| 土壤呼吸与土壤有机碳对不同秸秆还田的响应及其机制 |
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| 引用本文： | 曹湛波,王磊,李凡,付小花,乐毅全,吴纪华,陆兵,徐殿胜.土壤呼吸与土壤有机碳对不同秸秆还田的响应及其机制[J].环境科学,2016,37(5):1908-1914. |
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| 作者姓名： | 曹湛波 王磊 李凡 付小花 乐毅全 吴纪华 陆兵 徐殿胜 |
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| 作者单位： | 华东理工大学生物反应器工程国家重点实验室, 上海 200237;同济大学污染控制与资源利用重点实验室, 上海 200092;同济大学污染控制与资源利用重点实验室, 上海 200092;同济大学污染控制与资源利用重点实验室, 上海 200092;同济大学污染控制与资源利用重点实验室, 上海 200092;同济大学污染控制与资源利用重点实验室, 上海 200092;复旦大学生物多样性与生态工程教育部重点实验室, 上海 200433;华东理工大学生物反应器工程国家重点实验室, 上海 200237;华东理工大学生物反应器工程国家重点实验室, 上海 200237 |
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| 基金项目： | 国家自然科学基金项目(21577101);上海市科委重大科技攻关项目(14231200404) |
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| 摘 要： | 以黄豆、玉米、水稻这3种农业秸秆为原料,崇明东滩围垦土地为试验样区,以景观植物地肤草为目标植物,研究土壤呼吸和土壤有机碳对不同秸秆还田的响应及其可能的机制.结果表明,不同秸秆直接还田的土壤呼吸和地上植物量均高于对照组;黄豆秸秆还田后土壤呼吸相对最低,土壤有机碳最高,因此黄豆秸秆还田的土壤碳封存能力高于玉米和水稻秸秆.秸秆还田显著促进土壤微生物活性,增加了土壤微生物量以及β-糖苷酶、脱氢酶活性,脱氢酶活性与土壤呼吸相关性最显著.黄豆秸秆还田脱氢酶活性最低,相应的土壤呼吸也最低.黄豆秸秆纤维素、木质素和C/N含量最高,可降解性最低,表明黄豆秸秆难以被微生物降解利用,因而还田后其土壤微生物活性最低,最终导致最低的土壤呼吸和较高的土壤有机碳.
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| 关 键 词： | 土壤有机碳 土壤呼吸 还田秸秆 土壤微生物 可生物降解性 |
| 收稿时间： | 2015/10/24 0:00:00 |
| 修稿时间： | 2015/12/17 0:00:00 |
Response of Soil Respiration and Organic Carbon to Returning of Different Agricultural Straws and Its Mechanism |
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| CAO Zhan-bo,WANG Lei,LI Fan,FU Xiao-hu,LE Yi-quan,WU Ji-hu,LU Bing and XU Dian-sheng.Response of Soil Respiration and Organic Carbon to Returning of Different Agricultural Straws and Its Mechanism[J].Chinese Journal of Environmental Science,2016,37(5):1908-1914. |
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| Authors: | CAO Zhan-bo WANG Lei LI Fan FU Xiao-hu LE Yi-quan WU Ji-hu LU Bing and XU Dian-sheng |
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| Institution: | State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China;State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China;State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China;State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China;State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China;State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China;Key Laboratory of Biodiversity and Ecological Engineering, Ministry of Education, Fudan University, Shanghai 200433, China;State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China;State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China |
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| Abstract: | |
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| Keywords: | soil organic carbon soil respiration straw returned soil microorganisms biodegradability |
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