干旱区生态环境知识资源中心(Arid): Soil carbon-nitrogen coupled accumulation following the natural vegetation restoration of abandoned farmlands in a karst rocky desertification region

Arid

DOI	10.1016/j.ecoleng.2020.106033
	Soil carbon-nitrogen coupled accumulation following the natural vegetation restoration of abandoned farmlands in a karst rocky desertification region
	Lan, Jiacheng; Hu, Ning; Fu, Wali
通讯作者	Hu, N (corresponding author), Earthquake Agcy Xinxiang City, Xinxiang 453000, Henan, Peoples R China.
来源期刊	ECOLOGICAL ENGINEERING
ISSN	0925-8574
EISSN	1872-6992
出版年	2020
卷号	158
英文摘要	Vegetation restoration on abandoned farmlands is one of the typical methods for accumulating soil organic carbon (OC) and total nitrogen (TN). However, the coupling of soil OC and N accumulation following vegetation restoration remain poorly known in karst rocky desertification regions in Southwest China. Four natural vegetation restoration lands, namely, grassland, shrubland, secondary forest I, and secondary forest II, were chosen with farmland as a reference. Soil samples were collected to determine the soil aggregates, soil OC and TN accumulation, soil inorganic N content, and soil N transformation rates. The amount of different soil aggregates fractions and stability of soil aggregates, levels of soil OC and TN in whole soil and aggregates, levels of soil inorganic N, and soil N transformation rates were considerably increased by vegetation restoration following farmland abandonment. The increases in total soil OC and TN stocks mainly contributed to the increase of OC and TN stocks in large aggregates. The soil C:N ratios and amount of exchangeable calcium were the important factors associated with soil OC and TN accumulation. Soil net N mineralization and nitrification rates were similar to the patterns of soil OC or TN concentrations in grassland to secondary forest. Soil substrate controlled soil N transformation rates along vegetation restoration. Our results suggested that abandoning farmlands for natural vegetation restoration can improve the soil structure, facilitate the coupled accumulation of soil C and N, and enhance soil N transformation rates and N availability, but the coupling accumulation of soil C and N may be limited by soil N in the early stages of vegetation restoration.
英文关键词	Vegetation restoration Carbon-nitrogen accumulation Soil N transformation Soil N availability Karst region
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000596374600006
WOS关键词	AGGREGATE-ASSOCIATED CARBON ; LAND-USE CHANGE ; ORGANIC-CARBON ; AGRICULTURAL ABANDONMENT ; TERRESTRIAL ECOSYSTEMS ; GREEN PROGRAM ; LOESS PLATEAU ; MATTER ; DYNAMICS ; AFFORESTATION
WOS类目	Ecology ; Engineering, Environmental ; Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology ; Engineering
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/348814
作者单位	[Lan, Jiacheng] Guizhou Normal Univ, State Engn Technol Inst Karst Desertificat Contro, Sch Karst Sci, Guiyang 550001, Peoples R China; [Hu, Ning] Earthquake Agcy Xinxiang City, Xinxiang 453000, Henan, Peoples R China; [Fu, Wali] Southwest Univ, Sch Geog Sci, Chongqing 400715, Peoples R China
推荐引用方式 GB/T 7714	Lan, Jiacheng,Hu, Ning,Fu, Wali. Soil carbon-nitrogen coupled accumulation following the natural vegetation restoration of abandoned farmlands in a karst rocky desertification region[J],2020,158.
APA	Lan, Jiacheng,Hu, Ning,&Fu, Wali.(2020).Soil carbon-nitrogen coupled accumulation following the natural vegetation restoration of abandoned farmlands in a karst rocky desertification region.ECOLOGICAL ENGINEERING,158.
MLA	Lan, Jiacheng,et al."Soil carbon-nitrogen coupled accumulation following the natural vegetation restoration of abandoned farmlands in a karst rocky desertification region".ECOLOGICAL ENGINEERING 158(2020).