In view of the singleness of the tree species, the decline in biological diversity, and the serious waste of forest land productivity in the Saihanba plantations of Hebei Province, the Forest Farm conducted the targeted tending of the artificial Larix principis-rupprechtii pure forest adopting the close-to-nature management selective cutting mode. The tender operation to target forest was carried out once every 5 years, so that the target tree density was finally maintained at about 450 plants /ha after 3-5 times. Then the density of the target trees was gradually reduced to 225-300 plants / ha. Under the forest canopy, the shade-tolerant species, spruce, was planted, while Pinus sylvestris was planted in the edge of the forest; the management of forest regeneration layer was strengthened by implementing timely cutting, irrigating and weeding operations, so as to promote the growth of new seedlings. The uneven-aged stratified mixed stand of Larix principis-rupprechtii, spruce and Pinus sylvestris has effectively enhanced the quality of the stand and improved the function of ecological service. There were large diameter tree species of Larix principis-rupprechtii in the upper layer, an even distribution of spruce, Pinus sylvestris and other tree species in the middle, and the dense vegetation in the lower. The targeted DBH of Larix principis-rupprechtii, spruce and Pinus sylvestris were 40+cm, 55+cm, and 50+cm, respectively. (Hebei Provincial Department of Forestry)

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Stand before tending

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Stand after pruning

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Stand after the second tending and intermittent cutting

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Stand after three times of tending

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Stand after four times of tending

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Stand after five times of tending

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Afforestation under the forest