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Authors Yang, HC; Wang, JY; Zhang, FH
Author Full Name Yang, Haichang; Wang, Jingya; Zhang, Fenghua
Title Soil aggregation and aggregate-associated carbon under four typical halophyte communities in an arid area
Source ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
Language English
Document Type Article
Author Keywords Soil aggregate; Soil organic C; Soil microbial biomass C; Halophyte community; Arid region
Keywords Plus MICROBIAL BIOMASS-C; LAND-USE SYSTEMS; ORGANIC-CARBON; NO-TILLAGE; TEA PLANTATION; SIZE-FRACTIONS; LOESS PLATEAU; NITROGEN; STABILITY; DYNAMICS
Abstract The soil microbial biomass carbon (MBC) is considered as a sensitive index of soil carbon ecosystem. The distribution of aggregate-associated MBC determines the capacity of the soil to store soil organic carbon (SOC). We compared soil aggregate-associated SOC and aggregate-associated MBC under four halophyte communities: Karelinia caspia (Pall.) Less. (Abbr. K. caspia), Bassia dasyphylla (Fisch. et C. A. Mey.) Kuntze. (Abbr. B. dasyphylla), Haloxylon ammodendron (C. A. Mey.) Bunge. (Abbr. H. ammodendron), and Tamarix ramosissima Lour (Abbr. T. ramosissima) on an alluvial fan in the Manasi River Basin, Xinjiang, China. The specific objectives of the study were to determine which aggregate size fraction was the most important for MBC and SOC retention in these soils of four halophyte communities. The results showed that the 0.053-0.25 mm fraction contained 47 to 75 % of the total soil mass. The amount of soil in the 0.053-0.25 mm fraction was significantly greater than that in the > 0.25 and the < 0.053 mm fractions. The > 0.25 and the < 0.053 mm fractions contained 7.8 to 43.0 % of the soil mass. Aggregate-associated SOC concentrations ranged from 1.70 to 13.68 g kg(-1), and the aggregate-associated SOC were the highest under the H. ammodendron and T. ramosissima communities. The aggregate-associated MBC ranged from 55.26 to 217.11 g kg(-1), and the aggregate-associated MBC were higher under the K. caspia and B. dasyphylla communities. The aggregate-associated SOC concentrations were significantly higher in the > 0.25 and the < 0.053 mm fractions than in the 0.053-0.25 mm fraction. The aggregate-associated MBC in the 20-40 cm depth was consistent with its law. However, in the 0-20 cm depth, the aggregate-associated MBC concentrations were significantly higher in the > 0.25 mm fraction than the other two aggregate fractions, and there were no significant differences in 0.25-0.053 or < 0.053 mm fraction. Correlation analyses showed that the aggregate-associated MBC positively correlated with aggregate-associated SOC in > 0.25 mm fraction (P < 0.01). The microbial entropies ranged from 1.12 to 4.17 %, and the microbial entropy generally was higher in > 0.25 mm fraction. Overall, the H. ammodendron community had the higher aggregate-associated SOC and aggregate-associated MBC, but the microbial entropy was low. This suggested that among the four halophyte communities in this study, the H. ammodendron community could be beneficial for soil carbon storage in arid regions.
Author Address [Yang, Haichang; Wang, Jingya; Zhang, Fenghua] Shihezi Univ, Coll Agr, Shihezi 832003, Xinjiang, Peoples R China
Reprint Address Zhang, FH (reprint author), Shihezi Univ, Coll Agr, Shihezi 832003, Xinjiang, Peoples R China.
E-mail Address zhangfenghua6088@126.com
Funding Agency and Grant Number National key research and development plan [2016YFC0501406]; National Natural Science Foundation of ChinaNational Natural Science Foundation of China [31360320]; National Key Technology Research and Development Program of the Ministry of Science and Technology of ChinaNational Key Technology R&D Program [2014BAC14B03]
Funding Text This research was supported by the National key research and development plan (2016YFC0501406), the National Natural Science Foundation of China (31360320), the National Key Technology Research and Development Program of the Ministry of Science and Technology of China (2014BAC14B03). We gratefully acknowledge helpful comments by the anonymous referees who simulated significant improvements in the analysis and writing. We also thank Dr. Jeff Gale for his conscientious help with the English in this paper.
Total Times Cited Count (WoS, BCI, and CSCD) 1
Publisher SPRINGER HEIDELBERG
Publisher City HEIDELBERG
Publisher Address TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY
ISSN 0944-1344
29-Character Source Abbreviation ENVIRON SCI POLLUT R
ISO Source Abbreviation Environ. Sci. Pollut. Res.
Publication Date DEC
Year Published 2016
Volume 23
Issue 23
Beginning Page 23920
Ending Page 23929
Digital Object Identifier (DOI) 10.1007/s11356-016-7583-3
Page Count 10
Web of Science Category Environmental Sciences
Subject Category Environmental Sciences & Ecology
Document Delivery Number ED1JL
Unique Article Identifier WOS:000388601400052
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