防护林科技
防護林科技
방호림과기
PROTECTION FOREST SCIENCE AND TECHNOLOGY
2015年
8期
1-3
,共3页
沙粒%尘粒%风力%防治对策
沙粒%塵粒%風力%防治對策
사립%진립%풍력%방치대책
sand%dust%wind force%prevention measures
“沙尘暴”已经成为近年来公众常见的词汇。到底什么是“沙尘暴”，它与“沙暴”和“尘暴”有何区别和联系？通过对沙粒与尘粒的粒径分析、比较，结合风力作用下沙粒和尘粒的运动特点，辨识了沙暴、尘暴和沙尘暴的区别与联系。结果表明：沙暴指粒级0.05~2 mm的沙粒形成的风暴，尘暴指粒级0.002~0.0625 mm 尘粒形成的风暴，沙尘暴指粒级0.002~2 mm沙粒和尘粒形成的风暴；它们发生的机制具有相似性，但运移形式和影响范围不同，因而其危害方式、程度和防治对策亦有所差异。由于沙暴(沙物质源中不可能没有小于0.05 mm 的颗粒物)、尘暴和沙尘暴在理论上是按粒径大小来区分，只有专门监测机构才可以严格将三者分开，因此，对于普通公众，在不能明确是沙暴还是尘暴或是沙尘暴时，可统一称沙尘暴。
“沙塵暴”已經成為近年來公衆常見的詞彙。到底什麽是“沙塵暴”，它與“沙暴”和“塵暴”有何區彆和聯繫？通過對沙粒與塵粒的粒徑分析、比較，結閤風力作用下沙粒和塵粒的運動特點，辨識瞭沙暴、塵暴和沙塵暴的區彆與聯繫。結果錶明：沙暴指粒級0.05~2 mm的沙粒形成的風暴，塵暴指粒級0.002~0.0625 mm 塵粒形成的風暴，沙塵暴指粒級0.002~2 mm沙粒和塵粒形成的風暴；它們髮生的機製具有相似性，但運移形式和影響範圍不同，因而其危害方式、程度和防治對策亦有所差異。由于沙暴(沙物質源中不可能沒有小于0.05 mm 的顆粒物)、塵暴和沙塵暴在理論上是按粒徑大小來區分，隻有專門鑑測機構纔可以嚴格將三者分開，因此，對于普通公衆，在不能明確是沙暴還是塵暴或是沙塵暴時，可統一稱沙塵暴。
“사진폭”이경성위근년래공음상견적사회。도저십요시“사진폭”，타여“사폭”화“진폭”유하구별화련계？통과대사립여진립적립경분석、비교，결합풍력작용하사립화진립적운동특점，변식료사폭、진폭화사진폭적구별여련계。결과표명：사폭지립급0.05~2 mm적사립형성적풍폭，진폭지립급0.002~0.0625 mm 진립형성적풍폭，사진폭지립급0.002~2 mm사립화진립형성적풍폭；타문발생적궤제구유상사성，단운이형식화영향범위불동，인이기위해방식、정도화방치대책역유소차이。유우사폭(사물질원중불가능몰유소우0.05 mm 적과립물)、진폭화사진폭재이론상시안립경대소래구분，지유전문감측궤구재가이엄격장삼자분개，인차，대우보통공음，재불능명학시사폭환시진폭혹시사진폭시，가통일칭사진폭。
Sand-dust storm has become a public common vocabulary in recent years.What is the sand-dust storm and how it is different from sand storm and dust storm? Combining with movement characteristics of sand & dust under wind force,particles diameter between sand & dust were analyzed.Result shows that sand storm is formed by particles diameter of sand from 0.05 mm to 2 mm,dust storm is formed by particles diameter of dust from 0.002 mm to 0.062 5 mm,and sand-dust storm is formed by particles diameter of sand & dust from 0.002 mm to 2 mm,respectively.Their mechanisms are similar,but the manner of movement and range of influence are differ-ent.Therefore,their damage patterns,damage degree & prevention measures are different.Sand storm (Sand ma-terial can not be without particulate matter less than 0.05 mm),dust storm and sand-dust storm were theoretically distinguished based on particles diameter,only special monitoring organization can distinguish them strictly.Ac-cordingly,for the general public,when they did not determine sand storm,dust storm or sand-dust storm,they can call unified sand-dust storm.
