| 草原火烧后植物群落生产及其产量空间结构的变化 |
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| 引用本文： | 周道玮 李亚芹. 草原火烧后植物群落生产及其产量空间结构的变化[J]. 东北师大学报(自然科学版), 1999, 0(4): 83-90 |
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| 作者姓名： | 周道玮 李亚芹 |
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| 作者单位： | 东北师范大学国家草地生态工程实验室!吉林长春，130024，长春医学高等专科学校生物教研室!吉林长春，130031，东北师范大学国家草地生态工程实验室!吉林长春，130024 |
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| 基金项目： | 农业部“九五”重点科技 |
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| 摘 要： | 研究了草原火烧后植物群落生产及其产量空间结构的变化。结果表明，草原春季火一，由于当降水充分，火烧地植物群落产生提高；第二年降水不足，火 植物群落产量低于未烧地。火烧地植群落地上生产量的绝对增长率高于未烧地。火 植物群落地下生物量在火烧后当年升高，第二年降低。
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| 关 键 词： | 草原 火烧 空间结构 地下生物量 植物群落 |
Changes of community production and it's space structure following grassland burning in Hulunbeier steppe |
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| ZHOU Dao-wei, LI Ya-qin,SUN Gang. Changes of community production and it's space structure following grassland burning in Hulunbeier steppe[J]. Journal of Northeast Normal University (Natural Science Edition), 1999, 0(4): 83-90 |
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| Authors: | ZHOU Dao-wei LI Ya-qin SUN Gang |
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| Abstract: | Changes of plant community production and the space structure following grassland burning were studied in Hulunber steppe. After grassland burning in spring, the production of plant community in burned site increased due to rich precipitation in the first year, and decreased due to short precipitation in the second year. The absolute growth rate of plant community's aboveground production in burned site was higher than that in unburned site. Following burning, the stem and leave mass of the plant community in burned site exceeded that in unburned site. The underground biomass of the plant community in burned site increased in the first year of burning, and decreased in the second year of burning. |
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| Keywords: | grassland burning production space structure underground biomass |
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