| 黄土高原某些耕作土壤中土壤微生物生物量C、N与矿化N的关系 |
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| 引用本文： | ZHOU Jian-Bin,LI Sheng-Xiu. 黄土高原某些耕作土壤中土壤微生物生物量C、N与矿化N的关系[J]. 土壤圈, 1998, 8(4): 349-354 |
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| 作者姓名： | ZHOU Jian-Bin LI Sheng-Xiu |
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| 作者单位： | Department of Soil Science and Agrochemistry, Northwest Agricultural University, Yangling 712100 (China);Department of Soil Science and Agrochemistry, Northwest Agricultural University, Yangling 712100 (China) |
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| 基金项目： | *1Project Supported by the National Natural Science Foundation of China (No.39470409) and the State Key Laboratory of Soil Erosion and Dryland Farlning on Loess Plateau, Northwestern Institute of Soil and Water Conservation, the Chinese Academy of Sciences. |
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| 摘 要： | The chloroform fumigation-incubation method was used to measure the soil microbial biomass C (SMBC) and N (SMBN) in 16 loessial soils sampled from Ansai, Yongshou and Yangling in Shaanxi Province. The SMBC contents in the soils ranged from 75.9 to 301.0 μg C g-1 with an average of 206.1 μg C g-1, accounting for 1.36%~6.24% of the total soil organic C with an average of 3.07%, and the SMBN contents from 0.51 to 68.40 μg N g-1 with an average of 29.4 μg N g-1, accounting for 0.20%~5.65% of the total N in the soils with an average of 3.36%. A close relationship was found between SMBC and SMBN, and they both were positively correlated with total organic C, total N, NaOH hydrolizable N and mineralizable N. These results confirmed that soil microbial biomass had a comparative role in nutrient cycles of soils.
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| 关 键 词： | carbon mineralizable N nitrogen soil microbial biomass |
Relationship between soil microbial biomass C and N and mineralizable nitrogen in some arable soils on the Loess Plateau |
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| ZHOU Jian-Bin and LI Sheng-Xiu. Relationship between soil microbial biomass C and N and mineralizable nitrogen in some arable soils on the Loess Plateau[J]. Pedosphere, 1998, 8(4): 349-354 |
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| Authors: | ZHOU Jian-Bin and LI Sheng-Xiu |
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| Affiliation: | Department of Soil Science and Agrochemistry, Northwest Agricultural University, Yangling 712100, China. |
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| Abstract: | The chloroform fumigation-incubation method was used to measure the soil microbial biomass C (SMBC) and N (SMBN) in 16 loessial soils sampled from Ansai, Yongshou and Yangling in Shaanxi Province, China. The SMBC contents in the soils ranged from 75.9 to 301.0 ug C g-1 with an average of 206.1 ug C g-1, accounting for 1.36-6.24% of the total soil organic C with an average of 3.07%, and the SMBN contents from 0.51 to 68.40 ug N g-1 with an average of 29.4 ug N g-1, accounting for 0.20-5.65% of the total N in the soils with an average of 3.36%. A close relationship was found between SMBC and SMBN, and they both were positively correlated with total organic C, total N, NaOH hydrolisable N and mineralizable N. |
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| Keywords: | carbon mineralizable N nitrogen soil microbial biomass |
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