| 草原火烧后土壤养份含量的变化 |
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| 引用本文： | 周道玮,周维.草原火烧后土壤养份含量的变化[J].东北师大学报(自然科学版),1999(1):111-117. |
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| 作者姓名： | 周道玮 周维 |
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| 作者单位： | [1]东北师范大学国家草地生态工程实验室 [2]吉林省洮南市草原工作站 |
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| 基金项目： | 农业部“八五”重点科技项目 |
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| 摘 要： | 草原不同时间、不同频次火烧后，土壤的金属元素和营养物质发生很大变化。火烧后，土壤中大多数金属元素和表层水解性氮含量有所增加，而速效钾、全氮和金属铜含量有所降底。火烧后，铁、钾和镁在土壤中有一明显积累层，该层随时间推移而下移。
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| 关 键 词： | 草原 火烧 养份含量 土壤 |
Burning Effects on Soil Nutrients in a Hulunbeier Grassland |
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| Zhou Daowei,Jiang Shicheng,Guo Ping,Zhou Wei.Burning Effects on Soil Nutrients in a Hulunbeier Grassland[J].Journal of Northeast Normal University (Natural Science Edition),1999(1):111-117. |
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| Authors: | Zhou Daowei Jiang Shicheng Guo Ping Zhou Wei |
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| Institution: | Zhou Daowei 1 Jiang Shicheng 1 Guo Ping 1 Zhou Wei 2 |
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| Abstract: | Following grassland burning in Hulunbeier steppe,the soil nutrients changed. Different burning time and different burning frequency caused different results.In general,metal elements in soil and hydrolysis nitrogen in soil surface increased.But total nitrogen ,instant potassium and cooper decreased.In burned site, iron, potassium and magnesium had obvious accumulative layer on profile. |
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| Keywords: | grassland burning soil nutrients Hulunbeier |
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