IB-CAS  > 植被与环境变化国家重点实验室
Shrub encroachment increases soil carbon and nitrogen stocks in temperate grasslands in China
Li, He3; Shen, Haihua4; Zhou, Luhong; Zhu, Yankun4; Chen, Leiyi; Hu, Huifeng; Zhang, Pujin; Fang, Jingyun1,2
2019
Source PublicationLAND DEGRADATION & DEVELOPMENT
ISSN1085-3278
Volume30Issue:7Pages:756-767
AbstractShrub encroachment has significant impacts on carbon (C) and nitrogen (N) dynamics of grassland ecosystems, but, how it influences soil organic C (SOC) and soil total N (STN) stocks of grasslands is not well documented, especially in deep soils. Here, we examined these effects by investigating the SOC density (SOCD) and the STN density (STND) at depths of up to 5m in shrub patches and grassy matrix at 18 grassland sites in Inner Mongolia, China. Our results revealed that 44.0-54.1% of SOC and 65.5-74.8% of STN were stored in soil layers of 100cm to 500cm, and that shrub encroachment resulted in a significant accumulation of SOC and STN in shrub patches. The mean SOCD at 0-500cm soil layers in shrub patches and grassy matrix was 11.34 and 8.39kgCm(-2), respectively, and the mean STND was 2.45 and 2.13kgNm(-2), respectively. These differences between the shrub patches and grassy matrix were equivalent to an increase in the mean SOC and STN stocks of 2.95kgCm(-2) and 0.32kgNm(-2), respectively. Increases in SOCD and STND mainly occurred in 30-300cm soil layers, and varied between typical grassland and desert grassland. The changes in SOCD and STND exhibited significant negative correlations with temperature and pH and positive correlations with precipitation and plant biomass. Our findings suggest that shrub encroachment can significantly accumulate SOC and STN in deep soils in temperate grasslands, which helps to understand soil C and N dynamics in shrub-encroached grasslands.
Keyworddeep soils land cover change shrub encroachment soil organic carbon soil total nitrogen
Subject AreaEnvironmental Sciences ; Soil Science
DOI10.1002/ldr.3259
Indexed BySCI
Language英语
WOS KeywordWOODY PLANT ENCROACHMENT ; INNER MONGOLIAN GRASSLANDS ; LAND-USE CHANGE ; ORGANIC-CARBON ; TEMPORAL DYNAMICS ; BULK-DENSITY ; ECOSYSTEM ; DEEP ; CLIMATE ; IMPACTS
WOS Research AreaEnvironmental Sciences & Ecology ; Agriculture
WOS IDWOS:000465039700004
PublisherWILEY
SubtypeArticle
Publication PlaceHOBOKEN
EISSN1099-145X
Funding OrganizationNational Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31330012, 31470525, 41807319] ; National Basic Research Program of China on Global ChangeNational Basic Research Program of China [2014CB954001] ; Key Research Program of Frontier Sciences, CAS [QYZDY-SSW-SMC011]
Corresponding Author Emailshen.haihua@ibcas.ac.cn ; jyfang@urban.pku.edu.cn
Citation statistics
Cited Times:16[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ibcas.ac.cn/handle/2S10CLM1/19686
Collection植被与环境变化国家重点实验室
Affiliation1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
2.Peking Univ, Dept Ecol, Coll Urban & Environm, Minist Educ, Beijing 100871, Peoples R China
3.Peking Univ, Minist Educ, Key Lab Earth Surface Proc, Beijing 100871, Peoples R China
4.Jiangsu Normal Univ, Sch Geog Geomat & Planning, Xuzhou 221116, Jiangsu, Peoples R China
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Li, He,Shen, Haihua,Zhou, Luhong,et al. Shrub encroachment increases soil carbon and nitrogen stocks in temperate grasslands in China[J]. LAND DEGRADATION & DEVELOPMENT,2019,30(7):756-767.
APA Li, He.,Shen, Haihua.,Zhou, Luhong.,Zhu, Yankun.,Chen, Leiyi.,...&Fang, Jingyun.(2019).Shrub encroachment increases soil carbon and nitrogen stocks in temperate grasslands in China.LAND DEGRADATION & DEVELOPMENT,30(7),756-767.
MLA Li, He,et al."Shrub encroachment increases soil carbon and nitrogen stocks in temperate grasslands in China".LAND DEGRADATION & DEVELOPMENT 30.7(2019):756-767.
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