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通过对黄土丘陵区退耕地(阴坡)3种植被(沙棘、刺槐沙棘混交林地、油松沙棘混交林地)不同生长状况土壤养分研究,结果表明:(1)研究区土壤养分含量低;(2)研究区土壤养分中全氮、速效氮、速效钾、速效磷空间变异性显著;(3)研究区林地土壤养分含量从大到小顺序依次为沙棘(好)>刺槐沙棘林地(好)>沙棘(差)>刺槐沙棘林地(差)>油松沙棘林地(好)>油松沙棘林地(差),死亡的油松沙棘混交林地土壤养分含量好于生长好与生长差的油松沙棘混合林地。
The results showed that: (1) the soil nutrient content in the study area was low; (2) the soil nutrient content in the three habitats (shady, seabuckthorn and seabuckthorn mixed forest) The spatial variability of total N, available N, available K and available P in soil nutrient was significant in the study area. (3) The order of soil nutrient content in the forestland from descending order was Seabuckthorn (good)> Seabuckthorn (good)> Seabuckthorn (poor)> acacia seabuckthorn forest (poor)> Pinus tabulaeformis forest land (good)> Pinus tabulaeformis forest land (poor), the death of Pinus tabulaeformis mixed forest soil nutrient content is better than good growth and poor growth of Pinus tabulaeformis mixture woodland.