马尾松混交林混交模式的多层次综合评判

THE STUDY OF SYNTHETICAL JUDGEMENT IN MANY SIDES ON THE M IXED MODEL OF MASSON PINE MIXED FOREST

马尾松 (Pinusmassoniana)混交林比对照纯林在木材蓄积量、林分小气候条件的改善及土壤的有机质含量上都有所提高。通过对 3种 (松杉、松杜、松枫 )混交林在经济效益、生态效应及土壤养分含量上的多层次综合评判 ,量化出经营模式上的优劣排序为松枫混交→松杜混交→松杉混交 ,给经营模式的优化选择提供了一种方法。

Relative to pure stands, mixed f orest of masson pine does better in the storage of timber, the improvement of f orest microclimate conditions and the organic matter content of soil. The sequen ce of superiority of management models is masson pine-Chinese fir mixed forest, followed by masson pine-eucommia (Eucommia ulmoides Oliv.) mixed forest an d masson pine-sweetgum mixed forest. This sequence is derived from the quantif ication and synthetic judgment of economic benefit, ecological effect and the nu trient content of soil among the three forest types. A suggested technique for the selection of an optimal management model is provided.