干旱区生态环境知识资源中心(Arid): Dielectric properties of saline soil based on a modified Dobson dielectric model

Arid

	Dielectric properties of saline soil based on a modified Dobson dielectric model
	Tashpolat Nigara; Ding Jianli; Yu Danlin
来源期刊	Journal of Arid Land
ISSN	1674-6767
出版年	2015
卷号	7 期号:5 页码:696-705
英文摘要	Soil salinization is a major concern for agricultural development in arid areas. In this paper, a modified Dobson dielectric model was applied to simulate the dielectric constant of saline soil in the Ugan-Kuqa river delta oasis of Xinjiang Uygur autonomous region, northwestern China. The model performance was examined through analyzing the influences of its parameters on the soil dielectric constant and the relationship between radar backscattering coefficient and the dielectric constant of saline soil. The results of the study indicate that: (1) The real part of the soil dielectric constant is affected by soil water content at low radar frequencies; the imaginary part is closely related with both the soil water content and soil salt content. (2) The soil water and salt contents are related with the coefficient of dialectical loss, which is consistent with the natural conditions of saline soil in arid areas and provides valuable references for the study of soil dielectric properties. (3) The changes of soil water content and soil salt content have instant influences on the dielectric constant of saline soil. Subsequently, the radar backscattering coefficient is affected to respond to the dielectric constant of saline soil. The radar backscattering coefficient is most responsible to the radar's cross polarization pattern with a correlation coefficient of R2=0.75. This study provides a potential method to monitor soil salinization and soil water content by using a soil dielectric model and radar techniques.
英文关键词	saline soil dielectric constant dielectric constant model backscattering coefficient Radarsat-2 images
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	CSCD
WOS研究方向	Agriculture
CSCD记录号	CSCD:5474548
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335522
作者单位	Tashpolat Nigara, Xinjiang University, Key Laboratory of Oasis Ecology (MOE), Urumqi, Xinjiang 830046, China.; Ding Jianli, Xinjiang University, Key Laboratory of Oasis Ecology (MOE), Urumqi, Xinjiang 830046, China.; Yu Danlin, Earth and Environmental Studies, Montclair State University, Montclair, 07043, USA.
推荐引用方式 GB/T 7714	Tashpolat Nigara,Ding Jianli,Yu Danlin. Dielectric properties of saline soil based on a modified Dobson dielectric model[J],2015,7(5):696-705.
APA	Tashpolat Nigara,Ding Jianli,&Yu Danlin.(2015).Dielectric properties of saline soil based on a modified Dobson dielectric model.Journal of Arid Land,7(5),696-705.
MLA	Tashpolat Nigara,et al."Dielectric properties of saline soil based on a modified Dobson dielectric model".Journal of Arid Land 7.5(2015):696-705.