干旱区生态环境知识资源中心(Arid): Effects of land-use patterns on soil carbon and nitrogen variations along revegetated hillslopes in the Chinese Loess Plateau

Arid

DOI	10.1016/j.scitotenv.2020.141156
	Effects of land-use patterns on soil carbon and nitrogen variations along revegetated hillslopes in the Chinese Loess Plateau
	Gao, Guangyao; Tuo, Dengfeng; Han, Xiaoyang; Jiao, Lei; Li, Junran; Fu, Bojie
通讯作者	Fu, BJ
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2020
卷号	746
英文摘要	In water-limited areas, revegetation of abandoned croplands may lead to extensive land-use changes and considerable variations on soil carbon (C) and nitrogen (N). However, the impact of land-use patterns (i.e., the spatial combinations of different land-use types) on soil C and N variations following revegetation remains unclear. In this study, we measured soil organic carbon (SOC), total carbon (TC), and total nitrogen (TN) stocks to a depth of 200 cm in grassland (GL), shrubland (SL), young forestland (YF), and mature forestland (MF) under four land-use patterns in a catchment located in the Chinese Loess Plateau. The highest SOC, TC and TN stocks occurred in MF and the lowest was found in GL. Compared to every single land-use type, soil C and N stocks significantly increased under different land-use patterns. The highest SOC stock (6.51 kg m(-2)) was found in the GL-YF-SL pattern, and the highest TC stock (47.25 kg m(-2)) and TN stock (0.70 kg m(-2)) were both observed in the MF-YF pattern. SOC stocks showed significantly positive correlations with TC and TN stocks under different land-use patterns (p < 0.05), except for the GL-MF. The soil C-N interactions were stronger in the MF-SL and GL-YF-SL patterns compared to the GL-MF and MF-SL. Redundancy analysis indicated that the SOC, TC, and TN variations were well explained by aboveground biomass and land-use patterns, with accumulated variance of 41.6% and 54.2% in Axis 1 and Axis 2, respectively. The differences of soil C and N accumulation among land-use patterns were mostly related to different vegetation coverage and the intensity of soil erosion. This study indicates that creating proper spatial distribution of land-use types on hillslopes could benefit soil C and N sequestrations and ecosystem restoration in semi-arid environments. (C) 2020 Elsevier B.V. All rights reserved.
英文关键词	Revegetation Land-use pattern Soil carbon and nitrogen Aboveground biomass Loess hillslope
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000579371300060
WOS关键词	ORGANIC-CARBON ; BACTERIAL COMMUNITY ; AGRICULTURAL SOILS ; VEGETATION ; EROSION ; STOCKS ; ECOSYSTEM ; CONVERSION ; PROFILES ; CLIMATE
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/326843
作者单位	[Gao, Guangyao; Tuo, Dengfeng; Han, Xiaoyang; Fu, Bojie] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China; [Gao, Guangyao; Fu, Bojie] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Han, Xiaoyang] Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China; [Jiao, Lei] Shaanxi Normal Univ, Sch Geog & Tourism, Xian 710119, Shaanxi, Peoples R China; [Li, Junran] Univ Tulsa, Dept Geosci, Tulsa, OK 74104 USA
推荐引用方式 GB/T 7714	Gao, Guangyao,Tuo, Dengfeng,Han, Xiaoyang,et al. Effects of land-use patterns on soil carbon and nitrogen variations along revegetated hillslopes in the Chinese Loess Plateau[J]. 西北农林科技大学,2020,746.
APA	Gao, Guangyao,Tuo, Dengfeng,Han, Xiaoyang,Jiao, Lei,Li, Junran,&Fu, Bojie.(2020).Effects of land-use patterns on soil carbon and nitrogen variations along revegetated hillslopes in the Chinese Loess Plateau.SCIENCE OF THE TOTAL ENVIRONMENT,746.
MLA	Gao, Guangyao,et al."Effects of land-use patterns on soil carbon and nitrogen variations along revegetated hillslopes in the Chinese Loess Plateau".SCIENCE OF THE TOTAL ENVIRONMENT 746(2020).