砂質粘壤土 的英文怎麼說
中文拼音 [shāzhíniánrǎngtǔ]
砂質粘壤土
英文
sand clay loam-
The results indicate that : 1. the main physical and chemical characteristics vary regularly : with rising of the altitude, there is a transition from silt > sand > clay to sand > silt > clay in the mechanical composition ; the argic horizon emerges below the altitude of 1600 meters ; the content of organic matter is enrichment, the content of organic carbon of epipedon is higher than 20 g / kg, while the content of organic carbon increases with increasing of altitude, and in the altitude of 3500 - 3700meters, the soils under the meadow have the maximum content organic carbon ; the soils appear acid - slightly acid reaction, the ph decreases appreciably and acid strengthen with increasing of altitude ; the soils higher than the altitude of 2500 meters are base unsaturated, indicating the soil leaching is strong, the ph and bs are distinct plus correlated ; the contents of sio2, al2o3, and fe2o3 of the soil body and clay are all relatively stabilization ; in the soil body, the content of sio2 is much high and cao is very little, the total contents of sio2, a12o3 and fe2o3 occupy 92 % of the mineral parts, the sequence of mineral elements is : sio2 > al2o3 > fe2o3 > k2o > mgo > cao > tio2 > mno
研究結果表明: 1太白山南坡土壤的主要理化性質隨海拔高度的上升呈有規律的變化:隨海拔高度上升,機械組成由粉粒砂粒粘粒逐漸過渡到砂粒粉粒粘粒,海拔1600m以下出現粘化層;土壤有機質豐富,表層有機碳含量一般在20g kg以上,有機碳含量隨海拔高度升高而相應增加,海拔3500 3700m的灌叢草甸植被下有機碳含量最高;土壤呈酸性或微酸性,並隨海拔上升, ph值略微降低,酸性增強,海拔2700m以上的土壤多呈鹽基不飽和狀態,表明土壤淋溶作用較強, ph值和鹽基飽和度呈極顯著正相關;土體與粘粒中的sio _ 2 、 al _ 2o _ 3 、 fe _ 2o _ 3含量相對比較穩定,土體中sio _ 2含量較高, cao含量較少, sio _ 2 、 al _ 2o _ 3和fe _ 2o _ 3含量之和約占土壤礦質部分的92 ,礦質元素含量的順序依次為: sio _ 2 al _ 2o _ 3 fe _ 2o _ 3 k _ 2o mgo cao tio _ 2 mno 。From textural point of view, about 30 % soils are clayey, 35 % loamy and 10 % sandy while the remaining have variable texture
從質地上看,約30 %的土壤是粘土, 35 %是壤土, 10 %是砂土,其餘土壤質地龐雜。The soils ( paleudults ) consist predominantly of light brown fine loamy sand to fine sandy loam changing with depth into a brown sandy clay loam and sandy clay with red mottles
土壤(強發育濕潤老成土)主要為淡棕色細壤質砂土到細砂質壤土,隨著深度增加,土壤變為棕色砂質粘壤土和帶有紅色斑點的砂質粘土。The organic matter, total n, hydrolytic n were increased, then reduced with the increase of abandoned time. the loss of organic c got up to 59. 4 % in abandoned land. in 0 - 20cm, the sand content of 0. 25 - 0. 05mm was increased gradually, the average content of sand in the abandoned land was up to 76. 84 %, the sand contents of silt and sand was gradually reduced, the soil mechanic compose became coarse
隨撂荒年限的增加,土壤有機質、全氮、堿解氮等主要養分均表現出先降低后增加的趨勢;撂荒地有機碳的損失平均達到59 . 4 ;在撂荒地表面0 - 20cm范圍內, 0 . 25 - 0 . 05mm粒徑的砂粒含量逐漸增加,各撂荒地砂粒平均含量達76 . 84 ,粉粒和粘粒含量逐漸降低,土壤機械組成出現粗化現象。With increase of artificial forest age, the content of soil organic matter decreased sharply. and soil physical, chemical and biological properties of forest became worsen. from soil physical properties analysis, soil silt, clay, physical clay, aggregate degree and structure coefficient in topsoil increased with increase of artificial forest age and soil sand deceased
在土壤物理性質方面,隨著人工雲杉林齡的增加,土壤表層粉粒、粘粒、物理性粘粒、團聚度和結構系數降低,砂粒含量增高,土壤飽和持水量、毛管持水量及總孔隙和毛管孔隙在人工雲杉演替過程中表現出「 u 」型變化。( 3 ) the definition of soil series applied the method of direct nomenclature ( eg. qingjiang series ), searches of soil series was the order : soil structure - the texture of hydragric epipedon - the proportion of clay and salt ( eg. apl - ap2 - g - clay loam - 0. 54 ), 10 typical soil sections were classified 10 soil series ( eg. qingjiang series beihe series ) and belonged to 5 subgroups and 4 groups of hydragric anthrosols
( 3 )土系採用直接命名法(如:清江系) ,其檢索採取剖面構型+表層優勢質地+粘砂比的性態檢索順序(如: ap1 - ap2 - c +粘壤土+ 0 . 35 ) ,被研究的10個典型土壤剖面被劃分為清江系、北河系等10個土系,分別隸屬於5個水耕人為土亞類、 4個水耕人為土土類。Grain - size accumulation percentage of the aeolian sands in the past 150 ka in milanggouwan section is mainly characterized by the aeolian palaeo - mobile dune sands, which are composed of majority fine sands and minority very fine sands. there is n ' t almost any silt and clay. those of the fluvial facies, especially the lacustrine facies and palaeosols, are mainly composed of very fine sands and also contain some quantities of silt and clay
米浪溝灣剖面150kabp以來風成砂的粒度累積百分含量以古流動砂丘砂物質為主,其中以細砂含量最高,極細砂為次,幾乎不含粉砂與粘土;河流相、特別是湖沼相與古土壤以極細砂含量占優勢,且具一定含量的粉砂和粘土。Evaporation varies from evaporation capability, embedded depth of groundwater is more easy, the effect is more obvious ; evaporation capacity decreases if embedded depth of groundwater become deeply, and close to zero under the some depth ; evaporation capacity of different soil texture is different. at ordinary situation, if embedded depth of groundwater is easy, evaporation capacity of the wide and grit soil is powerful ; if embedded depth of groundwater is deep, evaporation capacity of the slender and viscosity soil is powerful
潛水蒸發隨大氣蒸發能力的變化而變化,且潛水埋深越淺,受其影響越明顯:潛水蒸發隨潛水埋深增加而減少,在某一埋深以下潛水蒸發接近於零:不同土質其潛水蒸發量不同,一般情況下,在潛水埋深較小時,土質較粗、偏砂性土壤潛水蒸發較大;當潛水埋深較大時,土質較細、偏粘性土壤的潛水蒸發較大。Sandy clay loam
砂質粘壤土Vegetation restoration also resulted in the changes of soil physical and chemical properties, i. e., the contents of organic matter, alkali - hydro nitrogen, rapidly - available potassium and the contents of fine sand, very fine sand and clay were increased significantly, while ph and the content of rapidly - available phosphorus were decreased
植被的恢復使土壤理化性質發生了變化,與恢復前相比土壤中有機質、堿解氮、速效鉀以及細砂、極細砂、粉砂、粘粒含量顯著增加, ph值和速效磷含量降低。As for h2 and h3 derived from quaternary deposits, the textures of soils would become heavy because of soil erosion, whereas t2 and t3 of red soil of granite became sandification
土壤侵蝕會引起土壤機械組成的改變。對于第四紀粘土發育的紅壤,土壤質地粘重,而花崗巖紅壤,侵蝕使其趨向砂質化。分享友人