长江流域资源与环境 >> 2020, Vol. 29 >> Issue (2): 442-448.doi: 10.11870/cjlyzyyhj202002017

• 生态环境 • 上一篇    下一篇

“城-郊-乡”土壤环境磁学特征及其空间分布研究

李琼琼1,柳云龙1,2*
  

  1. (1.上海师范大学城市环境与地理科学学院, 上海 200234;2.上海师范大学地理系, 上海 200234)
  • 出版日期:2020-02-20 发布日期:2020-02-20

Magnetic Properties and Its Spatial Distribution in “Urban-to-Rural”

LI Qiong-qiong1, LIU Yun-long1,2   

  1. (1.School of Environment and Geographical Sciences, Shanghai Normal University,Shanghai 200234,China; 2.Geography Department, Shanghai Normal University,Shanghai 200234,China)

  • Online:2020-02-20 Published:2020-02-20

摘要: 为探讨“城-郊-乡”梯度上城市土壤磁性特征及其空间分异规律,对上海市徐汇、闵行、奉贤3区进行系统的磁学测定分析,结果表明研究区土壤磁性明显增强且处于较高污染水平,受外源输入影响较大。土壤磁性主要受低矫顽力软磁性的亚铁磁性矿物控制,磁性矿物颗粒较粗,以多畴MD和粗粒SSD为主。不同磁学参数χlf、SIRM、χarm、HIRM呈现相似的空间变化特征,出现明显高值区,分别位于徐汇区北部、闵行区东南和西南以及奉贤区北部和南部。磁性增强高值点均位于工业区,城市土壤磁性增强主要受人类活动中的现代工业活动影响,并以污染型企业为源点使污染范围向外扩散。

Abstract: In order to explore the environmental magnetic properties and their spatial distribution in “urban-to-rural”, this study choose Xuhui, Minhang and Fengxian districts in Shanghai to systematic magnetic analysis. The results show that the soil magnetic enhancement is obvious and is caused by human activities. Soil magnetic properties are mainly controlled by ferrimagnetic minerals with low coercivity and soft magnetic properties. Magnetic mineral particles are relatively coarser, mainly multi-domain (MD) and stable single domain (SSD). χlf, SIRM, χarm, and HIRM showed the similar spatial variation characteristics, the high value area is located in the north of Xuhui District, southeast and southwest of Minhang District, and north and south of Fengxian District. The magnetically enhanced high value points are located in the industrial area. The distribution of the magnetic susceptibility is basically consistent with the layout of the enterprise, and the pollution-type enterprises are used as the source to spread the pollution.

No related articles found!
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
[1] 曹银贵,王 静,程 烨,刘爱霞,许 宁,郝 银,饶彩霞. 三峡库区土地利用变化与影响因子分析[J]. 长江流域资源与环境, 2007, 16(6): 748 .
[2] 刘传江,朱劲松. 三峡库区土地资源承载力现状与可持续发展对策[J]. 长江流域资源与环境, 2008, 17(4): 522 .
[3] 龙开胜, 陈利根, 李明艳. 工业化、城市化对耕地数量变化影响差异分析[J]. 长江流域资源与环境, 2008, 17(4): 579 .
[4] 班军梅,缪启龙,李 雄. 西南地区近50年来气温变化特征研究[J]. 长江流域资源与环境, 2006, 15(3): 346 -351 .
[5] 谭支良,王久荣,潘亚飞,汤少勋,单计光,黄瑞林. 洞庭湖退田还湖区畜牧业资源与环境评估[J]. 长江流域资源与环境, 2005, 14(3): 327 -332 .
[6] 梁流涛, 曲福田, 王春华. 基于DEA方法的耕地利用效率分析[J]. 长江流域资源与环境, 2008, 17(2): 242 .
[7] 陈 华,郭生练,郭海晋,徐高洪,徐德龙. 汉江流域1951~2003年降水气温时空变化趋势分析[J]. 长江流域资源与环境, 2006, 15(3): 340 -345 .
[8] 张镀光,王克林,陈洪松,李 新,王书功. 基于DEM的地形指数提取方法及应用[J]. 长江流域资源与环境, 2005, 14(6): 715 -719 .
[9] 聂 艳,周 勇,陈 平,肖 辉. 基于GIS的耕地定级方法及其应用[J]. 长江流域资源与环境, 2005, 14(3): 342 -347 .
[10] 段学花 王兆印 余国安. 以底栖动物为指示物种对长江流域水生态进行评价[J]. 长江流域资源与环境, 2009, 18(3): 241 -247 .