摘要
Abstract
[Objective]To cultivate high quality and high yield Larix kaempferi plantation, and to select the best suitable density.[Method]Set up the thinning intensity of 20%, 30%, 40% and the control of the 4 treatments, namely, Ⅰ area 2 235 plant/hm2, Ⅱ area 1 995 plant/hm2, Ⅲ area 1 365 plant/hm2, Ⅳ area 2 975 plant/hm2 (CK), the experimental study on the selection of 18 year old stand in different density was conducted.[Result]In the 10 years, the biomass of Larix kaempferi was significantly changed in each test area.The density was 1 365 plant/hm2 in Ⅱ area, and the biomass of the forest was increased 74.80% by comparing with CK, the total biomass was increased 72.22% by comparing with CK.The density was 810 plant/hm2 in Ⅲ area, and the biomass of the forest was decreased 3.94% by comparing with CK, the total biomass was decreased 3.36% by comparing with CK.The biomass of herb layer and shrub layer increased 2.53% and 20.34%, respectively, by comparing with CK.[Conclusion]In middle age stage of Larix kaempferi, the density of the stand was 1 365 plant/hm2.关键词
日本落叶松/林分密度/生物量Key words
Larix kaempferi/Stand density/Biomass分类
农业科技
