Spatial Variability of Soil Organic Carbon in a Watershed on the Loess Plateau

ISWC OpenIR > 水保所知识产出(1956---)

	Spatial Variability of Soil Organic Carbon in a Watershed on the Loess Plateau
	Wang Yun-Qiang; Zhang Xing-Chang; Zhang Jing-Li; Zhang, XC
	2009
发表期刊	PEDOSPHERE
卷号	19 期号:4 页码:486-495
摘要	Soil organic carbon (SOC) has great impacts on global warming, land degradation and food security. Classic statistical and geostatistical methods were used to characterize and compare the spatial heterogeneity of SOC and related factors, such as topography, soil type and land use, in the Liudaogou watershed on the Loess Plateau of North China. SOC concentrations followed a log-normal distribution with an arithmetic and geometric means of 23.4 and 21.3 g kg(-1), respectively, were moderately variable (CV = 75.9%), and demonstrated a moderate spatial dependence according to the nugget ratio (34.7%). The experimental variogram of SOC was best-fitted by a spherical model, after the spatial outliers had been detected and subsequently eliminated. Lower SOC concentrations were associated with higher elevations. Warp soils and farmland had the highest SOC concentrations, while aeolian sand soil and shrublands had the lowest SOC values. The geostatistical characteristics of SOC for the different soil and land use types were different. These patterns were closely related to the spatial structure of topography, and soil and land use types.
关键词	Geostatistics Land Use Soil Type Spatial Pattern Topography
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	sbir.nwafu.edu.cn/handle/361005/4825
专题	水保所知识产出(1956---)
通讯作者	Zhang, XC
推荐引用方式 GB/T 7714	Wang Yun-Qiang,Zhang Xing-Chang,Zhang Jing-Li,et al. Spatial Variability of Soil Organic Carbon in a Watershed on the Loess Plateau[J]. PEDOSPHERE,2009,19(4):486-495.
APA	Wang Yun-Qiang,Zhang Xing-Chang,Zhang Jing-Li,&Zhang, XC.(2009).Spatial Variability of Soil Organic Carbon in a Watershed on the Loess Plateau.PEDOSPHERE,19(4),486-495.
MLA	Wang Yun-Qiang,et al."Spatial Variability of Soil Organic Carbon in a Watershed on the Loess Plateau".PEDOSPHERE 19.4(2009):486-495.

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