IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Effects of plantation age and precipitation gradient on soil carbon and nitrogen changes following afforestation in the Chinese Loess Plateau
Han Xiaoyang1,2; Gao Guangyao2,3; Li Zongshan2,3; Chang Ruiying4; Jiao Lei5; Fu Bojie2,3
2019
Source PublicationLAND DEGRADATION & DEVELOPMENT
ISSN1085-3278
EISSN1099-145X
PagesDOI: 10.1002/ldr.3422
SubtypeArticle;Early Access
Contribution Rank4
AbstractAfforestation of degraded land significantly influences soil organic carbon (SOC) and total nitrogen (STN) sequestration. The interaction effects of plantation age and climate gradient on SOC and STN changes following afforestation are not well understood. In this study, five sites were selected along a precipitation gradient (410-600 mm yr(-1)) in the Loess Plateau. The SOC and STN stocks at a depth of 0-200 cm were measured in cropland and black locust (Robinia pseudoacacia L.) forests with different plantation ages, that is, young forest (<15 years), middle-aged forest (15-25 years), and old forest (>25 years). The SOC and STN stocks in the 0- to 200-cm profiles of young forest, middle-aged forest, and cropland increased significantly with mean annual precipitation (p < .05), whereas the increasing trend of the SOC stocks of old forest was not significant, indicating an age-dependent change in the SOC and STN stocks across the precipitation gradient. The SOC stock change ( increment SOC) following afforestation increased with mean annual precipitation in young forest, but it had a decreasing trend in middle-aged and old forests. The STN stock changes ( increment STN) in the three forests were negative at most sites, and they all decreased along the precipitation gradient. There were significant positive correlations between increment SOC and increment STN (p < .01), and 1-g STN stock accumulation was accompanied by 8.40-, 6.10-, and 10.48-g SOC accumulation for young forest, middle-aged forest, and old forest, respectively. The different patterns of SOC and STN stock changes should be incorporated into soil C and N modelling and estimation.
Keywordafforestation Loess Plateau plantation age precipitation gradient soil C and N stocks
DOI10.1002/ldr.3422
Indexed BySCI
Language英语
WOS IDWOS:000483891300001
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/26961
Collection山地表生过程与生态调控重点实验室
Corresponding AuthorGao Guangyao
Affiliation1.Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China;
2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China;
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China;
4.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Sichuan, Peoples R China;
5.Shaanxi Normal Univ, Sch Geog & Tourism, Xian 710119, Shaanxi, Peoples R China
Recommended Citation
GB/T 7714
Han Xiaoyang,Gao Guangyao,Li Zongshan,et al. Effects of plantation age and precipitation gradient on soil carbon and nitrogen changes following afforestation in the Chinese Loess Plateau[J]. LAND DEGRADATION & DEVELOPMENT,2019:DOI: 10.1002/ldr.3422.
APA Han Xiaoyang,Gao Guangyao,Li Zongshan,Chang Ruiying,Jiao Lei,&Fu Bojie.(2019).Effects of plantation age and precipitation gradient on soil carbon and nitrogen changes following afforestation in the Chinese Loess Plateau.LAND DEGRADATION & DEVELOPMENT,DOI: 10.1002/ldr.3422.
MLA Han Xiaoyang,et al."Effects of plantation age and precipitation gradient on soil carbon and nitrogen changes following afforestation in the Chinese Loess Plateau".LAND DEGRADATION & DEVELOPMENT (2019):DOI: 10.1002/ldr.3422.
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