Catchment scale spatial variability of soil salt content in agricultural oasis, Northwest China

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	Catchment scale spatial variability of soil salt content in agricultural oasis, Northwest China
	Wang, YG; Li, Y; Xiao, DN; Li, Y, Chinese Acad Sci, Xinjiang Inst Ecol & Geog, 40-3 S Beijing Rd, Urumqi 830011, Xinjiang, Peoples R China
刊名	ENVIRONMENTAL GEOLOGY
	2008
卷号	56 期号:2 页码:439-446
关键词	Oasis Soil Salt Content Landscape Type Geostatistics Gis
ISSN号	0943-0105
英文摘要	Soil salinization is a serious environmental problem in the world, especially in arid and semi-arid regions. Therefore, estimating spatial variability of soil salinity plays an important role in environmental sciences. Aiming at the problem of soil salinization inside an oasis, a case study was carried out at the Sangong River catchment in Xinjiang province, northwest China. Methods of classical statistics, geostatistics, remote sensing (RS) and geographic information system (GIS) were applied to estimate the spatial variability of soil salt content in the topsoil (0-20 cm) and its relationship with landscape structure at catchment scale. The objective of this study was to provide a scientific basis to understand the heterogeneous of spatial distribution of soil salt content at a large scale. The results revealed that (1) elevation of landform was a key factor for soil salt content's spatial variability, and soil salt content had a strong spatial autocorrelation, which was mainly induced by structural factors. (2) Mapping of soil salt content by Kriging and comparing it with landscape maps showed that area of soil salinization in old oasis was smaller than that in new oasis, and degree of soil salinization in old oasis was also lower than that in the new one. Among all landscapes, cropland was mostly affected by salinity, with 38.8% of the cropland in new oasis moderately affected by soil salinity, and 8.54% in old oasis.
学科主题	Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
语种	英语
WOS记录号	WOS:000260363600021
资助机构	Chinese Academy of Science [KZCX2-YW-431]; National Natural Science Foundation of China [40701187]
公开日期	2011-09-23
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/54343]
专题	沈阳应用生态研究所_沈阳应用生态研究所
通讯作者	Li, Y, Chinese Acad Sci, Xinjiang Inst Ecol & Geog, 40-3 S Beijing Rd, Urumqi 830011, Xinjiang, Peoples R China
推荐引用方式 GB/T 7714	Wang, YG,Li, Y,Xiao, DN,et al. Catchment scale spatial variability of soil salt content in agricultural oasis, Northwest China[J]. ENVIRONMENTAL GEOLOGY,2008,56(2):439-446.
APA	Wang, YG,Li, Y,Xiao, DN,&Li, Y, Chinese Acad Sci, Xinjiang Inst Ecol & Geog, 40-3 S Beijing Rd, Urumqi 830011, Xinjiang, Peoples R China.(2008).Catchment scale spatial variability of soil salt content in agricultural oasis, Northwest China.ENVIRONMENTAL GEOLOGY,56(2),439-446.
MLA	Wang, YG,et al."Catchment scale spatial variability of soil salt content in agricultural oasis, Northwest China".ENVIRONMENTAL GEOLOGY 56.2(2008):439-446.