干旱区生态环境知识资源中心(Arid): 甘肃中部灌溉与雨养农业土壤中的重金属污染与来源

Arid

	甘肃中部灌溉与雨养农业土壤中的重金属污染与来源
其他题名	Heavy metal contamination and its sources in rainfed agricultural and irrigated agricultural soils from central Gansu province
	李裕; 张强; 勾昕; 王润元; 肖国举
来源期刊	兰州大学学报. 自然科学版
ISSN	0455-2059
出版年	2011
卷号	47 期号:6 页码:56-61
中文摘要	根据地处半干旱地区的甘肃中部的农业耕作方式,在四方吴村、甘沟村、沙家湾村、强湾村和大坝村,调查分析了农业土壤中Hg,Cu,Pb,Cr,As的质量分数,并利用主成分分析方法分析了这些金属和As的来源.结果发现污水灌溉的强湾和黄河灌溉的大坝村,农业土壤存在严重的Hg,As,Cu,Pb污染,尤其是污水灌溉的土壤中,Hg,As,Cu,Pb的质量分数分别是中国灰钙土壤背景值的64,18,3,2倍.但雨养农业土壤中除了Hg,Pb外,其他几种元素的质量分数均低于中国灰钙土壤中的背景值.采用Kaiser方差最大正交旋转的主成分分析结果显示灌溉因素、农业因素和人为因素共同导致了样品点土壤重金属元素和As质量分数的变化,而雨养农业土壤中Hg,Cu,Pb,As富集的主要因素是成土母质.雨养和灌溉农业土壤中的重金属来源显著不同.
英文摘要	Based on the cultivating mode in central Gansu province, a semiarid area of northwestern China, concentrations of copper (Cu), lead (Pb), chromium (Cr), mercury (Hg), and arsenic (As) were measured in agricultural soils collected from Sifangwu, Gangou, Shajiawan, Qiangwan and Daba villages. The principal component analysis (PCA) was used to assess the sources of these metals and As and the results showed that there were indeed serious pollution from Hg, As, Cu and Pb in agricultural soil in Qiangwan (sewage irrigation) and Daba (river irrigation) villages. Particularly in sewage irrigated soils, the Hg, As, Cu and Pb concentrations were respectively 64, 18, 3 and 2 times higher than their background values in Chinese grey calcareous soil. However, except Hg and Pb, the selected metals concentrations were lower than the background values in grey calcareous soil in the rainfed agricultural soils. The result of applying the varimax rotation with Kaiser Normalization showed that the irrigated factor, agricultural factor and anthropogenic factor have all contributed to the accumulated changes of metals and As in the sample sites. The main factor for the accumulation of Cu, Pb, Cr, Hg and As was lithological in rainfed agricultural areas. There was a striking dissimilarity in the origins of these metals in agricultural soil between the irrigated agriculture and arid agriculture.
中文关键词	雨养农业 ; 灌溉农业 ; 重金属 ; 主成分分析 ; 甘肃中部
英文关键词	rainfed agriculture irrigated agriculture heavy metal principal component analysis central Gansu province
类型	Article
语种	中文
国家	中国
收录类别	CSCD
WOS类目	Agriculture
WOS研究方向	Agriculture
CSCD记录号	CSCD:4409465
来源机构	宁夏大学 ; 中国气象局兰州干旱气象研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/226762
作者单位	李裕, 西北民族大学化工学院, 甘肃省干旱气候变化与减灾重点实验室, 兰州, 甘肃 730030, 中国.; 张强, 中国气象局兰州干旱气象研究所, 甘肃省干旱气候变化与减灾重点实验室, 兰州, 甘肃 730020, 中国.; 王润元, 中国气象局兰州干旱气象研究所, 甘肃省干旱气候变化与减灾重点实验室, 兰州, 甘肃 730020, 中国.; 勾昕, 中国科学院华南植物园, 广州, 广东 510650, 中国.; 肖国举, 宁夏大学新技术应用研究开发中心, 银川, 宁夏 750021, 中国.
推荐引用方式 GB/T 7714	李裕,张强,勾昕,等. 甘肃中部灌溉与雨养农业土壤中的重金属污染与来源[J]. 宁夏大学, 中国气象局兰州干旱气象研究所,2011,47(6):56-61.
APA	李裕,张强,勾昕,王润元,&肖国举.(2011).甘肃中部灌溉与雨养农业土壤中的重金属污染与来源.兰州大学学报. 自然科学版,47(6),56-61.
MLA	李裕,et al."甘肃中部灌溉与雨养农业土壤中的重金属污染与来源".兰州大学学报. 自然科学版 47.6(2011):56-61.