农田土壤固碳及其影响因子研究进展

Carbon Sequestration and its Influencing Factors in Agricultural Soils

固碳过程对于改善土壤质量、维持农田生态系统、保障全球粮食安全、缓解气候变化趋势等至关重要.本文介绍了农田土壤的生物与非生物固碳过程,阐述了土壤质地、水热变化、全球变暖和人为因素对农田土壤固碳过程的影响.总结了目前较受重视的一些农田固碳措施(施肥、灌溉、秸秆还田、生物炭质施入等)及其对农田土壤固碳能力的改善和应用中存在的问题,并对今后的相关研究作出展望.

Carbon sequestration in agricultural soils plays an important role in improving soil quality ,restoring degraded soil and ecosystems ,ensuring global food security and mitigating global climate changes .This review elaborates the biotic and abiotic carbon sequestration processes in agricultural soil , and discusses the impacts of soil texture , hydrothermal changes ,global warming and anthropogenic factors on soil carbon sequestration .Some measures on agricultural soil carbon sequestration ,such as ,fertilization ,irrigation ,straw returning ,and biochar inputs ,as well as the improvement impacts of these measures on carbon sequestration ability and the problems in the applications are also summarized . Finally , the prospects of the future research work are put forward .