| 利用强度对荒漠草原土壤氮循环系统的影响 |
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| 引用本文： | 高雪峰,韩国栋.利用强度对荒漠草原土壤氮循环系统的影响[J].干旱区资源与环境,2011(11):165-168. |
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| 作者姓名： | 高雪峰 韩国栋 |
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| 作者单位： | 内蒙古师范大学生命科学与技术学院;内蒙古农业大学生态环境学院; |
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| 基金项目： | 国家自然科学基金项目(30360022)资助 |
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| 摘 要： | 随着气候的变化和人类的干扰,草原退化日趋严重。文中研究了内蒙古荒漠草原不同利用强度下土壤中4类氮素转化菌,以及土壤的固氮作用、氨化作用和硝化作用强度。结果表明,轻牧区土壤中4类氮素转化菌的数量显著增加（P〉0.05）,也显著加强了土壤中的固氮作用、氨化作用和硝化作用。有利于促进土壤的氮循环;重度利用则导致草原土壤中氮素...
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| 关 键 词： | 利用强度 荒漠草原 土壤 氮循环 |
Effect of grazing intensity on soil nitrogen cycle in the desert steppe |
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| GAO Xuefeng,HAN Guodong.Effect of grazing intensity on soil nitrogen cycle in the desert steppe[J].Journal of Arid Land Resources and Environment,2011(11):165-168. |
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| Authors: | GAO Xuefeng HAN Guodong |
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| Affiliation: | GAO Xuefeng1,HAN Guodong2(1.College of Life Science and Technology,Inner Mongolia Normal University,Hohhot 010022,P.R.China,2.College of Ecology and Environment,Inner Mongolia Agricaltura University,Hohhot 010018,P.R.China) |
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| Abstract: | With climate change and human disturbance,grassland degradation is worsening.In this paper,we studied four kinds of soil nitrogen decomposing bacteria and nitrogen fixation,ammonification and nitrification of different using intensity in Inner Mongolia steppe desert.The results showed that the number of four categories of soil nitrogen bacteria increased significantly in light grazing(P>0.05),also soil nitrogen fixation,ammonification and nitrification significantly increased.Light grazing contributed to th... |
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| Keywords: | using intensity desert steppe soil nitrogen cycle |
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