干旱区生态环境知识资源中心(Arid): The formation of large macroaggregates induces soil organic carbon sequestration in short-term cropland restoration in a typical karst area

Arid

DOI	10.1016/j.scitotenv.2021.149588
	The formation of large macroaggregates induces soil organic carbon sequestration in short-term cropland restoration in a typical karst area
	Xiao, Lumei; Zhang, Wei; Hu, Peilei; Xiao, Dan; Yang, Rong; Ye, Yingying; Wang, Kelin
通讯作者	Zhang, W ; Wang, KL (corresponding author), 644 Yuanda 2nd Rd, Changsha 410125, Hunan, Peoples R China.
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2021
卷号	801
英文摘要	Cropland restoration induces litter and root inputs and promotes the development of biological soil crusts (BSCs), which may promote aggregate formation and soil organic carbon (SOC) sequestration. However, litter, roots and BSCs have not been simultaneously considered when assessing soil aggregate and aggregate-associated SOC frac-tion responses to cropland restoration in subtropical areas. Here, we measured particulate organic carbon (POC) and mineral-associated organic carbon (MOC) in bulk soils and soil aggregates after 15 years of cropland resto-ration. Soil samples of cropland (CL) and four cropland restoration types (plantation forest [PF], forage grassland [FG], mixed plantation of forest and forage grassland [FF], and abandoned natural grassland [NG]) from depths of 0-30 cm were collected. Cropland restoration significantly increased SOC and POC in bulk soil at the 0-5 cm depth. However, only in FG did SOC significantly increase at depths of 5-15 cm, and POC significantly increased at depths of 5-30 cm. The large macroaggregate (5-10 mm and 2-5 mm) proportions increased significantly at the 0-15 cm depth after cropland restoration, and FG, FF and NG also increased the 5-10 mm aggregate propor-tions at the 15-30 cm depth. The SOC sequestration in bulk soil with cropland restoration was attributed to in-creases in the aggregate-associated organic carbon (AAOC) pool in large macroaggregates, which was mainly attributed to the increased aggregate amount rather than the increased AAOC concentration in large macroaggre-gates. Our results also indicated that an increase in aggregate-associated particulate organic carbon (AAPOC) led to an increase in AAOC. Variation partitioning indicated that the formation of large macroaggregates was controlled by the litter-moss-root interactive effect in this karst area. FG could be a better short-term cropland restoration strategy, increasing large macroaggregates in deeper soil layers better than the other vegetation types and promoting soil carbon sequestration in deeper soil layers. (c) 2021 Elsevier B.V. All rights reserved.
英文关键词	Soil aggregates Soil organic fractions Vegetation restoration Litter-moss-root Karst ecosystem
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000701725600019
WOS关键词	LAND-USE CHANGE ; FOR-GREEN PROGRAM ; VEGETATION RESTORATION ; AGGREGATE STABILITY ; AGRICULTURAL ABANDONMENT ; ROCKY DESERTIFICATION ; LOESS PLATEAU ; MATTER ; NITROGEN ; DYNAMICS
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/364598
作者单位	[Xiao, Lumei; Zhang, Wei; Hu, Peilei; Xiao, Dan; Yang, Rong; Ye, Yingying; Wang, Kelin] Chinese Acad Sci, Inst Subtrop Agr, Key Lab Agroecol Proc Subtrop Reg, Changsha 410125, Peoples R China; [Xiao, Lumei; Zhang, Wei; Hu, Peilei; Xiao, Dan; Yang, Rong; Ye, Yingying; Wang, Kelin] Huanjiang Observat & Res Stn Karst Ecosyst, Huanjiang 547100, Peoples R China; [Xiao, Lumei; Yang, Rong] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Xiao, Lumei,Zhang, Wei,Hu, Peilei,et al. The formation of large macroaggregates induces soil organic carbon sequestration in short-term cropland restoration in a typical karst area[J],2021,801.
APA	Xiao, Lumei.,Zhang, Wei.,Hu, Peilei.,Xiao, Dan.,Yang, Rong.,...&Wang, Kelin.(2021).The formation of large macroaggregates induces soil organic carbon sequestration in short-term cropland restoration in a typical karst area.SCIENCE OF THE TOTAL ENVIRONMENT,801.
MLA	Xiao, Lumei,et al."The formation of large macroaggregates induces soil organic carbon sequestration in short-term cropland restoration in a typical karst area".SCIENCE OF THE TOTAL ENVIRONMENT 801(2021).