Latitudinal patterns and influencing factors of soil humic carbon fractions from tropical to temperate forests
Xu, L; Wang, CY; Zhu, JX; Gao, Y; Li, ML; Lv, YL; Yu, GR; He, NP
2018
Source PublicationJOURNAL OF GEOGRAPHICAL SCIENCES
ISSN1009-637X
Volume28Issue:1Pages:15-30
AbstractSoil humic carbon is an important component of soil organic carbon (SOC) in terrestrial ecosystems. However, no study to date has investigated its geographical patterns and the main factors that influence it at a large scale, despite the fact that it is critical for exploring the influence of climate change on soil C storage and turnover. We measured levels of SOC, humic acid carbon (HAC), fulvic acid carbon (FAC), humin carbon (HUC), and extractable humus carbon (HEC) in the 0-10 cm soil layer in nine typical forests along the 3800-km North-South Transect of Eastern China (NSTEC) to elucidate the latitudinal patterns of soil humic carbon fractions and their main influencing factors. SOC, HAC, FAC, HUC, and HEC increased with increasing latitude (all P < 0.001), and exhibited a general trend of tropical < subtropical < temperate. The ratios of humic C fractions to SOC were 9.48%-12.27% (HAC), 20.68%-29.31% (FAC), and 59.37%-61.38% (HUC). Climate, soil texture, and soil microbes jointly explained more than 90% of the latitudinal variation in SOC, HAC, FAC, HEC, and HUC, and interactive effects were important. These findings elucidate latitudinal patterns of soil humic C fractions in forests at a large scale, and may improve models of soil C turnover and storage.
SubtypeJournal
Keywordhumic acid carbon humin latitude pattern soil organic carbon NSTEC
Subject AreaPhysical Geography
WOS Subject ExtendedGeography, Physical
WOS KeywordNORTH-SOUTH TRANSECT ; EASTERN CHINA NSTEC ; ORGANIC-MATTER ; MASS-SPECTROMETRY ; CLIMATE-CHANGE ; SUBSTANCES ; DECOMPOSITION ; TURNOVER ; DYNAMICS ; TILLAGE
Indexed BySCI
Language英语
WOS IDWOS:000418823600002
PublisherSCIENCE PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/43957
Collection生态系统网络观测与模拟院重点实验室_生态网络实验室
Recommended Citation
GB/T 7714
Xu, L,Wang, CY,Zhu, JX,et al. Latitudinal patterns and influencing factors of soil humic carbon fractions from tropical to temperate forests[J]. JOURNAL OF GEOGRAPHICAL SCIENCES,2018,28(1):15-30.
APA Xu, L.,Wang, CY.,Zhu, JX.,Gao, Y.,Li, ML.,...&He, NP.(2018).Latitudinal patterns and influencing factors of soil humic carbon fractions from tropical to temperate forests.JOURNAL OF GEOGRAPHICAL SCIENCES,28(1),15-30.
MLA Xu, L,et al."Latitudinal patterns and influencing factors of soil humic carbon fractions from tropical to temperate forests".JOURNAL OF GEOGRAPHICAL SCIENCES 28.1(2018):15-30.
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