Spatiotemporal variation of soil organic carbon in the cultivated soil layer of dry land in the South-Western Yunnan Plateau, China

doi:10.1007/s11629-016-4314-7

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > Journal of Mountain Science > Journal of Mountain Science-2017 > Vol14 No.12

	Spatiotemporal variation of soil organic carbon in the cultivated soil layer of dry land in the South-Western Yunnan Plateau, China
	Zhao, Ji-xia 1,2; Dai, Fu-qiang 3; He, Shou-jia 4; Zhang, Qing 4; Liu, Gang-cai1
刊名	JOURNAL OF MOUNTAIN SCIENCE
	2017-12-01
卷号	14 期号:12 页码:2484-2497
关键词	Soil Organic Carbon Spatiotemporal Changes Dry Land Cultivated Soil Layer Yunnan Plateau
ISSN号	1672-6316
DOI	10.1007/s11629-016-4314-7
文献子类	Article
英文摘要	The dynamics of soil organic carbon (SOC) in cropland is one of the central issues related to both soil fertility and environmental safety. However, little information is available at county level regarding the spatiotemporal variability of SOC in the southwestern mountainous region of China. Thus, this study aimed to explore spatiotemporal changes of SOC in the cultivated soil layer of dry land in Mojiang County, Yunnan Province, China. Data were obtained from the second national soil survey (SNSS) of 1985 and soil tests for fertilizer application carried out by the Mojiang Agricultural Bureau in 2006. The ANOVA test was applied to determine any significant differences between the datasets, while semivariogram analysis was performed on geostatistics via an ordinary Kriging method in order to map spatial patterns of soil organic carbon density (SOCD). The results revealed that SOCD in the cultivated soil layer significantly decreased from 3.93 kg m(-2) in 1985 to 2.89 kg m(-2) in 2006, with a total soil organic carbon stock (SOCS) decrease of 41.54x10(4) t over the same period. SOCS levels fell most markedly in yellow-brown soil at a rate of 51.52%, while an increase of 8.70% was found in the analysed latosol. Geostatistical analysis also showed that the recorded changes in SOCD between 1985 and 2006 were spatially structured. The decreasing trend might be attributed to the combined action of intense cultivation, major crop residue removal without any protective tillage measures, unreasonable fertilization and natural climatic diversity inducing a large decrease in SOC in the studied cultivated dry land region of Mojiang County. Therefore, management measures such as protective tillage should be undertaken in order to enhance soil C sequestration.
WOS关键词	NORTHERN GREAT-PLAINS ; LONG-TERM APPLICATION ; PADDY SOILS ; TERRESTRIAL ECOSYSTEMS ; CROPLAND SOILS ; CLIMATE-CHANGE ; CO2 EMISSIONS ; LOESS SOIL ; SEQUESTRATION ; MATTER
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000418074700009
资助机构	Agriculture Ministry of China(201503119) ; Natural Science Foundation of China(41471232)
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/20637]
专题	Journal of Mountain Science _Journal of Mountain Science-2017_Vol14 No.12 成都山地灾害与环境研究所_山地灾害与地表过程重点实验室
通讯作者	Liu, Gang-cai
作者单位	1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Sichuan, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chongqing Technol & Business Univ, Coll Tourism & Land Resources, Chongqing 400067, Peoples R China 4.Yunnan Acad Agr Sci, Agr Environm & Resources Res Inst, Kunming 650205, Yunnan, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Ji-xia,Dai, Fu-qiang,He, Shou-jia,et al. Spatiotemporal variation of soil organic carbon in the cultivated soil layer of dry land in the South-Western Yunnan Plateau, China[J]. JOURNAL OF MOUNTAIN SCIENCE,2017,14(12):2484-2497.
APA	Zhao, Ji-xia,Dai, Fu-qiang,He, Shou-jia,Zhang, Qing,&Liu, Gang-cai.(2017).Spatiotemporal variation of soil organic carbon in the cultivated soil layer of dry land in the South-Western Yunnan Plateau, China.JOURNAL OF MOUNTAIN SCIENCE,14(12),2484-2497.
MLA	Zhao, Ji-xia,et al."Spatiotemporal variation of soil organic carbon in the cultivated soil layer of dry land in the South-Western Yunnan Plateau, China".JOURNAL OF MOUNTAIN SCIENCE 14.12(2017):2484-2497.