dust loess 中文意思是什麼
dust loess
解釋
粉黃土-
Dust aerosols in qingdao come from three area : the desert in west of inner mongolia and the dene in east of inner mongolia together with loess altiplano
沙塵粒子的來源主要有三個地方：一是內蒙西部沙漠地區；二是內蒙東部沙地；三是黃土高原。 -
The holocene loess - soil sequence in the loess plateau constitutes an excellent record of evolution of soil formation, monsoonal climate, aeolian dust accumulation and influences of arable farming of over 8000 years
長期農牧業的發展，使得天然植被在大多數地方已蕩然無存，大片的林地被開墾為農田或被開辟為城市用地。 -
( 2 ) there is stage of soil formation from the evolution of pedogenic environment in the weihe valley during holocene. soil formation shows the law of evolving from warm and wet strong soil formation period to cold and dry dust deposition period ( weak soil formation period ) and to warm and wet strong soil formation period again. the loess - soil sequence is a compound soil sectional system of different kinds of soil evolution under different bio - environment and pedogenic processes
（ 2 ）通過對全新世渭河流域成壤環境演變問題的討論，揭示了全新世渭河流域土壤的發育具有階段性，表現為由溫濕的強成壤期向冷乾的沉積期（弱成壤期）演變、再向溫濕的強成壤期演變的規律；黃土一古土壤序列是不同生物氣候環境下、不同成壤過程發育的不同土壤類型演替而形成的復合型土壤剖面體系；而且由於冬夏季風環流及其環境效應在空間上的差異，使得復合型土壤剖面體系也存在著南北差異。 -
As the climate has become dry, and dust storms and dust - fall occurred frequently in whole weihe valley, the recent loess ( l0 ) has beg un to accumulate and gradually covered the mid - holocene soil ( s0 )
在3100abp ，由於季風格局的突變，整個渭河流域進入了一個相對乾旱缺雨、成壤環境的惡化時期。 -
Atmospheric air - test dust standard sample - loess dust
大氣試驗粉塵標準樣品黃土塵 -
The substances making up of loess on the northern slop of tian shan mountains and iii basin are carried by dust storm not only in glacial but in inter - glacial
形成黃土的粉塵主要是以塵暴方式搬運，且冰期和間冰期都有塵暴堆積。 -
In fact the loess deposit is direct reason to form sand - dust storm, the " rain dust " is a kind of dust storm
事實上，黃土堆積即沙塵暴的直接產物， 「雨土」是其過程和現象。 -
However according to analyzing the history of loess in the quaternary period and records about " rain dust " in ancient literature, it can be found that sand - dust storm often happened in ancient time, even more acute than today
通過分析第四紀黃土生成歷史，以及古文獻中的大量關于「雨土」的記錄，可以發現其實沙塵暴古已有之，古代沙塵暴活動劇烈程度較今日有過之而無不及。
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