山西省露天煤矿复垦区典型人工林凋落物持水性能研究

o study the important effects of the water-holding capacity of litter in plantation plants in coal minedumps on soil and water conservation and ecosystem restoration in mining areas, litter accumulation amount, thethickness, water-holding rate, water-holding capacity, and water absorption rate of different decomposition stageswere investigated in four typical plantations of the same age (Populus simonii, Ulmus pumila, Pinustabulaeformis, and Robinia pseudoacacia forests) in the Antaibao opencast coal mine reclamation area, throughfield investigation and soaking extraction. The results showed that the litter accumulation amount in the P.simonii forest was higher than that in the R. pseudoacacia and U. pumila forests (P < 0.05). The water-holdingcapacity and litter rate at different decomposition degrees changed logarithmically with immersion time (P U. pumila forest > P. simoniiforest > P. tabulaeformis forest, and the water absorption rate showed a significant power function withimmersion time (P < 0.01). In conclusion, the litter of the P. simonii forest had the strongest water- holdingcapacity, whereas the R. pseudoacacia forest had the fastest water absorption rate. Therefore, from theperspective of the water conservation capacity of litter, P. simonii forest should be prioritized and mixed with theR. pseudoacacia forest, which is more conducive to water conservation in the reclamation area of opencast coalmines.