生物质炭对不同植被类型土壤温室气体排放影响研究进展

土壤生态系统是温室气体排放的主要来源之一，降低土壤温室气体排放对于缓解全球变暖具有重要意义。近年来，生物质炭在改良土壤性质、提高土壤碳汇和影响土壤温室气体排放方面展现出了巨大的潜力。因此，关于施加生物质炭对土壤温室气体排放影响的研究已经成为了环境科学和农业生态领域的研究热点。然而，生物质炭对土壤温室气体净排放的影响是促进还是抑制尚无统一定论。不同植被类型条件下土壤温室气体排放也存在较大差异，故而研究添加生物质炭对不同植被类型土壤温室气体排放的影响至关重要。本文综述了添加生物质炭对林地、农田及设施蔬菜土壤中CO₂、CH₄和N₂O排放的影响，探讨了生物质炭对土壤温室气体排放的作用机制。总结发现，不同植被类型土壤添加生物质炭将降低土壤N2O的排放，并且增加土地对CH4的吸收，而对CO₂排放的影响没有统一定论。结合国内外生物质炭在该领域的研究现状，未来需开展生物质炭在土壤温室气体减排领域的长期系统研究，同时应充分考虑使用生物质炭可能存在的潜在环境风险，以期为生物质炭在土壤温室气体减排中的应用提供可靠的科学依...

Effects of Adding Biochar on Greenhouse Gas Emissions from Soils of Different Vegetation Types

Soil ecosystems are one of the main sources of greenhouse gas emissions, hence, reducing soil greenhouse gas emissions is of great significance for alleviating global warming. In recent years, biochar has shown great potential in improving soil properties, enhancing soil carbon sinks and affecting soil greenhouse gas (GHG) emissions. Therefore, the study on the effect of biochar application on soil greenhouse gas emissions has become a research hotspot in the fields of environmental science and agroecology. However, there is no consensus on whether the effect of biochar on net GHG emissions from soil is promoting or suppressing. There are also great differences in soil GHG emissions from different vegetation types, so it is very important to study the effect of biochar addition on GHG emissions from different vegetation types. In this review, the effects of biochar addition on CO2, CH4 and N2O emissions from forest land, farmland and facility vegetable soils were reviewed, and the mechanism of biochar effects on soil GHG emissions was discussed. It was concluded that the addition of biochar to soils of different vegetation types would reduce soil N2O emissions and increase land absorption of CH4, while there was no unified conclusion on the effects on CO2 emissions. Combined with the research status of biochar in this field, it is necessary to carry out long-term systematic research in the field of soil GHG emission reduction in the future, which is aim to provide a reliable scientific basis for the application of biochar in soil GHG emission reduction.