干旱区生态环境知识资源中心(Arid): Storage, pattern and driving factors of soil organic carbon in an ecologically fragile zone of northern China

Arid

DOI	10.1016/j.geoderma.2019.02.030
	Storage, pattern and driving factors of soil organic carbon in an ecologically fragile zone of northern China
	Wang, Xuyang 1,2; Li, Yugiang 1,3; Gong, Xiangwen 1,2; Niu, Yayi 1,2; Chen, Yinping 4; Shi, Xiaoping 4; Li, Wei 5
通讯作者	Li, Yugiang
来源期刊	GEODERMA
ISSN	0016-7061
EISSN	1872-6259
出版年	2019
卷号	343 页码:155-165
英文摘要	Knowledge of the spatial pattern of soil organic carbon (SOC) and its influencing factors is important for understanding the carbon cycle. We investigated the SOC density (SOCD) to a depth of 30 cm from ground surface at 644 sites in an agro-pastoral ecotone of northern China that covered 654,564 km(2). SOC storage to a depth of 30 cm was 2360 Tg, and SOCD averaged 3.78 kg.m(-2) for the entire study area. SOCD to a depth of 20 cm and from 20 to 30 cm showed strong and moderate spatial dependence, with a nugget to sill ratio of 0.7% and 43.5%, respectively. Overall, SOCD increased from southwest to northeast, it was more strongly correlated with latitude than with longitude. Forest and sandy land had the highest and lowest SOCD, at 6.28 and 1.76 kg.m(-2), respectively. The SOCD (kg.m(-2)) of grassland decreased with decreasing vegetation cover: high (4.42) > medium (3.62) > low (2.50). For the common soils in the study area, the highest mean SOCD was 9.31 kg.m(-2) in Grey Forest Soils, versus 1.75 kg.m(-2) in Brown Pedocals. In the study area, temperature appears to be the dominant factor that influences SOC, and SOCD decreased with increasing temperature. However, topographic factors (elevation, slope, and aspect) had a weaker effect on SOC. Our results provide a valuable baseline for future research on the long-term evolution of SOCD.
英文关键词	Soil organic carbon density Spatial pattern Agro-pastoral ecotone Geostatistics Correlation
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000463304300014
WOS关键词	DIFFERENT LAND USES ; SPATIAL-DISTRIBUTION ; TOTAL NITROGEN ; LOESS PLATEAU ; GRASSLAND SOILS ; STOCKS ; VARIABILITY ; FORESTS ; CLIMATE ; DESERTIFICATION
WOS类目	Soil Science
WOS研究方向	Agriculture
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/215930
作者单位	1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, 320 Donggang West Rd, Lanzhou 730000, Gansu, Peoples R China; 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 3.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Naiman Desertificat Res Stn, Tongliao 028300, Peoples R China; 4.Lanzhou Jiaotong Univ, Sch Environm & Municipal Engn, Lanzhou 730070, Gansu, Peoples R China; 5.Northwest A&F Univ, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Wang, Xuyang,Li, Yugiang,Gong, Xiangwen,et al. Storage, pattern and driving factors of soil organic carbon in an ecologically fragile zone of northern China[J]. 西北农林科技大学,2019,343:155-165.
APA	Wang, Xuyang.,Li, Yugiang.,Gong, Xiangwen.,Niu, Yayi.,Chen, Yinping.,...&Li, Wei.(2019).Storage, pattern and driving factors of soil organic carbon in an ecologically fragile zone of northern China.GEODERMA,343,155-165.
MLA	Wang, Xuyang,et al."Storage, pattern and driving factors of soil organic carbon in an ecologically fragile zone of northern China".GEODERMA 343(2019):155-165.