干旱区生态环境知识资源中心(Arid): Spatial interpolation of red bed soil moisture in Nanxiong basin, South China

Arid

DOI	10.1016/j.jconhyd.2021.103860
	Spatial interpolation of red bed soil moisture in Nanxiong basin, South China
	Yan, Ping; Lin, Kairong; Wang, Yiren; Zheng, Ye; Gao, Xin; Tu, Xinjun; Bai, Chunmei
通讯作者	Lin, KR ; Wang, YR (corresponding author), Sun Yat Sen Univ, Sch Civil Engn, Guangzhou 510275, Peoples R China.
来源期刊	JOURNAL OF CONTAMINANT HYDROLOGY
ISSN	0169-7722
EISSN	1873-6009
出版年	2021
卷号	242
英文摘要	Soil moisture is an important indicator for monitoring land degradation and plays an important role in soil biogeochemistry. Mapping the spatial distribution of soil moisture provides fundamental information for soil management and agricultural production. In this study, 225 sampling points in the study area, Nanxiong basin, were investigated to map the spatial distribution of soil moisture in the typical ecological degradation red beds area. Four interpolation methods including inverse distance weighting (IDW), ordinary kriging (OK), radial basis function (RBF) and empirical bayesian kriging (EBF) were used to estimate the continuous soil moisture distribution. The results showed that the soil moisture of the study area ranged from 8.12% to 32.82% with an average of 18.42% and a median of 18.20%. The annual average temperature and soil bulk density had significantly negative correlations with soil moisture, of-0.53 and - 0.31, respectively. The regional soil moisture had a moderate variation with the variation coefficient of 21.66% and strong spatial dependence with the nugget-to-sill ratios of 32.23%. The IDW method obtained a more accurate estimation on the spatial variability of soil moisture in the Nanxiong basin. The spatial distribution of soil moisture in the study area was drawn by different interpolation methods. The results show that the red bed degradation in the eastern part of the Nanxiong basin is more severe than in other areas, in which the geomorphic characteristics of red bed desert have appeared with the lowest soil moisture in this study. In addition, the spatial heterogeneity of soil moisture is also pertinent to human disturbance and land use. The results of spatial soil moisture distribution are of great significance for monitoring land degradation and agricultural drought in the red bed area.
英文关键词	Soil moisture Nanxiong basin Influential factor Spatial variation Spatial interpolation
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000704372300010
WOS关键词	LAND-USE CHANGE ; LOESS PLATEAU ; SPATIOTEMPORAL VARIABILITY ; AGRICULTURAL DROUGHT ; WATER-CONTENT ; CARBON STOCK ; PHOSPHORUS ; SCALE ; NITROGEN ; PATTERN
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/363822
作者单位	[Yan, Ping; Lin, Kairong; Wang, Yiren; Gao, Xin; Tu, Xinjun; Bai, Chunmei] Sun Yat Sen Univ, Sch Civil Engn, Guangzhou 510275, Peoples R China; [Lin, Kairong] Guangdong Key Lab Ocean Civil Engn, Guangzhou 510275, Peoples R China; [Lin, Kairong] Southern Marine Sci & Engn Guangdong Lab, Zhuhai 519000, Peoples R China; [Zheng, Ye] McGill Univ, Dept Civil Engn, Montreal, PQ H3A 0C3, Canada
推荐引用方式 GB/T 7714	Yan, Ping,Lin, Kairong,Wang, Yiren,et al. Spatial interpolation of red bed soil moisture in Nanxiong basin, South China[J],2021,242.
APA	Yan, Ping.,Lin, Kairong.,Wang, Yiren.,Zheng, Ye.,Gao, Xin.,...&Bai, Chunmei.(2021).Spatial interpolation of red bed soil moisture in Nanxiong basin, South China.JOURNAL OF CONTAMINANT HYDROLOGY,242.
MLA	Yan, Ping,et al."Spatial interpolation of red bed soil moisture in Nanxiong basin, South China".JOURNAL OF CONTAMINANT HYDROLOGY 242(2021).