环境科学导刊
環境科學導刊
배경과학도간
ENVIRONMENTAL SCIENCE SURVEY
2014年
5期
10-13
,共4页
土壤%pH%空间分布%重金属%关系%东洞庭湖
土壤%pH%空間分佈%重金屬%關繫%東洞庭湖
토양%pH%공간분포%중금속%관계%동동정호
Soil%pH%spatial distribution%heavy metal%relationship%EasternDongting Lake
用统计学方法研究了东洞庭湖湖滨带土壤pH 值的分布特征及与重金属污染特征关系。研究表明：在东洞庭湖湖滨带67个采样点中，7.46％的土样为酸性土壤，多分布在居民地和旅游区；13.43％的土样为中性土壤，多分布在湿地保护区；79.10％的土壤为碱性土壤，主要分布在农业区和工业区；无强酸性和强碱性样品。不同土壤pH范围的重金属平均含量不同，随着土壤pH值由酸性、中性到碱性的升高，Hg、Cd、Pb、Zn含量先降低后增加；As、Cu、Ni、Cr含量先增加后降低。
用統計學方法研究瞭東洞庭湖湖濱帶土壤pH 值的分佈特徵及與重金屬汙染特徵關繫。研究錶明：在東洞庭湖湖濱帶67箇採樣點中，7.46％的土樣為痠性土壤，多分佈在居民地和旅遊區；13.43％的土樣為中性土壤，多分佈在濕地保護區；79.10％的土壤為堿性土壤，主要分佈在農業區和工業區；無彊痠性和彊堿性樣品。不同土壤pH範圍的重金屬平均含量不同，隨著土壤pH值由痠性、中性到堿性的升高，Hg、Cd、Pb、Zn含量先降低後增加；As、Cu、Ni、Cr含量先增加後降低。
용통계학방법연구료동동정호호빈대토양pH 치적분포특정급여중금속오염특정관계。연구표명：재동동정호호빈대67개채양점중，7.46％적토양위산성토양，다분포재거민지화여유구；13.43％적토양위중성토양，다분포재습지보호구；79.10％적토양위감성토양，주요분포재농업구화공업구；무강산성화강감성양품。불동토양pH범위적중금속평균함량불동，수착토양pH치유산성、중성도감성적승고，Hg、Cd、Pb、Zn함량선강저후증가；As、Cu、Ni、Cr함량선증가후강저。
The relationship between the distribution of pH and the content of heavy metal in the soil of the eastern-Dongting Lakeside belt was studied using statistical methods.Sixty-seven samples were monitored.Around 7 per-centages of samples were acid distributing in residential area and tourism area.About 13 percentages of samples were neutral locating in wetland reserves.Nearly 80 percentages of samples were alkaline scattering in agricultural and in-dustrial area.The average content of heavy metals was various in different categories of soils with different pH value. The content of Hg,Cd,Pb,Zn reduced first and increased when the pH value became higher and higher from the a-cidity to alkaline.However,the content of As,Cu,Ni,and Cr showed an opposite change from high to low.
