| Title | Responses of the soil microbial catabolic profile and diversity to vegetation rehabilitation in degraded semiarid grassland |
| Publication Type | Journal Article |
| Year of Publication | 2016 |
| Authors | Yu J., Unc A., Zhang X.K, Steinberger Y. |
| Journal | Applied Soil Ecology |
| Volume | 101 |
| Pagination | 124-131 |
| Date Published | May |
| Type of Article | Article |
| ISBN Number | 0929-1393 |
| Accession Number | WOS:000375121300016 |
| Keywords | Agriculture, carbon, communities, Community level physiological, functional diversity, horqin sandy land, Labile C, MicroResp (TM) approach, mineralization, organic-matter, physiological, plantations, profile, PROFILES, quality, restoration, Soil restoration |
| Abstract | Changes in the soil labile C pools induced by vegetation rehabilitation on semiarid lands are assumed to correlate with changes in the microbial catabolic profiles. To verify this, soil was sampled under the canopies of 12-year-old (R12Y) and 30-year-old (R30Y) planted Caragana microphylla shrubs, as well as native C. microphylla shrubs, all located in the Horqin Sandy Land, China. Community Level Physiological Profiles (CLPPs) of soils were determined to reveal any qualitative and quantitative shifts in soil microbial catabolism linked with the revegetation process. water-soluble C (WSC) and hot-water extractable C (HWEC) were measured to indicate the availability of labile C pools. As the restoration proceeds, soil organic C (C-org) increased 2-3 times at the R30Y habitat compared to the R12Y habitat. The total utilization rate of the 15 C substrates also increased from 0.68 mu g CO2-C g(-1) soil h(-1) at the R12Y habitat to 4.90 mu g CO2-C g(-1) soil h(-1) at the R30Y habitat, but a slight decline in catabolic diversity, from 2.53 to 2.29, was recorded. Principal component analysis and redundancy analysis revealed that soil microbial communities colonizing the R12Y habitat exhibited an affinity to carbohydrates, which positively correlated to the relative concentration of WSC. Those colonizing the R30Y and native habitats mainly preferred carboxylic acids and 3,4-dihydroxybenzoic acid due to higher C-org content and relative concentration of HWEC. (C) 2016 Elsevier B.V. All rights reserved.
|
| Short Title | Appl. Soil Ecol.Appl. Soil Ecol. |
| Alternate Journal | Appl. Soil Ecol. |
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Yu, Jun Unc, Adrian Zhang, Xiaoke Steinberger, Yosef
National Natural Science Foundation of China [31300452, 31270669]
This study was supported by the National Natural Science Foundation of China (nos. 31300452, 31270669). We thank Mr. Yongming Luo and Dr. Pingting Guan for soil sampling and Ms. Cuiying Liang for technical assistance during the soil analysis. Special thanks to Ms. Sharon Victor for preparing the manuscript for publication. The authors are also sincerely grateful to the Editor-in-Chief and three anonymous reviewers for their insightful comments on the earlier version of the manuscript.
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Elsevier science bv
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[biblio_auth_address] => [Yu, Jun; Zhang, Xiaoke; Steinberger, Yosef] Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Peoples R China. [Unc, Adrian] Mem Univ Newfoundland, Boreal Ecosyst Res Initiat, Corner Brook, NF A2H 6P9, Canada. [Unc, Adrian] Univ Leeds, Sch Geog, Leeds LS2 9JT, W Yorkshire, England. [Steinberger, Yosef] Bar Ilan Univ, Mina & Everard Goodman Fac Life Sci, IL-529002 Ramat Gan, Israel.
Steinberger, Y (reprint author), Bar Ilan Univ, Mina & Everard Goodman Fac Life Sci, IL-529002 Ramat Gan, Israel.
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