Impacts of species mixture on soil nitrogen stocks in the Loess Plateau of China

doi:10.1016/j.foreco.2021.119145

	Impacts of species mixture on soil nitrogen stocks in the Loess Plateau of China
	Gong, Chen 1,4; Tan, Qingyue 3; Liu, Guobin 1,2,4; Xu, Mingxiang 1,2,4
刊名	FOREST ECOLOGY AND MANAGEMENT
	2021-07-01
卷号	491 页码:8
关键词	Mixed plantations Monocultures Soil total nitrogen stocks The Loess Plateau Meta-analysis
ISSN号	0378-1127
DOI	10.1016/j.foreco.2021.119145
通讯作者	Xu, Mingxiang(xumx@nwsuaf.edu.cn)
英文摘要	Nitrogen (N) is one of the primary limiting elements in terrestrial ecosystems, and vegetation restoration has been regarded as an effective way to increase soil total nitrogen (STN) stocks. Despite compelling evidence indicating that mixed plantations can demonstrate higher vegetation productivity and carbon (C) sequestration capacity than monocultures, the effects of mixed plantations on STN stocks remain unclear. Therefore, we conducted a meta-analysis of 128 observations from 49 peer-reviewed articles across the Loess Plateau of China to evaluate the impact of different afforestation models (i.e., mixed plantations and monocultures) on the dynamics of STN stocks in mineral soil (0?30 cm). The results showed that, compared with monocultures, mixed plantations significantly increased STN stocks by 19.3%. For different mixed types, tree-shrub mixed plantations increased more STN stocks than tree-tree mixed plantations. However, the positive effect of mixed plantations on STN stocks was significant 20 years after stand establishment. Moreover, for areas with steeper slope (>25?), lower elevation (<1200 m), and climate restricted (MAT < 8?, MAP < 500 mm), mixed plantations had more advantages in increasing STN stocks than monocultures. Additionally, the response ratio of STN stocks was negatively correlated with the initial STN stocks, response ratios of soil pH, and bulk density (BD) but positively correlated with the response ratio of soil organic carbon (SOC) stocks. Our results demonstrate that increasing tree species richness is an important strategy to increase STN stocks.
资助项目	National Key Research and Development Program of China[2017YFC0504601] ; National Key Research and Development Program of China[2017YFC0506503] ; National Natural Science Foundation of China[41771318] ; National Natural Science Foundation of China[41830758] ; West Light'' cross team project-Key Laboratory cooperation research project
WOS关键词	ORGANIC-CARBON ; PLANT DIVERSITY ; LAND-USE ; PRECIPITATION GRADIENT ; ECOSYSTEM FUNCTION ; MIXED PLANTATIONS ; TREE PLANTATIONS ; GREEN PROGRAM ; NORWAY SPRUCE ; AFFORESTATION
WOS研究方向	Forestry
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000694855500006
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China ; West Light'' cross team project-Key Laboratory cooperation research project
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/165540]
专题	中国科学院地理科学与资源研究所
通讯作者	Xu, Mingxiang
作者单位	1.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 2.Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 3.Northwest A&F Univ, Coll Forestry, Yangling 712100, Shaanxi, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Gong, Chen,Tan, Qingyue,Liu, Guobin,et al. Impacts of species mixture on soil nitrogen stocks in the Loess Plateau of China[J]. FOREST ECOLOGY AND MANAGEMENT,2021,491:8.
APA	Gong, Chen,Tan, Qingyue,Liu, Guobin,&Xu, Mingxiang.(2021).Impacts of species mixture on soil nitrogen stocks in the Loess Plateau of China.FOREST ECOLOGY AND MANAGEMENT,491,8.
MLA	Gong, Chen,et al."Impacts of species mixture on soil nitrogen stocks in the Loess Plateau of China".FOREST ECOLOGY AND MANAGEMENT 491(2021):8.