马尾松混交林持水性能的研究

通过对南方陡坡山地开展马尾松不同混交林林分类型持水能力研究,结果表明,马尾松与阔叶树木荷、火力楠混交,林分持水能力比马尾松与杉木混交及马尾松纯林强,针阔混交林能较大提高土壤涵养水源和保持水土的能力,使土壤得到较好改良,而营造针叶林则土壤持水能力低,易发生水土流失。建议南方陡坡山地采用针阔混交造林,尽量避免针叶纯林。

Study on Water Retention Ability of Pinus massoniana Mixed Forests

The research on water retention ability of different Pinus massoniana mixed stands was made on steep lands of the souch mountains of China.The results show that the ablities of the stands of Pinus massoniana mixing with Michelia macclreei or Schima superba are much better than that of Pinus massoniana with Cunninghamia lancedata or its pure forests.The mixed broadleaf-conifere forsts can improve the ablilty of water conservation and soil fertility,while the water retention ability of coniferous pure forests is so low that water and soil is apt to lose and erode.It is suggested that the mixed broadleaf-conifer forests shlould be planted on steep lands of south mountains.