森林土壤呼吸对人为干扰因素的响应

发布时间：2018-04-07 15:53

本文选题：人为干扰　切入点：土壤呼吸　出处：《自然资源学报》2017年07期

【摘要】：森林土壤是大气CO_2重要的排放源。施肥、采伐、火烧、林下植被管理和土地利用方式改变等人为措施改变了土壤理化性质和土壤微气候,显著影响森林土壤CO_2的产生与排放。人为干扰对森林土壤呼吸的影响已积累了丰富的研究结果,但因森林类型、土壤状况、地域差异以及气候因素的不同,即使同一种干扰因素对土壤呼吸的影响也存在促进、降低或者未改变等不同的结论。论文利用相关论文数据库查询森林土壤呼吸的文献,在简要分析影响森林土壤呼吸自然因素(土壤温度、含水量)的基础上,重点论述了施肥、采伐、火烧、林下植被管理以及土地利用方式改变等人为因素对森林土壤呼吸的影响,系统揭示了人为干扰对森林土壤呼吸影响的作用机制,并探讨今后需要加强的研究方向,以期为气候变化背景下我国林地的合理、可持续经营起到借鉴和启示的作用。
[Abstract]:Forest soil is an important emission source of atmospheric CO_2.Artificial measures such as fertilization, cutting, burning, forest vegetation management and land use change changed soil physical and chemical properties and soil microclimate, and significantly affected the production and emission of CO_2 in forest soil.The effects of anthropogenic disturbance on forest soil respiration have accumulated rich results, but because of different forest types, soil conditions, regional differences and climatic factors, even the same disturbance factors have promoted soil respiration.Different conclusions such as lowering or not changing.On the basis of brief analysis of the natural factors (soil temperature, water content) affecting forest soil respiration, the paper mainly discusses the application of fertilizer, harvesting, burning and burning.The effects of artificial factors, such as forest vegetation management and land use change, on forest soil respiration were systematically revealed, and the mechanism of human disturbance on forest soil respiration was systematically revealed, and the research directions needed to be strengthened in the future were discussed.It is expected that the rational and sustainable management of forest land in China under the background of climate change can be used for reference and enlightenment.
【作者单位】：浙江农林大学亚热带森林培育国家重点实验室;浙江农林大学浙江省森林生态系统碳循环与固碳减排重点实验室;
【基金】：浙江省自然科学基金项目(LY15C160004) 浙江省科技创新团队项目(2012R10030-11)~~
【分类号】：S714

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