catena

To elucidate the effects of exogenous amendments on freeze–thaw-induced cracking and runoff erosion, this study employed a self-designed artificial climate chamber and rainfall simulator to systematically analyze the variations in crack morphology, fractal characteristics, and sediment yield under the application of humic acid (H) alone and in combination with lignosulfonate (L) or polyacrylamide (P).为阐明外源改良剂对冻融开裂与径流侵蚀的影响，本研究采用自主设计的人工气候箱与降雨模拟器，系统分析了单独施用腐殖酸（humic acid, H），以及将其与木质素磺酸盐（lignosulfonate, L）或聚丙烯酰胺（polyacrylamide, P）复配施用时，裂缝形态、分形特征与产沙量的变化情况。