当前位置: 首页 > 文章 > 火干扰对喀纳斯泰加林土壤化学性质的影响 贵州农业科学 2019 (7) 148-152
Position: Home > Articles > 火干扰对喀纳斯泰加林土壤化学性质的影响 Guizhou Agricultural Sciences 2019 (7) 148-152

火干扰对喀纳斯泰加林土壤化学性质的影响

作  者:
刘小菊
单  位:
新疆农业职业技术学院园林科技学院
关键词:
林火烈度;土壤;恢复时间;化学性质;泰加林
摘  要:
为喀纳斯泰加林的可持续经营管理提供理论指导,以其39a和49a的火烧迹地为研究对象,通过样地调查和分析,研究不同林火烈度和火后恢复时间对土壤化学性质的影响.结果表明:土壤有机碳、全氮和碱解氮含量随林火烈度的增强呈递减趋势,随火后恢复时间延长呈增加趋势;土壤全磷、速效磷、全钾和速效钾含量随林火烈度与恢复时间的变化无明显规律.喀纳斯泰加林火烧迹地的土壤养分恢复到火前水平其高烈度林火比中、低烈度林火需要更长的时间,0~10cm的土层比10~25cm土层对林火烈度的响应更强烈.
作  者:
LIU Xiaoju;Landscape Technical Faculty,Xinjiang Agricultural Vocational and Technical College;College of Forestry and Horticulture,Xinjiang Agricultural University;
关键词:
fire severity;;soil;;recovery year;;chemical property;;Taiga
摘  要:
The effects of different fire severity and post-fire recovery years on soil chemical properties of Taiga burned area after 39 and 49 years were analyzed by sample-plot survey to provide the theoretical guidance for sustainable management of Taiga.Result:The content of soil organic carbon,total nitrogen and available nitrogen shows a gradually declining trend with increase of fire severity but an increasing trend with extension of post-fire recovery years.The content of soil total phosphorus,rapid available phosphorus,total potassium and rapid available potassium presents no obvious regular patterns with variation of fire severity and recovery years.The soil nutrient level in Taiga burned area after high fire severity needs more recovery years to reach the soil nutrient level before forest fire compared with after medium and low fire severity.The soil with 0-10 cm depth responds higher than soil with 10-25 cm depth to fire severity in soil nutrient level.

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