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于艳梅,徐俊增, 杨士红,卫 琦.土壤剧烈扰动条件下地面灌水对土壤呼吸的影响水资源与水工程学报[J].,2015,26(2):226-231
土壤剧烈扰动条件下地面灌水对土壤呼吸的影响
Influence of surface irrigation on soil respiration under intensively disturbed soil
  
DOI:10.11705/j.issn.1672-643X.2015.02.045
中文关键词:  土壤呼吸  土壤扰动  土壤含水率  灌溉管理
英文关键词:soil respiration  soil disturbance  soil moisture  irrigation management
基金项目:国家自然科学基金项目(51179051、51209066); 中央高校基本科研业务费项目(2011B05514); 中国博士后科学基金项目(2012M510122); 河海大学中央高校基本科研业务费项目(2014B37914)
作者单位
于艳梅1,徐俊增2, 杨士红2a,卫 琦2 (1.黑龙江省水利科学研究院 黑龙江 哈尔滨 150080
2.河海大学 a.水文水资源与水利工程科学国家重点实验室
b.水利水电学院 江苏 南京 210098) 
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中文摘要:
      借助土箱试验观测研究土壤剧烈扰动条件下的土壤呼吸,并分析灌溉管理与土壤扰动的综合影响。结果表明:由于土壤剧烈扰动导致土壤呼吸通量出现短期的迅速增加,土壤剧烈扰动后两个处理的土壤呼吸峰值均超过800 mg/(m2·h),而且大部分时间在300 mg/(m2·h),高于大部分相关报道。对于SI处理,在适宜的水分条件(102%WHC)和土壤剧烈扰动的协同作用下,使土壤CO2呼吸峰值超过了900 mg/(m2·h)。对于SDI+SI处理,由于剧烈扰动的影响在非适宜的水分条件下出现了800 mg/(m2·h)以上的CO2排放峰值,土壤剧烈扰动后灌溉能够显著降低土壤呼吸通量,灌水后随水分达到适宜范围(98%WHC),出现水分调控导致的另一个小高峰,但本研究中水分高峰仅为土壤剧烈扰动后峰值的67%。
英文摘要:
      The paper studied the soil respiration under the condition of intensively disturbed soil by aid of incubation experiment and analyzed the influence of combined irrigation and soil disturbance. The results show that the intensive soil disturbance results in a short-term quick increase of soil respiration.After the soils of two treatment were intensively disturbed, their respiration peak values overhanded 800 mg/(m2·h),and were 300 mg/(m2·h) for most of the time and higher than that in most reports.For surface irrigation treatment,the peak of soil respiration was higher than 900 mg/(m2·h) under the combined effect of both intensive soil disturbance and proper moisture conditions (about 102%WHC).For deep water application treatment, a peak (higher than 800 mg/(m2·h)) appeared under the condition of intensive soil disturbance and the soil moisture of not being fit. The irrigation obviously decreased the amount of soil respiration after the soil was intensively disturbed.The soil moisture appeared another peak when the soil moisture reached the suitable range (98%WHC). But the peak of soil moisture in the research was about 67% of the peak after the soil was intensively disturbed.
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