干旱区生态环境知识资源中心(Arid): Identifying the influence of urbanization on soil organic matter content and pH from soil magnetic characteristics

Arid

	Identifying the influence of urbanization on soil organic matter content and pH from soil magnetic characteristics
	Yang Han; Xiong Heigang; Chen Xuegang; Wang Yaqi; Zhang Fang
来源期刊	Journal of Arid Land
ISSN	1674-6767
出版年	2015
卷号	7 期号:6 页码:820-830
英文摘要	Soil magnetic characteristics are correlated with soil pH and organic matter content. Analyzing soil magnetic characteristics, organic matter content and pH can indirectly evaluate soil pollution caused by human activities. This study analyzed the soil magnetic characteristics, organic matter content and pH in surface soil samples from different land use types in Shihezi city, a newly and rapidly developing oasis city in Xinjiang of China. The aims of this study were to explore the possible relationships among the soil magnetic parameters and thereby improve the understanding of influence of urbanization on soil properties. Eighty surface soil samples at the depth of 0-10 cm were collected from 29 July to 4 August 2013. The results showed that the magnetic minerals in surface soil were dominated by ferromagnetic minerals. Spatially, the magnetic susceptibility (chi_(LF)), anhysteretic remanent magnetization susceptibility (chi_(ARM)), saturation isothermal remanent magnetization (SIRM) and "soft" isothermal remanent magnetization (SOFT) were found to be most dominant in the new northern urban area B (N-B), followed by built-up areas (U), suburban agricultural land (F), and then the new northern urban area A (N-A). The values of chi_(LF), chi_(ARM), SIRM and SOFT were higher in the areas with high intensities of human activities and around the main roads. Meanwhile, the property "hard" isothermal remanent magnetization (HIRM) followed the order of U>N-B>F>N-A. Built-up areas had an average pH value of 7.93, which was much higher than that in the new northern urban areas as well as in suburban agricultural land, due to the increased urban pollutant emissions. The average value of soil organic matter content in the whole study area was 34.69 g/kg, and the values in the new northern urban areas were much higher than those in the suburban agricultural land and built-up areas. For suburban agricultural land, soil organic matter content was significantly negatively correlated with chi_(LF), and had no correlation with other magnetic parameters, since the soil was frequently ploughed. In the new northern urban areas (N-A and N-B), there were significant positive correlations of soil organic matter contents with chi_(ARM), SIRM, SOFT and HIRM, because natural grasslands were not frequently turned over. For the built-up areas, soil organic matter contents were significantly positively correlated with chi_(LF), chi_(ARM), SIRM and SOFT, but not significantly correlated with frequency-dependent susceptibility (chiFD, expressed as a percentage) and HIRM, because the soil was not frequently turned over or influenced by human activities. The results showed that soil magnetic characteristics are related to the soil turnover time.
英文关键词	environmental magnetism surface soil pH soil organic matter content
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	CSCD
WOS研究方向	History
CSCD记录号	CSCD:5524751
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335551
作者单位	Yang Han, College of Resource and Environment Sciences, Xinjiang University, Urumqi, Xinjiang 830046, China.; Zhang Fang, College of Resource and Environment Sciences, Xinjiang University, Urumqi, Xinjiang 830046, China.; Xiong Heigang, College of Applied Arts and Science of Beijing Union University, Beijing 100191, China.; Chen Xuegang, College of Geographical Science and Tourism, Xinjiang Normal University, Urumqi, Xinjiang 830054, China.; Wang Yaqi, College of Geographical Science and Tourism, Xinjiang Normal University, Urumqi, Xinjiang 830054, China.
推荐引用方式 GB/T 7714	Yang Han,Xiong Heigang,Chen Xuegang,et al. Identifying the influence of urbanization on soil organic matter content and pH from soil magnetic characteristics[J],2015,7(6):820-830.
APA	Yang Han,Xiong Heigang,Chen Xuegang,Wang Yaqi,&Zhang Fang.(2015).Identifying the influence of urbanization on soil organic matter content and pH from soil magnetic characteristics.Journal of Arid Land,7(6),820-830.
MLA	Yang Han,et al."Identifying the influence of urbanization on soil organic matter content and pH from soil magnetic characteristics".Journal of Arid Land 7.6(2015):820-830.