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Soil C:N:P stoichiometry in plantations of N-fixing black locust and indigenous pine, and secondary oak forests in Northwest China
Cao, Yang1,2; Zhang, Ping3; Chen, Yunming1,2
2018-04-01
Source PublicationJOURNAL OF SOILS AND SEDIMENTS
ISSN1439-0108
Volume18Issue:4Pages:1478-1489
Corresponding AuthorChen, Yunming(ymchen@ms.iswc.ac.cn)
AbstractSoil nutrient concentrations and stoichiometry are important indicators of plant growth, terrestrial productivity, and ecosystem functioning. Nevertheless, little is known about the vertical distribution and the environmental factors influencing the spatial patterns of different forest types under the "Grain for Green" program and the "Natural Forest Resources Protection" project in Northwest of China. We collected 114 soil profile samples within a 0-100-cm depth from black locust and Chinese pine plantations, and secondary oak forests. We determined the vertical distributions of soil organic carbon (SOC), total nitrogen (TN), total phosphorus (TP), and their ratios along environmental gradients in Shaanxi Province, Northwest China. The results showed that both SOC and TN concentrations decreased exponentially within the soil profiles of the three forest types, but there was minimal change in TP. Significant differences in SOC, TN, and TP were found in the surface soil layers among the forest types. Both SOC and TN were relatively low in the N-fixing black locust plantations and TP was comparatively low in the Chinese pine plantations. The C:N:P ratios decreased with increasing soil depth for the three forest types. These ratios were comparatively high in the Chinese pine plantations, relatively low in the black locust plantations, and moderate in the oak forests. The differences in the ratios among the three forest types were more significant in surface soil than in deep soil. Precipitation was positively correlated with the concentrations of SOC and TN and the ratios of C:N:P. Temperature was negatively correlated with concentrations of SOC and TN and the ratios of C:N:P across all soil depths. A log-transformed linear C-N relationship was found for all three forest types, suggesting a well-constrained coupling between the levels of the two elements. Our results demonstrated the effect of different tree species on soil C:N:P ratios and their controlling factors within soil profiles along environmental gradients. The secondary oak forest accumulated soil C and N more effectively than the plantations. The Chinese pine plantations were relatively more susceptible to P limitation. Therefore, the mechanism of different plant species on soil biogeochemical processes at the whole soil profile level must be considered when developing forest management strategies and implementing vegetation restoration projects.
KeywordForest types Northwest China Soil nutrient status Spatial variability Vertical distribution
DOI10.1007/s11368-017-1884-0
WOS KeywordLAND-USE CHANGE ; ORGANIC-CARBON ; LOESS PLATEAU ; VERTICAL-DISTRIBUTION ; ROBINIA-PSEUDOACACIA ; P STOICHIOMETRY ; NITROGEN STOICHIOMETRY ; MICROBIAL BIOMASS ; SPECIES-DIVERSITY ; SPATIAL-PATTERNS
Indexed BySCI
Language英语
Funding ProjectNational Key R&D Program of China[2016YFC0501703] ; CAS Light of West China Program ; National Nature Science Foundation of China[41371506] ; National Nature Science Foundation of China[41201088]
Funding OrganizationNational Key R&D Program of China ; CAS Light of West China Program ; National Nature Science Foundation of China
WOS Research AreaEnvironmental Sciences & Ecology ; Agriculture
WOS SubjectEnvironmental Sciences ; Soil Science
WOS IDWOS:000428619800025
PublisherSPRINGER HEIDELBERG
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/60237
Collection中国科学院地理科学与资源研究所
Corresponding AuthorChen, Yunming
Affiliation1.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China
2.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
3.Northwest A&F Univ, Coll Forestry, Yangling 712100, Shaanxi, Peoples R China
Recommended Citation
GB/T 7714
Cao, Yang,Zhang, Ping,Chen, Yunming. Soil C:N:P stoichiometry in plantations of N-fixing black locust and indigenous pine, and secondary oak forests in Northwest China[J]. JOURNAL OF SOILS AND SEDIMENTS,2018,18(4):1478-1489.
APA Cao, Yang,Zhang, Ping,&Chen, Yunming.(2018).Soil C:N:P stoichiometry in plantations of N-fixing black locust and indigenous pine, and secondary oak forests in Northwest China.JOURNAL OF SOILS AND SEDIMENTS,18(4),1478-1489.
MLA Cao, Yang,et al."Soil C:N:P stoichiometry in plantations of N-fixing black locust and indigenous pine, and secondary oak forests in Northwest China".JOURNAL OF SOILS AND SEDIMENTS 18.4(2018):1478-1489.
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