Research progresses in the effect of land-use change on soil carbon pools and soil respiration
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摘要: 土地利用变化对生态系统碳循环和全球气候变化具有非常显著的影响。土壤碳库容量为大气碳库的2~3倍，土壤呼吸过程是土壤圈碳流入大气圈的主要途径。研究土地利用变化对土壤碳库与土壤呼吸速率的影响对于揭示生态系统对土地利用变化的响应机制及科学估算区域生态系统的碳汇功能具有十分重要的意义。综述了自然林地、人工林地、农业用地和草地等4种土地利用方式相互转化对土壤碳储量的影响，较详细地分析了土地利用变化对不同活性碳库（主要包括微生物量碳、水溶性碳、易氧化碳等）的影响，探讨了土壤呼吸速率对土地利用变化的响应及其机制，最后对该方向今后的研究重点做了展望。参69Abstract: Land use change has a very significant impact on the carbon cycling in ecosystems and global climate change. Soil carbon storage has the 2-3 times capacity of the atmospheric carbon pool，and the process of soil respiration is regarded as the main pathway to the emission of pedosphere carbon into the atmosphere. Study on the effects of land use change on soil carbon pools and soil respiration rate would have a very important significance for revealing the response of ecosystems to land-use change and associated mechanisms，and scientific estimates of regional ecosystem carbon sequestration. The effects of land-use change among four land-use types （natural woodland，plantation land，agricultural land and grassland） on the soil carbon storage were reviewed in this paper. The effects of the above-mentioned land-use change on different labile carbon pools，including microbial biomass carbon，water-soluble carbon，readily oxidizable C，were analyzed in detail. Additionally，the response of soil respiration rate to the land-use change and associated mechanisms was investigated，and the focuses in this field for future research were put forward.［Ch，69 ref.］
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Key words:
- soil science /
- land-use change /
- soil carbon pool /
- activated carbon /
- soil respiration /
- greenhouse effect /
- review
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链接本文:
https://zlxb.zafu.edu.cn/article/doi/10.11833/j.issn.2095-0756.2013.03.021
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