Study on the Migration Pattern of Organic Carbon in Slope Farmland in the Southeast of Heilongjiang ProvinceHongfeng Wang, Jiuyi Wang, Jing Zhao, Guomeng Fu, Ze Shao and Xingchen YuE3S Web Conf., 617 (2025) 01021DOI: https://doi.org/10.1051/e3sconf/202561701021