福建柏与马尾松混交造林模式的环境效应与生长分析

Environmental Effects and Growth Analysis of the Mixted Forest Plantations of Fokienia hodginsii and Pinus massoniana

在杉木(Cunninghamia lanceolata)采伐迹地分别营造福建柏(Fokienia hodginsii)、马尾松(Pinus massoniana)混交林、纯林,经过13a经营管理,对不同林分的生长量、生物量、土壤理化性质等进行分析对比。结果显示,福建柏与马尾松混交能提高林分蓄积量、生物量、土壤肥力。13年生混交林的林分蓄积量,比福建柏、马尾松纯林分别提高14.01%和39.19%,林分总生物量分别提高14.20t.hm-2和33.57t.hm-2;混交林土壤理化性状比纯林均有不同程度的改善,土壤肥力有所提高。

The mixed forests of Pinus massoniana and Fokienia hodginsii,as well as the pure ones were built respectively on the cutting blanks of Cunninghamia lanceolata.Comparative analysis on the growth increment,stand biomass and soil physico-chemical properties of different forest stands were carried out after 13-year management.The results showed that the mixed forest with P.massoniana and F.hodginsii could improve the stand volume,biomass,and soil fertility.The stand volume of mixed forest was higher than that of pure P.massoniana or F.hodginsii forest,accounting for 14.01% and 39.19%,respectively,while the total stand biomass increased by 14.20 t·hm^-2 and 33.57 t·hm^-2,respectively.The soil physico-chemical properties of mixed forest were also improved in different degrees,which enhanced the soil fertility.