IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Variations in soil phosphorus biogeochemistry across six vegetation types along an altitudinal gradient in SW China
Zhou, Jun; Wu, Yanhong; Bing, Haijian; Yang, Zijiang; Wang, Jipeng; Sun, Hongyang; Sun, Shouqin; Luo, Ji
Corresponding AuthorWu, Yanhong
2016
Source PublicationCATENA
ISSN0341-8162
EISSN1872-6887
Volume142Pages:102-111
SubtypeArticle
AbstractThe impacts and relative importance of temperature, precipitation, lithology, soil properties, vegetation type and microbial activity on soil P biogeochemistry along altitudinal gradients are poorly understood. Our aim is to reveal the variations and main driving factors governing soil P forms across six different vegetation types along an altitudinal gradient (2032-4235 m asl) on Mt. Gongga, southwest China. Soil P forms were measured using a sequential fractionation technique. The results showed that the spatial distributions of total P and organic P clearly exhibited altitudinal variations along the gradient. The total P stocks in the 3838-4235 m zones were significantly higher than those in the 2032-3614 m zones. This pattern is likely influenced by climate, soil erosion, total P content in the parent material and vegetation type. Unlike the total P stock, the concentrations and stocks of available Pin the surface soils showed a parabolic pattern with altitude, with maximums at the 3060 m site and minimums at the lowest site. The Ca-Pi concentrations (extracted by 1 M HCl solutions) displayed a spatial pattern opposite to that of the available P. The NaOH-Pi concentrations changed little with altitude and accounted for a small part of the total P. The Ca-Pi represented the largest part of the total Pat the 2032 m site and in the alpine zones, whereas the organic P contributed the largest portion of total P in the sub-alpine zones. A redundancy analysis showed that the general spatial pattern of all the P forms was mainly related to soil pH, vegetation and soil organic matter. In particular, the soil pH, which was mainly controlled by vegetation type and precipitation, significantly influenced the altitudinal pattern of Ca-Pi. The effect of soil pH, perhaps coupled with the amount of P returned by litter production, is a crucial factor in the parabolic pattern of available P between 2032 and 4235 m asl. Furthermore, in the 3060-4235 m zone, temperature becomes an additional important factor governing the pattern of available P due to its influence on litter decomposition rates. These results emphasize the central role of vegetation in regulating soil P biogeochemistry along the altitudinal gradient by affecting soil properties and litter production. (C) 2016 Elsevier B.V. All rights reserved.
KeywordAvailable Phosphorus Phosphorus Forms Nutrients Cycling Geochemical Processes Biological Processes Mountain Ecosystems
Subject Area元素地球化学 ; 生物地球化学 ; 土壤化学
WOS HeadingsScience & Technology ; Physical Sciences ; Life Sciences & Biomedicine
DOI10.1016/j.catena.2016.03.004
URL查看原文
WOS Subject ExtendedGeology ; Agriculture ; Water Resources
Indexed BySCI
WOS KeywordMONTANE FOREST SOILS ; GONGGA MOUNTAIN ; MICROBIAL BIOMASS ; NUTRIENT LIMITATION ; ORGANIC PHOSPHORUS ; GLACIER FORELAND ; RAIN-FOREST ; FRACTIONATION ; PEDOGENESIS ; CHRONOSEQUENCE
Language英语
Quartile3区
TOP
WOS SubjectGeosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS IDWOS:000376714200009
Funding OrganizationNational Natural Science Foundation of China(41401253 ; Chinese Academy of Sciences(KZZD-EW-TZ-06) ; 41272200)
Citation statistics
Cited Times:21[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/14188
Collection山地表生过程与生态调控重点实验室
AffiliationChinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Zhou, Jun,Wu, Yanhong,Bing, Haijian,et al. Variations in soil phosphorus biogeochemistry across six vegetation types along an altitudinal gradient in SW China[J]. CATENA,2016,142:102-111.
APA Zhou, Jun.,Wu, Yanhong.,Bing, Haijian.,Yang, Zijiang.,Wang, Jipeng.,...&Luo, Ji.(2016).Variations in soil phosphorus biogeochemistry across six vegetation types along an altitudinal gradient in SW China.CATENA,142,102-111.
MLA Zhou, Jun,et al."Variations in soil phosphorus biogeochemistry across six vegetation types along an altitudinal gradient in SW China".CATENA 142(2016):102-111.
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