【正文】
correlation between major soil types and the Koppen climatic classification systems major climate regional and local scales, climate bees less important in soil , Pedogenesis is more influenced by factors like parent material, topography, vegetation, and two most important climatic variables influencing soil formation are temperature arid has direct influence on the weathering of bedrock to produce mineral of bedrock weathering generally increase with higher also influences the activity of soil microorganisms, the frequency and magnitude of soil chemical reactions, and the rate of plant growth, moisture levels in most soils are primarily controlled by the addition of water via precipitation minus the losses due to additions of water from precipitation surpass losses from evapotranspiration, moisture levels in a soil tend to be the water loss due to evapotranspiration exceeds inputs from precipitation, moisture levels in a soil tend to be moisture availability in a soil promotes the weathering, of bedrock and sediments, chemical reactions, and plant availability of moisture also has an influence on soil pH and the deposition of organic 。溫度和濕度是影響土壤形成的兩個重要的變量。大多數(shù)的土壤濕度是由降水減去蒸發(fā)作用控制的。微生物也會影響土壤的PH和有機物的分解。通過落葉和分解過程,微生物把腐殖質(zhì)和營養(yǎng)成分帶給土壤,也因此影響了土壤的結(jié)構(gòu)和肥力。外來的沉積物形成的成土作用通常都比較快,因為風(fēng)化母質(zhì)需要很長一段時間。同時,大氣中包含水蒸氣的含量也影響了降水,水蒸氣的含量是由大氣溫度控制的。the wind speed immediately above the surface。蒸騰作用是水通過植物進(jìn)入大氣。農(nóng)作物生長是供水的過程。Infiltration is the movement of water from precipitation into the soil varies both spatially and temporally due to a number of environmental a rain, infiltration can create a condition where the soil is pletely full of condition is, however, only shortlived as a portion of this water quickly drains(gravitational water)via the force exerted on the water by portion that remains is called the field the soil, field capacity represents a film of water coating all individual soil particles to a thickness of soil water from to mm(known as capillary water)can be removed from the soil through the processes of evaporation and of these processes operate at the action moves water from one area in the soil to replace losses in another area(biggest losses tend to be at the surface because of plant consumption and evaporation).This movement of water by capillary action generally creates a homogeneous concentration of water throughout the soil of water stop when the film of water around soil particles reaches held from the surface of the soil particles to mm is essentially immobile and can only be pletely removed with high temperatures(greater than 100 degrees Celsius).Within the soil system, several different forces influence the storage of 。留下的那一部分雨水被稱為土地含水能力。這種毛細(xì)作用可以報證土壤內(nèi)的水的濃度是均勻的。Population Structure / Population PyramidsThe population structure for an area shows the number of males and females within different age groups in the information is displayed as an agesex or population pyramids of LEDCs typically have a wide base and a narrow represents a high birth rate and high death pyramids of MEDCs typically have a roughly equal distribution of population throughout the age top obviously gets narrower as a result of pyramids for every country in the world can be found pyramids are used to show the structure of the population according to age and 。發(fā)達(dá)國家的人口金字塔在不同年齡段大概是均勻分布的。56頁The increase of greenhouse gases are the primary causes of the humaninduced ponent of of burning of fossil fuels, land clearing and agriculture, the amount of CO2 and other greenhouse gases in the atmosphere have increased by more than a this large have historically taken thousands of years, but are now happening over the course of 。隨著冰蓋和冰川的融化。這正是上海現(xiàn)在發(fā)生的,也可能是幾年以后上海出現(xiàn)的景象。ll see from the list ,是整個國家的焦點。但是這個定義沒有體現(xiàn)從城市規(guī)模的角度分析,排名前兩位的城市也是不成比例的,所以并不被認(rèn)可。甚至村莊也可以用首位城市法則來分析。改進(jìn)農(nóng)業(yè)結(jié)構(gòu)看起來是和保留農(nóng)村地區(qū)社會生存能力一樣的事情。Such agricultural improvements are still essential but rural space is now no longer regarded as one of agricultural production of rural development have bee much broader and have expanded to include increased environmental awareness and a wide range of nonagricultural emphasis of land consolidation projects has shifted from a focus on restructuring agriculture to one of achieving more efficient multiple use of rural space by balancing the interests of agriculture, landscape, nature conservation, recreation and transportation, especially when land is required for the construction of major ,但是現(xiàn)在農(nóng)村地區(qū)不再僅僅是農(nóng)業(yè)生產(chǎn)的區(qū)域了。修路需要符合地形。these subtracted amounts are called most allinclusive package tours, about 80% of travelers39。此外,大量的達(dá)到目標(biāo)水平的收入一般會經(jīng)過滲漏再次離開當(dāng)?shù)亍?06頁Storm structureThe process by which a disturbance forms and subsequently strengthens into a hurricane depends on at least three waters and moisture are mentioned third condition is a wind pattern near the ocean surface that spirals air of thunderstorms form, allowing the air to warm further and rise higher into the the winds at these higher levels are relatively light, this structure can remain intact and allow for additional 。第二篇:水利專業(yè)英語翻譯部分Lesson 1 importance of water 水的重要性Water is best known and most abundant of all chemical pounds occurring in relatively pure form on the earth’s , the most abundant chemical element, is present in bination with hydrogen to the extent of 89 percent in covers about three fourths of the earth39。地球的兩極被大量的冰所覆蓋,%~2%的水蒸氣。沒有水就沒有生命?!游锖图仪?,如果用流動的水來喂養(yǎng),那么每磅飼料和每個勞動小時會生產(chǎn)出更多的肉、奶和蛋。在制造、發(fā)電、運輸、娛樂以及其他許多行業(yè),水都起著很重要的作用。因此,人人有責(zé)對水采取保護(hù)措施和衛(wèi)生措施,這對于我們?nèi)祟惖奈磥硎菢O端重要的。在干旱地區(qū),蒸發(fā)可以消耗掉大量的水庫存水。Transpiration is essentially the evaporation of water from the leaves of of transpiration will, therefore, be about the same as rates of evaporation from a free water surface if the supply of water to the plant is not free water evaporation may, therefore, be assumed to indicate the potential evapotranspiration from a vegetated soil ,因此,如果植物供水不受限制,蒸騰速率大約等于自由水面的蒸發(fā)率。對于供水受限制和季節(jié)性(降雨)的地方,植物根系的深度是很重要的。Evapotranspiration, sometimes called consumptive use or total evaporation d