Carbon captured by winter fallow weeds and its effect on soil carbon content in rice cropping systems

To evaluate the C capture capacity of winter fallow weeds and the impact of C inputs from these weeds on soil C content in rice cropping systems, on-farm investigations were carried out in Hunan Province, China, during 2022 and 2023, alongside a fixed field experiment in the region from 2020 to 2024.为评估水稻种植系统中冬闲杂草的碳捕获能力（carbon capture capacity），以及此类杂草的碳输入对土壤碳含量的影响，本研究于2022—2023年在中国湖南省开展大田实地调查，并于2020—2024年在该区域同步设置固定定位田间试验。