| 东北羊草草原土壤微生物生长动态模型的研究 |
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| 引用本文： | 张崇邦.东北羊草草原土壤微生物生长动态模型的研究[J].草地学报,2002,10(2):134-138. |
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| 作者姓名： | 张崇邦 |
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| 作者单位： | 浙江省台州学院生化系, 临海, 317000 |
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| 基金项目： | 国家自然科学基金资助项目一部分 (编号 :93 890 0 9-I) |
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| 摘 要： | 研究东北羊草草原杂草土壤微生物生物量、呼吸速率以及土壤环境因子的季节动态。结果表明,杂草土壤微生物生物量、呼吸速率具有明显的季节变化规律,最大值出现在 8月(12.78×10-3g·g-1干土,16.24×10-3g·g-1干土·d-1),呈单峰曲线变化趋势。主要与土壤营养成分、水热条件有密切关系。建立了杂草土壤微生物生长模型--IBM模型:Mt+△t=Mto1+(0.38rn- RDR△t] 。杂草土壤环境因子综合作用指数 rn 变化范围在0.1475-0.4032之间,具有重要的生态学意义。
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| 关 键 词： | 杂草草甸 土壤 微生物生物量 IRM模型 |
| 文章编号： | 1007-0435(2002)02-0134-05 |
| 收稿时间： | 2001-10-25 |
| 修稿时间： | 2001年10月25日 |
Study on the Seasonal Dynamics Model of Soil Microbial Growth on the Leymus chinensis Meadow in the Northeast of China |
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| ZHANG Chong,bang.Study on the Seasonal Dynamics Model of Soil Microbial Growth on the Leymus chinensis Meadow in the Northeast of China[J].Acta Agrestia Sinica,2002,10(2):134-138. |
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| Authors: | ZHANG Chong bang |
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| Institution: | Department of Biology and Chemistry, Taizhou College, Linhai, Zhejiang, 317000, China |
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| Abstract: | The seasonal dynamics of microbial biomass,respiration rate,soil ecological factors on the Leymus chinensis meadow were studied.The seasonal patterns of microbial biomass and respiration rate were found to follow a relief curve.In August,there is a biggest value which were 12.78×10-3g·g-1(dry soil),16.24×10-3g·g-1(dry soil)·d-1.The variation of the microbial biomass curve mainly related with nutritional components,water content and temperature.In addition,the integrative effect of ecological factors upon microbes,estimated by the IRM model,was also studied:Mt+△t=Mto+(0.38rn-RDR△t].The integrated index of the effect of weeds soil ecological factors upon microbial biomass was defined as rn which is from 0.1457 to 0.4032,and has a ecological importance. |
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| Keywords: | Weeds meadow Soil microbes Microbial biomass IRM model |
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