Multi-scale heterogeneity of soil moisture following snow thawing in Haloxylon ammodendron shrubland

CORC > 新疆生态与地理研究所 > 中国科学院新疆生态与地理研究所 > 中国科学院新疆生态与地理研究所(2010年以前数据)

	Multi-scale heterogeneity of soil moisture following snow thawing in Haloxylon ammodendron shrubland
	Li ; Jun1 ; 2 ; Zhao ; ChenYi1 ; Zhu ; Hong1 ; Wang ; Feng1 ; LiJuan1 ; Kou ; SiYong1
刊名	Science in China, Series D: Earth Sciences
	2007
卷号	50 期号:SUPPL. 1 页码:49-55
关键词	Gaussian model - Geostatistics - Moisture distribution - Semivariogram
ISSN号	1006-9313
中文摘要	Spatial variation of soil moisture after snow thawing in South Gurbantunggut was quantitatively studied using ANOVA and geostatistics at various scales. The results show that the soil moisture heterogeneity varies along with spatial scales. At the shrub individual scale, there is a gradient in soil moisture from shrub-canopied area to canopy margin and to the interspaces between shrubs. At the community scale, soil moisture is highly autocorrelated and the semivariogram is fitted as spherical model, with an 89.6% structural variance and a range of 4.02 m. In addition, Kringing map indicates that the soil moisture distribution pattern after snow thawing is highly consistent with the shrub patch pattern. At the typical inter-dune transect scale, soil moisture presents a pattern of high value at inter-dune depression and low value at dune, and this variation is fitted as Gaussian model with a structural variance of 95.8% and a range of 66.16 m. The range is comparable with the scale of topography zoning, suggesting that the topography pattern controls the pattern of snowmelt at this scale. The evidence indicates that the heterogeneity of soil moisture at various scales is controlled by various land surface processes after snow thawing. For Gurbantunggut Desert, the spatial heterogeneity of snowmelt at various scales is ecologically valuable, because it promotes the utilization efficiency of the snowmelt for the desert vegetation. © Science in China Press 2007. (21 refs.)
学科主题	植物生理学
收录类别	SCI ; EI
公开日期	2011-08-19
内容类型	期刊论文
源URL	[http://ir.xjlas.org/handle/365004/10676]
专题	新疆生态与地理研究所_中国科学院新疆生态与地理研究所(2010年以前数据)
推荐引用方式 GB/T 7714	Li,Jun1,2,et al. Multi-scale heterogeneity of soil moisture following snow thawing in Haloxylon ammodendron shrubland[J]. Science in China, Series D: Earth Sciences,2007,50(SUPPL. 1):49-55.
APA	Li.,Jun1.,2.,Zhao.,ChenYi1.,...&SiYong1.(2007).Multi-scale heterogeneity of soil moisture following snow thawing in Haloxylon ammodendron shrubland.Science in China, Series D: Earth Sciences,50(SUPPL. 1),49-55.
MLA	Li,et al."Multi-scale heterogeneity of soil moisture following snow thawing in Haloxylon ammodendron shrubland".Science in China, Series D: Earth Sciences 50.SUPPL. 1(2007):49-55.