陕西省泾惠渠灌区土壤重金属环境质量现状及评价

易秀; 谷晓静; 侯燕卿; 刘秀花; 谢娟

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陕西省泾惠渠灌区土壤重金属环境质量现状及评价

试验研究

- 陕西省泾惠渠灌区土壤重金属环境质量现状及评价
- Current Situation and Evaluation of Soil Environmental Quality for Heavy Metals in Jinghuiqu Irrigation District of Shaanxi Province
- 水土保持通报 2010年29卷第3期页码：153-157
- 作者机构：
  
  1. 长安大学环境科学与工程学院,陕西,西安,710054
  2. 西安市环境保护科学研究院,陕西,西安,710002
- 作者简介：
- 基金信息：
  
  高等学校学科创新引智计划项目“干旱半干旱地区人类活动水文生态效应及水安全问题研究”(B08039);陕西省水利厅重点项目“提高大型灌区水资源利用效益促进社会主义新农村建设的试验示范”
- DOI：
  中图分类号：
- 纸质出版：2010
- 稿件说明：
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易秀, 谷晓静, 侯燕卿, 等. 陕西省泾惠渠灌区土壤重金属环境质量现状及评价[J]. 水土保持通报, 2010,29(3):153-157.

YI Xiu, GU Xiaojing, HOU Yanqing, et al. Current Situation and Evaluation of Soil Environmental Quality for Heavy Metals in Jinghuiqu Irrigation District of Shaanxi Province[J]. Bulletin of Soiland Water Conservation, 2010, 29(3): 153-157.
易秀, 谷晓静, 侯燕卿, 等. 陕西省泾惠渠灌区土壤重金属环境质量现状及评价[J]. 水土保持通报, 2010,29(3):153-157. DOI：

YI Xiu, GU Xiaojing, HOU Yanqing, et al. Current Situation and Evaluation of Soil Environmental Quality for Heavy Metals in Jinghuiqu Irrigation District of Shaanxi Province[J]. Bulletin of Soiland Water Conservation, 2010, 29(3): 153-157. DOI：

摘要

在调查收集泾惠渠灌区农业生态环境状况资料的基础上

通过采集土壤样品

分析了灌区土壤中重金属含量

并通过单因子指数法对其土壤重金属环境质量现状作出了评价。结果表明

灌区土壤中Pb

Zn平均值与陕西省土壤背景值的平均值相比

分别超出46.0%

105.7%

90.6%

47.8%

12.6%和178.6%

只有Cr基本接近;从各元素的变异系数看

Cd的最大

为1.547

As的最小

为0.105;土壤中Pb

Zn以及Cr相互之间的相关性都不显著;重金属元素与肥力指标的相关性不具有任何规律性;单因子评价结果表明

灌区土壤中Zn污染最严重

平均单因子污染指数1.48

为轻度污染。As的平均单因子污染指数1.11

也达到轻度污染。Cd的平均评价结果为非污染。灌区土壤中Cr

Hg含量基本未达到土壤污染积累的起始值。

Abstract

Based on investigating and collecting information on the present situation of agro-ecological environment in Jing huiqu irrigation district of Shaanxi Province

soil samples are collected and the contents of heavy metals are analyzed. Meanwhile

soil environmental quality for heavy metals is evaluated by single factor index. Results show the average contents of Pb

and Zn in soils ar e 46. 0%

105. 7%

90. 6%

47. 8%

12. 6%

and 178. 6%

respectively

higher than soil backg round values of Shaanxi Province.Only the content of Cr is similar basically. The variation coefficient of Cd is the biggest ( 1. 547) and that of A s is the smallest ( 0. 105) . There are no significant correlations among Pb

and Cr. The correlation between heavy metals and soil fertility index is not significant . The pollution degree of Zn is the highest and the average single factor index is 1. 48

which means pollution degree is at a light level.T he average single factor index of As is 1. 11 and it is also at a light level. The average single factor index of Cd is at no pollution level. The content s of Cr

and Hg are lower than the initial values of soil pollution accumulation basically .

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