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	Using GIS spatial distribution to predict soil organic carbon in subtropical China
	Cheng, XF; Shi, XZ; Yu, DS; Pan, XZ; Wang, HJ; Sun, WX
刊名	PEDOSPHERE
	2004-11-01
卷号	14期号:4页码:425-431
关键词	digital elevation model parent material regression model soil organic carbon topography
ISSN号	1002-0160
通讯作者	Shi, XZ()
英文摘要	Spatial distribution of organic carbon in soils is difficult to estimate because of inherent spatial variability and insufficient data. A soil-landscape model for a region, based on 151 samples for parent material and topographic factors, was established using a GIS spatial analysis technique and a digital elevation model (DEM) to reveal spatial distribution characteristics of soil organic carbon (SOC). Correlations between organic carbon and topographic factors were analyzed and a regression model was established to predict SOC content. Results for surface soils (0-20 cm) showed that the average SOC content was 12.8 g kg(-1), with the SOC content between 6 and 12 g kg(-1) occupying the largest area and SOC over 24 g kg(-1) the smallest. Also, soils derived from phyllite were the highest in the SOC content and area, while soils developed on purple shale the lowest. Although parent material, elevation, and slope exposure were all significant topographic variables (P < 0.01), slope exposure had the highest correlation to SOC content (r = 0.66). Using a multiple regression model (R-2 = 0.611) and DEM (with a 30 m X 30 m grid), spatial distribution of SOC could be forecasted.
收录类别	SCI
WOS关键词	DIGITAL ELEVATION MODEL ; MAPPED REFERENCE AREA ; SITE CHARACTERISTICS ; STORAGE PREDICTION ; HYDROMORPHIC SOILS ; LANDSCAPE ; ATTRIBUTES ; FOREST ; REGION ; REGRESSION
WOS研究方向	Agriculture
WOS类目	Soil Science
语种	英语
出版者	SCIENCE CHINA PRESS
WOS记录号	WOS:000224774000002
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2559338
专题	南京土壤研究所
通讯作者	Shi, XZ
作者单位	1.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China 2.Anhui Normal Univ, Dept Geog, Wuhu 241000, Peoples R China
推荐引用方式 GB/T 7714	Cheng, XF,Shi, XZ,Yu, DS,et al. Using GIS spatial distribution to predict soil organic carbon in subtropical China[J]. PEDOSPHERE,2004,14(4):425-431.
APA	Cheng, XF,Shi, XZ,Yu, DS,Pan, XZ,Wang, HJ,&Sun, WX.(2004).Using GIS spatial distribution to predict soil organic carbon in subtropical China.PEDOSPHERE,14(4),425-431.
MLA	Cheng, XF,et al."Using GIS spatial distribution to predict soil organic carbon in subtropical China".PEDOSPHERE 14.4(2004):425-431.

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