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本文对9个森林类型的径流、泥沙、覆盖度、地被物观测分析表明:不同类型森林的水土保持效益以柠条、刺槐成林最好;沙棘、刺槐从幼林到成林次之;柠条、沙棘×油松、沙棘×杨树从幼林到成林减沙的效益较差。森林的水土保持有效覆盖度为60%以上。林下活地被物对减少泥沙的作用显著,林地枯落物层对涵养水源、改善土壤物理性质有特殊作用。
In this paper, the analysis of runoff, sediment, coverage and cover of 9 forest types shows that the benefits of soil and water conservation of different types of forests are the best with Caragana korshinskii and Robinia pseudoacacia forest; Caragana, Seabuckthorn × Pinus tabulaeformis, seabuckthorn × poplar from the young forest to forest sediment less effective. The effective coverage of water and soil conservation in forests is over 60%. Suburbs living things to reduce the role of sediment significantly, forest litter layer to conserve water, improve soil physical properties have a special role.