Vertical distribution of soil organic and inorganic carbon under different vegetation covers in two toposequences of the Liudaogou watershed on the Loess Plateau, China

doi:10.2489/jswc.73.4.479

ISWC OpenIR > 水保所科研产出--SCI > 2018--SCI

	Vertical distribution of soil organic and inorganic carbon under different vegetation covers in two toposequences of the Liudaogou watershed on the Loess Plateau, China
	N. Mao 1,2; L. Huang 4; M. Shao 1,5; Mao, N (reprint author), Chinese Acad Sci, State Key Lab Soil Eros & Dryland Farming Loess P, Inst Soil & Water Conservat, Yangling, Shaanxi, Peoples R China.; Mao, N (reprint author), Northwest Agr & Forestry A&F Univ, MWR, Yangling, Shaanxi, Peoples R China.; Mao, N (reprint author), Northwest Agr & Forestry A&F Univ, Coll Nat Resources & Environm, Yangling, Shaanxi, Peoples R China.
文章类型	Article
	2018
发表期刊	JOURNAL OF SOIL AND WATER CONSERVATION
ISSN	0022-4561
卷号	73 期号:4 页码:479-491
摘要	Understanding the carbon (C) cycle of the terrestrial ecosystem and estimating the C sequestration potential in soils are critical to evaluate ecosystem function and security. The vertical distribution of soil organic carbon (SOC) and inorganic carbon (SIC) as well as their influencing factors under different types of vegetation in two toposequences of the Liudaogou watershed on the Loess Plateau of China were investigated. Results showed that the measured soil properties were differentiated into two groups: (1) one behaving relatively conservatively (pH, bulk density, silt content, and capillary and total porosity) with coefficient of variations (CVs) < 10% and (2) the other encompassing more labile components (SOC, SIC, noncapillary porosity, clay, and sand and soil water content) with CVs > 10%. Soil organic C under different vegetation covers in the two toposequences (0.62 to 5.12 g kg(-1)) decreased rapidly with depth in the top 0 to 50 cm soil layer and then remained relatively stable over the 50 to 200 cm depth, which can be described by the exponential model. In contrast, SIC (4.11 to 18.69 g kg(-1)) was much higher than SOC and showed distinct distribution patterns, which increased initially with depth and then decreased downwards except for the grassland in the west-facing slope (W-grassland) exhibiting an opposite trend. There were no significant differences of SOC either under different vegetation covers or in different slopes over the whole profile (p > 0.05); however, significant differences of SIC were observed for both different vegetation covers in the same slope and for the same vegetation cover in different slopes (e.g., W-grassland versus W-forestland, W-grassland versus NE-grassland) (p < 0.05). This study demonstrated that different soil properties could simultaneously affect SOC and SIC contents; thus attempts to model SOC and SIC based on the independent effects of individual soil property without consideration of their interactions would result in unsatisfactory prediction. We proposed models that quantitatively described SOC and SIC contents as a combined product of different soil properties for each vegetation cover in both northeast-facing and west-facing slopes using multiple regression analysis, which could improve the prediction of SOC and SIC contents for the study area from the simple linear regression models.
关键词	Inorganic Carbon Loess Plateau Organic Carbon Soil Toposequence Vegetation Cover Vertical Distribution
学科领域	Environmental Sciences & Ecology ; Agriculture ; Water Resources
DOI	10.2489/jswc.73.4.479
收录类别	SCI
出版地	945 SW ANKENY RD, ANKENY, IA 50023-9723 USA
语种	英语
WOS记录号	WOS:000437988100017
出版者	SOIL WATER CONSERVATION SOC
项目资助者	Natural Science Foundation of China [41601221, 41571130081] ; Natural Science Foundation of China [41601221, 41571130081] ; Ministry of Science and Technology of China [2016YFC0501605] ; Ministry of Science and Technology of China [2016YFC0501605] ; Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences [LENOM2016Q0001] ; Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences [LENOM2016Q0001] ; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences [A314021402-1602] ; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences [A314021402-1602]
引用统计
文献类型	期刊论文
条目标识符	sbir.nwafu.edu.cn/handle/361005/8217
专题	水保所科研产出--SCI_2018--SCI
通讯作者	Mao, N (reprint author), Chinese Acad Sci, State Key Lab Soil Eros & Dryland Farming Loess P, Inst Soil & Water Conservat, Yangling, Shaanxi, Peoples R China.; Mao, N (reprint author), Northwest Agr & Forestry A&F Univ, MWR, Yangling, Shaanxi, Peoples R China.; Mao, N (reprint author), Northwest Agr & Forestry A&F Univ, Coll Nat Resources & Environm, Yangling, Shaanxi, Peoples R China.
作者单位	1.Chinese Acad Sci, State Key Lab Soil Eros & Dryland Farming Loess P, Inst Soil & Water Conservat, Yangling, Shaanxi, Peoples R China 2.(2）Northwest Agr & Forestry A&F Univ, MWR, Yangling, Shaanxi, Peoples R China 3.（3）Northwest Agr & Forestry A&F Univ, Coll Nat Resources & Environm, Yangling, Shaanxi, Peoples R China 4.（4）Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R China 5.（5）Northwest A&F Univ, MWR, Yangling, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	N. Mao,L. Huang,M. Shao,et al. Vertical distribution of soil organic and inorganic carbon under different vegetation covers in two toposequences of the Liudaogou watershed on the Loess Plateau, China[J]. JOURNAL OF SOIL AND WATER CONSERVATION,2018,73(4):479-491.
APA	N. Mao,L. Huang,M. Shao,Mao, N ,Mao, N ,&Mao, N .(2018).Vertical distribution of soil organic and inorganic carbon under different vegetation covers in two toposequences of the Liudaogou watershed on the Loess Plateau, China.JOURNAL OF SOIL AND WATER CONSERVATION,73(4),479-491.
MLA	N. Mao,et al."Vertical distribution of soil organic and inorganic carbon under different vegetation covers in two toposequences of the Liudaogou watershed on the Loess Plateau, China".JOURNAL OF SOIL AND WATER CONSERVATION 73.4(2018):479-491.

条目包含的文件		下载所有文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
2-49.pdf（741KB）	期刊论文	作者接受稿	开放获取	CC BY-NC-SA	浏览下载