| 黄土高原中国松人工林演替过程中的土壤微生物和酶活性 |
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| 引用本文： | YUAN Bing-Cheng,YUE Dong-Xia. 黄土高原中国松人工林演替过程中的土壤微生物和酶活性[J]. 土壤圈, 2012, 22(1): 1-12. DOI: 10.1016/S1002-0160(11)60186-0 |
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| 作者姓名： | YUAN Bing-Cheng YUE Dong-Xia |
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| 作者单位： | School of Real Estate, Beijing Normal University Zhuhai Campus, Zhuhai 519087 (China);MOE Key Laboratory of Western China's Environmental System, Lanzhou University, Lanzhou 730000 (China) |
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| 基金项目： | Supported by the National Natural Science Foundation of China (Nos. 41171154 and 41021091);the National KeyTechnologies R&D Program of China (Nos. 2011BAK12B05 and 2011BAK12B08);the Program for New Century ExcellentTalents in University (No. NECT-09-0449);the Discipline Innovation S&T Program in Higher Learning Institutions(111 Program);the Ministry of Education & the State Administration of Foreign Experts Affairs, China (No. B06026) |
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| 摘 要： | Successional and seasonal effects on soil microbial and enzymatic properties were studied in Chinese pine (Pinus tabu- laeformis) plantations in an age sequence of 3-, 7-, 13-, 21- and 28-year-old in northern Ziwuling region in the middle of Loess Plateau, China. The results indicated that plantation age and season affected soil microbial and enzymatic parameters significantly. Soil organic C, total N, microbial biomass C, microbial quotient, basal respiration, dehydrogenase, N-α-benzoyl-L-argininamide (BAA)-protease, urease and β-glucosidase increased quickly and tended to be highest at PF21 (21-year plantation), thereafter they remained nearly at a constant level, whereas the metabolic quotient (qCO 2 ) showed an initial increase and then decreased gradually. Measures of these soil properties showed significant seasonal fluctuations except for organic C and total N, which were found to be relatively stable throughout the study period, and the seasonal distributions were autumn spring summer winter for microbial biomass C, microbial quotient, dehydrogenase, and β-glucosidase; autumn summer spring winter for BAA-protease and urease; and summer autumn spring winter for basal respiration and qCO 2 . Significant season × age interaction was observed for biomass C, basal respiration, dehydrogenase and BAA-protease.
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| 关 键 词： | dehydrogenase metabolic quotient microbial biomass seasonality soil basal respiration |
| 收稿时间： | 2011-07-26 |
Soil microbial and enzymatic activities across a chronosequence of Chinese pine plantation development on the Loess Plateau of China |
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| YUAN Bing-Cheng and YUE Dong-Xia. Soil microbial and enzymatic activities across a chronosequence of Chinese pine plantation development on the Loess Plateau of China[J]. Pedosphere, 2012, 22(1): 1-12. DOI: 10.1016/S1002-0160(11)60186-0 |
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| Authors: | YUAN Bing-Cheng and YUE Dong-Xia |
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| Affiliation: | School of Real Estate, Beijing Normal University Zhuhai Campus, Zhuhai 519087 (China);MOE Key Laboratory of Western China's Environmental System, Lanzhou University, Lanzhou, 730000 (China) |
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| Abstract: | Successional and seasonal effects on soil microbial and enzymatic properties were studied in Chinese pine (Pinus tabu- laeformis) plantations in an age sequence of 3-, 7-, 13-, 21- and 28-year-old in northern Ziwuling region in the middle of Loess Plateau, China. The results indicated that plantation age and season affected soil microbial and enzymatic parameters significantly. Soil organic C, total N, microbial biomass C, microbial quotient, basal respiration, dehydrogenase, N-α-benzoyl-L-argininamide (BAA)-protease, urease and β-glucosidase increased quickly and tended to be highest at PF21 (21-year plantation), thereafter they remained nearly at a constant level, whereas the metabolic quotient (qCO 2 ) showed an initial increase and then decreased gradually. Measures of these soil properties showed significant seasonal fluctuations except for organic C and total N, which were found to be relatively stable throughout the study period, and the seasonal distributions were autumn > spring > summer > winter for microbial biomass C, microbial quotient, dehydrogenase, and β-glucosidase; autumn > summer > spring > winter for BAA-protease and urease; and summer > autumn > spring > winter for basal respiration and qCO 2 . Significant season × age interaction was observed for biomass C, basal respiration, dehydrogenase and BAA-protease. |
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| Keywords: | dehydrogenase metabolic quotient microbial biomass seasonality soil basal respiration |
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