| 放牧对草地生态系统温室气体的影响 |
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| 引用本文： | 宋娅妮,呼和,程云湘,侯扶江,常生华.放牧对草地生态系统温室气体的影响[J].草业科学,2018(2):256-265. |
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| 作者姓名： | 宋娅妮 呼和 程云湘 侯扶江 常生华 |
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| 作者单位： | 草地农业生态系统国家重点实验室 农业部草牧业创新重点实验室 兰州大学草地农业科技学院,甘肃兰州,730020
甘肃省农业科学院土壤肥料与节水研究所,甘肃兰州,730070 |
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| 基金项目： | 国家自然科学基金，国家重点研发计划，中央高校基本科研业务经费专项基金 |
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| 摘 要： | 放牧主要通过影响草地生态系统中土壤的理化性质(土壤含水率、孔隙度、微生物和有机物含量的构成)来影响整个生态系统温室气体的排放。草地生态系统土壤中,植物根系的呼吸作用、土壤微生物的活动以及各种物理、化学和生物作用为温室气体的主要来源。本文在阐述草地生态系统温室气体排放机制和作用的基础上,主要从放牧管理模式、放牧强度、放牧动物等放牧作用对草地生态系统温室气体的排放情况进行了综述,就今后放牧对草地生态温室气体的研究重点和方向进行了展望,总结了适合不同放牧条件下整个生态系统温室气体的减排措施。
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| 关 键 词： | 放牧模式 放牧强度 放牧动物 动物种类 动物排泄物 二氧化碳、甲烷、氧化亚氮排放通量 减排措施 grazing mode grazing intensity grazing animals animal species carbon dioxide methane and nitrous oxide emissions flux mitigation measures |
Effect of grazing on greenhouse gases in grassland ecosystems |
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| Song Ya-ni,Huhe,Cheng Yun-xiang,Hou Fu-jiang,Chang Sheng-hua.Effect of grazing on greenhouse gases in grassland ecosystems[J].Pratacultural Science,2018(2):256-265. |
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| Authors: | Song Ya-ni Huhe Cheng Yun-xiang Hou Fu-jiang Chang Sheng-hua |
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| Abstract: | Grazing affects grassland greenhouse gas (GHG) emissions by changing the physical and chemical properties of soil,such as the soil water content,porosity,and microbe and organic matter contents.Respiration of plant roots,soil microbial activities,and various physical,chemical,and biological functions in grassland ecosystems are the main sources of GHGs.Based on the mechanism and function of GHG emissions in grassland ecosystems,this paper reviews the GHG emissions in grassland ecosystems from grazing management,grazing intensity,and grazing animals.The effects of grazing on GHGs in grassland ecosystems,the focus and direction of research prospects,and a summary of the measures taken in different ecosystems to reduce GHGs are discussed in this paper. |
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