流能量及坡面產沙均具有削減作用，其中等高耕作的作用最大，隨雨強和地面坡度的增大其作用減弱；耕作措施對徑流能量的削減作用與減蝕作用之間具有一定的相關關系，但坡面產沙同時受土壤抗蝕、抗沖性等因素的影響。 -
( 2 ) resource and environment are on the level from initial to basic development, the restrictive factors of resource and environm ent are water loss and soil erosion, the decrease of cultivated
水土流失、耕地面積的減少等對資源環境保護的持續發展起主導作用；經濟可行性從初步可持續發展到基本可持續階段。 -
In the past decades, some factors of over - loaded caarrying capacity of population, backward modes of production, backward life style and ecological fragility in multi - ethnic areas of the upper reaches of minjing river resulted in ecological degradation, for instance, vegetation, grass degradation and soli erosion and natural calamities occurred frequently
摘要在過去幾十年，由於人口超過環境承載量，人們生產方式和生活方式落後，以及生態脆弱等諸多因素，導致岷江上遊民族地區生態環境退化，如植被，草場，土地的退化及自然災害頻繁發生等。 -
Non - point pollution source model is the important means of simulating non - point pollution, and soil erosion model is the foundation of non - point pollution model, and the affecting factors of soil erosion is the foundation of soil erosion model
摘要非點源污染模型是進行非點源污染模擬研究的重要手段，而土壤侵蝕模型是非點源污染模型的基礎，土壤侵蝕因子的研究是土壤侵蝕模型的重要基礎。 -
The aim of this research was to confirm the rule of soil crusting and the factors affecting the process of soil crusting, and to analyze the relationship between the development of soil crust and rainfall splash erosion, furthermore to study the effect of soil crust on the process of erosion. we hope to provide scientific bases for soil erosion
本研究的主要目的是探明表土結皮的發育規律、影響因子，並且分析表土結皮的形成與土壤濺蝕的關系，以及表土結皮的發育與坡面侵蝕過程的交互動態影響作用，最終為坡面侵蝕研究提供科學依據。
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