Soil Inorganic Carbon Sequestration Following Afforestation Is Probably Induced by Pedogenic Carbonate Formation in Northwest China

doi:10.3389/fpls.2017.01282

ISWC OpenIR > 水保所科研产出--SCI > 2017--SCI

	Soil Inorganic Carbon Sequestration Following Afforestation Is Probably Induced by Pedogenic Carbonate Formation in Northwest China
	Gao, Yang 1,2; Tian, Jing 2; Pang, Yue 2; Liu, Jiabin 1,3; Liu, JB (reprint author), Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Peoples R China.; Liu, JB (reprint author), Northwest A&F Univ, Coll Nat Resources & Environm, Yangling, Peoples R China.
文章类型	Article
	2017
发表期刊	FRONTIERS IN PLANT SCIENCE
ISSN	1664-462X
通讯作者邮箱	liujb@nwsuaf.edu.cn
卷号	8
摘要	In arid and semiarid areas, the effects of afforestation on soil organic carbon (SOC) have received considerable attention. In these areas, in fact, soil inorganic carbon (SIC), rather than SOC, is the dominant form of carbon, with a reservoir approximately 2-10 times larger than that of SOC. A subtle fluctuation of SIC pool can strongly alter the regional carbon budget. However, few studies have focused on the variations in SIC, or have used stable soil carbon isotopes to analyze the reason for SIC variations following afforestation in degraded semiarid lands. In the Mu Us Desert, northwest China, we selected a shifting sand land (SL) and three nearby forestlands (Populus alba) with ages of 8 (P-8), 20 (P-20) and 30 (P-30) years, and measured SIC, SOC, soil organic and inorganic delta C-13 values (delta C-13-SOC and delta C-13-SIC) and other soil properties. The results showed that SIC stock at 0-100 cm in SL was 34.2 Mg ha(-1), and it increased significantly to 42.5, 49.2, and 68.3 Mg ha(-1) in P-8, P-20, and P-30 lands, respectively. Both delta C-13-SIC and delta C-13-SOC within the 0-100 cm soil layer in the three forestlands were more negative than those in SL, and gradually decreased with plantation age. Afforestation elevated soil fine particles only at a depth of 0-40 cm. The entire dataset (260 soil samples) exhibited a negative correlation between d13C-SIC and SIC content (R-2 = 0.71, P < 0.01), whereas it showed positive correlation between SOC content and SIC content (R-2 = 0.52, P < 0.01) and between delta C-13-SOC and delta C-13-SIC (R-2 = 0.63, P < 0.01). However, no correlation was observed between SIC content and soil fine particles. The results indicated that afforestation on shifting SL has a high potential to sequester SIC in degraded semiarid regions. The contribution of soil fine particle deposition by canopy to SIC sequestration is limited. The SIC sequestration following afforestation is very probably caused by pedogenic carbonate formation, which is closely related to SOC accumulation. Our findings suggest that SIC plays an important role in the carbon cycle in semiarid areas and that overlooking this carbon pool may substantially lead to underestimating carbon sequestration capacity following vegetation rehabilitation.
关键词	Afforestation Degraded Semiarid Regions Pedogenic Inorganic Carbon Soil Inorganic Carbon Stable Carbon Isotope
学科领域	Plant Sciences
DOI	10.3389/fpls.2017.01282
URL	查看原文
收录类别	SCI
出版地	LAUSANNE
语种	英语
WOS记录号	WOS:000406113800001
出版者	FRONTIERS MEDIA SA
项目资助者	National Natural Science Foundation of China [31500585]; Fundamental Research Fund for the Central Universities [Z109021619]; Natural Science Foundation of Shaanxi Province [2016JQ3021] ; National Natural Science Foundation of China [31500585]; Fundamental Research Fund for the Central Universities [Z109021619]; Natural Science Foundation of Shaanxi Province [2016JQ3021]
引用统计	被引频次：9[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	sbir.nwafu.edu.cn/handle/361005/7958
专题	水保所科研产出--SCI_2017--SCI
通讯作者	Liu, JB (reprint author), Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Peoples R China.; Liu, JB (reprint author), Northwest A&F Univ, Coll Nat Resources & Environm, Yangling, Peoples R China.
作者单位	1.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Peoples R China 2.Northwest A&F Univ, Coll Forestry, Yangling, Peoples R China 3.Northwest A&F Univ, Coll Nat Resources & Environm, Yangling, Peoples R China
推荐引用方式 GB/T 7714	Gao, Yang,Tian, Jing,Pang, Yue,et al. Soil Inorganic Carbon Sequestration Following Afforestation Is Probably Induced by Pedogenic Carbonate Formation in Northwest China[J]. FRONTIERS IN PLANT SCIENCE,2017,8.
APA	Gao, Yang,Tian, Jing,Pang, Yue,Liu, Jiabin,Liu, JB ,&Liu, JB .(2017).Soil Inorganic Carbon Sequestration Following Afforestation Is Probably Induced by Pedogenic Carbonate Formation in Northwest China.FRONTIERS IN PLANT SCIENCE,8.
MLA	Gao, Yang,et al."Soil Inorganic Carbon Sequestration Following Afforestation Is Probably Induced by Pedogenic Carbonate Formation in Northwest China".FRONTIERS IN PLANT SCIENCE 8(2017).