意大利214杨与樟子松混交林生长量与土壤状况分析

Growth & Soil Condition of Mixed Forest of Populus ×euramericana 'I-214' & Pinus sylvestris var.mongolica

通过对意大利214杨(Populus euramevicana‘I-214’)与樟子松(Pinus sylvestnis var.mongolica Litv.)混交林生长量的调查研究,结果表明:与对照纯林相比,意大利214杨与樟子松混交能明显提高意大利214杨和樟子松的生长量,但整个林分单位面积的蓄积较之意大利214杨和樟子松纯林有所下降,试验处理的木材胸径分别比纯林有所提高,混交林下的土壤理化性质较之纯林有所改善,肥力状况明显提高。

Growth of mixed forest of PopugusX euramericana ＇I--214＇ and Pinus sylvestris var. mongolica were in- vestigated. Result shows that：Pinus sylvestris var. rnongolica mixed with Populus X euramericana ＇ I-- 214＇ can obviously improve their growth quantity, but volume of unit area for the forest wood are relatively lower than that of the pure forest of Populus X euramericana ＇ I-- 214 ＇ ＆ Pinus sylvestris var. mongolica. DBH of treated wood greatly increase than that of pure forest respectively; soil physical ＆ chemical properties for mixed forest improve than that of pure forest, and its fertility improved significantly.